Teledyne Lawn Mower 2230R User Guide

MODEL 2230R, Process Hydrogen Analyzer  
OPERATING &  
INSTRUCTION MANUAL  
P/N  
6/30/2011  
ECO #  
IMPORTANT NOTICES  
Read and understand this operating manual  
before installing or using the unit. Only use  
cables from Model 2230R with this unit. If this  
equipment is used in a manner not specified by  
Model 2230R, the protection provided by this  
equipment may be impaired.  
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MODEL 2230R, Process Hydrogen Analyzer  
The safety of personnel is ultimately the responsibility of those who control process conditions.  
While this instrument may be able to provide early warning of imminent danger, it has no  
control over process conditions, and it can be misused. In particular, any alarm or control  
systems installed must be tested and understood, both as to how they operate and as to how  
they can be defeated. Any safeguards required such as locks, labels, or redundancy, must be  
provided by the user or specifically requested of Teledyne at the time the order is placed.  
Therefore, the purchaser must be aware of the hazardous process conditions. The purchaser is  
responsible for the training of personnel, for providing hazard warning methods and  
instrumentation per the appropriate standards, and for ensuring that hazard warning devices  
and instrumentation are maintained and operated properly.  
Teledyne Analytical Instruments, the manufacturer of this instrument, cannot accept  
responsibility for conditions beyond its knowledge and control. No statement expressed or  
implied by this document or any information disseminated by the manufacturer or its agents, is  
to be construed as a warranty of adequate safety control under the user’s process conditions.  
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MODEL 2230R, Process Hydrogen Analyzer  
SAFETY MESSAGES  
Your safety and the safety of others is very important. We have provided many important  
safety messages in this manual. Please read these messages carefully.  
A safety message alerts you to potential hazards that could hurt you or others. Each safety  
message is associated with a safety alert symbol. These symbols are found in the manual and  
inside the instrument. The definition of these symbols is described below:  
IMPORTANT NOTICES  
Read and understand this operating manual before installing or using the  
unit. Only use cables from Model 2230R with this unit. If this equipment  
is used in a manner not specified by Model 2230R, the protection  
provided by this equipment may be impaired.  
Hydrogen is flammable at 4% in air. Take indications seriously and be  
prepared to take action. In the event of detection of 4% or higher of a  
hydrogen gas concentration there is a high probability of a hazard to  
safety. Inform local emergency response personnel immediately.  
LIMITATION OF LIABILITY  
In the event of a defect in a product, Model 2230R shall not be responsible for any direct,  
indirect, incidental or consequential damages resulting therefore, including, but not  
limited to, loss of revenue and/or profit.  
This manual provides information designed to guide you through the installation, calibration  
and operation of your new analyzer. Please read this manual and keep it available.  
Occasionally, some instruments are customized for a particular application or features and/or  
options added per customer requests. Please check the front of this manual for any additional  
information in the form of an Addendum which discusses specific information, procedures,  
cautions and warnings that may be specific to your instrument.  
Manuals do get misplaced. Additional manuals can be obtained from Teledyne at the address  
given in the Appendix. Some of our manuals are available in electronic form via the internet.  
Please visit our website at: www.teledyne-ai.com  
.
If there are any questions concerning this equipment, please contact your local TAI  
representative, or the factory directly at:  
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MODEL 2230R, Process Hydrogen Analyzer  
TABLE OF CONTENTS  
1. DESCRIPTION  
06  
2. SPECIFICATION  
3. OPERATION  
07  
09  
09  
09  
09  
10  
10  
11  
11  
11  
12  
12  
13  
14  
20  
20  
20  
20  
21  
24  
3.1 UNIT LOCATION  
3.1.1 WARNING LABEL  
3.2 MOUNTING  
3.3 PROCESS CONNECTION  
3.4 START UP  
3.5 SETTINGS  
3.6 VISUAL STATUS INDICATOR  
3.7 OPTIMUM UNIT PERFORMANCE  
4. ELECTRICAL & COMMUNICATION  
4.1  
4.2  
4.3  
CONNECTIONS  
ANALOG OUTPUTS  
SERIAL COMMUNICATION  
5. MAINTENANCE  
5.1 CLEANING  
5.2 CALIBRATION INTERVAL  
5.3 FIELD VERIFICATION & FIELD CALIBRATION GASES  
5.4 VERIFICATION  
5.5 CALIBRATION  
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MODEL 2230R, Process Hydrogen Analyzer  
1. DESCRIPTION  
The Model 2230R Process Hydrogen Analyzer is designed to detect and/or measure hydrogen  
as a component of a gas mixture. The hydrogen specific solid-state sensing element is designed  
for ease of use, interface flexibility and true process control. The electronics contains all the  
circuitry necessary to operate the sensor and present calibrated hydrogen readings to a voltage  
or current analog output and an RS232 or RS422 digital output. The monitor can be  
implemented in humidity and in process gas streams with temperatures up to 100°C. The  
Model 2230R is ideal for hydrogen production and petrochemical applications where real-time  
measurements can enhance process plant efficiencies, diagnostics, and maintenance  
management.  
Product Name  
Product Model  
Purchase Date  
Serial No  
Process Hydrogen Analyzer  
Model 2230R  
Contact Details,  
Your Distributor  
Contact Details,  
TELEDYNE  
TELEDYNE INSTRUMENTS  
Analytical Instruments  
ANALYTICAL INSTRUMENTS  
16830 Chestnut Street  
City of Industry, CA 91749-1580  
Telephone: (626) 934-1500  
Fax: (626) 961-2538  
Or your local representative.  
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MODEL 2230R, Process Hydrogen Analyzer  
2. SPECIFICATIONS  
Process Gas Stream  
Temperature: -20°C to 100°C  
Flow Rate: 0 to 50 slpm  
Ambient Temperature  
Operating: -20°C to 40°C  
Storage: -40°C to 50°C  
8 VDC to 13 VDC, 1.0 A  
Indoor/Outdoor Use  
Power Supply  
Environmental  
Altitude up to 2000 meters  
Pollution degree 2 environment  
IP64 capable  
Ingress Protection  
Analog Outputs  
Output Voltages OR  
·
0 VDC to 5 VDC  
·
1 VDC to 5 VDC  
Output Currents  
·
4 mA to 20 mA  
·
0 mA to 20 mA  
User-specific ranges available  
Serial Communications  
RS-232 or RS-422  
Relay Contacts (Optional)  
(Two programmable 60 VDC / 1 A SPDT relays with both  
normally open N.O.) and normally closed (N.C.) contacts.  
See following figure (dimensions in inches [mm] )  
0.37 kg (0.82 lb.)  
Dimensions  
Weight  
Product Life Expectancy  
Certifications  
10 years  
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MODEL 2230R, Process Hydrogen Analyzer  
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MODEL 2230R, Process Hydrogen Analyzer  
3. OPERATION  
3.1 UNIT LOCATION  
The unit can be mounted in any orientation or position, however vertical mounting (unit above  
process connection) should be made in process streams containing liquids or potentially  
condensing gases.  
3.1.1 WARNING LABEL  
Remove sensor tube warning label prior to using the unit.  
3.2 MOUNTING  
Mounting is achieved by securing the sensor tube into the supplied fitting directly in the  
process piping as shown below. Optional mounting brackets that attach to the instrument  
housing are also available.  
WARNING: DO NOT CINCH DOWN OR TIGHTEN FERRULES OUTSIDE OF  
THE FERRULE REGION OF THE LONG TUBE OR YOU WILL RISK  
PERMANENTLY DAMAGING THE LONG TUBE AND SENSOR ASSEMBLY  
WITHIN.  
1.0 inches is the maximum distance that the fitting mount can be from the end plate of the  
Model 2230R unit. This is referred to as the Ferrule Region of the long tube which has a wall  
thickness of 0.065 in. Any distance exceeding 1.0 in. will be in the Sensor Assembly Region  
where the tube wall thickness is only 0.038 in. Cinching down a fitting outside the Ferrule  
Region and in the Sensor Assembly Region may result in permanent damage to the long tube  
and the sensor assembly within.  
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MODEL 2230R, Process Hydrogen Analyzer  
3.3 PROCESS CONNECTION  
Model 2230R offer a variety of fittings to mate the unit to a process stream. The following table  
lists our standard fitting selections. Others are available upon request.  
·
·
·
½” MNPT thread  
½” FNPT thread  
-8 SAE/MS thread size  
... and many other industry standards.  
3.4 PROCESS CONNECTION  
Power (8 to 13 VDC) is connected via the Power/Analog connector as shown in Section 4.1.  
Once power is applied, the unit executes a warm-up sequence lasting five minutes. The status  
LED will be amber in color during the warm-up sequence. When the unit is ready for operation,  
the status LED will change to green (if the measured hydrogen concentration is under the first  
relay set point) and to red (if it exceeds the second relay set point). The following operations  
will be completed in this warm-up sequence:  
·
·
Heat the sensor to operating temperature  
Perform system self-test  
WARNING: MODEL 2230R PROCESS HYDROGEN ANALYZERS ARE  
CALIBRATED IN A HYDROGEN/NITROGEN (H/N) BACKGROUND AND  
SHOULD NEVER BE OPERATED IN AN AIR OR OXYGEN BACKGROUND.  
After warm-up, the Model 2230R Analyzer should be run in a hydrogen concentration  
exceeding 5% by volume for at least an hour. Oxygen will readily adsorb on the Model 2230R  
Analyzer and can confound the hydrogen measurements. If the sensors are left in oxygen, air or  
any environment without hydrogen for long periods of time, they must be conditioned in  
hydrogen to remove adsorbed oxygen and taken through the Verification process to check  
accuracy. Failure of the Verification will require that the sensors go through Calibration. Both  
procedures are described later in this manual.  
The Model 2230R Analyzer can be exposed to oxygen for short periods of time without adverse  
effects if the unit is turned off. If the units are operated in oxygen or stored in air for longer  
than a week, the units’ hydrogen readings may be high due to oxygen adsorption on the sensor.  
Hydrogen exposure will then cause the readings to drift lower as adsorbed oxygen is slowly  
removed and the unit recovers to normal steady behavior.  
If this drift behavior is observed, the sensor should be conditioned by operating in a hydrogen  
concentration exceeding 5% until the readings are stable. The required hydrogen conditioning  
may vary from several hours to several days depending on the level of oxygen exposure. Higher  
hydrogen concentrations used during conditioning may accelerate the process. Once stable, the  
unit should be taken through Verification to check accuracy and Calibration if needed.  
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MODEL 2230R, Process Hydrogen Analyzer  
Step  
Description  
Power units on in 5% H/Nby volume or greater  
1
2
Operate the Model 2230R Analyzer in the 5% H/Nor greater gas for six hours or  
longer  
Check to see if the sensor readings were accurate and stable over that time  
3
4
If the readings are not accurate and stable, condition the sensor in 5% H/Nor  
greater gas overnight and perform the Verification and Calibration described later  
in this manual.  
3.5 SETTINGS  
The unit’s operational and output settings have been configured at the manufacturer with  
settings specified at the time of purchase. Settings may be changed through the use of Serial  
Communication as described in section 4, or through the use of an Optional User Interface  
Module.  
WARNING: IF SETTINGS ARE CHANGED FROM THOSE SET BY THE  
MANUFACTURER THEN IT IS THE USER’S RESPONSIBILITY TO  
UNDERSTAND THE IMPLICATIONS TO THE CONNECTING EQUIPMENT  
MONITORING THE UNIT.  
3.6 VISUAL STATUS INDICATOR  
Located on the front of the unit next to model number marking, the Status Indicator LED  
displays basic unit function as described below.  
Status  
Indicator Color  
GREEN  
Normal operation / Hydrogen Detected below R1 set point  
Warm-up / Hydrogen Detected above R1 and below R2 set points  
Hydrogen Detected above R2 set point/ Unit fault detected  
AMBER  
RED  
3.7 OPTIMUM UNIT PERFORMANCE  
For maximizing the performance of the sensor, the following steps are recommended.  
·
Verify that all electrical connections and made as recommended. Switching the polarity can  
cause damage to the unit. Ensure that the DC power supply utilized is appropriate and does  
not have large peak-to-peak noise.  
·
Perform a Field Calibration after installation and conditioning steps described in the Start-  
up section are completed.  
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MODEL 2230R, Process Hydrogen Analyzer  
·
·
If the unit gets exposed to extended periods of no H(or some Oxygen), condition the  
sensor as described in the Start-up section and follow-up with a Field Verification (and Field  
Calibration, if needed).  
Effect of pressure: The Model 2230R Analyzer is hydrogen specific and sensitive to only the  
hydrogen partial pressure in the gas stream. Since changes in total gas pressure will affect  
the hydrogen partial pressure, they will also affect the sensor readings. For instance, at one  
atmosphere pressure, a 50% H/Nmixture will be reported as 50% from the unit. At 1.1  
atm, the reading will increase to 55% and two atms will result in a reading of 100%. In fact,  
the Model 2230R Analyzer are capable of measuring multiple atmospheres of hydrogen and  
readings above 100% Hare interpreted as hydrogen pressures above one atmosphere. So,  
for example, a reading of 150% Hmeans 1.5 times the hydrogen pressure of a 100% H₂  
concentration at one atmosphere. At the factory, the units are calibrated at one  
atmosphere pressure. Performing the Field Calibration at the operating pressure will display  
the pressure corrected reading. For example, if the local atmospheric pressure is 0.97 atm,  
doing a Field Calibration will correct for this.  
·
Verification/Calibration gas bottle accuracy: The inaccuracy of the gas bottle concentration  
will directly affect the measured accuracy by the units. During factory calibration, the units  
are calibrated with high accuracy gases (as high as ± 0.02% accurate). It is strongly  
recommended that the user perform calibration with similar high accuracy gases to  
maintain the accuracy specified in the manual.  
4. ELECTRICAL & COMMUNICATION  
WARNING: IF THE UNIT IS INSTALLED IN A CLASSIFIED LOCATION THEN IT  
IS THE RESPONSIBILITY OF THE USER AND INSTALLER TO MAKE  
CONNECTIONS TO RELATED EQUIPMENT IN A MANNER CONSISTENT  
WITH THE LOCATION CLASSIFICATION.  
4.1 CONNECTIONS  
Power/Analog Output - Connector 1  
Supplied Cable – 4m (12 ft.) standard length (Other lengths available)  
Wire Color  
Description  
Brown  
White  
Black  
Blue  
+8 VDC to +13 VDC  
VDC Return  
Positive Analog Output  
Analog Output Return  
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MODEL 2230R, Process Hydrogen Analyzer  
Relays (Optional) - Connector 2  
Supplied Cable – 4m (12 ft.) standard length (Other lengths available).  
Wire Color  
Description  
Grey  
Pink  
Black  
White  
Blue  
Relay 1 Common  
Relay 1 Normally Closed (NC)  
Relay 1 Normally Open (NO)  
Relay 2 Common  
Relay 2 Normally Closed (NC)  
Relay 2 Normally Open (NO)  
Brown  
Serial Interface (Optional) / Remote User Interface Module (Optional) -  
Connector 3  
Supplied Cable – 4m (12 ft.) standard length (Other lengths available).  
Wire  
Color  
RS232 (standard)  
RS422 (Optional)  
Description  
DB9 DB25 Description  
DB9 DB25  
Pin  
Pin  
Pin  
Pin  
Brown  
White  
Blue  
+6V (N.C.)  
TxD (Device Transmit)  
-
3
-
2
-
TxD- (Device Transmit, -Ve)  
TxD+ (Device Transmit, +Ve) 4  
3
2
3
Black  
Grey  
Pink  
RxD (Device Receive)  
-
Ground  
2
-
5
3
-
7
RxD- (Device Receive, -Ve)  
RxD+ (Device Receive, +Ve)  
Ground  
2
6
5
20  
8
7
4.2 ANALOG OUTPUT  
The user can request for a specific output current or voltage range or there are a number of  
standard analog output ranges the user can select from, which are listed below. The analog  
output the user selects is scaled to the user’s hydrogen range of interest. All of this is initially  
set at the factory per customer specification at the time of order.  
Below is the table for standard analog output current ranges:  
Current Analog Output Range  
Power-On Self Diagnostic  
Error  
4 mA to 20 mA  
0 mA to 20 mA  
2 mA  
0 mA  
3 mA  
20 mA  
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MODEL 2230R, Process Hydrogen Analyzer  
The user can change to another current range of the analog output in the field. Please refer to  
the “I” command in Section 4.3 SERIAL COMMUNICATION.  
Below is the table for standard analog output voltage ranges:  
Voltage Analog Output Range  
Power-On Self Diagnostic  
Error  
5 V  
0 V  
4.5 V  
5 V  
0 V to 5 V  
1 V to 5 V  
0 V to 4 V  
0.5 V to 4.5 V  
0 V  
0.5 V  
5 V  
0 V  
The user can change to another voltage range of the analog output in the field. Please refer to  
the “V” command in Section 4.3 SERIAL COMMUNICATION.  
WARNING: THE USER CANNOT CHANGE FROM A CURRENT RANGE TO A  
VOLTAGE RANGE OR FROM A VOLTAGE RANGE TO A CURRENT RANGE  
OUT IN THE FIELD. THIS REQUIRES A FACTORY MODIFICATION.  
4.3 SERIAL COMMUNICATION  
The user can monitor output and interface with the unit to perform calibration or adjust user  
settings via the serial communication connector. The serial communication is accomplished via  
an RS232 (optional RS422) interface.  
Any serial port two-way communications software such as terminal  
emulators (HyperTerminal, Telnet, etc.) and purpose-built software  
(using LabView, Visual Basic, C++, etc.) can be used to establish serial  
communication with the unit.  
Serial  
Communications  
Software  
RS232 (RS422 optional)  
·
·
·
·
·
19200 Baud  
8 bit data  
1 stop bit  
No parity  
Xon/Xoff  
Format and  
Settings  
Streaming data is presented in column format. Once serial  
communication is established and the unit is operating in normal  
mode, data will be displayed in the user specified format. The display  
output options are configured via a serial command as described in the  
following sections (refer to the SERIAL COMMUNICATION COMMANDS,  
FORMAT <fmt>, and OPTIONS <opt> sections). Columnated data  
available are as follows:  
Data Display  
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MODEL 2230R, Process Hydrogen Analyzer  
<fmt> Format (these appear in their own columns)  
·
·
·
·
·
·
Timestamp (an integer count at 0.25 sec intervals)  
Printed Circuit Board (PCB) Temperature in  
Sensor Temperature in °C  
Raw Analog Data Converter (ADC) Values  
Calibrated Hydrogen Values  
Peak Hydrogen Values  
<opt> Options (these status data appear in the MESSAGES column)  
·
·
Calculation Errors  
Heater State  
What follows are examples of typical user specified outputs:  
Example 1:  
Sample serial data with column headers – Calibrated H% and Messages only  
Display  
User Response  
H2scan:  
Type “g 02 06”  
%H₂  
Messages  
0.0000  
0.0000  
0.0000  
Example 2:  
Sample serial data with column headers– Multiple Outputs Specified  
Display  
User Response  
H2scan:  
Type “g b2 06”  
Time stamp  
264  
280  
296  
312  
Pcb Temp  
Snsr Temp  
%H₂  
Messages  
28.8530  
29.1979  
29.5169  
29.7951  
124.50800  
124.50910  
124.51110  
124.51320  
0.0000  
0.0000  
0.0000  
0.0000  
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MODEL 2230R, Process Hydrogen Analyzer  
The unit can be communicated with and configured via the use of  
commands as described below. Two levels of communication outputs  
are available:  
Serial  
Communication  
Commands  
·
Level 0 – Default level used for data monitoring and basic  
functions providing a continuous stream of data readings  
Level 1 – Password protected level used for configuration of  
user-settable parameters; interactive single-line data output per  
command  
·
The RETURN or ENTER key is the last character of the command string.  
If either key is pressed without a command string the result is an invalid  
command and will resume continuous display if in Level 0 or return to  
prompt if in Level 1.  
Command  
Summary  
Level 0 Commands  
Keystroke  
ESC  
Description  
Stops continuous display to enter a password or command. If in level  
zero, the continuous display will resume after executing one  
command.  
Pressing the Space key while the serial output is active will display a  
label line showing the heading for each column of data.  
sp(spacebar)  
Average readings.  
A
Clear peak hydrogen value.  
C
Enter the password to change security level. A null or invalid  
password returns to the default security level.  
Level 0 password = “0”  
=<password>  
Level 1 password = “h2scan”  
Level 1 Commands  
Keystroke  
A <R1> <R2>  
C
Description  
Set the R1 and R2 set points for the relay contacts in %H.  
Clear peak hydrogen value.  
Display Product Information. Enter page number 0-6 or A for all  
pages, default is page 0.  
0 – Product information  
1 – User configuration  
2 – Manufacturing information  
3 – Product configuration  
D <page>  
4 – Sensor characterization data  
5 – Hydrogen calibration data  
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MODEL 2230R, Process Hydrogen Analyzer  
6 – Temperature calibration data  
A – All of the above  
Field Verify (refer to the Section 5.4 VERFICATION).  
E
F
Field Calibration (refer to the Section 5.5 CALIBRATION).  
Start or resume the sensor operation: if needed, heat the ASIC, setup  
the sensor, and output data on serial port; this restores default  
G < fmt> <opt>  
settings (refer to the FORMAT <fmt> and OPTIONS <opt> sections).  
Set the hydrogen reporting range: <low> to <high> in %H.  
H <low> <high>  
Set the DAC current output range: <low> to <high>; error output  
<err>; and not ready output <not rdy> milliamps. Possible range from  
0 to 20 milliamps.  
I <low> <high>  
<err> <not rdy>  
Print current hydrogen reading. Used to poll for hydrogen readings.  
Default format <fmt> is current setting (refer to the FORMAT <fmt>  
L < fmt> <opt>  
and OPTIONS <opt> sections).  
Select atmospheric pressure of gas. Factory default pressure is 1  
ATM.  
P <atm>  
Stop the sensor: turn off heater, set Bias to zero, set DAC outputs to  
zero, and stop reporting data on the serial output.  
S
Set the DAC voltage output range: <low> to <high>; error output  
<err>; and not ready output <not rdy> in volts. Possible range from 0  
to 5 volts.  
V <low> <high>  
<err> <not rdy>  
Clear field calibration data (returns to last factory calibration data).  
X
The Format <fmt> string is a two character hexadecimal representation  
of an 8 bit value derived from the following table. The user determines  
which data is needed and selects that bit value. Once all selections are  
made the values are summed bitwise and then converted to a two  
place hexadecimal value. To aid in the conversion, a 4 bit to  
hexadecimal conversion table follows in EXAMPLE 3.  
Format <fmt>  
Format: Bit Value Identifiers  
Serial output Format <fmt> parameter: select the desired columns of data from this list, add  
the bit value for each column bitwise, and convert into two hexadecimal characters using the  
4 bit-to-Hexadecimal table in EXAMPLE 3.  
Description  
Include time stamp  
Include raw ADC values  
Include PCB temperature  
Include sensor temperature  
Include capacitor reading  
Bit Value  
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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MODEL 2230R, Process Hydrogen Analyzer  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
1
Include resistor reading  
Include overall hydrogen reading  
Include peak hydrogen reading  
The Options <opt> string is a two character hexadecimal representation  
of an 8 bit value derived from the following table. The user determines  
which data is needed and selects that bit value. Once all selections are  
made the values are summed bitwise and then converted to a two  
place hexadecimal value. To aid in the conversion, a 4 bit-to-  
Hexadecimal conversion table follows in EXAMPLE 3.  
Options <opt>  
Options: Bit Value Identifiers  
Serial output Options <opt> parameter: select the desired status messages from this list  
which will appear in the MESSAGES column, add the bit value for each column bitwise, and  
convert into two hexadecimal characters using the 4 bit-to-Hexadecimal table in EXAMPLE 3.  
Description  
Calculation Errors  
Heater State  
Bit Value  
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
Example 3:  
The user wishes to implement the “G”  
command (“Go”command, refer to LEVEL 1  
COMMANDS table) to have the following  
serial output columns reported from the  
monitor: Time Stamp, Capacitor Reading,  
Overall Hydrogen Reading, the Peak  
Hydrogen Reading, Calculation Errors, and  
the Heater state.  
4 bit value  
Hexadecimal  
Character  
0000  
0001  
0010  
0011  
0100  
0101  
0110  
0111  
1000  
1001  
1010  
1011  
1100  
1101  
1110  
1111  
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
From the FORMAT <fmt> table above, you  
identify your desired columns with its  
corresponding bit value:  
<fmt> Descriptions  
<fmt> Bit Value  
Time Stamp  
1000 0000  
Capacitor Reading 0000 1000  
Overall Hydrogen  
Reading  
Peak Hydrogen  
Reading  
<fmt> 4 Bit Value  
Combination:  
0000 0010  
0000 0001  
1000 1011  
Page 18  
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MODEL 2230R, Process Hydrogen Analyzer  
Now use the 4 BIT-TO-HEXADECIMAL table above to convert this 4 bit value combination into a  
two place hexadecimal value:  
<fmt> Two Place Hexadecimal Value :  
8b  
From the OPTIONS <opt> table above, you identify your desired columns with its corresponding  
bit value:  
<opt> Descriptions  
Calculations Errors  
Heater State  
<opt> Bit Value  
0000 0100  
0000 0010  
<opt> 4 Bit Value Combination: 0000 0110  
Again, use the 4 BIT-TO-HEXADECIMAL table to convert this 4 bit value combination into a two  
place hexadecimal value:  
<opt> Two Place Hexadecimal Value :  
06  
Conclusion: To have the Time Stamp, Capacitor Reading, Overall Hydrogen Reading, the Peak  
Hydrogen Reading, Calculations Errors and Heater State columns continuously reported, you  
will implement the “G” serial command (“Go” Command, refer to LEVEL 1 COMMANDS table) as  
follows at the H2scan:  
command prompt: G < fmt> <opt> = g 8b 06  
Display  
User Response  
H2scan:  
Type “g 8b 06”  
Page 19  
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MODEL 2230R, Process Hydrogen Analyzer  
5. MAINTENANCE  
5.1 CLEANING  
If the unit is exposed to process streams containing debris, condensates or other material that  
may collect over the sensor tip then the unit should be removed from the stream periodically  
and the tip cleaned by a gentle wiping with a clean lint-free cloth or paper.  
5.2 CALIBRATION INTERVAL  
TELEDYNE ANALYTICAL INSTRUMENTS recommends that the system calibration be carried out if  
the unit fails Verification. Field Verification can occur as often as needed and is recommended  
when the tolerated sensor drift may result in unacceptably high errors. Anticipated drift rates  
and error calculations are explained in the Verification section of this manual. The user has two  
choices in calibrating the unit:  
Contact TELEDYNE ANALYTICAL INSTRUMENTS to make arrangements  
for a comprehensive Factory Calibration using high accuracy gases by  
TELEDYNE ANALYTICAL INSTRUMENTS’s factory trained technicians;  
optional NIST traceable certificate available upon request. An annual  
Factory  
Calibration  
Factory Calibration is advisable to optimize performance.  
Refer to Sections 4.4 and 4.5 for the operational procedure. Customer-  
specific Field Calibration Kits for the Model 2230R analyzer is available  
from TELEDYNE ANALYTICAL INSTRUMENTS. Field Calibration is a 3 stage  
process:  
1. Run Field Verification,  
Field  
Calibration  
2. Run Field Calibration,  
3. Repeat the Field Verification to confirm a successful Field Calibration.  
In the event the Field Calibration procedure seems to not be effective, TELEDYNE ANALYTICAL  
INSTRUMENTS recommends the unit be shipped back to the factory for a comprehensive  
evaluation and Factory Calibration.  
5.3 FIELD VERIFICATION & FIELD CALIBRATION GASES  
Field Verification and Field Calibration require the availability of at least two certified known  
gases at values specific to the user’s application. For optimization, the hydrogen concentrations  
of the gases implemented in Field Verification and Field Calibration must be the same. Flow  
rate recommended is 0.5 ± 0.2 slpm.  
Verification / Calibration in an Inert (i.e. nitrogen) Background Gas:  
For a unit calibrated in an inert gas (i.e. nitrogen) background, carry out Verification and  
Calibration in an inert (i.e. nitrogen) gas background.  
Gas Connection  
Gases are applied to the unit through user’s piping.  
Page 20  
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MODEL 2230R, Process Hydrogen Analyzer  
5.4 VERIFICATION  
Verification Interval  
Verification is a process to compare the sensor output to a known hydrogen concentration.  
Verifications do not cause any wear on the sensor and can be accomplished as often as desired.  
The recommended interval to perform Verification depends solely on the user’s desired  
tolerance for the specific application in question. If the user does not have a specific desired  
tolerance, TELEDYNE ANALYTICAL INSTRUMENTS recommends that Verification be performed  
every three months.  
The tolerance (error) in measuring hydrogen has two primary components: the initial accuracy  
number (offset) and a weekly drift value (slope). The chart below is provided as a guideline for  
tolerance estimation for the Model 2230R and can be a useful tool in determining the initial  
verification frequency. The subsequent verification frequencies can be decided based on the  
actual weekly drift observed. The tolerance chart may be used in accordance with TELEDYNE  
ANALYTICAL INSTRUMENTS Model 2230R accuracy specifications.  
Tolerance Chart (Gas Temperature <65°c)  
Number of Weeks after Field Calibration, X  
Model  
Accuracy(*):  
± 0.3% absolute for 0.5 to 10% H₂  
± 1.0% absolute for 10 to 100% H₂  
Drift/week:  
± 0.2% absolute for 0.5 to 10% H₂  
± 0.4% absolute for 10 to 100% H₂  
2230R  
* Sensor performance specifications are only valid for units configured for a maximum 65°C dry  
process stream temperature. All figures assume pressure compensation, operating in ambient  
that do not contain Oxygen and are in addition to any errors in the gasses used. The accuracy is  
specified for serial port output only.  
The drift chart can be used to determine the maximum recommended Verification interval to  
maintain a required level of accuracy. For instance, if ± 1% accuracy in a 5% H2/N2 gas is  
needed; Verification should be typically performed every 3.5 weeks. If ± 2% accuracy is needed  
in the same gas, the recommended Verification interval can be extended to 8.5 weeks.  
Verifications may be done more frequently than these intervals if desired and should always be  
performed if the sensor readings are unusual or suspected to have large errors.  
Page 21  
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MODEL 2230R, Process Hydrogen Analyzer  
The Model 2230R Analyzer should be conditioned by operation in hydrogen exceeding 5% by  
volume until stable and taken through the Field Calibration, if exposed to oxygen or operated  
without hydrogen for an extended period. If the unit continues to exhibit errors in excess of the  
published accuracy specification and drift rate, please contact TELEDYNE ANALYTICAL  
INSTRUMENTS for factory evaluation and repair.  
Verification Procedure  
Verification can only be accomplished through interface with the unit via the serial port (refer  
to the previous Serial Communication Commands section and the LEVEL 1 COMMANDS table in  
Section 4.3). Verification of sensor output should be conducted on a regular basis to insure  
proper unit operation. Analog outputs can be monitored through the user’s system. As part of  
this sequence the date of verification is stored in the unit’s memory.  
WARNING: IN ORDER FOR VERIFICATION TO SUCCESSFULLY TAKE PLACE,  
THE SENSOR MUST BE IN NORMAL RUNNING MODE.  
Verification Using Serial Interface – After establishing serial communication then follow the  
sequence below:  
1) Press Esc”  
2) The unit will return the command prompt “H2scan:”  
3) Type e” then hit “Enter” and follow prompts to field verify sensor calibration at two gas  
concentrations  
These steps will implement the following specification values as an example; for values in bold,  
please substitute appropriate values relative to your specific operational conditions:  
·
·
·
Local atmospheric pressure: 0.969 ATM  
Hydrogen range: 0% to 30% hydrogen, balance nitrogen  
Field Verification Gas #1: 1% hydrogen, balance nitrogen (instead of gas #1 being 0%  
hydrogen, H2scan recommends Field Verification gases always have a hydrogen  
concentration)  
·
·
Field Verification Gas #2: 30% hydrogen, balance nitrogen  
Settle Time: 30 minutes (TELEDYNE ANALYTICAL INSTRUMENTS recommends this  
duration for field verification)  
·
Tolerance of Field Verification Gas #1 (1% hydrogen by volume): For example, ± 0.30%  
absolute hydrogen by volume (refer to the TOLERANCE CHART above or enter user  
desired tolerance) NOTE: Poor accuracy of the verification gases will influence the  
achievable accuracy from the unit.  
·
Tolerance of Field Verification Gas #2 (30% hydrogen by volume): ± 1.0% absolute  
hydrogen by volume (refer to the TOLERANCE CHART above or enter user desired  
tolerance)  
Page 22  
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MODEL 2230R, Process Hydrogen Analyzer  
FIELD VERIFICATION STEPS  
Step  
1
2
Display  
User response  
H2scan:  
Type “ e” to run field verification  
Type “ y”  
Ready to Verify  
(Y/N)?  
3
Pressure is 1.000  
atm (Y/N)?  
Type “ n”  
4
5
Enter new pressure:  
Pressure is 0.9690  
atm (Y/N)?  
Type “ .969” for the local atmospheric pressure  
Type “ y”  
6
7
Save as default  
(Y/N)?  
Verify Sensor  
(Y/N)?  
Type “ n”  
Type “ y”  
8
9
10  
11  
Enter Gas (%H2):  
Settle time (min):  
Tolerance (%H2):  
Apply 1.000%H2:  
Ready (Y/N)?  
Type “ 1” for gas #1, 1% hydrogen by volume  
Type “ 30” for a 30 minute duration for gas #1  
Type “0.3%” absolute from the for 1% hydrogen by volume  
Type “ y”  
Streaming data…  
12  
13  
Taking Average…  
An average will be calculated. Verification Gas1 finished  
Continue test Verify  
Sensor (Y/N)?  
Type “ y”  
14  
15  
16  
Enter Gas (%H2):  
Settle time (min):  
Tolerance (%H2):  
Type “ 30” for gas #2, 30% hydrogen by volume  
Type “ 30” for a 30 minute duration for gas #2  
Type “1.0%” absolute from the TOLERANCE CHART for 30%  
hydrogen by volume  
17  
Apply 30.000%H2:  
Ready (Y/N)?  
Type “ y”  
Streaming data…  
18  
19  
Taking Average…  
Continue test Verify  
Sensor (Y/N)?  
An average will be calculated. Verification Gas2 finished.  
Type “n” to end field verification.  
Verification complete.  
4).  
5).  
If the unit passes Verification, Calibration is not required at this time.  
If the unit fails Verification, you will see the following:  
18  
19  
Taking Average…  
Verify Failed  
An average will be calculated.  
Verification complete.  
6).  
If the unit fails Verification, TELEDYNE ANALYTICAL INSTRUMENTS recommends  
Calibration, detailed in the following section.  
Page 23  
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MODEL 2230R, Process Hydrogen Analyzer  
5.5 CALIBRATION  
Calibration Interval  
Calibration is used to correct any offset that exist between the sensor output and a known  
hydrogen concentration. Calibrations do not cause any wear on the sensor and can be  
accomplished as often as desired. It is recommended that Calibration be performed if a unit  
fails Verification.  
Calibration Procedure  
IMPORTANT NOTE: During the Calibration process any previously completed Field Calibrations  
are cancelled. As a result, during the routine the unit may display a hydrogen concentration  
that is different from the applied gas concentration. This is normal. Once the procedure is  
completed, the readings will be corrected to display the right concentrations for all subsequent  
exposures.  
Calibration can only be accomplished through interface with the unit via the serial port (refer to  
the previous Serial Communication Commands section and the LEVEL 1 COMMANDS table in  
Section 4.3). Analog outputs can be monitored through the user’s system.  
Calibration Using Serial Interface (firmware version 0.47) – Follow the sequence below:  
1) Press Esc”  
2) The unit will return the command prompt “H2scan:”  
3) Type “f” then hit “Enter” and follow prompts to field calibrate the sensor with two gas  
concentrations  
These steps will implement the following specification values as an example; for values in bold,  
please substitute appropriate values relative to your specific operational conditions:  
·
·
·
Local atmospheric pressure: 0.969 ATM  
Hydrogen range: 0% to 30% hydrogen, balance nitrogen  
Field Verification Gas #1: 1% hydrogen, balance nitrogen (instead of gas #1 being 0%  
hydrogen, H2scan recommends Field Verification gases always have a hydrogen  
concentration)  
·
·
Field Verification Gas #2: 30% hydrogen, balance nitrogen  
Settle Time: 30 minutes (TELEDYNE ANALYTICAL INSTRUMENTS recommends this  
duration for field calibration)  
WARNING: AS IN THIS EXAMPLE, FOR OPTIMIZATION, THE HYDROGEN  
CONCENTRATIONS OF THE GASES IMPLEMENTED IN FIELD CALIBRATION  
AND FIELD VERIFICATION MUST BE THE SAME.  
Page 24  
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MODEL 2230R, Process Hydrogen Analyzer  
FIELD CALIBRATION STEPS  
Step  
1
2
Display  
User response  
H2scan:  
Type “ f” to run field calibration  
Type “ y”  
Ready to Calibrate  
(Y/N)?  
3
Pressure is 0.9690  
atm (Y/N)?  
Type “ y”  
Please note that the firmware has remembered the  
atmospheric pressure from the preceding Verification  
procedure. Type “n” if a change is required and enter the  
correct pressure.  
4
5
Save as default  
(Y/N)?  
Gas1 is 0%H2  
(Y/N)?  
Type “ n”  
Type “ n”  
6
7
Gas1 for res (Y/N)?  
Cal Gas: 2.000%H2  
(Y/N)?  
Type “ y”  
Type “ n”  
8
9
Enter gas:  
Cal Gas: 1.000%H2  
(Y/N)?  
Type “ 1” for gas #1, 1% hydrogen by volume  
Type “ y”  
10  
Settle time: 3 min  
(Y/N)? n  
Type “ n”  
11  
12  
Enter time:  
Settle time: 30 min  
(Y/N)?  
Type “ 30” for a 30 minute duration for gas #1  
Type “ y”  
13  
14  
Apply 1.000%H2:  
Ready (Y/N)? y  
Type “ y”  
Streaming data…  
Calibration Gas #1 finished  
Taking Average…  
cap=0.00000  
res=x.xxxxx  
15  
16  
Gas2 for res (Y/N)?  
Cal Gas:  
100.000%H2 (Y/N)?  
Enter gas:  
Cal Gas: 30.000%H2  
(Y/N)?  
Type “ y”  
Type “ n”  
17  
18  
Type “ 30” for gas #2, 30% hydrogen by volume  
Type “ y”  
19  
20  
Settle time: 1 min  
(Y/N)?  
Enter time:  
Type “ n”  
Type “ 30” for a 30 minute duration for gas #2  
Page 25  
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MODEL 2230R, Process Hydrogen Analyzer  
21  
Settle time: 30 min  
(Y/N)?  
Type “ y”  
22  
Apply 30.000%H2:  
Ready (Y/N)?  
Type “ y”  
Streaming data…  
23  
Taking Average…  
cap=0.00000  
res=x.xxxxx  
Calibration Gas #2 finished.  
Calibration complete.  
4) Per TELEDYNE ANALYTICAL INSTRUMENTS’s recommendation, upon completion of  
Calibration, conduct the Verification sequence as described in the previous section to  
verify that the calibration process was executed correctly.  
Page 26  
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