Pressure Regulator Temperature Control; Table 7 Potentionmeter Markings - Csa Version - Michell Instruments Condumax II Installation Operation & Maintenance

OPERATION
3.3

Pressure Regulator Temperature Control

The heated pressure regulator contains an adjustment for the temperature control
set point (factory-set to approximately +40°C (+104°F)). It may need adjustment to
increase/decrease the heat requirements to the regulator dependent on the high/low
inlet gas pressure.
This can be identified by the manufacturer markings:
CSA version
CSA Version - GO HPR-2 Pressure Regulator
To adjust the setting proceed as follows:
1. Unscrew and remove the cover of the junction box after first loosening the
hex grub screw.
2. Adjust the heater output by turning the potentiometer clockwise to increase
and anti-clockwise to decrease.
3. The seven markings around the potentiometer equate to an approximate
temperature value for the heater of:
1 = +75°F (+24°C)
2 = +80°F (+27°C)
3 = +85°F (+29°C)
4 = +95°F (+35°C)
5 = +110°F (+43°C)
6 = +130°F (+54°C)
7 = +175°F (+79°C)
4. Screw back the junction box cover and tighten the hex grub screw.
12
This operation will expose electrical parts operating at high
voltage. Therefore, isolate the power supply from the Sampling
System before making adjustments.
Recommended setting
Other settings may be advised by Michell
Instruments, dependent upon application
Should not be set
Table 7 Potentionmeter markings - CSA Version
Condumax II Sampling System -
NEC Compatible IOM Manual
WARNING
GO HPR-2 markings
97525, Issue 1, November