Edgetech PPM1, Operator'S Manual, Page: 18 / 29

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As you cycle through, you will be given the opportunity to replace DP°C with
DP°F, as shown here. At this time you can also change the measurement range
if you wish to. We will leave the default °F range of 50.0 to 0.0.
Next, we will program the alarm relay to open when the measurement is above
25 degrees, and close when the measurement is below 24 degrees.
NOTE: IT IS NOT GOOD PRACTICE TO SET THE “OPEN” POINT AND THE
“CLOSE” POINT TO THE SAME NUMBER. THIS MAY CAUSE EXCESSIVE
RELAY CHATTERING WHEN THE MEASUREMENT IS AT THAT QUANTITY.