ROTRONIC HC2 - Manual (Page 29)

E-M-HC2 Probes-V1_26
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page 29 of 31
Document title
© 2009-2013; Rotronic AG E-M-HC2 Probes-V1_26
10.3 Effect of cable temperature on the accuracy of probes HC2-C04 and
HC2-C05
Accuracy of the HC2-C04 and HC2-C05 probes is affected by the temperature of the cable separating the
sensors from the electronics.
Error on humidity:
Humidity measurement accuracy is specified at ±1.0 %RH when both the humidity sensor and the cable are at
23 °C. Depending both on the value of temperature and on the exposed length of cable, the probe exhibits a
predictable error (bias) as illustrated below:
Error on temperature:
Temperature measurement accuracy is specified at ±0.3 °C when both the temperature sensor and the cable
are at 23 °C. When the full length of the 2 meter probe cable is exposed to temperature values within the
range of -40 to 85 °C, the additional error is limited to 0.125 °C.
11 Accessories and parts
For accessories and parts such as the HW4 configuration software, extension cables, adapter cables,
calibration accessories and spare dust filters, please see document E-M-HC2-accessories
12 Supporting documents
Document File Name Contents
E-M-HC2-accessories Accessories and parts for probes, indicators and transmitters
Systematic error as a function of the length of cable
exposed to temperature
-10
-8
-6
-4
-2
0
2
4
6
8
10
0 20 40 60 80 100 120 140 160 180 200
Cable Length [cm]
E
rro
r [%
R
H
]
-40 °C
-20 °C
0 °C
23 °C
40 °C
60 °C
85 °C