GF SIGNET 5900, Руководство пользователя

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pg 10 of 12 ‡ SIGNET 5900 Salinity Monitor
12. Maintenance
Clean the instrument case and front panel with a soft cloth and a mild liquid soap solution.
11. Troubleshooting
Display
1. 0.0 /PPT
- - - - - -
°
C
or
- - - - - - - PPT
- - - - - -
°
C
2. 0.0 PPT
25.0
°
C
3. - - - - - - - PPT
25.0
°
C
4. Too Much Error
Check Sensor
5. Reset to Factory
Calibration
6. SETUP READ ERROR
Press any key
Problem
Temperature wiring shorted or
temperature element in sensor
bad.
A) Sensor not connected or
improperly connected.
B) Pipe empty or sensor not in
solution.
C) Wrong range selected.
D) TC% set incorrectly for
process temperature.
E) Sensor wiring open.
F) Water too cold for high-purity
water measurement.
A) Sensor not connected or
improperly connected.
B) Wrong range selected.
(cell constant too large)
C) TC% set incorrectly for
process temperature.
Temperature input out of
tolerance during WET CAL
procedure.
Zero entered as solution
conductance or resistance
during WET CAL step 2.
Power fault occurred while
saving setup menu entry.
Solution
A) Verify sensor wiring.
B) Verify instrument temperature input:
•
Remove Black and White sensor wires from rear Temp. IN and Iso.
Gnd terminals, then place a 1100
Ω
resistor across terminals.
• Power instrument and verify approximately 26.0
°
C (79
°
F) on display.
If instrument reads correctly, replace sensor. If error condition
persists, instrument requires factory service.
A) Verify sensor wiring
B) Fill pipe or place sensor in process solution.
C) Choose a sensor with cell constant adequate for process solution.
D) Set TC% to 2%
E) Replace sensor
F) See specifications section for recommended high-purity range and
temperature requirements.
A) Verify sensor wiring including cable splice; cable shield must
continue through splice.
B) Choose a sensor with cell constant adequate for process solution.
C) Set TC% to 2%.
Exit WET CAL procedure by pressing UP and DOWN arrow keys
simultaneously, then refer to solution steps 1B above to verify sensor
temperature input.
Measured conductivity, resistivity or PPT entered as zero during WET
CAL step 2. Operator can enter zero to quickly recall factory defaults.
Press any key to reload factory defaults then reprogram conductivity
system setup parameters.