Detcon 1000 - Manual (Page 16)

Mdl 1000 H2S E-Chem / Inst. Air
Model 1000 H2S E-Chem w Instrument Air Rev. 1.1 Page 12 of 28
5. Operating Software
5.1 Programming Magnet Operating Instructions
Operator interface to MicroSafe™ gas detection products is via magnetic switches located behind the
transmitter faceplate. DO NOT remove the glass lens cover to calibrate or change programming parameters.
Two switches labeled “PGM 1” and “PGM 2” allow for complete calibration and alarm level programming
without removing the enclosure cover, thereby eliminating the need for area de-classification or the use of hot
permits.
Figure 12 Programming Magnet
A magnetic programming tool (Figure 12) is used to operate the switches. Switch action is defined as
momentary contact, 3-second hold, and 30-second hold. In momentary contact use, the programming magnet
is waved over a switch location. In 3-second hold, the programming magnet is held in place over a switch
location for 3 or more seconds. In 30-second hold, the programming magnet is held in place over a switch
location for 30 or more seconds. Three and 30-second hold is used to enter or exit calibration and program
menus while momentary contact is used to make adjustments. The location of “PGM 1” and “PGM 2” are
shown in section 1.3.
NOTE: If, after entering the calibration or program menus, there is no interaction with the
menu items for more than 30 seconds, the sensor will return to its normal operating condition.
5.2 Operating Software
Operating software is menu listed with operator interface via the two magnetic program switches located under
the faceplate. The two switches are referred to as “PGM 1” and “PGM 2”. The menu list consists of 3 items
which include submenus as indicated below.
01. Normal Operation
a) Current Status
02. Calibration Mode
a)
Zero
b) Span
03. Program Menu
a) Program Status
b) Alarm 1 Level
c) Alarm 2 Level
d) Calibration Level
5.2.1 Normal Operation
In normal operation, the display tracks the status of the sensor and gas concentration and appears as: “##.##
PPM H2S”. The milliamp current output corresponds to the monitoring level and range of the sensor, where
Full Scale is 20mA.