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Software flowchart, 2 normal operation, 3 calibration mode – Detcon CXT-DM User Manual

Page 22: Normal operation, Calibration mode, Figure 16 software flow chart

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Model CXT-DM

Software Flowchart

dec

LEGEND:

PGM1 - Program Switch Location #1
PGM2 - Program Switch Location #2

(S) - Momentary Swipe
(M) - Momentary hold of Magnet during text

scroll until the ">" appears, then release

(3) - 3 second hold from ">" prompt
(10) - 10 second hold from ">" prompt

Auto Time-out - 5 seconds

inc - Increase
dec - Decrease

#, ##, ### - numeric values

Serial N. ##.##.##

Temperature ##C

RF Channel ##

AutoZero

PGM1 (3)

PGM2 (10)

PGM2 (3)

RF App ##.##.##

CP App ##.##

RF SW ##.##

Modbus ID ####

inc

Auto Time-Out

View Sensor Status

PGM1/2 (3)

PGM1/2 (M)

MP App ##.##

PGM2 (S)

PGM1/2 (3)

PGM1 (S)

##

AutoTime-out

PGM1/2 (3)

PGM1/2 (M)

Set Detection Range

AutoSpan

Normal Operation

PGM1 (3)

Auto Time-Out

Auto Time-Out

inc

PGM2 (S)

PGM1/2 (3)

PGM1 (S)

##

PGM1/2 (3)

PGM1/2 (M)

dec

PGM1/2 (3)

Bump Test Started

PGM1/2 (3)

PGM1/2 (M)

Bump Test

PGM1/2 (M)

Defaults Restored

PGM1/2 (3)

Restore Defaults

Auto Time-Out

dec

inc

PGM2 (S)

PGM1/2 (3)

PGM1 (S)

##

AutoTime-out

PGM1/2 (3)

PGM1/2 (M)

Set RF Channel

Auto Time-Out

inc

PGM2 (S)

PGM1/2 (3)

PGM1 (S)

##

PGM1/2 (3)

PGM1/2 (M)

Set Modbus ID

dec

Set Autospan Level

Network ID ##

Range ###

Last Cal ## Days

Sensor Life ###%

2 minute timeout

Figure 16 Software flow chart

3.2 Normal Operation


In normal operation, the ITM Display will be blank and will display the gas reading once every 10 seconds for
about 2 seconds (normally appear as “0”). At any time swiping a magnet across either PGM1 or PGM2 will
cause the ITM to display the range and gas type (i.e. “ppm H2S”). If the sensor is actively experiencing any
diagnostic faults, a swipe of the magnet will cause the display to scroll the fault condition. Refer to Section 5
Service and Maintenance
for more information on fault conditions.

3.3 Calibration Mode

CXT-DM Instruction Manual

Rev. 1.6

Page 18 of 52