iTrans Fixed Point Single/Dual Gas Monitor Operation
(P/N: 77023554-1) iTrans User Manual 5-1
5.1. Initial Start-up
Once power is applied (12-28 VDC), the is operational. The LED
display powers up, and the system enters a start-up period. During this start-up
period, the identifies the sensors that are connected and then enters a
three minute warm-up period.
NOTE: Upon initial power up, broadband infrared (BBIR) sensors do not store or
transmit the default values for Low Alarm, High Alarm, and 4-20 mA range to the
unit. These values are set to zero, and must be set following the
procedures outlined later in this manual.
5.2. Warm-up Period
During this warm-up period, the
4-20 mA outputs are limited to 3 mA
(16 mA for oxygen). After the three
minute warm-up, the unit will enter
the Normal Operating Mode. If during
the warm-up period, the unit fails a
self test, the display will show a fault
code, and the fault relay will be
activated. Fault codes are located in
Chapter 8.
Figure 5-1. Sample Fault Code Display
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