Detcon 700 - Set-up and Normal Operation

700 RAM I.M.
700 RAM I.M. Rev. 1.1 Page 7 of 12
dec
dec
Yes
/No
Set Energized
PGM1/2 (S)
PGM1/2 (3)
Yes
/No
Yes
/No
inc
Set Ascending
PGM1/2 (3)
PGM1/2 (S)
Set Latching
PGM1/2 (3)
PGM1/2 (S)
Set Level - XX
Set Alarm 2
Auto Time-Out
PGM2 (S)
PGM1/2 (3)
PGM1 (S)
PGM1/2 (M)
PGM1/2 (3)
Calibration Mode
(Auto Span)
View Sensor Status
Auto Time-Out
PGM1/2 (M)
PGM1/2 (3)
inc
PGM1 (S)
PGM1/2 (3)
Set AutoSpan Level
PGM1/2 (M)
PGM1/2 (3)
PGM2 (S)
XX
AutoTime-out
PGM2 (3)
PGM1 (3)
Normal Operation
PGM2 (3)
PGM1 (3)
Calibration Mode
(Auto Zero)
PGM1 - Program Switch Location X1
PGM2 - Program Switch Location X2
Signal Output Check
Auto Time-Out
(S) - Momentary Swipe
(M) - Momentary hold of Magnet during text
scroll until arrow prompt appears, then
release
(3) - 3 second hold from arrow prompt
(10) - 10 second hold from arrow prompt
Auto Time-out - 5 seconds
inc - Increase
dec - Decrease
X, XX, XXX - numeric values
Set Energized
Auto Time-Out
Yes
/No
PGM1/2 (3)
Yes
/No
PGM1/2 (3)
PGM1/2 (S)
PGM1/2 (M)
Set Latching
PGM1/2 (S)
PGM1/2 (3)
Set Fault
LEGEND:
Simulation
PGM1/2 (3)
PGM1/2 (M)
PGM2 (10)
Set Energized
Set Latching
Set Ascending
Auto Time-Out
Set Level - XX
Auto Time-Out
PGM1 (S)
PGM1/2 (3)
inc
PGM1/2 (3)
PGM2 (S)
XX
Set Serial ID
PGM1/2 (M)
dec
Yes
/No
Yes
/No
Yes
/No
inc
PGM1/2 (3)
PGM1/2 (3)
PGM1/2 (S)
PGM1/2 (3)
PGM1/2 (3)
PGM1/2 (S)
PGM1/2 (S)
PGM1/2 (3)
PGM2 (S)
PGM1 (S)
dec
Set Alarm 1
PGM1/2 (M)
Voltage X.XXVDC
Temp XXC
mA Output XX.XX
Sensor Diags
Serial ID XX
Sensor Life XX%
Last Cal XX Days
Range XXX
Auto Span XX
Version X.XX
Model Type
Alarm 2 Settings
Alarm 1 Settings
Fault Settings
Figure 9 RAM Software Flowchart
3. Set-up and Normal Operation
In normal operation, the RAM display continuously shows the current sensor reading, which will typically
appear as “ 0 ”. Once every 1 minute the LED display will flash the sensor’s measurement units and gas type
(i.e. % LEL). If the 700 Gas Sensor or RAM is actively experiencing any diagnostic faults, a “Fault
Detected” message will flash on the display once every minute. When the unit is in “Fault Detected” mode
with the red Fault LED on, PGM1 or PGM2 can be swiped to invoke a display of the active faults.
In normal operation, the 4-20mA current output from the RAM corresponds with the present gas
concentration and full-scale range. The RS-485 Modbus™ serial output provides the current gas reading and
fault status on a continuous basis when polled.