DH Instruments MPG1 WITH PG7302 User manual

INTERCONNECTION KIT FOR MPG1 WITH
RPM4 OR PG7302, P/N 402265, INCLUDES:
DESCRIPTION PRESSURE
RATING QTY PART NO.
Nipple, 6 in.
(152 mm), DH500 500 MPa (72 500 psi) 1 103975
Nipple, 12 in.
(305 mm), DH500 500 MPa (72 500 psi) 1 103976
Nipple, 5 in. x 1/8 in.
(127 mm x 3 mm),
DH500 tips
200 MPa
(30 000 psi) 2 123019
Tee DH500 400 MPa
(60 000 psi) 1 100291
Plug DH500/DH700 700 MPa
(100 000 psi) 1 100285
Adaptor, DH500F x
1/8 in. (3 mm) NPTM 200 MPa (30 000 psi) 2 102819
INTRODUCTION
This kit provides the tubing and fittings necessary to
connect an MPG1 pressure controller to either an
RPM4 reference pressure monitor or to a PG7302
piston gauge, and also to a device under test. This
document contains instructions for connecting the
fittings and tubing.
INSTALLATION OF INTERCONNECTIONS
nRemove Plugs from MPG1 and RPM4 or
PG7302: Unscrew the glands from the test ports
of the MPG1 and RPM4 or PG7302. Remove the
collar and plug from inside each gland. There
should be two plastic plugs and one stainless steel
plug. The plastic plugs will not be used. Keep the
stainless steel plug.
oInstall glands and collars onto flexible 5 in.
nipples: Slide a gland over a nipple so that the
threads of the gland face outward. Next, screw a
collar onto the nipple by turning it to the LEFT.
Allow two nipple threads to show between the
collar and nipple tip.
paRPM4 – Install glands and collars onto the 6 in.
nipple.
pbPG7302 – Install glands and collars onto the
12 in. nipple.
qInstall nipples into three way tee: Install the 5 in.
nipple into the center port of the three way tee.
Install either the 6 in. or 12 in. nipple into either of the
end ports on the three way tee as shown in Figure 1.
Tighten the nipples with a 5/8 in. wrench or crescent
wrench. The thick nipple on the right connects to the
MPG1. The thin nipple in the center of the plug
connects to the RPM4 or to the PG7601. In Figure 1
the left port is currently plugged, but the remaining
thin 5 in. nipple can go in the left port and connect to
the DUT.
Figure 1: Two nipples installed in 3-way tee.
rOptional: Extend the front feet on RPM4: The front
feet of the RPM4 can be extended so that the RPM4
is inclined for easier reading and display access.
sRPM4 A70M or less - install NPT adaptor into
RPM4. RPM4s that have ranges of 70 MPa
(10 000 psi) or less have 1/8 in. NPTF test ports.
These ports require the use of one of the DH500F
by 1/8 in. NPTM adaptors. Wrap Teflon®thread
tape around the NPT threads of the adaptor three
times, and install the adaptor into the RPM4.
tInstall the free end of the center nipple into
RPM4 or PG7302: The center, thin, 5 in. nipple
should be inserted into the test port of the RPM4 or
PG7302. Screw in the gland loosely by hand. The
nipple can be bent slightly to ensure that nipple
enters straight into the test port. Do not tighten the
gland in the RPM4 or PG7302 yet, since it will be
tightened when the system is primed.
Interconnection Kit
For MPG1 with RPM4 or PG7302
P/N 402265
Instruction Sheet

Document 560080b 070208
DH Instruments, Inc.
4765 East Beautiful Lane
Phoenix AZ 85044-5318
USA
Tel [phone]
Fax [phone]
[email protected]
www.dhinstruments.com
Install the 6 in. or 12 in. nipple into the MPG1.
Screw in the glands loosely by hand. Tighten the
gland with a 5/8 in. wrench or crescent wrench.
Install a DH500M to 1/8” NPT male adaptor in
the DUT if necessary: The 1/8 in. NPT male
adaptor can be used to connect the remaining thin
5 in. nipple to DUTs with 1/8 in NPT female ports.
If you intend to use the adaptor, wrap Teflon®
thread tape around the NPT threads three times
and install it into the DUT.
Install the Device Under Test (DUT). The DUT
will be connected to the test line with the
remaining thin 5 in. nipple. This nipple can be
installed either in the 3-way tee, or in the port on
top of the MPG1. The tube can be slightly bent if
necessary. Install the nipple in the desired
location. Tighten the gland in the tee or MPG1, but
do not tighten the gland that connects to the DUT.
Plug the open test port: There is an open test port
either on the top of the MPG1, or on the 3-way tee.
Insert the stainless steel plug into a gland. Insert the
plug and gland into the open port. Do not tighten.
Prime the system, tighten fittings: Pump fluid
through the nipples by using the MPG1. See the
appropriate section of the MPG1 Operation and
Maintenance Manual for this procedure. Make
sure that all air is purged from the test lines.
There are 3 loose fittings: one on the DUT, one on
the RPM4 or PG7302, and the other on the plug.
Tighten each of the loose fittings when oil without
bubbles begins to flow through it.
The maximum operating pressure of the variable volume is
100 MPa (15 000 psi) in MPG1-100M and 200 MPa (30 000 psi)
in MPG1-200M. Do not generate pressure greater than the
maximum operating pressure.
High pressure fluids are potentially hazardous. Energy
stored in pressurized fluids can be released unexpectedly and with
extreme force. High pressure systems should be assembled and
operated only by personnel who have been instructed in proper
safety practices.
ALWAYS use external tubing and fittings rated for
pressures equal to or greater than the maximum pressure which
MPG1 will be used to generate.