>55.=27$!
')"#$"%$#
!187. @@@-@B.;27<=,86
! (D$)%# *A .6*2527/8-@B.;6*25,86
#9.,2/2,*=287< 9.;*=2707<=;>,=287<
8-.5!G*7-!>69
$1. 8-.5 !G*7- !>69 provides a dual source of pneumatic pressure and
vacuum for verifying the calibration of pressure instrumentation. Pump can
generate pressures up to 45 psi (3 bar) and vacuum to -27˝ Hg (-910 mbar). The
compact pump is designed for portability and single hand operation.
Model HP features a pressure relief valve and fine adjustment for control better
than 0.0015 psi (0.1 mbar). Pump includes two 39˝ (1 m) hoses terminating in 1/4˝
female NPT connections and instruction manual.
%")
1. Pressure release valve
2. Fine adjustment control
3. Pressure/vacuum selector
4. Knurled “quick fit” connectors
5. Two flexible hoses to item under test and master instrument
6. NPT adaptor set
7. Pump handle
8. Pressure relief valve
#!$ #
>=9>="*70.<-27˝ Hg to 45 psi (-910 mbar to 3 bar).
!;8,.<<877.,=2871/4˝ female NPT (quick fit).
27.-3><=6.7=Better than 0.0015 psi (0.1 mbar).
*=.;2*5<Nickel plated brass and anodized aluminum.
'.201=20 oz (587 g).
1
2
3
4
6
7
8
P
USH
FOR
PRESSURE
5
3
-17/64
[
83]
M
AX
4-1/16
[103]
MAX
5
-29/32
[
150]
Ø
1-13/16
[
46]
Ø
1-13/16
[
46]
Q
UICK CONNECT
F
ITTINGS
20>;.
©Copyright 2015 Dwyer Instruments, Inc. Printed in U.S.A. 2/15 FR# 443775-00 Rev. 1
')"#$"%$#
!187. @@@-@B.;27<=,86
! (D$)%# *A .6*2527/8-@B.;6*25,86
#"!$ G G)G$#
"
.5.*<.&*5?.
T
his can be used to reduce or release the pressure in the system. The rate of
p
ressure reduction is dependent upon the degree of rotation when opening the
valve. Minimal force is required to seal the system.
27.-3><=6.7=87=;85
T
he pressure generated can be finely adjusted by turning the fine adjustment
c
ontrol (2) in or out to increase or decrease pressure accordingly.
698;=*7=G878=@27-=1./27.*-3><=6.7=,87=;85*7B/>;=1.;@1.7=1.
=898/=1.9>69+8-B2<?2<2+5.
!;.<<>;.&*,>>6#.5.,=287
P
ress the selector (3) as indicated on the label to engage the desired mode.
E
nsure that the Release Valve (1) is open before changing mode.
!;.<<>;.!8;=<
The hoses (5) and adaptors (6) are fitted by simply screwing them into the
connectors (4) by turning the knurled nut on the connector fully anti-clockwise.
-3><=*+5.!;.<<>;.".5.*<.&*5?.
(
For protection of sensitive instruments)
T
he maximum output pressure can be set using the pressure relief valve located
inside the main Piston, accessed via the handle retaining screw (adjustment range
between 50 mbar and 3 bar).
8=.G$1.9>69<18>5-875B+.><.-/8;9;.<<>;2C270<6*55?85>6.<->.=8
2
=<<6*55-2<95*,.6.7=/=1.9>691*<78=+..7><.-/8;*9.;28-8/=26.2=
,
8>5-+.-2//2,>5==889.;*=.87=1./2;<=<=;84.
'"878=,877.,==8.A=.;7*59;.<<>;.<8>;,.
%#G "G%#
*52+;*=287,869*;2<87*0*27<=*7*5800*0.
Connect a test gage using appropriate adaptor and sealing to one of the flexible
h
oses (5) or directly to body using adaptor (6).
Connect item under test using appropriate adaptor and sealing to the second
flexible hose (5) or directly to body using adaptor (6).
8=.G-*9=8;<=201=.7.-=8*6*A26>6=8;:>.8;G6
Screw fine adjustment control (2) in fully and then out 4-6 full turns.
Screw pressure valve (1) in fully, tightening to ensure good seal.
Using a flat blade screwdriver (2.5 mm wide max), adjust the pressure relief
v
alve (8) to se the desired maximum output pressure. Turn the grub screw located
i
n the main piston clockwise to increase or anti-clockwise to decrease the pressure
setting.
Operate handle (7) until the pressure is close to that finally required.
Wind the fine adjustment control (2) in to increase pressure or out to decrease
p
ressure until required pressure is reached.
8=.G$1. 9;.<<>;. 6*B =*4. >9 =8 <.,87-< =8 <.==5. */=.; 27,;.*<270
9;.<<>;.->. =8=1.;68-B7*62, .//.,=< <.==52708/ <.*5<*7- .A9*7<287 8/
=1./5.A2+5.18<.
=
1.=898/=1.9>69+8-B+.,86.<?2<2+5.
Reductions in pressure can also be achieved by careful use of the pressure
release valve (1).
Vacuum is achieved using the above procedure and having the
pressure/vacuum selector (3) pushed completely towards the vacuum position.
8=.G".5.*<.9;.<<>;.+./8;.,1*7027068-.
*>5=7?.<=20*=287
In the event that the pump appears to lose pressure then the procedure above
should be repeated ensuring new seals are used, adaptors are tightened
sufficiently and the pressure release valve (1) is tightened firmly.
8=.G$1.,877.,=287<=8=1.1*7-1.5-=.<=<B<=.6*;.<.*5.-@2=1E8F;270
8;+87-.-<.*5<*7-<18>5-78=5.*4
G $ attempt to tighten the other fittings to the pump as this could lead to
damage of sealed joints. When testing for leaks it may be noticed that air is drawn
in or expelled from around the pressure/vacuum selector. This is normal and
should cause no concern.
-
1
-
2
Dwyer HP User manual
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- User manual
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