17]
Alter Channel Text
Each sensor has text associated with it to describe its location.
This text can be altered manually if required using this menu.
Use UP and DOWN to choose the line to be edited and then press ENTER to go into edit mode.
A small cursor will appear below the text indicating that the character above it can be altered. Use
ENTER and SCROLL to change the character and use UP and DOWN to move the cursor to another
character position.
SELECT will complete the editing and return to choose another line.
SELECT again at this point will exit the menu.
Note using PC to PANEL allows this text to be loaded from a PC which is much quicker.
18]
Alter Gas Type
Up to four gasses can be measured and the gas type can be selected using this menu.
Use UP and DOWN to choose which of the four gasses to change and then use ENTER and
SCROLL to change the gas type. The default alarm levels are displayed which will be used if the gas
is changed to a new type.
Note that most alarms are rising but in the case of oxygen, three alarm options are possible indicated
by the v and ^ characters.
19]
Assign 4-20 Outputs
Any of the sensors whether direct or addressable can be assigned to one of two 4-20 output
channels. This menu allows you to choose which sensor is assigned to the first output and then the
second output. Use the UP and DOWN buttons to choose the sensor channel and + and – select
whether it is addressable or direct.
Pressing SELECT moves to the second channel.
Pressing SELECT again exits this menu.
Note that it is possible to assign the same sensor channel to both 4-20 outputs.
20]
Adjust Zero and Span
Normally a gas sensor will be calibrated as a separate item but minor adjustments to the readings of
any of the four gasses can be made at the panel using this menu
Use UP and DOWN initially to choose the gas sensor to be calibrated.
Then press SELECT and use UP and DOWN to alter the maximum value of the sensor if required.
Then press SELECT to start adjusting the zero for this sensor (with no gas present).
UP and DOWN make minor adjustments and when reading of zero is achieved press SELECT to
move to a span adjustment (apply span gas). UP and DOWN will adjust the internal gain to make the
reading correct according to the span gas applied.
Press SELECT 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.
Additionally, the low and high alarms can be latched or unlatched and on entering this menu, you
have to select whether low alarms are latched. Pressing ENTER will toggle between latched and
unlatched.
Pressing SELECT requests the same choice for the high alarm.
Pressing SELECT again allows adjustment of the low alarm using the UP and DOWN buttons
Pressing SELECT again allows adjustment of the high alarm using the UP and DOWN buttons
Pressing SELECT again allows adjustment of the over range alarm using the UP and DOWN buttons
Pressing SELECT 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 pr or –. The sensor channel is selected by using the UP
and DOWN buttons. Unlatching alarms will clear automatically when the gas level is below the alarm
point. Pressing SELECT will exit this menu.
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