User guide

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
27 of 31
Document title
© 2009-2013; Rotronic AG E-M-HC2 Probes-V1_26
Configurable analog outputs
Output 1 Can be made to correspond to any parameter
Factory default parameter Relative humidity
Factory default scale 0…100 %RH
Output 2 Can be made to correspond to any parameter
Factory default parameter Temperature
Factory default scale -40…60 °C
Output 1 and Output 2
Signal type 0…1 V
User configurable scaling limits -999.99 … 9999.99 engineering units
Offset at 0 V + 3 mV (maximum)
Ripple < 1.2 mV/x 2µs
Short circuit tolerant Yes
Internal resistance < 10 
Minimum external load 1000 
Deviation from digital signal < ±1 mV from 0.002 to 1.0 V / + 2 mV from 0.0 to 0.002 V
Digital interface
Interface type UART (Universal Asynchronous Receiver Transmitter)
Organization Dialog, duplex
Default configuration
Baud rate : 19200
Parity : none
Data bits : 8
Stop bits : 1
Flow Control : none
Tolerance 3 %
Baud rate configuration: No
Logical levels
Logical 0: < = 0.3V * VDD
Logical 1: > = 0.8V * VDD
Maximum cable length 5 m (16.4 ft) w/o signal booster
Effect of VDD in the range 3.3 to 5.0 V (see note below)
Temperature (digital) <0.05 °C
Humidity (digital) <0.25 %RH
Analog signals <2mV (reference: digital value)
Note: for models HC2-IC, HC2-IM and HC2-IE, VDD is limited to 3.3 V ± 0.1V
General specifications
Housing material See Models
Collar material (connector) Alu-Anticorodal (anodized)
Dust filter material See Models
Protection grade IP 65
Physical dimensions See Models
Weight See Models