Alpha Moisture Systems dewSMART DT20 Instruction Manual - Page 7
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Page 7
COMMISSIONING
Switch the instrument power ON. The display will read -105°C (or -142, for -110/+20
range). This is the 'Sensor Disconnected' display condition.
SETTING THE ALARM TRIP POINTS
The alarm trip points are factory set to full scale (+20°C DP) for instrument test purposes
only.
To adjust the alarm set points, use the following procedure:-
1.
Press the left hand side button on the front panel keypad.
The display will indicate SEt 1
2.
Press the middle button and the display will indicate the full scale value of the
sensor range, with the first digit flashing.
NOTES
a)
b)
c)
The flashing digit of the display is the one which can be adjusted.
Pressing the middle button moves the flashing digit along the display
Pressing the right hand side button adjusts the digit value.
3.
Adjust the display until the required trip point for Alarm 1 is indicated.
4.
Press both the middle and right hand side buttons together. This sets the trip point
for Alarm 1 into the instrument memory.
The display will indicate SEt 2
5.
Press the middle button and the display will indicate the full scale value of the
sensor range, with the first digit flashing.
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6.
Adjust the display, as with Alarm 1, until the required trip point for alarm 2 is
indicated.
7.
Press the middle and right hand side buttons together. This sets the trip point for
Alarm 2 into the instrument memory.
The display will now read SEt 1
8.
Press the left hand side and middle buttons together.
The display will revert to the 'Sensor Disconnected' display condition.
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