High-Pressure Modular Controller
PMM Installation
9
To install the PMMs:
W
Caution
To prevent damage to the sensors inside the modules, do not
drop the modules.
1. Remove the PMM from its shipping box.
2. Remove the protective plastic cover from the PMM test and reference port.
3. Confirm that the test port and reference port O-rings are properly installed on
the module and are not torn or damaged. Additional O-rings are available in
case they become lost or damaged.
4. Open the front panel to access the Module Bay as described in the
Access
the Module Bay
section.
5. The PMM has a slot on the bottom of it that fits into the track that lies on the
bottom of the inner Product case, see Figure 1 (
). Line the track up with the
slot and slide the PMM into the bottom case until it stops. See Figure 2.
6. Turn the knob on the PMM clockwise until it clicks one time to tighten it,
modules less than or equal to 44 MPa (6300 psi). High-pressure modules,
with full scales greater than 44 MPa (6300 psi), use a standard hex bolt for
tightening the pressure connection. A 6 mm hex head wrench is required to
connect the module (provided with the chassis). There is no torque limiting
feature on these high pressure modules. The recommended torque is
10-14 N ꞏ m (7 - 10 lbf ꞏ ft).
Note
The PMM knob is a torque-limiting knob that slips once the proper
amount of torque is applied. This prevents accidental over-tightening
that can damage the manifold.
7. After tightening the PMM to the manifold, the module should automatically
appear on the display. Check the main display to see if the PMM is properly
installed.
Note
When the Module Bay is opened, the front-panel display shows the
slots and visually displays the PMMs installed. This provides a
method to quickly ensure the newly installed PMM is connected and
communicating.
8. Repeat this procedure for any other PMMs.
9. Close and latch the front panel.
