Device type

Humidity and temperature probe

Range of application

•-50…+100 °C / 0…100 %rH

•-50…+80 °C / 0…100 %rH (HC2A-S3A)

Mechanical configuration

See Dimensions

IP protection

IP65

Power supply / connection

Power supply (VDD)

3.3…5 VDC ±0 %

Current consumption

<4.5 mA

Maximum start-up current unlimited

<50mA during 2μs

Minimum start-up current

8 mA during 2ms and 5 mA during 2s

Maximum current spike during operation (steht so im Manual)

1 mA during maximum 2μs

Polarity protection

Mechanical protection

Humidity measurement

Sensor

ROTRONIC HYGROMER® HT-1

ROTRONIC HYGROMER® HM1-SK (HC2A-S3A)

Measurement range

0…100 %rH

Measurement accuracy

•±0.5 %rH at 10…30 °C / 10..90 %RH (HC2A-S3H)

•±0.8 %rh, ±0.1 K at 10…30 °C

Repeatability

0.3 %rH

Long term stability

<1 %rh / year

Sensor response time

Typically 10 sec, for 63 % of 35 to 80 %rh step change (1 m/s wind speed at sensor)

Temperature measurement

Sensor

Pt100 RTD, IEC 751 1/3 Class B

Measurement range

•-50…+100 °C / 0…100 %rH

•-50…+80 °C / 0…100 %rH (HC2A-S3A)

Measurement accuracy

±0.1 °C at 10…30 °C

Repeatability

0.05 °C

Long term stability

<0.1 °C / year

Sensor response time

Typically 4 sec, for 63 %rH of a step change (1 m/s wind speed at sensor)

Calculated parameters

Psychrometric calculations

Dew or frost point (user configurable)

Start time / measurement interval

Start time

1.5 s (typical)

Measurement interval

1.0 s (typical) – when not calculating any parameter

Digital interface

Type

UART

Factory default

Baud rate 19200, tolerance 2 %

Parity: none

Data bits: 8

Stop bits: 1

Flow control: none

Baud rate configuration

No

Logic levels

Logic 0: ≤0.3 V * VDD

Logic 1: ≥0.8 V * VDD

Maximum cable length

5 m (16.4 ft) w/o signal booster

Conformity

CE / EMC

EMC Directive:

20.04.2016: 2014/30/EU

EN 61000-6-1: 2007, EN 61000-6-2: 2005

EN 61000-6-3: 2007+A1:2011+AC:2012, EN 61000-6-4: 2007+A1:2011

Soldering

Lead free (RoHS Directive 2011/65/EU)

FDA/GAMP directives

Compatible

Accepted environmental conditions

Storage/transportation

•-50…+100 °C / 0…100 %rh, non-condensing

•-50…+80 °C / 0…100 %rh, non-condensing (HC2A-S3A)

Range of application (electronics)

•-50…+100 °C / 0…100 %rh, non-condensing

•-50…+80 °C / 0…100 %rh, non-condensing (HC2A-S3A)

Maximum wind velocity

See filter specification

Critical gases

Please consider the sensor data sheet of the HT-1 sensor.

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

+10 mV (maximum)

Ripple

<1.2 mV/x 2μs

Short circuit tolerant

Yes

Internal resistance

<10 Ω

Minimum external load

1000 Ω

Deviation from digital signal

<±1 mV from 0.002 to 1.0 V / + 2 mV from 0.0 to 0.002 V