Teledyne 100AH instruction manual 10-15

Teledyne API Model 100AH SO2 Analyzer Instruction Manual, 02417, Rev. D

Table 10-4: Diagnostic Mode - Signal I/O (Continued)

No.	Signal	Control	Description
19.	ST_TEMP_ALARM	YES	Status Bit - Temperature alarm
			Logic High = Reaction cell, PMT, Box temps out of
			spec
			Logic Low = Temps within spec
20.	ST_DIAG_MODE	YES	Status Bit - In Diagnostic mode
			Logic High = M100AH in Diagnostic mode
			Logic Low = Not in Diag mode
21.	ST_POWER_OK	YES	Status Bit - Power OK
			Logic High = Instrument power is on
			Logic Low = Instrument power is off
22.	ST_SYSTEM_OK	YES	Status Bit - System OK
			Logic High = No instrument warning present
			Logic Low = 1 or more alarm present
23.	ST_HVPS_ALARM	YES	Status Bit - HVPS alarm
			Logic High = HVPS out of spec
			Logic Low = HVPS within spec
24.	PMT_SIGNAL	NO	Current PMT voltage. Same as PMT voltage in
			TEST menu. Bi-polar, typically in 0-5000 mV
			range. A constant value of 5000 mV indicates off
			scale.
25.	RCELL_TEMP	NO	Reaction Cell temperature. 3500 mV for 50°C.
26.	BOX_TEMP	NO	Box Temperature. Typically 1800 mV for 25°C.
27.	PMT_TEMP	NO	PMT cold block temperature. Typically 1800 mV
			for 7°C.
28.	DCPS_VOLTAG	NO	DC power supply composite voltage output.
			Typically 2500 mV.
29.	SAMPLE_PRES	NO	Sample inlet pressure in mV. Typical sea level
			value = 3750 mV for 29.9" HG-A.
30	VACCUM_PRESS	NO	Reaction cell pressure in mV. Typical value = 750
			mV for 6” HG.

(table continued)

10-15