461960 Datasheet, PDF (8/10 Pages) Extech Instruments Corporation. – RPM Controller / Monitor

Alarm Hysteresis value setting
1. After selecting the "Control Hysteresis value" , press the "Set” button twice, the
display will show " ALHy ", the meter is now ready for the "Alarm Hysteresis” value
setting.
2. Use the "▼” button and the "▲” button to adjust the desired Alarm Hysteresis
value.
Note: When adjusting the value, the "SV” indicator will light.
Example :
High limit value : 100, Low limit value : 20, Alarm Hysteresis value : 5
1. The alarm relay will be On when measuring value up to 100. The alarm relay will
turn Off again when measuring value down to 95.
2. The alarm relay will be On when measuring value down to 20. The alarm relay will
turn Off when measuring value up to 25.
SYSTEM RESET
Power on the meter. Use two fingers to press the "Set” button and "Function” button
continuously for more than 5 seconds until the display show the text "rSt". Release the
buttons. "rSt" will flash 2 times and the display will then to the normal screen. The meter
system will be reset, all the calibration data will be cleared and the meter's internal
functions will return to the default values.
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461960 V1.1 8/07