Datasheet

ASAIR
®
2
/
8
extended
1
6
7
5.5
2
1200
600
100
5.1
1
Temperature
Table 2. Electric Specification
2 This precision is the test precision of the sensor with 5V voltage at 25℃ excluding
hysteresis and nonlinearity,and only suitable for non-condensation conditions.
3 The time required to reach 63% of the first-order response under the conditions of 25℃
and 1 m/s air flow.
1 Normal working scope:0 - 80% RH.Sensor reading will be deviated if beyond this range,
(drift < 3% RH after 200 hours at 90% RH humidity).The working scope is further limited
to - 40– 80℃.
4 If the sensor is surrounded by volatile solvents,irritating tapes,adhesives and
packaging materials,the reading may be higher.For more information,please
refer to the relevant documents.
5 The minimum and maximum of power consumption are based on the conditions of
VDD = 5 V and T < 60 ℃ .The average value is value measured every two seconds.
8 The response time depends on the thermal conductivity of the sensor substrate.
Hysteresis
Parameter
Measuring range
2
Accuracy
Repeatability
Interchangeability
3
Response time
4
Drift
Condition
Min
Typical
Max
Unit
See
Figure 2
completely interchangeable
completely interchangeable
Table 1 Humidity Characteristic
Sensor performance
Relative humidity
Table 3 Temperature Characteristic
Resolution ratio
Resolution
ratio
Parameter
Condition
Min
Typical
Max
Unit
Accuracy
Measuring range
Repeatability
Interchangeability
8
Response time
Drift
See
Figure 3
0 10 20 30 40 50 60 70 80 90 100
±0
±2
±4
±6
±8
±10
Figure 2 The maximum error of relative humidity at 25°C
△ RH(%RH)
Max Value
Typical Value
Relative Humidity(% RH)
-40 -20 0 20 40 60 80
±0.0
±0.5
±1.0
±1.5
±2.0
Figure 3 Typical error and maximum error of temperature
Temperature(℃)
△ T℃
Typical Value
Max Value
Parameter
Condition
Min
Typical
Max
Unit
Electric specification
Supply Voltage
Power
5
consumption
Low level output voltage
High level output voltage
Low level input voltage
High level input voltage
Output current
Sampling period
Sleep
measuring
Average
Decline
Rise
Open
Tri-state
(turn off)
6 Low level output current
7 Represents pull up resistance.
AM2311A Technical Manual
www.aosong.com Guangzhou Aosong Electronics Co.,Ltd. Tel: [phone] Versior:V1. 0