SAM 400 SPEED-AREA-DISTANCE METER
14
Set Forward Speed Alarm Thresholds
1. Press and hold the button while switching the instrument on.
2. The channel (1) displays the Maximum speed alarm threshold (Output
2). The default is 50 (km/hr).
3. Pressing the centre key selects the channel (2). This displays the
High speed alarm threshold (Output 1). The default is 19 (km/hr).
4. Use the small left and right buttons to adjust the setting.
Select Engine / Ignition Hours
When “IGN” is programmed, the instrument will accumulate hours whenever
the instrument is powered on.
You can select “ENG” hours if the RPM channel is measuring engine speed
(e.g. using the Alternator RPM Sensor kit). Hours will then only accumulate
when the engine is running.
1. Press and hold the CAL button while switching the instrument on.
2. Select the channel.
3. Press either outermost button to select 'iGn' or 'EnG'.
4. Switch the instrument off and then on again to resume the normal operating
mode.
RPM Sensor Factor
The RPM Sensor Factor is equal to the number of pulses received by the
instrument per revolution of the sensed shaft, e.g. for measuring Engine RPM,
PTO Speed, Shaft Speed, Fan Speed etc depending on the particular
installation. The default setting is 1 pulse per rev (p.p.r), which is OK in the
case of a magnetic sensor with a single magnet on the sensed shaft.
In other cases, perform the following calibration procedure.
1. Run the sensed component at a known speed. If necessary measure this
speed using a hand-held tachometer.
2. At the same time have someone note the RPM displayed on the instrument.
3. Calculate the new calibration factor,
= Initial Factor x Displayed Speed
Actual Speed
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