Instruction Manual

748213-S April 2002

Model 755R

4.Apply power to instrument and allow to warm-up approximately one hour.

5.Set front panel ZERO at mid-range (i.e., five turns from either end).

6.Connect digital voltmeter from slider of R9 to chassis ground. With a steady flow of 50 to 500 cc/min of ni- trogen zero gas going through instru- ment, adjust R9 for 0 V.

7.Connect the voltmeter between TP10 and circuit ground (TP7). Adjust front panel ZERO for reading of exactly zero on voltmeter.

All internal adjustments are now properly set. The instrument may be calibrated per Section 3-4, page 3-1.

DETAIL A

1/4"

Set Screw

Red Mark for

Alignment

DETAIL B

Voltmeter

 

Lead

R10

C8 C1 R8 R7

Figure 6-4. Lamp Replacement

6-6

Maintenance and Service

Rosemount Analytical Inc. A Division of Emerson Process Management