User Manual
16
5. TECHNICAL CHARACTERISTICS
5.1. REFERENCE CONDITIONS
Quantity of inuence Reference values
Temperature 23 ± 2°C
Relative humidity 45% to 75%
Supply voltage 3 to 4.5V
Electric eld < 1V/m
Magnetic eld < 40A/m
The intrinsic uncertainty is the error specied for the reference conditions.
5.2. ELECTRICAL CHARACTERISTICS
5.2.1. TEMPERATURE MEASUREMENTS
Specied measurement range - 10 to + 60°C 14 to + 140°F
Resolution Display in °C: 0.1°C Display in °F: 0.1°F
Intrinsic uncertainty
from 10 to 40°C: ± (0.5°C ± 1 pt)
outside of this range: ± (0.032 x (T-25) ± 1 pt)
T = temperature in °C
5.2.2. HUMIDITY MEASUREMENTS
Specied measurement range 3 to 98% RH
Resolution 0.1 %HR
Intrinsic uncertainty
from 10 to 90% RH: ± (2% RH ± 1 pt)
outside of this range: ± (4% RH ± 1 pt)
Hysteresis
± 1% RH
If the humidity sensor is exposed for an extended period to a relative humidity below
10% RH or above 80% RH, subsequent measurements will be offset.
The longer the exposure, the larger the offset.
This offset can reach 3% RH if the sensor remains for 60 hours at 90% RH. The offset
will disappear after 5 days at ambient temperature (20 to 30°C and 40 to 60% RH).
Long-term drift
<0.5% RH per year
A sensor exposed to a high temperature (for example in a car in direct sunlight) will also be exposed to a very low relative
humidity. In consequence, several days of recovery at ambient temperature will be necessary.
5.2.3. DEW POINT MEASUREMENTS
Specied measurement range - 10 to + 60°C 14 to + 140°F
Resolution Display in °C: 0.1°C Display in °F: 0.1°F
Intrinsic uncertainty
from 20 to 30%RH: ± 1,5°C
>30%RH: ± 1°C