ADEUNIS TEMP V4 IP68 LoRaWAN 863-870 Guide Utilisateur page 53

TEMP V4 IP68 LoRaWAN 863-870 - Guide utilisateur / User guide version V3.1.1
The product will send the frame when a threshold is overpassed but also when temperature comes back to normal (cf status alarm).
Explication of the thresholds and their hysteresis:
High alarm enabling
The settings associated with this mode of operation are:
• Sampling period (register 321).
• The activation of the probes (register 324).
• Alarm configuration of the probe 1 (register 330) and probe 2 (register 340).
• High threshold of the probe 1 (register 331) and probe 2 (register 341).
• Hysteresis for the high threshold of the probe 1 (register 332) and probe 2 (register 342).
• Low threshold of the probe 1 (register 333) and probe 2 (register 343).
• Hysteresis for the low threshold of the probe 1 (register 334) and probe 2 (register 344).
Example :
Register Encoding Value
S301 Decimal 0
S321 Decimal 1800
S324 Decimal 3
S330 Decimal 3
S331 Decimal 700
S332 Decimal 50
S333 Decimal 100
S334 Decimal 20
S340 Decimal 2
S341 Decimal 235
S342 Decimal 35
S343 Decimal 0
S344 Decimal 0
In this example:
• The product measure the temperature on the 2 probes every hour
• On probe 1, there is a high alert at 70°C with a come back to normal at 65°C and a low alert at 10°C with a come back to normal at 12°C
• On probe 2, there is only a high alert at 23.5°C with a come back to normal at 20°C.
High alarm disabling
Result
Alarm mode
A sample of the temperature every hour
The 2 probes are activated
An alarm is activated on high and low threshold on the probe 1
High threshold is 70°C
Hysteresis of the high threshold is 5°C, so the come back to normal is at 65°C
Low threshold is 10°C
Hysteresis of the low threshold is 2°C, so the come back to normal is at 12°C
An alarm is activated on high threshold only on probe 2
High threshold is 23.5°C
Hysteresis of the high threshold is 3.5°C, so the come back to normal is at 20°C
No low threshold determined
No low threshold determined
High threshold
High threshold - high threshold hysteresis
Low threshold + low threshold hysteresis
Low threshold
Low alarm enabling Low alarm disabling
Sensor value
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