Madman EMS-3 Operating Manual Page 5
3.5 Temperature Display
The EMS-3 uses standard automotive temperature senders to display the temperature. The EMS-3 also contains fail safe
temperature inputs to alert the user when the sender has been disconnected or faulty. The EMS-3 supports 120 and 150
VDO senders, a precision temperature sender, Echlin TS920SA or a custom user definable temperature sender curve.
3.6 Coolant Level Detector
The coolant level detector is an engine coolant level early warning system. It uses an AC signal probe excitation to
accurately determine the absence/presence of coolant level. The coolant level detector can use inexpensive probes such
as stainless steel screws to determine the coolant level. It also features a fail safe input circuit. The coolant level detector
can also be used with float level type sensors (These senders must be of a normally open type). The coolant level switch
must connect to the vehicles negative supply terminal when the coolant level is at an acceptable level.
The coolant level detector has a programmable switch time. This means that the level alarm from the coolant level switch
must be activated for at least the programmed time before an alarm is activated. This prevents false alarm messages
when driving over rough terrain etc. The EMS-3 also has a programmable coolant level threshold which allows the user to
fine tune the trigger point.
This message is displayed when there is a coolant level problem.
3.7 Service Timer Expired Message
This timer is set in engine hours and it will count down to zero. The purpose of this function is to assist you in determining
remaining hours until maintenance will be required.
A maximum of 9999 hours can be entered as a service interval. An alarm message will
be displayed and the appropriate alarm output will be activated (if enabled).
3.8 Hour meter
The hour meter is a useful instrument to display actual engine running time for routine maintenance. The hour meter is
displayed as hours and fractional minutes in 1/10 of an hour resolution (increments every 6 minutes). The hour meter can
be reset to zero in the “TIMERS SETUP” menu. The hour meter updates its internal minute counter every minute. If the
unit is turned on and off for a period of less then a minute, then the hour meter will not increment its internal registers.
The hour meter can be triggered by an ignition on signal or by a rise in battery voltage which signals that the engine is in
fact running.
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