Instruction Manual

748213-S April 2002

c.U4 Zero

1.Monitor TP5, adjust R100 for 1 VDC

±2mV.

2.Monitor TP10, adjust R13 (ZERO) for 0.0 VDC ±5mV.

d.U8 Zero

Monitor TP11, adjust R29 for 0.0 VDC

±5mV.

e.U10 Zero

1.Monitor TP16, adjust R29 for 0.0 VDC

±5mV.

NOTE:

This adjustment requires a "long time" constant. Allow adequate time.

Model 755R

2.Adjust R29 to obtain a reading of

00.00±5 counts on the display.

f.Fullscale

1.Monitor TP11. Flow 100% oxygen, adjust SPAN potentiometer R20 for

10.00V ±5mV.

2.Monitor TP16, adjust R20 for 10.00 V

±5mV. The display must read 100.00

±5 counts.

g.Recorder Fullscale

1.Flow nitrogen at 250 cc/min, monitor TP16, and adjust front panel ZERO potentiometer for .000 VDC.

2.Flow 100% oxygen for span gas. Re- corder output for 1 V, 100 mV, or 10 mV should read 100% of span gas. Adjust R88 if necessary.

6-8

Maintenance and Service

Rosemount Analytical Inc. A Division of Emerson Process Management