ROTRONIC HF5 User Manual

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

Instruction Manual

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HygroFlex HF5

Humidity Temperature Transmitters

User Guide

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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Unit

HygroFlex HF5 Humidity Temperature Transmitters: User Guide

Instruction Manual

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Table of contents

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

2 Mechanical configurations and dimensions ..................................................................................... 4

2.1 Supply voltage up to 40 VDC / 28 VAC ............................................................................................ 4

2.2 Supply voltage 85…240 VAC ........................................................................................................... 5

2.3 Models with USB or Ethernet interface ............................................................................................. 5

3 General description ............................................................................................................................. 6

3.1 Power supply options ....................................................................................................................... 6

3.2 Measured parameters ...................................................................................................................... 6

3.3 Calculated parameters ..................................................................................................................... 6

3.4 Analog output signals ....................................................................................................................... 7

3.5 Digital outputs ................................................................................................................................... 7

3.6 Service connector ............................................................................................................................. 8

3.7 Probe ................................................................................................................................................ 8

3.8 HW4 software version compatibility .................................................................................................. 8

4 User configurable settings and functions ......................................................................................... 8

4.1 Function overview ............................................................................................................................. 8

4.2 Interaction between the HF5 and probe functions .......................................................................... 10

4.3 Analog output signal type (except HF52) ........................................................................................ 11

5 Mechanical installation ..................................................................................................................... 11

5.1 General guidelines .......................................................................................................................... 11

5.2 HF5 enclosure ................................................................................................................................ 12

5.3 Installation of the HF5 type D (through wall mount) ........................................................................ 12

5.4 Installation of the HF5 type W (surface mount)............................................................................... 12

6 Electrical installation ........................................................................................................................ 13

6.1 General wiring guidelines ............................................................................................................... 13

6.2 Guidelines for RS-485 wiring .......................................................................................................... 14

6.3 Cable grip and cable specifications ................................................................................................ 14

6.4 Wiring ............................................................................................................................................. 15

7 Operation ........................................................................................................................................... 27

7.1 HF5 analog outputs ................................................................ ........................................................ 27

7.2 HF5 digital outputs .......................................................................................................................... 27

7.3 Display and keypad option ............................................................................................................. 28

7.4 Internal menu (optional keypad and display) .................................................................................. 28

7.5 Displayed parameters (optional keypad and display) ..................................................................... 30

8 Maintenance....................................................................................................................................... 30

8.1 Service cable .................................................................................................................................. 30

8.2 Location of the service connector (mini USB type) ......................................................................... 30

8.3 Periodic calibration check of the probe ........................................................................................... 31

8.4 Cleaning or replacing the probe dust filter ...................................................................................... 32

8.5 Validation of the output signals transmission .................................................................................. 32

9 Firmware updates .............................................................................................................................. 32

10 Technical data ................................................................................................................................... 33

10.1 Specifications ................................................................................................................................. 33

10.2 Dew point accuracy ........................................................................................................................ 35

11 Accessories ....................................................................................................................................... 35

12 Supporting documents ..................................................................................................................... 35

13 Document releases ........................................................................................................................... 36

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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Unit

HygroFlex HF5 Humidity Temperature Transmitters: User Guide

Instruction Manual

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Applicability:

This manual applies to the following HF5 series transmitters:

2-wire loop powered models (HF52) with firmware version 1.6 All other models with firmware version 2.x, where 2.x can be 2.0, 2.1, etc.

Changes to the last digit of the version number reflect minor firmware changes that do not affect the manner in which the instrument should be operated.

1 Overview

The HygroFlex HF5 transmitter series is designed for fixed installation in applications where high measurement accuracy is required and can be used with any of the HygroClip 2 plug-in probes.

The wide assortment of HygroClip 2 humidity-temperature probes can meet almost any application requirement. The HygroClip 2 probes feature well proven, durable sensors. Digital signal processing within the probe ensures consistent product performance and also facilitates the task of field maintenance with features such as potentiometer-free calibration, hot-swapping of the probe, etc.

Main features of the HF5 series:

Interchangeable, plug-in HygroClip 2 probe (sold separately) Probe separation: up to 5 m / 16.4 ft (100 m / 330 ft with a digital signal booster) Relative humidity, temperature, dew point or other psychrometric parameter

0...100%RH and -100 to 200°C (-148 to 392°F) - depending on probe model Accuracy: ± 0.8%RH and 0.1ºC / 0.2ºF Analog outputs only, analog and digital outputs combined or digital outputs only User configurable settings Calculation of psychrometric parameters such as the dew or frost point Humidity temperature calibration and adjustment Simulator mode Automatic humidity sensor test and drift compensation Sensor failure mode Data recording

1) Except model HF52 (2-wire circuit type) The ability for the user to easily update both the HF5 and HygroClip 2 probe firmware means that instruments

of the HF5 series can be kept up-to-date regarding any future functionality improvement.

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

Instruction Manual

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Probe

connector

Probe

connector

NOTE: Vertical mounting applies only to:

HF52 type D without keypad and display HF53 and HF54 type D without keypad and

display or without digital option

All other models are mounted horizontally

2 Mechanical configurations and dimensions

Depending on the supply voltage, the HF5 uses two different sizes of enclosure

2.1 Supply voltage up to 40 VDC / 28 VAC

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

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Probe

connector

Probe

connector

USB or Ethernet interface

2.2 Supply voltage 85…240 VAC

2.3 Models with USB or Ethernet interface

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

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3 General description

3.1 Power supply options

Depending on the circuit type, the HF5 requires the following power supply: a) HF52 (2-wire loop powered, analog outputs): 10…28 VDC - depending on the load connected to the

output(s). The minimum supply voltage can be determined as follows: V min = 10 V + (0.02 x Load*) *Load resistance in ohms. For the maximum load of 500 , the minimum supply voltage is 10 + (0.02 x 500) = 20 VDC. With both

output circuits closed, the maximum current consumption is 40 mA.

b) HF53, HF54 and HF56 (3-wire, analog outputs optionally combined with a digital output):

- HF53: 15 to 40 VDC or 12 to 28 VAC

- HF54: 9 to 36 VDC or 7 to 24 VAC, galvanic isolation of the analog outputs and power supply

- HF56: 85…240 VAC, galvanic isolation of the analog outputs and power supply HF53 and HF54: with both output circuits closed, the typical current consumption is 100 mA.

HF56: typical current consumption <50 mA at 85 VAC and <35 mA at 240 VAC Please verify the product identification label to determine which power supply option is installed on your

transmitter.

c) HF556, HF557 and HF566 (digital output only):

- HF556: 5 to 40 VDC or 12 to 28 VAC

- HF557: PoE (power over Ethernet).The HF557 is not available with a RS-485 interface and can be powered only via a LAN.

- HF566: 85…240 VAC Typical current consumption HF556 with USB interface : 100 mA

HF556 with Ethernet (TCP/IP) interface and HF557 : 300 mA HF566 USB interface : <50 mA at 85 VAC and <35 mA at 240 VAC HF566 with Ethernet (TCP/IP) interface : <50 mA at 85 VAC and <35 mA at 240 VAC

3.2 Measured parameters

The HygroClip 2 probe used with the HF5 transmitter 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 HF5 can be configured by the user to calculate one of the following parameters:

o Dew point (Dp) above and below freezing o Frost point (Fp) below freezing and dew point above freezing o Wet bulb temperature (Tw) o Enthalpy (H) o Vapor concentration (Dv) o Specific humidity (Q)

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

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o Mixing ratio by weight (R) o Vapor concentration at saturation (Dvs) o Vapor partial pressure (E) o Vapor saturation pressure (Ew)

Note: some of the above parameters depend on the value of the barometric pressure. Using the ROTRONIC HW4 software, a fixed barometric pressure value can be specified. For instructions see the following HW4 manual: E-M-HW4v3-F2-005

3.4 Analog output signals

Parameter:

With the ROTRONIC HW4 software any of the two analog output signals can be made to correspond to one of the following:

Relative humidity Temperature Calculated parameter

Any output can also be disabled.

Output Scale:

The scale of each analog output can be set within the numerical limits of -999.99 and 9999.99. The D/A converters used to generate the analog output signals feature a 16-bit resolution.

Signal Type:

Both analog outputs provide the same type of signal. With the exception of the HF52 (always 4…20 mA), the type of signal can be selected with the ROTRONIC HW4 software to any of the following:

0…20 mA, 4…20 mA, 0…1V, 0…5V or 0…10V (see 4.3).

3.5 Digital outputs

Models with a digital output can simultaneously transmit 3 parameters: relative humidity, temperature and calculated parameter

a) RS-485 serial interface

Some models of the HF5 are equipped with a RS-485 serial interface. This can be used to connect together up to 64 devices in a multi-dropped arrangement. In principle, an unlimited number of such networks can be monitored with the HW4 software, but each RS-485 multi-drop network is limited to 64 devices. The HF5 can be used either as a slave or a master, without special configuration. The master is automatically the device that is directly connected to a PC by means of a USB port or Ethernet (TCP/IP) port.

RS-485 Compatibility: The communication protocol used by the HF5 and other AirChip 3000 products is not compatible with the protocol used by the previous generation of ROTRONIC instruments. Do not connect legacy products and AirChip 3000 products to the same RS-485 multi-drop network.

b) USB or Ethernet interface

Some models of the HF5 are available with a USB or Ethernet interface in addition to the RS-485 interface. In this case the protection grade of the HF5 enclosure is no longer IP65 / NEMA 4 rated.

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

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MEASUREMENT ACCURACY AND RELIABILITY (PROBE FUNCTIONS)

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 or with the instrument display (if available) and is shown as Good, SQ-tuned (corrected for drift) or Bad (defective)

Not available when the probe is connected to a HF52

3.6 Service connector

The service connector is a UART digital interface (Universal Asynchronous Receiver Transmitter) with a miniUSB type connector. This allows connecting the HF5 with a service cable to a PC running the ROTRONIC HW4 software. See “Maintenance” for the location of the service connector and for the type of service cable to be used. The service connector is used to configure the HF5 and to and update its firmware with the HW4 software.

Note: any digital output (USB, Ethernet and RS-485) offers the same functionality as the service connector.

3.7 Probe

The HF5 is compatible with all available models of HygroClip 2 probes. For detailed information on the probes see document E-M-HC2 Probes-V1.

3.8 HW4 software version compatibility

The HF5 version 2 requires HW4 version 3.0.0 or higher for full functionality of the Device Manager function.

4 User configurable settings and functions

The HF5 ships configured as specified on the customer order. Models with analog outputs only can be installed and used just as any conventional humidity and temperature transmitter and most users will never need to use the HF5 configurable settings and functions. Models with a digital output generally require some configuration by the user.

Making use of the HF5 and 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 HF5 and probe functions and also indicated the factory default settings.

4.1 Function overview

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

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MEASUREMENT ACCURACY AND RELIABILITY (PROBE FUNCTIONS)

► 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. The data recording function can be use 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 device is powered off, the recording session is

paused but not ended As long as the recording session has not been ended, the device 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

Not available when the probe is connected to a HF52

MEASUREMENT LOOP VALIDATION

Functions

Description

► Simulator mode

Used to make the HF5 generate fixed values for the humidity, temperature and calculated parameter. Can be configured, enabled or disabled

DEVICE SAFEGUARDS

Functions

Description

► Device write protection

Used to protect the HF5 with a password to prevent unauthorized digital access by a digital user. Can be configured, enabled or disabled

► Internal menu access from keypad

Used to prevent accidental changes to the HF5 settings and temperature-humidity adjustment by disabling the MENU key on the optional keypad. Can be enabled or disabled

PROCESS PROTECTION AND PROTECTION OF OTHER DEVICES

AirChip 3000 Functions

Description

► Limit humidity output to 100 %RH

This probe function is 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 which can be also be seen on the optional display

► Bad sensor alarm

This is a built-in probe function. Cannot be disabled A bad humidity or temperature sensor triggers a digital alarm

which can be also be seen on the optional HF5 display provided that the HF5 is set to monitor probe alarms

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

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PROCESS PROTECTION AND PROTECTION OF OTHER DEVICES

► Fail safe mode

Used to specify a "safe" fixed value for humidity and for temperature (HF5 or probe) in the event of:

o Loss of communication with the probe (HF5 function) o Sensor failure (probe function)

Can be configured, enabled or disabled

Function / Setting

HF5

HC2

Notes

Device protection

Individual to the HF5 and HC2 probe

RS-485 address

Individual to the HF5 and HC2 probe

Device Name

User defined description The device name of the HC2 probe is not displayed by HW4 and is replaced with the HF5 Input Name

Calculation

Psychrometric calculation HF5 setting overrides HC2 probe setting

Data refresh rate

This setting has no effect on the HF5 and probe. Depending on the model, the data refresh rate is as follows:

HF52: typically 5 s Other models: typically 1 s

Simulator function

Generates fixed humidity and / or temperature value When enabled, the HF5 settings override the HC2 probe settings

Unit system

The HF5 setting overrides HC2 probe setting regarding the HF5 signals. The HC2 probe settings still apply when the probe is used alone

Make sure to use the same humidity symbol and the same temperature unit for both the HF5 and probe.

4.2 Interaction between the HF5 and probe functions

It is important to note that when used together, the HF5 transmitter and HC2 probe (HygroClip 2) constitute a 2-component system. Each system component has its own microprocessor, firmware and functions. Some of these functions are unique to each system component. Other functions are found in both components.

HF52 (2-wire, loop powered transmitter): due to the necessity of limiting the current consumption of the combination of HF52 and HC2 probe to less than 4 mA, several probe functions such as RH sensor test, data recording and probe adjustment are not available with the HF52.

The functions and settings of the HF5 transmitter and HygroClip 2 probe (HC2) operate together as indicated below:

E-M-HF5-V2_12

Rotronic AG Bassersdorf, Switzerland

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HygroFlex HF5 Humidity Temperature Transmitters: User Guide

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Function / Setting

HF5

HC2

Notes

Out-of-limits value alarm

The HF5 settings are independent from the HC2 probe settings. The HC2 probe settings have an effect only when the HF5 is

enabled to monitor alarms generated by the probe When out-of-limit values have been defined for the same parameter

for both the HF5 and probe, any alarm is triggered based on the narrowest set of limits (assuming that the HF5 has been set to monitor probe alarms).

Analog outputs

Parameter and scale The HC2 probe settings have no effect on the HF5

4.3 Analog output signal type (except HF52)

Both analog outputs of the HF5 provide the same type of signal. With the exception of the HF52 (always

4…20 mA), the type of signal can be selected with the ROTRONIC HW4 software to any of the following:

0…20 mA, 4…20 mA, 0…1V, 0…5V or 0…10V. To select the analog signal type proceed as follows:

Use the appropriate model of service cable (see Maintenance > Service Cable) to connect the

service connector of the HF5 to a USB port of a PC with the HW4 software installed (HW4 3.0.0 or higher). Note that the ROTRONIC USB driver must be installed on the PC as explained in the HW4 manual E-M-HW4v3-Main

Start HW4 on the PC and search for the HF5 (HW4 Main Menu Bar > Devices and Groups > Search

for USB Masters).

After finding the HF5 with HW4, expand the device tree to see the HF5 functions. Select Device

Manager.

For further instructions see HW4 manual E-M-HW4v3-F2-005

No adjustment is required after changing the type of output signal.

5 Mechanical installation

5.1 General guidelines

Relative humidity is extremely dependent on temperature. Proper measurement of relative humidity requires that the probe and its sensors be at exactly the temperature of the environment to be measured. Because of this, the location where you choose to install the probe can have a significant effect on the performance of the instrument. The following guidelines should guarantee good instrument performance:

a) Select a representative location: install the probe where humidity, temperature and pressure

conditions are representative of the environment to be measured.

b) Provide good air movement at the probe: air velocity of at least 200 ft/ minute (1 meter/second)

facilitates adaptation of the probe to changing temperature.

c) Avoid the following: (1) Close proximity of the probe to a heating element, a cooling coil, a cold or

hot wall, direct exposure to sun rays, etc. (2) Close proximity of the probe to a steam injector,

humidifier, direct exposure to precipitation, etc. (3) Unstable pressure conditions resulting from excessive air turbulence.

d) Immerse as much of the probe as possible in the environment to be measured.

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ROTRONIC HF5 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual