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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