Rosemount 755R, Инструкция по эксплуатации

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S
TARTUP AND
C
ALIBRATION
748213-P Rosemount Analytical June 1997 3-3
Model 755R Oxygen Analyzer
1. RECORDER OUTPUT selector plug Provides selectable output of 10 mV, 100 mV, 1 V or 5 V for a voltage
recorder.
2. DIGITAL READOUT (R100) Calibration of digital readout.
3. AMPLIFIER U8 ZERO (R29) Initial factory zeroing of amplifier U8.
4. RESPONSE TIME (R30) Adjustment of electronic response time.
5. FULLSCALE OUTPUT (R88) Setting fullscale for 1 V, 0.1 V and 10 mV outputs.
6. DETECTOR COARSE ZERO (R9) Coarse adjustment of detector zero by shifting the position of the detector
within the magnetic field. It is adjusted during factory checkout, and does not
require readjustment except if detector is replaced.
7. CURRENT OUTPUT ZERO (R1) Located on Current Output Board, adjustment for zero-level current output, i.e.,
4mA or 0mA
8. CURRENT OUTPUT SPAN (R2) Located on Current Output Board, adjustment for fullscale current output:
20mA
9. ALARM 2 CALIBRATION (R67) Initial calibration of ALARM 2 circuit.
10. ALARM 2 SETPOINT (R68) Continuously variable adjustment of setpoint for ALARM 2 circuit, for actuation
of external, customer supplied control device(s). Adjustment range is 0 to
100% of fullscale span.
11. ALARM 2 DEADBAND (R78) Adjustment of ALARM 2 deadband circuit from 1% to 20% of fullscale.
Deadband is essentially symmetrical with respect to setpoint.
12. ALARM 1 CALIBRATION (R63) Initial calibration of ALARM 1 circuit.
13. ALARM 1 SETPOINT (R64) Continuously variable adjustment of setpoint for ALARM 1 circuit, for actuation
of external, customer supplied control device(s). Adjustment range is 0 to
100% of fullscale span.
14. ALARM 1 DEADBAND (R73) Adjustment of ALARM 1 deadband circuit from 1% to 20% of fullscale.
Deadband is essentially symmetrical with respect to setpoint.
15. OUTPUT RANGE selector plug Selectable fullscale output range.
16. DETECTOR ISOLATION plug For servicing and testing of the Control Board.
DIGITAL DISPLAY Display (viewed on front panel) indicates oxygen content of sample.
ZERO control (R13) Accessible on front panel, use to establish zero-calibration point.
SPAN control (R20) Accessible on front panel, use to establish span calibration point.
F
IGURE
3-1. C
ONTROL
B
OARD
A
DJUSTMENTS