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

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