Dwyer Instruments CHP Series Installation And Operating Instructions

The Series CHP Pneumatic Hand Pump is the most
dependable and rugged pump for applications up to 100
psi or 28.8˝ Hg Vacuum. The durable Acetel plastic and
anodized aluminum construction prevents body heat
transfer, resulting in drift-free, accurate readings. The Series
CHP is equipped with oversized check valves in order to
provide smooth and controlled operation. Dual O-Rings on
all pistons ensure the pump to be leak-free. The unit
includes a 2 foot long hose, 1/8˝ female NPT gauge fitting,
and 1/8˝ NPT pipe plug. An optional hose kit is available so
that a tee is not required when connecting a sensor and a
calibrator. The Series CHP is ideal for checking calibration
of pressure or vacuum gauges, switches, or transmitters.
CAUTION
INSURE ALL GAUGES AND INSTRUMENTS TO BE
CALIBRATED ARE DISCONNECTED FROM PROCESS
PRESSURES BEFORE CONNECTING PUMP. THE
MAXIMUM PUMP DESIGN PRESSURE IS 150 PSIG.
CONNECTION TO A PRESSURE SOURCE GREATER
THAN 150 PSIG COULD CAUSE SERIOUS INJURY.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Series CHP Pneumatic Hand Pump
Specifications - Installation and Operating Instructions
PRESSURE VENTING
VALVE CAP
Phone: 219/879-8000
Fax: 219/872-9057
8-21/32
[219.87]
WHEN PUMP EXTENDED
1/8 NPT PORT
ø1-1/2
[38.1]
1/8 NPT
PIPE PLUG
SHOWN WITH CHIP-KIT INSTALLED
SPECIFICATIONS
Output Range: CHP-P: 0 to 100 psi; CHP-V:0 to -28.8˝
Hg.
Process Connection: Two 1/8˝ female NPT parts, one
with a removable plug.
Materials: Acetel plastic and anodized aluminum.
Pressure Limit: 150 psig.
Temperature Limit: Not to exceed 150°F.
Displaced Volume: Approximately 4 in
Dimensions: 9˝ length x 1.5˝ diameter.
Weight: 1.5 lb (680 g).
OPERATION
Pressure Venting Valve Cap:
The small, knurled pressure relief knob relieves pressure
from the pump. Turning the knob counterclockwise allows
the system to vent in increments as small as 0.01˝ of H2O.
Do not over tighten the valve. See Figure 1.
Figure 1
www.dwyer-inst.com
e-mail: info@dwyer-inst.com
Bulletin TE-CHP
11-19/32
[294.48]
WHEN PUMP EXTENDED
1/4 NPT
GAGE FITTING
3 .