Specifications

Multi-Zone Gas Monitors
P/N: 3015-5074 Rev 10 59
B.3.9. Fault Code Table
BIT Fault Type Code Description
15 CLIPPING FAULT 0x8000 0x8000 Sensor output voltage too high
14 ZERO RANGE FAULT 0x4000 Sensor output voltage outside limits during purge
13 OVER RANGE FAULT 0x2000 Gas concentration above measurable range
12 PURGE FLOW FAULT 0x1000 No flow detected during purge cycle
11 ZONE FLOW FAULT 0x0800 No flow detected during sample cycle
10 A2D FAULT 0x0400 Analog to digital converter not working
9 GAIN SET FAULT 0x0200 Digipot gain setting out of normal range
8 ZERO FILTER FAULT 0x0100 Charcoal filter (if used) needs replacement
7 CONFIG FAULT 0x0080 No zones are enabled
6 UNUSED FAULT 2 0x0040
5 UNUSED FAULT 1 0x0020
4 LOOP FAULT 0x0010 Current loop is open
3 RS485 FAULT 0x0008 Communications error
2 MANIFOLD P FAULT 0x0004 Pressure sensor readings are out of range
1 BENCH T FAULT 0x0002 Sensor temperature is out of range
0 BOX T FAULT 0x0001 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
Location C 13 bytes 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)
Distance UI 2 bytes Zone Tubing Length (in feet) (DEFAULT = 100 feet [approx. 30.5 meters])
Zone Temp I 2 bytes
Average temperature at zone (degrees C) (DEFAULT = 25°C)
Concentration Float 4 bytes
Last Measured concentrations (uM/L) DO NOT MODIFY
Concentration2 Float 4 bytes
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>>spill or spill>>evac) the MZ
will also reset this byte to 0.
Alarm UC 1 bytes Alarm Status; 0 = no alarm, 1 = leak; 2 = spill; 3 = evac.
Leak Level UI 2 bytes Level to trigger a leak alarm (in PPM) (DEFAULT = 100)
Spill Level UI 2 bytes Level to trigger a spill alarm (in PPM) (DEFAULT = 300)
Evac Level UI 2 bytes Level to trigger a evacuate alarm (in PPM) (DEFAULT = 500)
Peak PPM UI 2 bytes Highest Recorded PPM in zone
Peak Time TIM 13 bytes Date an time of highest peak (see note 2 for format)
Alarm Time TIM 13 bytes Date and time of last alarm (see note 2 for format)
Alarm Ack/Time 13 bytes
Log Interval UI 2 bytes Number of minutes between Log entries (DEFAULT = 1440)