HF73

General

Device type

Humidity temperature transmitter with analog output signals

Circuit type

3-wire

Mechanical configuration types

Q

Power supply and connections

Supply voltage (VDD)

15…40 VDC or 12…28 VAC

Nominal current consumption

< 50 mA

Electrical connections

Terminal block and M16 cable grip

Polarity protection

Protective diode on V+

Humidity measurement

Sensor

ROTRONIC Hygromer ® HT-1

Measuring range

0…100 %RH

Measurement accuracy at 23 °C

±1.0 %RH

Repeatability

0.3 %RH

Long term stability

< 1 %RH / year

Sensor time constant

Typical 10 sec, 63% of a 35 to 80 %RH step change (1m/sec air flow at sensor)

Temperature measurement

Sensor

Pt100 RTD, IEC 751 1/3 class B

Measuring range

-100…150 °C / -148…302 °F

Measurement accuracy at 23 °C

±0.2 °C

Repeatability

0.05°C

Long term stability

< 0.1°C / year

Sensor time constant

Typical 4 sec, 63% of a step change (1m/sec air flow at sensor)

Calculated parameters

Psychrometric calculations

Dew or frost point (user configurable option)

Start-up time and data refresh rate

Start-up time

1.9s (typical)

Data refresh rate

1.7s (typical)

Digital interface (service connector)

Interface type

UART (Universal Asynchronous Receiver Transmitter)

Maximum service cable length

5 m (16.4 ft)

General specifications

Probe material

PPS

Probe dust filter material

Depends on filter type

Housing material

Aluminum die cast

Housing protection grade

IP 65

Physical dimensions

Dimensions

Weight

Approx. 800 g (28.2 oz) + 140 g (4.9 oz) per probe extension unit

Conformity with 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)

Fire protection class

Corresponds to UL94-HB

FDA / GAMP directives

compatible

Environmental limits

Operating limits at electronics

-40…185 °C, 0…100 %RH, non condensing – valid for survival only

Temperature limits at probe

-100…+150 °C (valid for type Q)

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

40 m/s (7,870 ft /min) – depends on dust filter type

Critical environments

Humidity sensor: as per DV04-14.0803.02 – Critical chemicals

Configurable analog outputs

Output 1

Can be made to correspond to any parameter

Factory default parameter

Relative humidity

Factory default scale

As per ordering code

Output 2

Can be made to correspond to any parameter

Factory default parameter

Temperature

Factory default scale

As per ordering code

Output 1 and Output 2

Signal type

4…20 mA

0…20 mA

4… 20 mA

0… 1 V

0… 2 V

0… 5 V

0… 10 V

(user configurable)

Accuracy of analog output

±30 μA

±20 μA

±2 mV (0-1V)

±5 mV (0-10V)

User configurable scaling limits

-999.99 … 9999.99 engineering units

Maximum offset at bottom of signal range

no offset

0…1V signal range:       10 mV

0…2V signal range:       20 mV

0…5V signal range:       50 mV

0…10V signal range:     100 mV

0…20mA signal range:  0.2 mA

4…20mA signal range:  no offset

Short circuit tolerant

Yes

Maximum external load

500 Ω

500 Ω (current output)

Minimum external load

0 Ω

1 kΩ (0…1 V output)

2 kΩ (0…2 V output)

5 kΩ (0…5 V output)

10 kΩ (0…10 V output)

0 Ω (current output)