Dansensor A/S COPYRIGHT © PBI-200114-D 04/2013
ISM-3 EN User Manual 13
Set-up of alarm limits
ISM-3 has two programmable alarm limits, AL.HI (high oxygen alarm) and AL.Lo (low oxygen alarm).
In case of measurements above or below the alarm limits the relay is activated.
In order to change one of the alarm limits, the following procedure must be followed:
1. Press 2 or 3 times depending on whether it is a high alarm or a low alarm which must be changed.
2. The alarm value is displayed. Press and hold the button for 3 seconds in order to change the
alarm.
3. With and it is possible to switch between % and ppm.
After choosing % or ppm press and the first digit will flash.
4. Use and to set the flashing digit.
5. Press in order to set the next digit.
6. When the last digit has been set, press the button to store the value.
The set alarm limit is active immediately.
Output of sensor flow
1. Press and FLO. will appear in the display followed by the actual sensor flow value in ml/min.
2. If you wish a continuous display of the flow, press and hold the button for 3 sec. while the flow is
displayed. After about 3 seconds the display will flash shortly.
3. The gas flow value will be displayed until the button is activated again.
Flow alarm
A flow alarm appears if the flow is below or above the min. and max. values as set in the set-up menu. In
case of a flow alarm, display will change in 2 secs. turns between
FL.ER and O
2
value until the flow error
stops. The relay is activated for min. 4 seconds independently of the duration of the alarm.
The flow alarm has a higher priority than the oxygen alarms. If a flow alarm and an oxygen alarm occurs
at the same time, only the flow alarm appears in the display.
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