Humidity Sensor

1. Part name: RHK1AN
2. Type: Polymer relative humidity sensor
3. Scope of application: These specifications are spplicable to the humidity sensor RHK1AN

4. Configuration:

• The configuration of case is shown on the attached Fig –1
• The configuration of the humidity sensor unit shown on the attached Fig-2

5. Electrical characteristics

5-1 Operating temperature range.....................	0℃ ~ 60℃
5-2 Operating humidity range.....................	20 ~ 90%RH
5-3 Storage temperature range.....................	-20℃ ~ 70℃
5-4 Storage humidity range.....................	Less than 95% RH
5-5.Rated voltage.....................	AC 1Vrms ( 1KHz )
5-6. Rated power.....................	0.3mW
5-7.Standard characteristic  Fig-3..................	65KΩ(at25℃, 60% RH)
5-8.Response time   Fig-4.....................	< 30Sec
5-8 Accuracy.....................	< ± 5% RH
5-9.Hysteresis.....................	Within 3% RH
5-10.Temperture characteristic Fig-5

6.Mechanical Characteristics

	6-1. Soldering heat resistance The Humidity Sensor should be kept its original appearance and electrical Characteristics after soldered for 3 seconds at 270 ± 5℃ temperature condition.
	6-2. Termination strength The lead terminal should be safe after pulled with it by 500g force for 10 seconds.
	6-3. Shock resistance The Humidity Sensor should be kept its original appearance and electrical characteristic after falling down 5 times on the hard place from 70cm height.
	6-4. Vibration resistance The Humidity Sensor should be kept its original appearance and electrical 10-55Hz characteristic after testing the vibration for 2 hours in each direction (X.Y.Z) frequency in the box (10 × 60 × 10)

7. Reliability

	7-1. Humidity resistance Put it for 1000 hours at 40℃ and 90% RH, put it more for 1 hour in usual humidity and temperature conditions. After that, the value is changed within ±3% RH from the initial value .
	7-2. Humidity cycle One cycle should be to put for 30 minutes at 25℃and 30% RH continue to put it for 30 minutes while raising to 90% RH, put it for 30 minutes at 90% RH and put it more for 30minutes while lowering to 30% RH. Repeat 500 these cycles, usual humidity and temperature conditions. After that, the value is changed within ±5% RH from the initial value.
	7-3. Temperature cycle One cycle should be to put for 30 minutes at -30℃ continue to put it for 30 minutes while raising the temperature to 85℃, put it for 30 minutes at 85℃ and put it more for 30 minutes while lowering the temperature to - 30℃. Repeat these cycles 100 times, then put it for 1 hour in usual condition. After that, the value is not changed out of ±5% RH from the initial value.
	7-4. Heat resistance Put it for 1000 hours at 80℃ and 30% RH, and put it more for 1 hour in usual humidity and temperature conditions. After that, the value is not changed out of ± 5% RH from the initial value.
	7-5. Cool resistance Put it for 1000 hours at -30℃, put it more for 1 hour in usual humidity and temperature conditions. After that, the value is not changed out of ± 5% RH from the initial value.

8. Caution in using the Humidity Sensor

	8-1 Please beware of using the following gas. * Solvent, Organic gas, Alcohol, Glycol. * NOx, ammonia inorganic gas, sox. * Anionic ionizer, salty air.
	8-2 Do not use it in too much wet or condensed condition.
	8-3 Do not use DC to the Humidity Sensor.
	8-4 Use in good air condition.