Figure 5-41. Keyboard Entry For Temperature Values
Temperature Deadband
Deadband is the range through which the sensor reading can vary without
prompting a change in alarm state. Once the sensor reaches a high or low
alarm state, the alarm stays active until the reading reaches a value of either
“high alarm value – deadband value” or “low alarm value + deadband value”.
Temperature deadband is always a positive number. Below are examples of
deadband settings for a temperature transmitter.
High alarm state
- If you set the temperature deadband to 10˚F and the high alarm
value to 250°F, the device will be in a high alarm state (red LED blinks 2 times
every 2 seconds) when the temperature measurement reaches 250°F or above.
The device will stay in the alarm state until the temperature measurement reaches
240°F or below (“high alarm value – deadband value”, which is 250°F - 10°F).
Low alarm state
- If you set the temperature deadband to 10°F and the low alarm
value to 50°F, the device will be in a low alarm state (red LED blinks 2 times
every 2 seconds) when the temperature measurement reaches 50°F or below. The
device will stay in the alarm state until the temperature measurement reaches
60°F or above (“low alarm value + deadband value”, which is 50°F + 10°F).
Figure 5-42. Temperature Deadband Of 1°F
Software Instructions (Android)
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