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1.Applications

This specifications is applied to relative humidity sensor Type SJL31S.

Guaranteed impedance: 31kΩ at 25℃,60%RH

2.Ratings & electronic characteristics

Supply voltage: Less than AC5.0V AC1.0V is recommended.

Test wave shape: Sine or square wave shape.

With frequency 500~2,000Hz

1kHz is recommended.

Power consumption: Less than 2mW

Humidity range: 20－95%RH(in operation) 10－95%RH(in storage)

Temperature range: 0－50℃(in operation) -20－70℃(in storage)

Hysteresis: <2%RH

Response time

moisture absorption time: <15S

moisture doffing time: <20S

Stability: <2%RH Per year

Interchangable characteristics: (-3%RH~3%RH)

Water tolerent: <3%RH accuracy variation when dipping into water for 30minute, widely used in dewing occasions.

Typical humidity sensor Characteristics: See following table 1

3.Outline Dimensions (Unit:mm)

4.Typical humidity sensor Characteristics(table 1)

	0℃	5℃	10℃	15℃	20℃	25℃	30℃	35℃	40℃	45℃	50℃
20%RH				10M	6700	4680	3900	3000	2400	1750	1450
25%RH		10M	7000	5000	3400	2420	1900	1500	1100	880	700
30%RH	6400	4600	3249	2350	1800	1260	1250	850	650	560	420
35%RH	2900	2100	1428	1099	851	640	520	430	330	260	190
40%RH	1450	1070	676	520	403	298	268	237	185	130	110
45%RH	700	500	343	264	204	152	145	120	88	70	56
50%RH	370	260	182	140	107	81	76	63	51	41	33
55%RH	190	140	106	82	63	49	44	36	30	24	19
60%RH	108	84	66	50	39	31	27.5	23	18.5	15.2	12.4
65%RH	62	49	41	31.5	24.4	20	16	13.6	11.7	9.5	7.8
70%RH	38	33	26	20	15.5	14.2	11	9.2	7.4	6.1	4.9
75%RH	23	18	15.5	12.5	10.4	8.5	7.4	6.1	5.2	4.1	3.3
80%RH	16	12.3	10	8.2	7.2	5.9	5.1	4.3	3.5	2.8	2.6
85%RH	10.8	8.5	7.0	6.2	4.8	3.9	3.5	2.8	2.3	1.9	1.6
90%RH	7.5	5.2	4.8	4.3	3.4	2.8	2.4	1.9	1.6	1.4	1.2
95%RH	5.2	3.6	3.4	3.0	2.4	2	1.8	1.5	1.2	1.0	0.9

5.Packing

(1) 100PCS of sensor are placed in a tray

(2) 20sheets to be packed in a small carton box(SIZE:L190*W150*H55mm)(2,000PCS of sensor in a unit box)

(3) 16 small boxes to be packed in larager box(SIZE:L340*W390*H240mm)(32,000PCS of sensor in a lager box)

6.Mechanical durability

Drop test (Dropped onto wooden plate from a height of 1m, 3 times)	Passed
Vibration test (Amplitude of 5mm, X, Y, Z directions, 10Hz for 20 min.)	Passed
Tensile strength of lead wire (Pulled with 1kg load for 10 sec.)	Passed
Lead wire bending test (lead wire was bended to 90 degrees with 250g load, and bended again to opposite direction.)	Passed

7.Reliability 1 (Temperature and humidity test)

Sensors were tested/stored in the conditions described below respectively, and the humidity characteristics at 25℃,60%RH before test and after test were inspected, and described in the following.

Test conditions		Variation
1	Sensors are stored in high temperature(80℃) for 1,000 hrs.	＜±5%RH
2	Sensors are stored in low temperature(-20℃) for 1,000 hrs.	＜±5%RH
3	Sensors are stored in high temperature and high humidity (50℃,90%RH) for 1,000 hrs.	＜±5%RH
4	Sensors are stored in low humidity (25℃, less than 15%RH) for 1,000 hrs.	＜±5%RH
5	Sensors are energized in high temperature(80℃) for 1,000 hrs. Supply voltage is AC1.0V, 1kHz.	＜±5%RH
6	Sensors are energized in high temperature and high humidity (50℃,90%RH) for 1,000 hrs. Supply voltage is AC1.0V, 1kHz.	＜±5%RH
7	200 cycles of dewing condition for 10 minutes – drying condition for 10 minutes.	＜±5%RH

8.Reliability 2 (Organic solvent vapor, corrosive gases test)

Test conditions	Variation
1 Methanol (1000ppm, 100 hrs.)	＜±5%RH
2 Ethanol (1000ppm, 100 hrs.)	＜±5%RH
3 Ammonia (1000ppm, 100 hrs.)	＜±5%RH
4 Acetic acid (1000ppm, 100 hrs.)	＜±5%RH
5 Mixed solvents (Benzene 3 : Toluene 3:	Xylene 4, 1000ppm, 100 hrs.) ＜±5%RH
6 H2S (200ppm, 20 hrs.)
7 Acetone (1000ppm, 100 hrs.)	＜±5%RH
8 SO2 (200ppm, 20 hrs.)	＜±5%RH