Dwyer BCHP - Manual

Bulletin TE-BCHP
The Series BCHP Calibration Test Pump is able to generate pressure
and vacuum for adjusting or calibrating pressure gauges, transmitters, or
switches. The pump is hand operated and has a pneumatic pressure
range of -28 in Hg to 870 psi (-0.95 bar to 60 bar). Dual pressure ports
allow two instruments to be connected to the pump without additional
fittings. The Series BCHP can be used in laboratories and production
areas. The fine adjustment valve on this pump ensures precise
measurements.
PRODUCT OVERVIEW
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS:
Media: Air.
Output Ranges: -28 in Hg to 870 psi (-0.95 to 60 bar).
Process Connections: 1/4˝ female BSP
Gauge Connection: 1/2˝ female BSP.
Materials: Anodized aluminum, brass, and ABS.
Weight: 8.4 lb (3.8 kg).
Specifications - Installation and Operating Instructions
Series BCHP Low Pressure Hand Pump
11/32
[8.67]
9/64
[3.61]
11/32
[8.91]
3-3/16
[81.02]
43/64
[16.88]
APPROX. 18˝
1/4˝ FEMALE BSP W/
O-RING TEST GAGE
CONNECTION
29/64
[11.54]
7/8
[22.07]
61/64
[24.26] 29/64
[11.43]
1-13/32
[35.83]
3-3/16
[81.02]
1/2˝ FEMALE BSP
W/ O-RING
REFERENCE PORT
4-27/64
[112.40]
1-25/32
[45.16]
2-3/64
[51.85]
3-1/64
[76.57]
Figure 1
1. Pressure connector
for reference instrument
1/2˝ BSP female rotating
2. Fine adjustment knob
3. Pressure relief knob
4. Change-over switch for
pressure/vacuum generation
5. Pressure connector for test
instrument 1/4˝ BSP female
rotating
6. Pump handle
Do not use tape sealant to seal the ports, as it may damage the
pump. NOTICE
MOUNTING INSTRUCTIONS
The reference instrument is to be mounted on the top connection of the
pump. Fastening with the knurled nut by hand is sufficient. An integral O-
ring seals the reference instrument pressure port without the use of
teflon tape.
The test instrument is attached to the connection at the end of the hose.
The optional NPT adapter set includes sealing gaskets and different
adapters to best fit the instrument being tested. The tube can also be
removed to attach the test instrument directly to the pump using the
same adapter.