Rotronic 0210.HC2-SH User manual

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

1 of 51

Document title

HygroClip 2 (HC2) Humidity Temperature Probes

User Guide

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

2 of 51

Document title

Table of contents

1 Overview ................................................................................................................................................. 3

1.1 Hardware and software compatibility ................................................................................................... 3

2 Models .................................................................................................................................................... 4

3 General description ............................................................................................................................. 25

3.1 Power supply...................................................................................................................................... 25

3.2 Measured parameters ........................................................................................................................ 25

3.3 Calculated parameters ....................................................................................................................... 25

3.4 Analog output signals ......................................................................................................................... 25

3.5 Digital interface .................................................................................................................................. 26

3.6 Connector .......................................................................................................................................... 28

3.7 Sensor protection (dust filter) ............................................................................................................. 28

4 User configurable settings and functions ......................................................................................... 29

4.1 Function overview .............................................................................................................................. 30

4.2 Factory default settings ...................................................................................................................... 32

5 Mechanical installation ....................................................................................................................... 33

5.1 General guidelines for fixed installation .............................................................................................. 33

6 Electrical installation ........................................................................................................................... 34

6.1 General guidelines for fixed installation .............................................................................................. 34

6.2 Analog signal wiring ........................................................................................................................... 35

6.3 Minimum analog output load .............................................................................................................. 35

6.4 Digital signal wiring ............................................................................................................................ 35

6.5 Grounding .......................................................................................................................................... 35

7 Operation .............................................................................................................................................. 36

7.1 Operation with an indicator, data logger or transmitter ....................................................................... 36

7.2 Stand-alone operation as an analog probe ........................................................................................ 36

7.3 Connectivity examples for stand-alone probes................................................................................... 37

7.4 Hand-held probes used with an indicator ........................................................................................... 38

8 Maintenance ................................................................................................ ......................................... 39

8.1 Cleaning or replacing the dust filter .................................................................................................... 39

8.2 Periodic calibration check .................................................................................................................. 39

8.3 Validation of the output signals transmission ..................................................................................... 40

9 Firmware updates ................................................................................................................................ 41

10 Technical data ...................................................................................................................................... 42

10.1 Specifications ..................................................................................................................................... 42

10.2 Dew point accuracy ............................................................................................................................ 47

10.3 Effect of cable temperature on the accuracy of probes HC2-C04 and HC2-C05 ............................... 48

11 Accessories and parts ........................................................................................................................ 49

12 Supporting documents ....................................................................................................................... 50

13 Document releases .............................................................................................................................. 51

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

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E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

3 of 51

Document title

Applicability:

This manual applies to all HC2 probes with firmware version 3.0 or higher. Changes to the last digit of the
version number reflect minor firmware changes that do not affect the manner in which the probe should be
operated.

1 Overview

The HC2 series are digital humidity-temperature probes based on the AirChip 3000 technology. These probes
feature a UART serial interface and two 0…1 V linear analog output signals.

The HC2 probes are designed for use with the HygroClip 2 generation of ROTRONIC humidity-temperature
instruments: hand-held and bench top indicators, data loggers, transmitters, hygrostats, etc. The HC2 probes
maintain all of the benefits of the original HygroClip technology such as the possibility of hot-swapping probes
and feature significant improvements in the area of measurement accuracy and functionality.

The HC2 probes can also be used as a stand-alone device using either the analog output signals or the probe
digital interface. Connectors, cables and digital interface adapters are available to this purpose. Digital
integration with OEM applications is facilitated by the probe communication protocol options.

The HC2 probes offer the following user functions:

o User configurable settings
o Calculation of the dew or frost point
o Humidity temperature calibration and adjustment
o Simulator mode
o Automatic humidity sensor test and drift compensation
o Sensor failure mode
o Data recording

The ability for the user to easily update the AirChip 3000 firmware means that the HC2 probes can be kept up­to-date regarding any future functionality improvement.

Available in different configurations, the HC2 probe series is designed to meet the requirements of a large
number of applications and environments.

1.1 Hardware and software compatibility

The HC2 probes are compatible only with the AirChip 3000 generation of ROTRONIC humidity-temperature
instruments and are not backward compatible with instruments based on the previous technology.

Configuration of the HC2 probes and access to the probe functions requires a PC with the ROTRONIC HW4
software version 2.1.0 or higher or connection to a compatible instrument from ROTRONIC. For firmware
updates HW4 software version 3.3.0 or higher is needed.

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

4 of 51

Document title

2 Models

In the following tables, we have indicated the type of instrument primarily used with each probe model. The
following should also be noted:

o The HC2 probes can be directly connected to a PC or to an Ethernet network using one of the available

digital interface adapters (see separate document E-M-HC2-accessories).

o The HC2 Probes can also be used as a stand alone device with two analog output signals. Different

connectors are available to this purpose (see separate document E-M-HC2-accessories).

Regardless of the probe model, the analog outputs signals are always scaled in the same way by the factory
(0…1 V = 0…100 %RH and 0…1 V = -40…60 °C). The user is responsible for reconfiguring the probe analog
outputs (requires the ROTRONIC HW4 software) and for providing power to the probe.

Remark! On probes with an integrated cable such as the HC2-IC and HC2-IM family, Rotronic considers the
hard part of the extension to be part of the cable. This means that the effective flexible cable length is 1.85 m
(6.10 ft) for the 2 m cable versions and 4.85 m (15.91 ft) for the 5 m cable versions.

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

5 of 51

Document title

Climate measurement

For use with indicators, data loggers and transmitters, with or without an extension cable

HC2-S

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits: -50…100 °C (-58…212 °F)
Diameter: 15 mm (0.6”)
Length: 85 mm (3.3”)
Housing material: polycarbonate, black
Standard dust filter: Polyethylene, 20 µm
Sensor: HYGROMER® IN-1
Weight: 10 g (0.35 oz)

HC2-S3

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits: -50…100 °C (-58…212 °F)
Diameter: 15 mm (0.6”)
Length: 85 mm (3.3”)
Housing material: polycarbonate, white
Standard dust filter: Polyethylene, 40 µm
Sensor: HYGROMER® IN-1
Weight: 10 g (0.35 oz)

HC2-S-HH

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits: -50…100 °C (-58…212 °F)
Diameter: 15 mm (0.6”)
Length: 85 mm (3.3”)
Housing material: polycarbonate, black
Standard dust filter: MFD fleece
Sensor: HYGROMER® HH-1
Weight: 10 g (0.35 oz)

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

6 of 51

Document title

Climate measurement

For use with indicators, data loggers and transmitters, with or without an extension cable

HC2-SM

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits: -50…100 °C (-58…212 °F)
Diameter: 15 mm (0.6”)
Length: 85 mm (3.3”)
Housing material: Stainless steel, DIN 1.4301
Standard dust filter: Wiremesh filter, 20…25 µm
Sensor: HYGROMER® IN-1
Weight: 50 g (1.76 oz)

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

7 of 51

Document title

Measurement in tight spaces

For use with indicators, data loggers and transmitters

HC2-C04

Humidity measuring range: 0…100 %RH
Temperature limits -40…85 °C (-40…185 °F)
Diameter: 4 mm (0.16”), cable length (electronics – probe tip: about 0.59 m (1.9 ft)
Probe electronics housing: polycarbonate, black
Weight: approx. 150 g (5.3 oz)

HC2-C05

Same as HC2-C05 but with 5 mm diameter (0.2”)
Can be equipped with Teflon dust filter SP-T05
Weight: approx. 160 g (5.6 oz)

Note:
Accuracy of the HC2-C04 and HC2-C05 probe models is affected by the temperature of the cable separating
the sensors from the electronics (see §10.3).

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

8 of 51

Document title

Spot check measurements in air ducts, chambers and ovens

Handheld probe for use with indicators and data loggers

HC2-HK25

Humidity measuring range: 0…100 %RH
Temperature limits at sensor -100…150 °C (-148…302 °F)
Barrel: diameter: 15 mm (0.6”), length: 250 mm (9.8”)
Probe cable length: 2 m (6.5 ft)
Handgrip: POM, black -, barrel: PEEK, black
Filter base (NSP-ME) with wire mesh filter cartridge (SP-M15)
Weight: approx. 210 g (7.4 oz)

HC2-HK40

Humidity measuring range: 0…100 %RH
Temperature limits at sensor -100…200 °C (-148…392 °F)
Same as HC2-HK25 but with barrel 400 mm barrel length (15.7”)
Weight: approx. 240 g (8.5 oz)

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

9 of 51

Document title

Measurement of dust-free granular products in bulk

Handheld probe for use with indicators and data loggers

HC2-P05

Humidity measuring range: 0…100 %RH
Temperature limits -40…85 °C (-40…185 °F)
Barrel: diameter: 5 mm (0.2”), length: 200 mm (7.9”)
Probe cable length: 2 m (6.5 ft)
Handgrip: POM, black - barrel: stainless steel DIN 1.4305
Weight: approx. 160 g (5.6 oz)

Measurement of seeds, granulates and powders in bulk

Handheld probe for use with indicators and data loggers

HC2-HP28

Humidity measuring range: 0…100 %RH
Temperature limits at sensor -40…85 °C (-40…185 °F)
Barrel: diameter: 10 mm (0.4”), length: 280 mm (11.0”)
Probe cable length: 2 m (6.5 ft)
Handgrip: POM, black - barrel: stainless steel DIN1.4301
Dust filter: sintered steel filter cartridge (ET-Z10)
Weight: approx. 200 g (7.1 oz)

HC2-HP50

Humidity measuring range: 0…100 %RH
Same as HC2-HP28 but with barrel 500 mm barrel length (19.7”)
Weight: approx. 250 g (8.8 oz)

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

10 of 51

Document title

Measurement of paper – cardboard stacks and rolls

Handheld probe for use with indicators and data loggers

HC2-HS28

Humidity measuring range: 0…100 %RH
Temperature limits at sensor -40…85 °C (-40…185 °F)
Blade: thickness: 4 mm (0.16”), width: 22 mm (0.87”), length: 280 mm (11.0”)
Probe cable length: 2 m (6.5 ft)
Weight: approx. 240 g (8.5 oz)
Handgrip: POM, black - blade: aluminum / elox

HC2-HS42

Same as HC2-HS28 but with 420 mm blade length (16.5”)
Weight: approx. 300 g (10.6 oz)

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

11 of 51

Document title

Measurement of product samples (liquids, pastes, powders, granules or chunks)

Handheld probe for use with indicators and data loggers

HC2-AW

Humidity measuring range: 0…100 %RH
Temperature limits at sensor -40…85 °C (-40…185 °F)
Barrel: aluminum (top) , stainless steel (bottom)
Probe cable length: 0.95 m (37.5”)
Weight: approx. 541 g (1 lb 3.1 oz)

Power ON/OFF (push button)

Power Indicator (red LED)

Use together with WP14 or
WP-40 sample cup holder

Prior to use, verify the integrity
and cleanliness of the sealing
O-ring located under the probe

Note:
When using the HC2-AW probe, check that the red LED on top of the probe is lit. This indicates that the probe
is being powered. If necessary, power the probe by pressing once on the red button located on top of the probe.
When the red LED is not lit, the probe is not powered and the instrument is not receiving a signal from the probe.

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

12 of 51

Document title

Humidity and temperature measurement in paper industry

BFC-UART

Humidity measuring range: 0…100 %RH
Temperature limits at sensor -40…85 °C (-40…185 °F)
Barrel: aluminum (top) , stainless steel DIN 1.4301 (bottom)
Probe cable length: 0.95 m (37.5”)
Weight: approx. 1070 g (2 lb 3.2 oz)

Power ON/OFF (push button)

Power Indicator (red LED)

Fastening bolts

E2 connector

Fastening

Bore circle Ø 56 mm
Thread = M6 (3 * 120 °

Note:
When using the BFC-UART probe, check that the red LED on top of the probe is lit. This indicates that the probe
is being powered. If necessary, power the probe by pressing once on the red button located on top of the probe.
When the red LED is not lit, the probe is not powered and the instrument is not receiving a signal from the probe.

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

13 of 51

Document title

Process measurement (fixed installation)

For use with transmitters and data loggers

HC2-IC102
HC2-IC105

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C1 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 100 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)

Error! Bookmark not defined.

Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 230 g / 8.1 oz, 2 m cable
470 g / 16.6 oz, 5 m cable

HC2-IC302
HC2-IC305

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C1 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 250 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 260 g / 9.2 oz, 2 m cable
500 g / 17.6 oz, 5 m cable

HC2-IC402
HC2-IC405

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C1 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 400 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)

Error! Bookmark not defined.

5 m (16.4 ft)

Error! Bookmark not defined.

Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 290 g / 10.2 oz, 2 m cable
530 g / 18.7 oz, 5 m cable

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1

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

14 of 51

Document title

HC2-IC502
HC2-IC505

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C2 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 550 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 320 g / 11.3 oz, 2 m cable
560 g / 19.8 oz, 5 m cable

HC2-IC702
HC2-IC705

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C2 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 100 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 350 g / 12.3 oz, 2 m cable
590 g / 20.8 oz, 5 m cable

Find Quality Products Online at: [e-mail]

2

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peakloads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3
%RH over a 25 hours period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

15 of 51

Document title

Process measurement for hydrogen peroxide H2O2 applications

For use with transmitters and data loggers

HC2-IC102-HH
HC2-IC105-HH

Accuracy: ±1.2 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -50…120 °C (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 100 mm (3.9”). See note below
Cable length: 2 m (6.5 ft) 3
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® HH -1
Weight: 230 g / 8.1 oz, 2 m cable
470 g / 16.6 oz, 5 m cable

HC2-IC302-HH
HC2-IC305-HH

Accuracy: ±1.2 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -50…120 °C (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 250 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® HH -1
Weight: 260 g / 9.2 oz, 2 m cable
500 g / 17.6 oz, 5 m cable

HC2-IC402-HH
HC2-IC405-HH

Accuracy: ±1.2 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -50…120 °C (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 400 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® HH -1
Weight: 290 g / 10.2 oz, 2 m cable
530 g / 18.7 oz, 5 m cable

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3

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

16 of 51

Document title

HC2-IC502-HH
HC2-IC505-HH

Accuracy: ±1.2 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -50…120 °C (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 550 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® HH -1
Weight: 320 g / 11.3 oz, 2 m cable
560 g / 19.8 oz, 5 m cable

HC2-IC702-HH
HC2-IC705-HH

Accuracy: ±1.2 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -50…120 °C (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 100 mm (3.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® HH-1
Weight: 350 g / 12.3 oz, 2 m cable
590 g / 20.8 oz, 5 m cable

Find Quality Products Online at: [e-mail]

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

17 of 51

Document title

Process measurement (fixed installation)

For use with transmitters and data loggers

HC2-IC302-A
HC2-IC305-A

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C4 (-148…392 °F)
Diameter barrel: 25 / 15 mm (1.0 / 0.6”)
Length (probe head): 250 mm (9.8”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 290 g / 10.2 oz, 2 m cable
530 g / 18.7 oz, 5 m cable

HC2-IC402-A
HC2-IC405-A

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C3 (-148…392 °F)
Diameter barrel: 25 / 15 mm (1.0 / 0.6”)
Length (probe head): 400 mm (15.7”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 320 g / 11.3 oz, 2 m cable
560 g / 19.8 oz, 5 m cable

Find Quality Products Online at: [e-mail]

4

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

18 of 51

Document title

HC2-IC502-A
HC2-IC505-A

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C5 (-148…392 °F)
Diameter barrel: 25 / 15 mm (1.0 / 0.6”)
Length (probe head): 550 mm (21.6”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 350 g / 12.3 oz, 2 m cable
590 g / 20.8 oz, 5 m cable

HC2-IC702-A
HC2-IC705-A

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C4 (-148…392 °F)
Diameter barrel: 25 / 15 mm (1.0 / 0.6”)
Length (probe head): 700 mm (27.5”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 380 g / 13.4 oz, 2 m cable
770 g / 27.1 oz, 5 m cable

Find Quality Products Online at: [e-mail]

5

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

19 of 51

Document title

Process measurement (fixed installation)

For use with transmitters and data loggers

HC2-IM102
HC2-IM105

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C6 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 120 mm (4.7”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK (connector)
Stainless steel, DIN 1.4301 (probe head)
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 260 g / 9.2 oz, 2 m cable
420 g / 14.8 oz, 5 m cable

HC2-IM302
HC2-IM305

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C5 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 280 mm (11.0”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK (connector)
Stainless steel, DIN 1.4301 (probe head)
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 400 g / 14.1 oz, 2 m cable
640 g / 22.6 oz, 5 m cable

Find Quality Products Online at: [e-mail]

6

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

20 of 51

Document title

HC2-IM402
HC2-IM405

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C7 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 430 mm (16.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK (connector)
Stainless steel, DIN 1.4301 (probe head)
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 540 g / 19.0 oz, 2 m cable
780 g / 27.5 oz, 5 m cable

HC2-IM502
HC2-IM505

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C6 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 580 mm (22.8”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK (connector)
Stainless steel, DIN 1.4301 (probe head)
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 680 g / 24.0 oz, 2 m cable
920 g / 32.5 oz, 5 m cable

Find Quality Products Online at: [e-mail]

7

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

21 of 51

Document title

HC2-IM102-M
HC2-IM105-M

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C8 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 120 mm (4.7”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: Stainless steel, DIN 1.4301
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 310 g / 10.9 oz, 2 m cable
470 g / 16.6 oz, 5 m cable

HC2-IM302-M
HC2-IM305-M

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C7 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 280 mm (11.0”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: Stainless steel, DIN 1.4301
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 460 g / 15.9 oz, 2 m cable
690 g / 24.3 oz, 5 m cable

Find Quality Products Online at: [e-mail]

8

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

22 of 51

Document title

HC2-IM402-M
HC2-IM405-M

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C9 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 430 mm (16.9”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: Stainless steel, DIN 1.4301
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 590 g / 20.8 oz, 2 m cable
820 g / 28.9 oz, 5 m cable

HC2-IM502-M
HC2-IM505-M

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C8 (-148…392 °F)
Diameter barrel: 15 mm (0.6”)
Length (probe head): 580 mm (22.8”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: Stainless steel, DIN 1.4301
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 730 g / 25.7 oz, 2 m cable
970 g / 34.2oz, 5 m cable

Note 1:

o HC2-IMxxx-M probes are the same as HC2-IMxxx but are equipped with a stainless steel connector

instead of PPS.

o HC2-IM102 (120 mm barrel length) - to avoid measurement errors due to temperature gradients fully

immerse the probe barrel in the environment to be measured.

Find Quality Products Online at: [e-mail]

9

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

23 of 51

Document title

Measurement in compressed air conduits and vessels (fixed installation)

For use with transmitters and data loggers

HC2-IE102
HC2-IE105

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C10 11 (-148…392 °F)
Thread: G1/2”
Recommended torque: 70 Nm
Pressure resistant: 100 bar / 1450 PSI
Length (probe head): 120 mm (4.7”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK (connector)
Stainless steel, DIN 1.4301 (probe head)
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 290 g / 10.2 oz, 2 m cable
660 g / 23.2 oz, 5 m cable

HC2-IE302
HC2-IE305

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C

9 10

(-148…392 °F)
Thread: NPT ½”
Recommended torque: 70 Nm
Pressure resistant: 100 bar / 1450 PSI
Length (probe head): 120 mm (4.7”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: PEEK (connector)
Stainless steel, DIN 1.4301 (probe head)
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 290 g / 10.2 oz, 2 m cable
660 g / 23.2 oz, 5 m cable

Find Quality Products Online at: [e-mail]

10

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

11

The sealing ring withstands only -40…85 °C

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

24 of 51

Document title

HC2-IE102-M
HC2-IE105-M

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C12 13 (-148…392 °F)
Thread: G1/2”
Recommended torque: 70 Nm
Pressure resistant: 100 bar / 1450 PSI
Length (probe head): 120 mm (4.7”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: Stainless steel, DIN 1.4301
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 290 g / 10.2 oz, 2 m cable
660 g / 23.2 oz, 5 m cable

HC2-IE302-M
HC2-IE305-M

Accuracy: ±0.8 %RH, ±0.1 K at 10…30 °C
Humidity measuring range: 0…100 %RH
Temperature limits at sensor: -100…200 °C

11 12

(-148…392 °F)
Thread: NPT ½”
Recommended torque: 70 Nm
Pressure resistant: 100 bar / 1450 PSI
Length (probe head): 120 mm (4.7”). See note below
Cable length: 2 m (6.5 ft)
5 m (16.4 ft)
Housing material: Stainless steel, DIN 1.4301
Standard filter: None, must be ordered separately
Sensor: HYGROMER® IN-1
Weight: 290 g / 10.2 oz, 2 m cable
660 g / 23.2 oz, 5 m cable

Find Quality Products Online at: [e-mail]

Note 1:

o HC2-IExxx-M probes are the same as HC2-IExxx but are equipped with a stainless steel connector

instead of PPS.

o To avoid measurement errors, temperature should be the same on both sides of the mounting wall

12

Rotronic probes allow a peak load of 3x5 minutes at 200 °C without suffering any permanent damage. The time

between the peak
loads is of no importance. Longer peak loads can result in an increased sensor drift of up to 3 %RH over a 25 hours
period.

13

The sealing ring withstands only -40…85°C

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

25 of 51

Document title

3 General description

3.1 Power supply

The accuracy specified for the HC2 probes is valid only when the probe is supplied with a voltage within the
range of 3.3…5 VDC. The probes are tested and adjusted at the factory using a supply voltage of 3.3 VDC.

When a voltage source of 3.3…5 VDC is not available, the probe should be used together with a voltage adapter
(see separate document E-M-HC2-accessories) so as to provide 3.3…5 VDC to the probe. Use of a voltage
adapter allows powering the probe from a voltage source of 5 to 24 VDC or 5 to 16 VAC.

During start-up the typical current consumption of the probe is initially 8 mA during 2ms and 5 mA during the
next 2s. Without a power supply limiter, the start-up current may reach a maximum of 50 mA. After start-up the
current consumption is on average less than 3 mA. Randomly distributed current spikes of maximum 1 mA
during 2μs are normal during operation and are caused by the probe micro-processor and associated
components.

The HC2 probes are polarity protected by a keyed connector. There is no electrical polarity protection.

3.2 Measured parameters

The HC2 probe measures relative humidity with a ROTRONIC Hygromer® IN1 capacitive sensor and
temperature with a Pt100 RTD.

3.3 Calculated parameters

Using the ROTRONIC HW4 software, the HC2 probe can be configured by the user to calculate either the dew
point or the frost point.

3.4 Analog output signals

The HC2 probe features two 0…1 V linear analog output signals. The default factory settings are as follows:

Output 1: 0…1 V (humidity) = 0…100 %RH

Output 2: 0…1 V (temperature) = -40…60˚C

Using the ROTRONIC HW4 software any output signal can be made to correspond one of the following:

o Relative humidity
o Temperature
o Dew or frost point

The scale of each analog output can be set within the numerical limits of -999.99 and 9999.99.
If so desired, any output can also be disabled (no signal).
The D/A converters used to generate the analog output signals feature a 16-bit resolution. The 0…1 V analog
output signals exhibit a small positive offset of 3 mV or less at 0 V.
Minimum load requirements apply to the external device or circuit connected to the probe voltage outputs. These
requirements are defined in the “Operation” chapter

Note:

Find Quality Products Online at: [e-mail]

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

26 of 51

Document title

Users who require an analog signal other than 0…1 V should either contact ROTRONIC or connect the probe
to one of the available transmitters.

3.5 Digital interface

The HC2 probe features a UART interface (Universal Asynchronous Receiver Transmitter) that allows two-way
communication with the probe. For connecting the HC2 probe to a PC, use any of the following digital adapter
cables AC3001, AC3002 or AC3005 (see document E-M-HC2-accessories). The probe can also be indirectly
connected to a PC using an instrument from the ROTRONIC program.

The ROTRONIC HW4 software (version 2.1.0 or higher) allows full access to the following:

o Measurement data (humidity and temperature) and calculated parameter (dew or frost point)
o Probe information: name, RS-485 address, humidity sensor status, etc.
o Probe alarm functions
o Probe data logging function
o Probe calibration and probe adjustment functions
o Probe configuration

The ROTRONIC HW4 software (version 3.3.0 or higher) allows full access to the following:

o Firmware update of HygroClip probes

Communication protocol options

The probe measurement data can be read without having to use the ROTRONIC HW4 software. Starting with
firmware version 1.3, the HC2 probe offers the following communication protocol options (ASCII) which can be
selected by connecting the probe to a PC running the ROTRONIC HW4 software (version 2.1.1 or higher):

o RO-ASCII: this is the standard (default) communication protocol used by all AirChip 3000 devices and

by the HW4 software. In principle, this protocol supports all of the AirChip 3000 functions but some of
the functions require a certain amount of computations to be carried out by an external device such as a
PC.

o Custom: this communication protocol can be used to provide compatibility of the HC2 probe with an

existing communication system. The Custom communication protocol is limited to reading measurement
data from the HC2 probe. Functions such as device configuration, humidity and temperature adjustment,
etc. are not supported. The Custom protocol is applicable to all AirChip 3000 devices with a digital
interface and allows RS-485 networking

o I2C: The I2C protocol available with the HC2 probe does not allow the networking of devices and is

limited to a one way communication where the HC2 probe automatically sends data during each refresh
interval to an external device with I2C input.

When using either the RO-ASCII or the Custom protocol, the HC2 probe can be set to send data automatically
after each refresh cycle without requiring a data request. When this mode is enabled, the receiving device must
be listening at all times in order to get the measurement data.

For details, see document E-M-AC3000-CP

Find Quality Products Online at: [e-mail]

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

27 of 51

Document title

Find Quality Products Online at: [e-mail]

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

28 of 51

Document title

Material

Maximum temperature

Notes

Polyethylene

100 °C (212 °F)

Recommended filter material for all applications
below 100 °C. Good response and good
protection against fine dust particles. No water
absorption or retention

Teflon

200 °C (392 °F)

Good protection against fine dust particles and
salt (marine environments). Moderately slow
response

Stainless steel wire
mesh

200 °C (392 °F)

Provides fastest response time. Not
recommended in environments with fine dust
particles (clogging) and in bioactive environments

Stainless steel sintered
filter

200 °C (392 °F)

Good response at low humidity levels. Do not use
at high humidity levels. Provides best protection
against abrasive particles

Probe connector (7-pin male – looking at probe)

Pin #

Wire Color

Name

Function

1

Green

VDD (+)

3.3 to 5 VDC

2

Grey

GND

Power and digital signal

3

Red

RXD

UART

4

Blue

TXD

UART

5

White

Out 1 analog (+)

Humidity 0…100%RH (default)

6

Brown

Out 2 analog (+)

Temperature -40…60°C (default)

7

Yellow

AGND

Analog signal ground

3.6 Connector

All standard probe models of the HC2 series use the same keyed connector (male). The connector is located
either directly on the probe body or at the end of a cable. The probe connector is secured to the matching female
connector with a threaded collar.

Pin-out diagram

3.7 Sensor protection (dust filter)

Most probes of the HC2 series are supplied with a filter to protect the sensors against dust particles and high
air velocity. Depending on the probe model the following types of filter materials are used:

Note:
Depending on the probe model, the dust filter is either automatically included with the probe or it must be
ordered separately (see Models).

Find Quality Products Online at: [e-mail]

©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

29 of 51

Document title

4 User configurable settings and functions

The HC2 probe ships configured as per the factory defaults:

o Users who intend to use the probe as a stand-alone analog device can use the probe as any conventional

humidity and temperature probe. A connecting cable with active electronics may be required to power
the probe. Most such users will never have to use the probe configurable settings and functions

o Users who purchased a probe for use with another ROTRONIC instrument can also use the probe right

away and do not necessarily have to use the probe configurable settings and functions

o Users that intend to use the probe as a stand-alone digital device typically need to use a connecting

cable with active electronics and generally need to configure either the probe or the PC

Making use of the probe configurable settings and functions is entirely up to the user and the appropriate settings
depend on the user application. We have provided below a short description of the probe functions and also
indicated the factory default settings.

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

30 of 51

Document title

MEASUREMENT ACCURACY AND RELIABILITY

AirChip 3000 Functions

Description

► Humidity / temperature adjustment

o 1-point or multi-point humidity calibration or adjustment
o 1-point or 2-point temperature calibration or adjustment
o Generate a time stamp for calibrations and adjustments
o Retain and view last adjustment date and adjustment values
o Generate calibration and adjustment protocols

► Automatic humidity sensor test
and optional drift compensation

Tests the humidity sensor for drift caused by contaminants and
can be used to automatically apply a correction. The test is
automatically carried out at regular intervals of time. Can be
configured, enabled, or disabled

The humidity sensor status can be verified either with the HW4
software and is shown as Good, SQ-tuned (corrected for drift) or
Bad (defective)

► Data recording

The data recording function differs from a true data logging
function in the sense that the AirChip 3000 does not time stamp
the data. This data recording function can be used to investigate
events such as a sensor malfunction as well as to retrieve data
that would otherwise be lost

o Start or stop data recording - up to 2000 value pairs (%RH

and temperature). Starting a recording session erases all
previously recorded data

o The recording mode and log interval can be specified
o When the probe is powered off, the recording session is

paused but not ended As long as the recording session has
not been ended, the probe automatically resumes recording
data when powered up again

o The recorded data can be downloaded to a PC with the

HW4 software, time stamped and viewed

MEASUREMENT LOOP VALIDATION

AirChip 3000 Functions

Description

► Simulator mode

Used to make the probe generate fixed values for the
humidity, temperature and calculated parameter. Can be
configured, enabled or disabled

4.1 Function overview

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

31 of 51

Document title

SAFEGUARDS

AirChip 3000 Functions

Description

► Device write protection

Used to protect the probe with a password to prevent
unauthorized digital access by a digital user. Can be
configured, enabled or disabled

PROCESS PROTECTION / PROTECTION OF OTHER DEVICES

AirChip 3000 Functions

Description

► Limit humidity output to 100 %RH

Used to prevent the humidity signal from exceeding
100 %RH when condensation forms on the sensor. Can be
enabled or disabled

► Out-of-limit value alarm

Used to specify the normal range for humidity, temperature
and the calculated parameter depending on the user
application. Can be configured, enabled or disabled

Out-of-limit values trigger a digital alarm

► Bad sensor alarm

Built-in function. Cannot be disabled

A bad humidity or temperature sensor triggers a digital alarm

► Fail safe mode

Used to specify a "safe" fixed value for humidity and for
temperature in the event of a sensor failure. Can be
configured, enabled or disabled

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©2018; Rotronic AG E-M-HC2 Probes-V1_39

www.GlobalTestSupply.com

E-M-HC2 Probes-V1_39

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

Document Type

Page

32 of 51

Document title

Configurable Settings

Factory default

Unit system (Metric or English)

Metric

Psychrometric calculation

None

Output 1 parameter, scale and unit

Humidity: 0…100%RH

Output 2 parameter, scale and unit

Temperature: -40…60 ˚C

Communication protocol

RO-ASCII

RS-485 address

0

Device name

Probe type

Functions

Factory default

Humidity / temperature adjustment

Enabling / Disabling only by HW4 user rights possible

Device write protection

Disabled

Limit humidity output to 100 %RH

Enabled

Out-of-limit value digital alarm

Disabled

Data recording

Disabled

Automatic humidity sensor test

Disabled

Humidity sensor drift compensation

Disabled

Fail safe mode

Disabled

Simulator mode

Disabled

4.2 Factory default settings

Note:

Configuration of the probe by the user and access to its functions requires a PC with the ROTRONIC HW4
software (version 2.1.1 or higher) installed. For connecting the HC2 probe to a PC, use any of the following
digital adapter cables AC3001, AC3002 or AC3005 (see document E-M-HC2-accessories).

o For a detailed description of all AirChip 3000 / probe main functions see document E-T-AC3000-DF-V1

o Instructions regarding the configuration of the probe and access to its functions are provided in the

following manuals:

E-M-HW4v3-Main
E-M-HW4v3-F2-001
E-M-HW4v3-DR-001
E-M-HW4v3-A2-001
E-M-AC3000-CP

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Unit

HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

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Document title

5 Mechanical installation

Note:

The following instructions apply only to the situation where the HC2 probe is fixed installed.

5.1 General guidelines for fixed installation

For best results, please observe the following guidelines:

o Install the probe at a location where humidity, temperature and pressure conditions are representative

of the environment or process to be measured. Avoid the following: (a) Close proximity of the probe to a
heating element, a cooling coil, a cold or hot wall, direct exposure to sun rays, etc. (b) Close proximity of
the probe to a steam injector, humidifier, direct exposure to precipitation, etc. (c) Unstable pressure
conditions resulting from excessive air turbulence.

o When installing the probe on a wall, do not place the probe right above a heat producing device of

instrument such as a transmitter or an Ethernet adapter (warm air tends to rise).

o If possible, choose a location that provides good air movement at the probe: air velocity of at least 1

meter/second (200 ft/ minute) facilitates adaptation of the probe to changing temperature.

o When installing the probe through a wall, immerse as much of the probe as possible in the environment

to be measured.

Position the probe so as to prevent the accumulation of condensation water at the level of the sensor leads.
Install the probe so that the probe tip is looking downward. If this is not possible, install the probe horizontally.

Depending on the probe model, a probe holder (mounting flange with a compression fitting) can facilitate
installation through a wall.

Future maintenance can be made easier by providing next to the probe a calibration access orifice. During
maintenance, this permits the insertion of a reference probe (calibrator).The calibration access orifice should
have the same size as the orifice used to install the probe and can be equipped with a probe holder.

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

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6 Electrical installation

Note:

The following instructions apply only to the situation where the HC2 probe is fixed installed.

6.1 General guidelines for fixed installation

Power supply wiring

Heavy machinery and instrumentation should not share the same power supply wiring. If this cannot be avoided,
noise filters and surge protectors should be used. Most UPS devices have those features already integrated.

General guidelines for signal cables

The following guidelines are derived from European Standard EN 50170 for the transmission of signals by
copper wires. When planning an installation, the rules provided by EN 50170 should be followed under
consideration of local circumstances to determine the position of machines and equipment.

Whenever the level of electromagnetic interference is expected to be high, both the instruments and signal
cables should be placed as far away as possible from the source of interference.

In general, signal cables should be installed in bundles or channels / conduits, separate from other cables as
indicated in the table below:

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o Bus signals such as RS485
o Data signals for PCs, printers etc.
o shielded analog inputs
o unshielded direct current (<= 60V)
o shielded process signals (<= 25 V)
o unshielded alternate current (<= 25V)
o coaxial cables for CRT monitors

in common bundles or channels / conduits

o direct current from 60 V to 400 V

(unshielded)

o alternate current from 25V to 400 V

(unshielded)

in separated bundles or channels /
conduits, without minimum distance

o direct and alternate current > 400 V

(unshielded)

o Telephone lines
o lines leading into EX-rated areas

in separated bundles or channels /
conduits, without minimum distance

Lightning protection

Cabling in areas with a risk of lightning requires a lightning protection. For cabling underground in between
buildings, we recommend the use of special fiber optic cables. If this is not possible, use copper cables that are
suitable for underground installation.

6.2 Analog signal wiring

Preferably use a shielded cable to connect the analog outputs of the HC2 to other devices. The maximum cable
length is determined by the maximum error that the user will accept. This can be calculated as follows:

Error (V) = cable resistance x current through load

6.3 Minimum analog output load

The HC2 analog outputs are short circuit tolerant and have an internal resistance of less than 10 Ω
For proper operation, the minimum external load of each output should be at least 1000 Ω.

6.4 Digital signal wiring

Use one of the available connecting cables (see Accessories) to connect the UART digital interface of the HC2
probe to other devices. Without a signal booster, the maximum cable length should not exceed 5 m (16 ft).

6.5 Grounding

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In the case of a fixed installation, ground the HC2 probe, especially if the electronics will be subjected to a low
humidity environment (35 %RH or less). The power supply and digital ground (GND) and the analog ground

(AGND) should be tied separately to a proper ground so as to avoid spikes in the analog signals.

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

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HFC2 output signal

Input resistance RL

0…1V

>=1kOhm

HC2 signal

VCC

R pull-up

RL

0…1V

3.3V

≥ 250 kOhm

1 kOhm

HC2 signal

VCC

R pull-up

RL

0…1V

5.0V

≥ 400 kOhm

1 kOhm

HC2 signal

VCC

R pull-up

RL

0…1V

10.0V

≥ 1 MOhm

1 kOhm

RL

GND

HC2

Voltage Output

R Pull-up

RL

GND

VCC

HC2

Voltage Output

7 Operation

7.1 Operation with an indicator, data logger or transmitter

The HC2 probes are compatible with a large number of indicators, data loggers and transmitters from
ROTRONIC. Operating instructions are provided in each device manual.

7.2 Stand-alone operation as an analog probe

The HC2 probes can be used as a conventional analog probe. See Accessories, supply voltage adapters,
connectors and cables. Use the HW4 software to configure the probe as desired, complete the mechanical and
electrical installation and power up the probe.

Minimum load requirements for the probe voltage outputs

The following requirements apply to any external device or circuit connected to the probe voltage outputs:

In the situation where the external device uses an internal pull-up resistor the value of this resistor should meet
the requirements shown below. It is also necessary to add a pull-down resistor RL connected to ground in order
to be able to read 100% of the range of the probe voltage output.

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

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USB or TCP/IP port

Master

E2-01XX-MOD

Slave

HC2 probe

240 
240 

RS-485 device connectors

Stand-alone operation as a digital probe (PC or network)
The HC2 probes can be connected to a PC or to an Ethernet network with one of the available digital interface
adapters (see Accessories). Probe configuration and full access to all probe functions requires a PC with the
ROTRONIC HW4 software installed. Starting with firmware version 1.3, the probes accept several
communication protocols that allow users to read the measurement data without the HW4 software. When using
the standard RO-ASCII protocol, access to some of the probe functions is also possible without HW4. For
details, see document E-M-AC3000-CP.

7.3 Connectivity examples for stand-alone probes

Digital connection example: RS-485 network

Addr. 1

Note:

o The master device can be either a transmitter such as the HF5 (USB or TCP/IP interface) or an adapter

such as the AC3010 cable (USB)

o Power to the combination E2-01XX-MOD and HC2 probe can be provided by an individual AC adapter

or by a central voltage source connected to the RS-485 network (requires cables with 2 twisted pairs:
one for the data, the other for power)

(T Connection)

Adapter

Addr. n

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

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E2-01XX-ACT

HC2 probe

Voltage Source

Controller

Cable ended with open wires

2 x analog signal

Analog connection example:

Voltage
Adapter

5…24 VDC

or

5…16 VAC

0…1 VDC

(or other)

7.4 Hand-held probes used with an indicator

The most common source of error when measuring relative humidity with a hand-held probe is a difference
between the temperature of the probe and the temperature of the environment. At a humidity condition of 50
%RH, a temperature difference of 1C (1.8 F) typically results in an error of 3 %RH on relative humidity.

When using a humidity probe with a portable indicator, it is good practice to monitor the display for temperature
stability. When moving the probe from one area to another, the probe should be given sufficient time to
equilibrate with the environment to be measured. This time can be shortened, and errors avoided, by using the
probe configuration that fits best for your application.

In extreme situations, condensation may occur on the sensors when the probe is colder than the environment.
As long as the humidity / temperature limits of the humidity sensor are not exceeded, condensation does not
alter the calibration of the sensor. However, the sensor has to dry out before it can provide a valid measurement.

Non-moving air is an excellent insulator. When there is no air movement, surprising differences in temperature
and humidity can noted over short distances. Air movement at the probe generally results in measurements that
are both faster and more accurate.

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

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8 Maintenance

8.1 Cleaning or replacing the dust filter

Depending on the conditions of measurement, the filter should be checked from time to time. Corroded,
discolored or clogged filters should be replaced.

o If the probe has a removable cartridge, simply replace the cartridge (leave the metal base on the probe).

o If the probe has a plastic slotted cap with a built-in filter element follow these instructions:

1) Unscrew the filter from the probe and pull it straight away, in the alignment of the probe, so as not
the catch the humidity and temperature sensors.

2) Before putting on a new dust filter, check the alignment of both sensors with the probe. The wires
that connect the sensors to the probe are very thin and bend easily. If necessary, correct the
alignment by tapping the sensor very gently with a smooth object such as a small plastic rod. Do
not use sharp pliers or tweezers as this could puncture the sensor and do not pull hard on the
sensor.

8.2 Periodic calibration check

Both the Pt 100 RTD temperature sensor and associated electronics are very stable and should not require any
calibration after the initial factory adjustment.

Long term stability of the ROTRONIC Hygromer humidity sensor is typically better than 1 %RH per year. For
maximum accuracy, calibration of the probe should be verified every 6 to 12 months. Applications where the
probe is exposed to contaminants may require more frequent verifications. Calibration and adjustment of the
HC2 probe can be done with either a PC with the HW4 software installed (version 2.1.0 or higher) or with the
HP23 hand-held calibrator. For connecting the HC2 probe to a PC, use any of the following digital adapter
cables AC3001, AC3002 or AC3005 (see document E-M-HC2-accessories).

Procedure for adjusting the HC2 probe with the ROTRONIC HW4 software:

o Connect the HC2 probe to the HW4 PC as explained in the HW4 manual E-M-HW4v3-Main
o Start HW4 software on the PC and search for the HC2 probe. (HW4 Main Menu Bar > Devices and

Groups > Search for USB masters or Search for RS232 masters or search for Ethernet masters,
depending on the connecting cable).

o After finding the HC2 probe with HW4, expand the device tree to see the HC2 probe functions and

select Probe Adjustment.

o For further instructions see HW4 manual E-M-HW4v3-A2-001

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

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8.3 Validation of the output signals transmission

If so desired, transmission of the HC2 probe output signals can be validated by using the probe simulator
function. The HW4 software is required to enable and configure this function. When the function is enabled the
probe generates digital and analog signals corresponding to values specified by the user.

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

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9 Firmware updates

Firmware updates will be available on the ROTRONIC website for downloading. Firmware files are given a name
that shows both to which device the file applies and the version number of the firmware. All firmware files have
the extension HEX. For connecting the HC2 probe to a PC, use any of the following digital adapter cables
AC3001, AC3002 or AC3005 (see document E-M-HC2-accessories).

Procedure for updating the firmware:

o Connect the HC2 probe to the HW4 PC as explained in the HW4 manual E-M-HW4v3-Main
o Copy the firmware update file from the ROTRONIC website to the PC.
o Start HW4 software on the PC and search for the HC2 probe. (HW4 Main Menu Bar > Devices and

Groups > Search for USB masters or Search for RS232 masters or search for Ethernet masters,
depending on the onnecting cable).

o After finding the HC2 probe, expand the device tree to see the HC2 probe functions. Select Device

Manager. In the Device Manager menu bar select Tools > Firmware Update. For instructions see
document E-M-HW4v3-F2-001

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HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide

Instruction Manual

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General

Device type

Humidity temperature probe

Mechanical configuration

See models

IP protection class

IP65

Power supply and connections

Supply voltage (VDD)

3.3…5 VDC ±0%

Recommended supply voltage

3.3 VDC

Supply voltage during factory
tests and adjustment

3.3 VDC
Supply voltage stability / ripple

See System Accuracy, effect of VDD

Nominal current consumption

<4.5 mA at VDD = 3.3…5 VDC

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

1 mA during maximum 2µs
Polarity protection

Mechanical only (keyed connector)

Humidity measurement

Sensor

ROTRONIC Hygromer ® IN1

Measuring range

0…100 %RH

Measurement accuracy

±0.8 %RH, at 10…30 °C (HC2-S(3), HC2-IC, HC2-IM, HC2-IE)
±0.5 %RH, at 10…30 °C / 10..90 %RH (HC2-S(3)H)
±1.5 %RH (HC2-C04, HC2-C05;see also §10.3)

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 class A (HC2-S)
Pt100 RTD, IEC 751 1/3 class B (HC2-IC / HC2-IM / HC2-IE)

Measuring range

-100…200 °C (see also environmental limits)

Measurement accuracy

±0.1 °C, at 10…30 °C
±0.3 °C, at 10…30 °C (HC2-C04, HC2-C05; see also §10.3)

Repeatability

0.05 °C

Long term stability

<0.1 °C / year

Sensor time constant

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

10 Technical data

10.1 Specifications

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Calculated parameters

Psychrometric calculations

Dew or frost point (user configurable)

Start-up time and data refresh rate

Start-up time

1.5 s (typical)

Data refresh rate

1.0 s (typical) – when not calculating any parameter

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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 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

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)

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HygroClip 2 (HC2) Humidity Temperature
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General specifications

Housing material

See Models

Collar material (connector)

Stainless steel, DIN 1.4301

Dust filter material

See Models

Protection grade

IP65

Physical dimensions

See Models

Weight

See Models

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Probes: User Guide

Instruction Manual

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Conformity to standards

CE / EMC immunity

EMC Directive:
until 20.04.2016: 2004/108/EG
from 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

Performance criterion: www.rotronic.com

Solder type

Lead free (RoHS directive 2011/65/EU)

FDA / GAMP directives

compatible

Environmental limits

Storage and transit

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

Operating limits at electronics

-50 … +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

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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.

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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]

Error [%RH]

-40 °C

-20 °C
0 °C
23 °C
40 °C
60 °C
85 °C

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.

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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

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Document File Name

Contents

E-M-HC2-accessories

Accessories and parts for probes, indicators and transmitters

E-T-AC3000-DF-V1

AirChip 3000 Description and Main Functions

E-M-HW4v3-DIR

List of the HW4 manuals

E-M-HW4v3-Main

HW4 software version 3: General instructions and functions common to all
devices

E-M-HW4v3-F2-001

HW4 software version 3: HC2 probe series
Device configuration and AirChip 3000 functions

E-M-HW4v3-A2-001

HW4 software version 3: Probe Adjustment function AirChip 3000 devices

E-M-HW4v3-DR-001

HW4 software version 3: Data Recording Function AirChip 3000 Devices

E-M-AC3000-CP

AirChip 3000 Communication Protocol

E-M-TCPIP-Conf

Configuration procedures for ROTRONIC devices
with Ethernet (TCP/IP) interface

E-M-CalBasics

Temperature and humidity adjustment basics
Instructions for using the ROTRONIC humidity standards

E-T-HumiDefs

Humidity Definitions

12 Supporting documents

Note:

All document file names have an extension corresponding to the document release number (example of a first
release: E-M-HW4v2-Main_10). This extension is not shown in the above table.

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Doc. Release

Date

Notes

_20

Apr. 11, 2009

Original release

_21

Aug. 19, 2009

Added probe model HC2-AW
Corrected the specification of some of the probe materials

_22

Jun. 18, 2010

Updated document to HW4 software v.3

_23

May 20, 2011

Modified dimensional specifications of the HC2-C04 probe

_24

Jan. 6, 2012

Changed the factory default for data recording to “disabled”

_25

May 30, 2013

Page 10: reduced maximum pressure to 100 bar / 1450 PSI for
the HC2-IE102/105 and HC2-IE302/305

_26

Nov. 2013

Changes for HygroClip2 with firmware v3.0
Power supply range changed to 3.3…5 VDC
HC2-IE maximum pressure range changed to 100 bar.
Added HC2-SM
Added HC2-IMxxx-M
Added HC2-IExxx-M

_27

July 2014

Korrections of technical specification

_28

March 2015

Update of Pt100 class. Industrial probes are delivered with
Pt100 1/3 class B since the end of March 2015.

_29

March 2015

Accuracy range updated

_30

March 2015

IP protection class added
Updated spec of collar material

_31

April 2015

HC2-S-HH, HC2-ICxxx-HH probes integrated

_32

June 2015

Update of document layout

_33

July 2015

Specification of HC2-IC / HC2-IM / HC2-IE adpated

_34

September 2015

HC2-IC, HC2-IM, HC2-IE: temperature specifications adapted

_35

November 2015

Update temperature specification HC2-IE sealing ring

_36

December 2015

BFC-UART added

_37

January 2015

Recommended torque for HC2-IE probes added

_38

May 2016

Update EMC guideline

_39

August 2018

Remark on cable length in §2

13 Document releases

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