ROTRONIC HC2 - Manual (Page 28)

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 28 of 31
Document title
© 2009-2013; Rotronic AG E-M-HC2 Probes-V1_26
Conformity to standards
CE / EMC immunity
EMC Directive 2004/108/EG: EN 61000-6-1: 2001, EN 61000-6-2: 2005
EN 61000-6-3: 2005, EN 61000-6-4: 2001 + A11
Solder type Lead free (RoHS directive)
FDA / GAMP directives compatible
Environmental limits
Storage and transit -50…+100 °C / 0…100 %RH, non condensing
Operating limits at electronics
-40 … +100 °C
0…100 %RH, non condensing
Temperature limits at sensor See Models
Maximum humidity at sensor
100 %RH up to 80 °C (176 °F)
75 %RH at 100 °C (212 °F)
45 %RH at 125 °C (260 °F)
15 %RH at 150 °C (302 °F)
Maximum air velocity at probe 20 m/s (3,935 ft /min)
Critical environments Humidity sensor: as per DV04-14.0803.02 - Critical chemicals
10.2 Dew point accuracy
The HC2 probes can be configured to calculate either the dew point or frost point based on the measurement
of relative humidity and temperature. The accuracy of this conversion varies, depending on the humidity and
temperature conditions as shown in the graph below:
Example: at a temperature of 20 ˚C, a dew point value of -37 ˚C is measured with an accuracy of
± 1.0 ˚C or better.