Rotronic HygroClip2 Operating Manual
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
1 of 29
Document title
HygroClip 2 (HC2) Humidity Temperature Probes
User Guide
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
2 of 29
Document title
Table of contents
1 Overview ................................................................................................................................................. 3
1.1 Hardware and software compatibility ................................................................................................... 3
2 Models .................................................................................................................................................... 4
3 General description ............................................................................................................................. 11
3.1 Power supply...................................................................................................................................... 11
3.2 Measured parameters ........................................................................................................................ 11
3.3 Calculated parameters ....................................................................................................................... 11
3.4 Analog output signals ......................................................................................................................... 11
3.5 Digital interface .................................................................................................................................. 12
3.6 Connector .......................................................................................................................................... 13
3.7 Sensor protection (dust filter) ............................................................................................................. 13
4 User configurable settings and functions ......................................................................................... 14
4.1 Function overview .............................................................................................................................. 14
4.2 Factory default settings ...................................................................................................................... 15
5 Mechanical installation ....................................................................................................................... 17
5.1 General guidelines for fixed installation .............................................................................................. 17
6 Electrical installation ........................................................................................................................... 18
6.1 General guidelines for fixed installation .............................................................................................. 18
6.2 Analog signal wiring ................................ ................................ ........................................................... 19
6.3 Minimum analog output load .............................................................................................................. 19
6.4 Digital signal wiring ............................................................................................................................ 19
6.5 Grounding .......................................................................................................................................... 19
7 Operation .............................................................................................................................................. 19
7.1 Operation with an indicator, data logger or transmitter ....................................................................... 19
7.2 Stand-alone operation as an analog probe ........................................................................................ 19
7.3 Stand-alone operation as a digital probe (PC or network) .................................................................. 21
7.4 Connectivity examples for stand-alone probes................................................................................... 21
7.5 Hand-held probes used with an indicator ........................................................................................... 22
8 Maintenance ................................................................................................ ......................................... 23
8.1 Cleaning or replacing the dust filter .................................................................................................... 23
8.2 Periodic calibration check .................................................................................................................. 23
8.3 Validation of the output signals transmission ..................................................................................... 23
9 Firmware updates ................................................................................................................................ 24
10 Technical data ...................................................................................................................................... 25
10.1 Specifications ..................................................................................................................................... 25
10.2 Dew point accuracy ............................................................................................................................ 27
10.3 Effect of cable temperature on the accuracy of probes HC2-C04 and HC2-C05 ............................... 28
11 Accessories and parts ........................................................................................................................ 28
12 Supporting documents ....................................................................................................................... 28
13 Document releases .............................................................................................................................. 29
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
3 of 29
Document title
Applicability:
This manual applies to all HC2 probes with firmware version 1.x, where 1.x can be 1.0, 1.1, etc. 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:
User configurable settings
Calculation of the dew or frost point
Humidity temperature calibration and adjustment
Simulator mode
Automatic humidity sensor test and drift compensation
Sensor failure mode
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.
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
4 of 29
Document title
Climate measurement
For use with indicators, data loggers and transmitters, with or without an extension cable
HC2-S
Humidity measuring range: 0…100 %RH
Temperature limits -50…100 °C (-58…212 °F)
Diameter: 15mm (0.6”), length: 85 mm (3.3”)
Housing and filter cap: polycarbonate, black
Standard dust filter: NSP-PCB-PE (Polyethylene)
Accurate measurements require full immersion in the environment to be measured
Weight: approx. 10 g (0.35 oz)
HC2-S3
Same as HC2-S but with white housing and filter cap for outdoor use
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:
The HC2 probes can be directly connected to a PC or to an Ethernet network using one of the available
digital interface adapters (see Accessories).
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 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.
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
5 of 29
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 2 m (6.5 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 (see Accessories)
Weight: approx. 160 g (5.6 oz)
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: PPS, 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)
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).
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
6 of 29
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
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: aluminum / elox
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)
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
7 of 29
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)
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.
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
8 of 29
Document title
Process measurement (fixed installation)
For use with transmitters and data loggers
HC2-IC102
HC2-IC105
Humidity measuring range: 0…100 %RH
Temperature limits at sensor -100…200 °C (-148…392 °F)
Barrel: diameter: 15 mm (0.6”), length: 100 mm (3.9”). See note below
Probe cable length.: 2 m (6.5 ft) or 5 m (16.4 ft)
Barrel: PPS
Filter base (NSP-ME). Filter cartridge to be ordered separately (see Accessories)
Weight: with 2 m cable approx. 230 g (8.1 oz), + 80 g (2.8 oz) per additional meter
HC2-IC302
HC2-IC305
Same as HC2-IC1xx but with 250 mm barrel length(9.8”) for through wall installation
Weight: with 2 m cable approx. 260 g (9.2 oz), + 80 g (2.8 oz) per additional meter
Process measurement (fixed installation)
For use with transmitters and data loggers
HC2-IC302-A
HC2-IC305-A
Humidity measuring range: 0…100 %RH
Temperature limits at sensor -100…200 °C (-148…392 °F)
Barrel: diameter: 25 / 15 mm (1.0 / 0.6”), length: 250 mm (9.8”)
Probe cable length.: 2 m (6.5 ft) or 5 m (16.4 ft)
Barrel: PPS, black
Filter base (NSP-ME). Filter cartridge to be ordered separately (see Accessories)
Designed for through wall installation
Weight with 2 m cable: approx. 290 g (10.2 oz), + 80 g (2.8 oz) per additional meter
HC2-IC402-A
HC2-IC405-A
Same as HC2-IC3xx-A but with 400 mm barrel length(15.7”)
Weight with 2 m cable: approx. 320 g (11.3 oz), + 80 g (2.8 oz) per additional meter
HC2-IC502-A
HC2-IC505-A
Same as HC2- IC3xx-A but with 550 mm barrel length(21.6”)
Weight with 2 m cable: approx. 350 g (12.3 oz), + 80 g (2.8 oz) per additional meter
HC2-IC702-A
HC2-IC705-A
Same as HC2- IC3xx-A but with 700 mm barrel length(27.5”)
Weight with 2 m cable: approx. 380 g (13.4 oz), + 80 g (2.8 oz) per additional meter
Note: HC2-IC1 (100 mm barrel length) – to avoid measurement errors due to temperature gradients fully
immerse the probe barrel in the environment to be measured
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
E-M-HC2 Probes-V1_21
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroClip 2 (HC2) Humidity Temperature
Probes: User Guide
Instruction Manual
Document Type
Page
9 of 29
Document title
Process measurement (fixed installation)
For use with transmitters and data loggers
HC2-IM102
HC2-IM105
Humidity measuring range: 0…100 %RH
Temperature limits at sensor -100…200 °C (-148…392 °F)
Barrel: diameter: 15 mm (0.6”), length: 120 mm (4.7”). See note below
Probe cable length.: 2 m (6.5 ft) or 5 m (16.4 ft)
Barrel: stainless steel
Filter base (SP-MSB15). Filter cartridge to be ordered separately (see Accessories)
Weight with 2 m cable: approx. 260 g (9.2 oz), + 80 g (2.8 oz) per additional meter
HC2-IM302
HC2-IM305
Same as HC2-IM1xx but with 280 mm barrel length(11.0”) for through wall installation
Weight with 2 m cable: approx. 400 g (14.1 oz), + 80 g (2.8 oz) per additional meter
HC2-IM402
HC2-IM405
Same as HC2-IM1xx but with 430 mm barrel length(16.9”) for through wall installation
Weight with 2 m cable: approx. 540 g (19.0 oz), + 80 g (2.8 oz) per additional meter
HC2-IM502
HC2-IM505
Same as HC2-IM1xx but with 580 mm barrel length(22.8”) for through wall installation
Weight with 2 m cable: approx. 680 g (24.0 oz), + 80 g (2.8 oz) per additional meter
Note: HC2-IM1 (120 mm barrel length) - to avoid measurement errors due to temperature gradients fully
immerse the probe barrel in the environment to be measured
© 2009; Rotronic AG E-M-HC2 Probes-V1_21
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