Omega Engineering Marine Instruments DPG1100AD User Manual

Digita l Pre ssure Ga uge s  
DPG11 0 0 AD Se rie s, NEMA 4 X, Low Volta ge AC/ DC Powe re d  
DPG11 0 0 ADBL Se rie s, NEMA 4 X, Low Volta ge AC/ DC  
Powe re d with Ba cklit Displa y  
INSTRUCTION  
SHEET  
M3 7 6 3 / 11 01  
NEVER connect the gauge wires directly to 115 VAC or  
permanent damage not covered by warranty will result.  
Description  
Calibration  
The DPG1100AD and DPG1100ADBL are designed for  
industrial applications where a continuous display of  
pressure (or vacuum) is required. The temperature  
compensated piezoresistive transducer features 316  
stainless steel wetted parts.  
Remove the calibration potentiometer covers on the front  
of the unit to access the zero and span controls.  
After the gauge is installed, route the wires safely and  
connect the AC adapter’s wires to the gauge cable.  
Lastly, plug the AC adapter into a 115 VAC outlet.  
GAUGE reference units may be re-zeroed without  
affecting the span calibration. The gauge port must be  
open to the ambient with no pressure or vacuum  
applied. Adjust the Zero control until the gauge reads  
zero with the minus (–) sign occasionally flashing.  
The only important consideration is to ensure that the  
gauge supply voltage does not fall below 8 VAC RMS if  
AC power is used, or 9 VDC if DC power is used.  
Operation with less than these values may cause erratic  
or erroneous readings.  
Installation Precautions  
Tighten/remove with wrench on hex fitting only. Do not  
attempt to rotate gauge by turning housing. Use fittings  
appropriate for the pressure range of the gauge. Do not  
apply vacuum to gauges not designed for vacuum  
operation. NEVER insert objects into the gauge port or  
blow out with compressed air. Permanent damage not  
covered by warranty will result to the sensor.  
Span calibration should only be attempted if the user  
has access to a pressure reference of known accuracy.  
The accuracy of the calibration equipment should be at  
least four times the gauge accuracy. Zero calibration  
must be done before span calibration. Record readings  
at three to five points over the range of gauge and adjust  
span control to minimize error and meet specifications.  
If your application requires operation of multiple gauges  
from the same power supply, consult the factory for  
wiring recommendations.  
Operation  
The DPG1100AD and DPG1100ADBL can be powered  
by any AC source of 8 to 24 VAC 50/60 Hz, or any DC  
source of 9 to 32 VDC. The gauges can be used with  
inexpensive unregulated low voltage AC or DC power  
supplies. The type and magnitude of the supply voltage  
have negligible effects on the gauge calibration as long  
as it is within the voltage ranges stated above. No  
polarity needs to be observed when connecting a DC  
supply.  
When a supply voltage is applied, the gauge will be  
ready to use. If the gauge display is off, press the center  
button to turn the gauge on. If the gauge is in the power-  
on state and the power is disconnected, the gauge will  
turn on when power is reapplied. The gauge can be left  
on continuously or turned off when not in use.  
ABSOLUTE reference gauges require vacuum  
generation and atmospheric pressure measurement  
equipment for accurate calibration and thus are more  
difficult to calibrate in the field.  
Gauges may be returned to Omega Engineering for  
recalibration. N.I.S.T. traceability is available.  
DPG1100ADBL model display backlighting will be on  
whenever gauge is on.  
Optional Power Supply Kit DPG1000-PS  
The kit includes a UL and CSA listed 115 VAC (50/60  
Hz) wall-mount power supply with U.S.-style 2-prong  
plug. Output is 12 VDC at 200 mA. The two-conductor  
wire is approximately 6 feet long with stripped wire  
ends. Use a pair of pliers to connect gauge and power  
supply wires using the included moisture-resistant  
connector.  
3 ft long,  
2-conductor,  
22 AWG  
3.0"  
shielded cable  
PSIG  
Span  
Zero  
OMEGA Engineering Inc. / Made in USA  
Turn at hex  
fitting only!  
1
0.75"  
/
4" NPT  
0.75"  
2.0"  
3.5"  
SPECIFICATIONS  
Ranges & Resolution  
–30.0 inHg vac to 15.0 psig  
–30.0 inHg vac to 100.0 psig  
30.0 inHg vacuum, ±15.00 psig  
3.00, 5.00, 15.00, 30.0, 100.0, 199.9 psig  
300, 500, 1000 psig  
Temperature Stability (relative to 77°F or 25°C)  
±1% FS for offset & span, 32 to 158°F (0 to 70°C) typical  
±2% FS for offset & span, 32 to 158°F (0 to 70°C) typical  
for 3 and 5 psi ranges  
Housing  
NEMA 4X  
UV stabilized polycarbonate/ABS case, light gray color  
Clear polycarbonate window to protect display  
Gasketed rear cover, six captive stainless steel screws  
Controls & Location  
Pressure/Vacuum Connection and Material  
Front button turns gauge on or off  
Front-accessible calibration potentiometers  
Non-interactive zero & span, ±10% range  
Absolute reference: 15.00, 100.0 psia  
1
/
4" NPT male, all wetted parts are 316 SS  
Optional Units  
Overpressure & Burst  
Most engineering units such as kPa, atm, bar, mbar,  
Power  
AD: Approximately 5 mA  
ADBL: Approximately 80 mA  
Operates on 8 to 24 VAC 50/60 Hz or 9 to 32 VDC  
Optional wall mount power supply is available to operate  
on 115VAC  
5000 psig for metric units using 3000 psig sensor  
7500 psig for metric units using 5000 psig sensor  
All others 2x rated pressure minimum  
Burst: 4x rated pressure minimum or 10,000 psi,  
whichever is less  
inHg, mmHg, inH2O, ftH2O, torr, kg/cm2, cmH2O, oz/in2  
Display (type, size, update rate)  
31/ digit LCD, 1/2" digit height  
2
3 readings per second nominal display update  
ADBL: Red LED display backlighting when gauge is on  
Storage temperature: –40 to 203°F (–40 to 95°C)  
Operating temperature: –4 to 185°F (–20 to 85°C)  
Compensated temperature: 32 to 158°F (0 to 70°C)  
Accuracy (linearity, hysteresis, repeatability)  
±0.25% of full scale or better, ±1 least significant digit  
Weight (approximate)  
Gauge: 9 ounces, shipping weight: 1 pound  
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