Emerson ib-106-340cdr, oxymitterdr hazardous area in-siu oxygen probe Analog Electronics, Setup

Instruction Manual

IB-106-340CDR Original Issue January, 2002

Hazardous Area Oxymitter DR

b. WESTINGHOUSE MODELS 218, 225,	5. Adjust potentiometer M110-1 to read -
AND 132 (ANALOG) ELECTRONICS	322.3 millivolts nominal.
SETUP

Before beginning operation, it is important	6.	Remove voltmeter leads.
that the probe heater setpoint of the existing	7.	Remove jumper wire.
electronics be changed to support the Haz-
ardous Area Oxymitter DR In-Situ Oxygen
Probe. The setpoint adjustment procedure		TP1		M110-1
required for Models 218, 225, and 132
analog electronics is as follows:
1. Open electronics enclosure.
2. On temperature controller card, Figure
2-9,connect jumper wire from TP3 to
either Pin 2 or Pin 7.
3. Set voltmeter to read DC millivolts	TP3
(MV).
4. Attach voltmeter with positive (+) lead
on TP1 and negative (-) on either Pin 2
or 7.
NOTE
The voltage given above is for an am-	PIN 2	2	3	5	6	7	10 12
	(PSC)
bient (machinery space) temperature
of 25°C (77°F). For each degree of am-
bient temperature above or below 25°C
(77°F), add or subtract 0.242 mV from
the nominal. Example: at 31°C (87°F),					PIN 7 (PSC)			P0019
the nominal voltage of -322.3 Mv	Figure 2-9. Temperature Controller Card
should be increased (made less nega-
tive) by 10 x 0.242 or 2.42 mV, making		Calibration Points
the adjusted nominal -319.9 Mv.

2-10 Installation Rosemount Analytical Inc. A Division of Emerson Process Management