18] Alter Gas Type and Range
The gas type, default range, number of decimal places and deadband can be selected using this
menu. Use UP (1) and DOWN (5) to choose the channel, and + (4) and – (2) to change the gas
type. Press RESET (7) to change range using + (4) and – (2). Press RESET (7) to toggle
between 1 and 2 decimal places. Press DIM (6) to toggle the deadband on and off.
Press SELECT (3) to exit this menu.
19] View Addressable Sensor Data
This menu allows the veiwing of data received from an indivdual CAN sensor for upto 24
hours.Use the UP (1) and DOWN (5) buttons to choose the sensor channel to be displayed.The
data displayed is as follows:
Addr 00 Timeout in 00sec Lowest=00
ST1 00 ST2 00 Rstat 00
Pressing SELECT (3) again exits this menu.
20] Adjust 4~20mA Zero and Span
Normally a gas sensor will be calibrated as a separate item but minor adjustments to the
readingsof any of the 4~20 sensors can be made at the panel using this menu Use UP (1) and
DOWN (5) initially to choose the gas sensor to be calibrated.Then press SELECT (3) and use UP
(1) and DOWN (5) to alter the maximum value of the sensorif required. Then press SELECT (3)
to start adjusting the zero for this sensor (with no gas present). UP (1) and DOWN (5) make
minor adjustments and when reading of zero is achieved press SELECT (3) to move to a span
adjustment (apply span gas). UP (1) and DOWN (5) will adjust the internal gain to make the
reading correct according to the span gas applied.
Press SELECT (3) to exit this menu.
21] Set 4-20 direct Alarm Levels
Alarms occur when the gas values for each sensor are above or below these alarm levels
(Oxygen can be below) and the level can be adjusted using this menu.
Use + (4) and
– (2) to select the sensor channel to be adjusted. Pressing RESET (7) will
toggle between rising and falling alarms.
Adjustment of the LOW alarm is done using the UP (1) and DOWN (5) buttons
Pressing SELECT (3) again allows adjustment of the HIGH alarm using the same buttons
Pressing SELECT (3) again allows adjustment of the OVER RANGE alarm using the same
buttons
Pressing SELECT (3) again will exit the menu.
22] Unlatched Alarms
Each sensor channel can have latched or unlatched alarms. This menu shows the current state of
this feature and can be toggled by pressing + (4) or – (2). The sensor channel is selected by
using the UP (1) and DOWN (5) buttons. Unlatching alarms will clear automatically when the gas
level is below the alarm point. Pressing SELECT (3) will exit this menu.
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