Detcon 1000 - Manual (Page 17)

Mdl 1000 H2S E-Chem / Inst. Air
Model 1000 H2S E-Chem w Instrument Air Rev. 1.1 Page 13 of 28
5.2.2 Calibration Mode
Calibration mode allows for sensor zero and span adjustments. It uses an “AUTO SPAN” sequence with built
in diagnostics to ensure adequate sensor response and signal stability. “1-ZERO 2-SPAN”
Zero Adjustment
Zero is set with no H
2
S target gases present. “AUTO ZERO”
Span Adjustment
Span adjustment is performed with a target gas concentration of 10 ppm H
2
S in nitrogen. Span gas
concentrations other than 10 ppm may be used. “AUTO SPAN” See Table 3 Sample Flow Rate
5.2.3 Program Mode
Program Mode provides a program status menu (View Program Status) to check operational parameters.
Program Mode also allows for the adjustment of alarm set point levels, the calibration gas level setting,
View Program Status
View Program Status is a listing that allows the operator to view the gas, range, and software version number
of the program, as well as the current alarm settings, calibration gas level setting, offset value, RS-485 ID
number, heater voltage, and estimated remaining sensor life.
The following procedure is used to view the programming status of the sensor:
a) Enter the programming menu by holding the programming magnet stationary over “PGM 2” for 15
seconds. When the display changes to “VIEW PROG STATUS”, withdraw the magnet. Scroll through
the programming menu by momentarily waving the programming magnet over either “PGM 1” or “PGM
2”. The menu options are: View Program Status, Set Alarm 1 Level, Set Alarm 2 Level, and Set Cal
Level.
b) Scroll to the “VIEW PROG STATUS” listing and hold the programming magnet over “PGM 1” for 3
seconds. The display will automatically scroll, at five second intervals, through the following information
before returning back to the “VIEW PROG STATUS” listing.
¾ Gas type and software version number.
¾ Alarm set point level of alarm 1. The menu item appears as: “ALM1 SET @ ##PPM”
¾ Alarm firing direction of alarm 1. The menu item appears as: “ALM1 ASCENDING” or descending.
¾ Alarm relay latch mode of alarm 1. The menu item appears as: “ALM1 NONLATCHING” or latching.
¾ Alarm relay energize state of alarm 1. The menu item appears as: “ALM1 DE-ENERGIZED” or
energized.
¾ Alarm set point level of alarm 2. The menu item appears as: “ALM2 SET @ ##PPM”
¾ Alarm firing direction of alarm 2. The menu item appears as: “ALM2 ASCENDING” or descending.
¾ Alarm relay latch mode of alarm 2. The menu item appears as: “ALM2 LATCHING” or non-latching.
¾ Alarm relay energize state of alarm 2. The menu item appears as: “ALM2 DE-ENERGIZED” or
energized.
¾ Alarm relay latch mode of the fault alarm. The menu item appears as: “FLT NONLATCHING” or
latching.
¾ Alarm relay energize state of the fault alarm. The menu item appears as: “FLT ENERGIZED” or de-
energized.
¾ Calibration gas level setting. The menu item appears as: “CAL LEVEL @ ##PPM”
¾ Identification of the RS-485 ID number setting. The menu item appears as: “485 ID SET @ ##”
¾ Estimated remaining sensor life. The menu item appears as: “SENSOR LIFE 100%”