Multi-Zone Gas Monitors
P/N: 3015-5074 Rev 11 59
B.3.9. Fault Code Table
BIT Fau lt Type Code Description
0x8000 Sensor output voltage too high
Sensor output voltage outside limits during purge
Gas concentration above measurable range
No flow detected during purge cycle
No flow detected during sample cycle
Analog to digital converter not working
Digipot gain setting out of normal range
Charcoal filter (if used) needs replacement
4 LOOP FAULT 0x0010 Current loop is open
Pressure sensor readings are out of range
Sensor temperature is out of range
Chassis temperature is out of range
B.3.10. Zone Data Register 0x12xx (R/W, 78 Bytes)
Each zone for an MZ has a separate zone data structure that is 78 bytes long. The zone number is the low
order byte in the register address (i.e., Zone 1 data register = 0x1201h).
Variable Type Length Description
13 byte array, Alpha Numeric Description or Name of Zone
Flow OK UC 1 byte
Status of Flow check. Value of 1 indicates flow check is good. DO NOT
MODIFY.
Refrigerant
Type
UC 1 byte See note 1 Below (DEFAULT = R134a)
Zone Tubing Length (in feet) (DEFAULT = 100 feet [approx. 30.5 meters])
Average temperature at zone (degrees C) (DEFAULT = 25°C)
Last Measured concentrations (uM/L) DO NOT MODIFY
Last Measured concentration (PPM) DO NOT MODIFY
Alarm Ack UC 1 bytes
Set value to 1 to acknowledge Alarm.
NOTE: MZ will reset this byte to 0 when the Alarm byte
(below) is = 0 and zone in alarm is sampled. If the alarm
condition/byte increases (leak>>s pill or spill>>evac) the MZ
will also reset this byte to 0.
Alarm Status; 0 = no alarm, 1 = leak; 2 = spill; 3 = evac.
Level to trigger a leak alarm (in PPM) (DEFAULT = 100)
Level to trigger a spill alarm (in PPM) (DEFAULT = 300)
Level to trigger a evacuate alarm (in PPM) (DEFAULT = 500)
Highest Recorded PPM in zone
Date an time of highest peak (see note 2 for format)
Date and time of last alarm (see note 2 for format)
Number of minutes between Log entries (DEFAULT = 1440)
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