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Teledyne API
– T200 NO/NO
2
/NO
X
Analyzer Operation Manual
Troubleshooting & Service
237
12.3.2.2. RELAY PCA STATUS LEDS
D7 (Green)
– Optional Zero/Span Valve
D11 (Green)
– Optional Dual Span Select Valve
D12 (Green)
– Optional Pressurized Span Shutoff Valve
D3 (Yellow) NO
2
NO Converter Heater
D5 (Yellow)
– Optional Internal Span Gas Gen Heater
D8 (Green)
– Optional Sample/Cal Valve
D1 (RED)
Watchdog Indicator
D2 (Yellow) Reaction Cell Heater
D9 (Green)
– AutoZero Valve
D10 (Green)
– NO/NO
x
Valve
D13 (Green)
– Optional Pressurized Zero Shutoff Valve
Figure 12-3:
Relay PCA Status LEDS Used for Troubleshooting
Table 12-5: Relay PCA Status LED Failure Indications
LED
COLOR
FUNCTION
FAULT
STATUS
INDICATED FAILURE(S)
LED ROW 1
D2
Yellow
Reaction Cell heater
Continuously
ON or OFF
Heater broken, thermistor broken
D3
Yellow
NO
2
converter heater
Continuously
ON or OFF
Heater broken, thermocouple broken
D7
Green
Zero/Span valve status
Continuously
ON or OFF
Valve broken or stuck, valve driver chip broken
D8
Green
Sample/Cal valve status
Continuously
ON or OFF
Valve broken or stuck, valve driver chip broken
D9
Green
Auto-zero valve status
Continuously
ON or OFF
Valve broken or stuck, valve driver chip broken
D10
Green
NO/NO
x
valve status
Continuously
ON or OFF
Valve broken or stuck, valve driver chip broken
LED ROW 2
D5
Yellow
Internal span gas generator
perm tube heater
Continuously
ON or OFF
Heater broken, thermistor broken
D11
Green
Dual span select valve
Continuously
ON or OFF
Valve broken or stuck, valve driver chip broken
D12
Green
Pressurized Span shutoff valve
Continuously
ON or OFF
Valve broken or stuck, valve driver chip broken
D13
Green
Pressurized Zero shutoff valve
Continuously
ON or OFF
Valve broken or stuck, valve driver chip broken
Note: D4, D6, and D14-16 are not indicated as they are not used.
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Содержание T200
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