Dwyer DPGW - Manual

DWYER INSTRUMENTS, INC. Phone: 219/879-8000 www.dwyer-inst.com
P.O. Box 373 • Michigan City, IN 46361-0373, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
The Series DPGA & DPGW Digital Pressure Gages have a
precise +/- 1.0% full scale accuracy. The 4 digit digital display
will reduce the potential for errors in readings by eliminating
parallax error commonly produced with analog gages.
The DPGA & DPGW are packaged in an ABS plastic case. The
unit is battery powered and has an auto-shut off to conserve
battery life. A two button key pad allows easy access to features
without the need to work through complex menus. These
features include, auto zero and conversion of the pressure units.
Readings may be converted to various engineering units. See
reverse page for available units.
OPERATING INSTRUCTIONS
For complete instructions on the two button operation see the
flow chart provided on back.
On/Off: Press ON/OFF to toggle on and off. Device will
automatically shut off after 20 minutes if not used.
Zero: Zeros the display - Push & hold for 2 seconds to zero the
display. If after pressing zero the display does not re-zero, the
unit is no longer meeting specified accuracy and should be sent
back to the factory for calibration. Do not use the zero button
when pressure is applied.
Units: To change units, press both On/Off and Zero buttons
simultaneously.
Overpressure Indicator: The LCD will flash “OFL”, if the
pressure applied is over 105% F.S.
INSTALLATION
When installing gage always use 1˝ hex at the base of the
housing to tighten the gage to a mating fitting. Do not apply
wrench to housing.
MAINTENANCE
Battery Removal:
Remove the screw on backplate. Lift
backplate off by hand. To reassemble replace backplate and
screw.
Replace batteries per polarity indicators.
A “LOW BAT” descriptor indication will appear on the display
when batteries need to be replaced.
Series DPGA & DPGW Digital Pressure Gages
Specifications - Installation and Operating Instructions
Bulletin A-34C
ø2-43/64
[67.87]
3-11/16
[93.66]
STANDARD RANGES
CERAMIC RANGES
4-9/64
[105.17]
1-1/2 [38.10]
1-1/4 NPT
SPECIFICATIONS
Service: DPGA: Air and compatible gases; DPGW: Liquids
and compatible gases.
Wetted Materials:
DPGA: 316L SS, Silicone sensor;
DPGW: Type 316L SS; Ceramic Ranges: Type 316L SS,
ceramic, fluoroelastomer.
Housing Materials: ABS plastic.
Accuracy: ±1.0% F.S. (Includes linearity, hysteresis,
repeatability).
Pressure Limits: 2X pressure range. Vacuum range max.
pressure is 30 psig.
Temperature Limits: 30 to 120°F (-1 to 49°C).
Thermal Effect: 0.05% FS/°F.
Size: 2.62˝ O.D. x 1.52˝ deep.
Process Connections: 1/4˝ male NPT.
Display: 4-digit LCD (.425˝ H x .234˝ W digits).
Power Requirements: 9 volt alkaline battery. Battery included
but not connected.
Auto Shut-off: 20 minute auto shut-off.
Weight: 5.6 oz (160 g).
A-34C:A34B Bulletin 8/19/09 3:17 PM Page 1