Detcon DM-600IS - Manual (Page 26)

DM-600IS
DM-600IS Instruction Manual Rev 1.5.9 Page 22 of 37
7.1 Normal Operation
In normal operation, the display tracks the current status of the sensor and gas concentration and appears as:
“0 PPM xxx” (the “xxx” is the abbreviated gas type, i.e. “0 PPM H2S”. The mA current output corresponds
to the monitoring level of 0-100% of range = 4-20 mA.
7.2 Calibration Mode
Calibration mode allows for sensor zero and span adjustments. “1-ZERO 2-SPAN”
7.2.1 Zero Adjustment
Zero is set in ambient air with no target gas present or with zero gas applied to the sensor. “AUTO ZERO”
7.2.2 Span Adjustment
Span adjustment is performed with a target gas concentration of 50% of range in air or nitrogen. Span gas
concentrations other than 50% of range may be used. Refer to section 7.3.4 for details. “AUTO SPAN”
7.3 Program Mode
The program mode provides a program status menu and allows for the adjustment of alarm set point levels and
the programming of the calibration gas level setting.
7.3.1 Program Status
 The program status scrolls through a menu that displays:
 The software version number.
 Range is ###
 The alarm set point level of alarm 1. The menu item appears as: “ALM1 SET @ ##PPM”
 The alarm firing direction of alarm 1. The menu item appears as: “ALM1 ASCENDING” or
descending.
 The alarm relay latch mode of alarm 1. The menu item appears as: “ALM1 NONLATCHING” or
latching.
 The alarm relay energize state of alarm 1. The menu item appears as: “ALM1 DE-ENERGIZED” or
energized.
 The alarm set point level of alarm 2. The menu item appears as: “ALM2 SET @ ##PPM”
 The alarm firing direction of alarm 2. The menu item appears as: “ALM2 ASCENDING” or
descending.
 The alarm relay latch mode of alarm 2. The menu item appears as: “ALM2 LATCHING” or non-
latching.
 The alarm relay energize state of alarm 2. The menu item appears as: “ALM2 DE-ENERGIZED” or
energized.
 The alarm relay latch mode of the fault alarm. The menu item appears as: “FLT NONLATCHING”
or latching.
 The alarm relay energize state of the fault alarm. The menu item appears as: “FLT ENERGIZED” or
de-energized.
 The calibration gas level setting. The menu item appears as: “CalLevel @ xxPPM”
 Identification of the RS-485 ID number setting. The menu item appears as: “485 ID SET @ ##”
 The estimated remaining sensor life. The menu item appears as: “SENSOR LIFE 100%”