HK Instruments KLU 100 Bedienungsanleitung

KLU 100 OUTDOOR HUMIDITY TRANSMITTER

USER GUIDE

Published: 10.03.2023 2 (11)

Contents

1 Introduction........................................................................................................... 3

1.1 About this user guide.....................................................................................................................................3

1.2 Intended use...................................................................................................................................................3

2 Description of the product.................................................................................. 4

2.1 Overview of the main parts............................................................................................................................4

2.2 Technical specifications..................................................................................................................................4

2.3 Dimensions..................................................................................................................................................... 5

3 Safety precautions................................................................................................6

4 Commissioning..................................................................................................... 7

4.1 Mounting the product......................................................................................................................................7

4.2 Opening the cover..........................................................................................................................................8

4.3 Selecting the output mode.............................................................................................................................8

4.4 Wiring..............................................................................................................................................................8

4.5 Setting the display mode (KLU 100-N only).................................................................................................. 9

5 Disposal...............................................................................................................10

6 Warranty policy...................................................................................................11

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 3 (11)

1 Introduction

Thank you for choosing a KLU 100 outdoor humidity transmitter. It is a relative humidity transmitter that can be used

in subzero temperatures. It has one humidity and one temperature output. You can select the output mode of each

output on the field during commissioning.

KLU 100 has high-quality sensors that provide long-term stability and wide measurement range for humidity (0…100

%rH) and temperature (-50...50 °C).

The optional display switches between humidity and temperature display modes by default. During commissioning,

you can set the display to show either humidity or temperature.

1.1 About this user guide

This user guide contains important information about the installation, wiring, configuration and use of the product.

Read this guide carefully before you install the product, connect the wires, or operate the product. Make sure that you

fully understand all instructions before you start work. If you are not sure what the instructions mean, contact the seller

or the manufacturer.

Follow all instructions in this user guide carefully. Always obey the applicable local rules and regulations.

The original instructions were written in English. If there are differences between the English instructions and the

translations, refer to the English instructions.

If you find a mistake in the English instructions or in the translations, please send the details to the manufacturer.

1.2 Intended use

The KLU 100 outdoor humidity transmitter is intended to be used to measure relative air humidity and temperature in

factories, warehouses and other buildings. The product lifetime decreases if the environment is very cold (e.g. freezer

rooms) or the air contains chemicals (e.g. chlorine at spas and indoor swimming pools).

These transmitters are intended to be connected to building automation systems in the HVAC/R industry.

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 4 (11)

2 Description of the product

This section introduces the main parts of the product and contains the technical specifications.

2.1 Overview of the main parts

1 Front cover 2 Lug for a fixing screw

3 Sintered plastic filter protecting the sensors 4 Slot for opening the cover

5 Display (KLU 100-N only) 6 Cable gland

2.2 Technical specifications

Property Value

Supply 24 Vac/dc (15…28 V) < 1 VA

Humidity measurement

Range 0…100 %rH

Accuracy (25 °C) ±2 %rH (0…90 %rH)

Temperature measurement

Range -50...50 °C

Accuracy (0 °C) ±0.5 °C

Outputs

Humidity 0...10 Vdc, 2 mA / 4…20 mA < 600 ohm

Temperature 0...10 Vdc, 2 mA / 4…20 mA < 600 ohm

Outputs with 15…18Vdc supply 4…20 mA < 375…525 ohm (+Vdc-7.5V)/20 mA

Sensors

Humidity capacitive

Temperature NTC10

Operating conditions

Temperature -50...50 °C

Long term stability ±5 %rH / 2 years

IP protection class

Housing IP54, cable entry downwards

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 5 (11)

Property Value

Sensor IP5X

Wire 0.2...1.5 mm2(16-24 AWG)

Cable gland M16

Dimensions (w x h x d) 106 x 113 x 46 mm

Weight 145 g

Materials

Housing PC

Cover PC

Conformance CE UKCA

EMC 2014/30/EU S.I. 2016 No. 1091

RoHS 2011/65/EU S.I. 2012 No. 3032

2.3 Dimensions

All dimensions are in millimeters (mm).

106

Ø4.5

113

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 6 (11)

3 Safety precautions

The product is developed, manufactured and tested according to high quality standards. However, instructions for

safe use shall be taken account when installing, using or disposing the product or parts of product.

Read this user guide carefully before commissioning, using or servicing this device. To avoid any kind of damage to

people or property, follow the instructions carefully. HK Instruments is not liable for any hazards or damages to people

or property which are caused by ignoring the using or installation instructions.

To avoid electrical shock or damage to equipment, disconnect power before installing or servicing the product. Use

only a proper wiring rated for the full operating voltage and maximum current in the system even in the event of a

fault.

To avoid potential fire and/or explosion, do not use the product in potentially flammable or explosive atmosphere.

The product condition must be checked before installation. Do not drop the product or use excessive force during

installation. Do not use the product if any damages are visible.

After installation the product will be part of a system whose specifications and performance characteristics are not

designed or controlled by HK Instruments. Refer to national and local authorities to ensure that the installation is

functional and safe.

The product should only be used in professionally designed applications. Unauthorised modifications are not allowed.

The product must not be used in relation with any equipment that in case of a failure may threaten, directly or

indirectly, human health or life or result in danger to human beings, animals or property.

In this document, there are different kind of warnings and notes. The warning and note types are defined in the

following table.

Sign Description

WARNING: The warning symbol indicates a potentially hazardous situation which, if not avoided, could result

in death or serious injury.

CAUTION: The caution symbol indicates a potentially hazardous situation which, if not avoided, could result

in minor or moderate injury.

Important: The important symbol indicates a potentially hazardous situation which, if not avoided, could

result in damage to the device or property.

Note: The note symbol indicates a useful tip or a recommended way to complete a task. These notes

also provide information that is useful but not critical to the user.

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 7 (11)

4 Commissioning

4.1 Mounting the product

WARNING: Handle the product with care. Dropping the product may cause internal damage and unwanted

functions in the connected system.

CAUTION: Place the product outside the reach of children and animals.

Important: The product may only be installed in a location where the ambient conditions meet the operating

condition requirements.

Operating conditions

Temperature -50...50 °C

Select a mounting position that has good ventilation. To receive accurate readings, do not mount the device in the

following positions:

• Direct sunlight

• Adjacent to doors or other drafty positions

• Adjacent to heat sources

• Adjacent to concealed pipes or chimneys

This device is usually mounted inside a building. If you mount the device to an outer wall of a building, select the

mounting position carefully.

1. Check that the product is not damaged during transportation.

2. Select the mounting position.

3. Mount the product on a flat surface using the mounting points (A).

a. Select the mounting screws according to the mounting surface. The maximum screw diameter is 4.5 mm.

b. Make sure that the cable gland (B) points down.

c. Mount the product in a horizontal position with the screws.

A. Mounting point

B. Cable gland

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 8 (11)

Figure 1: Mounting orientation

4.2 Opening the cover

If the device has a display, be very careful when you open the cover. The display board is connected to the circuit

board with a cable.

1. Put the tip of a flat-head screwdriver into the slot on the cover.

2. Hold the cover and push the screwdriver handle towards the device to open the cover.

4.3 Selecting the output mode

The device has two jumpers for output mode selection on the circuit board. Select the voltage or the current output

mode based on the system requirements. Set the jumpers in the correct position to select the output mode for

humidity and temperature.

Table 1: Jumper settings for output voltage/current mode selection

Output 0...10 Vdc (factory setting) 4...20 mA

Humidity output OUT1

Temperature output OUT2

4.4 Wiring

CAUTION: Device wiring and commissioning can only be carried out by qualified professionals. Always make

the wirings while the power is switched off.

Route the cables through the cable gland. Then connect the wires according to the figure below.

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 9 (11)

24V 24 Vac/dc, < 1 VA supply

0V 0 V

Out1 Output 1: humidity output (%rH), 0...10 Vdc, 2 mA / 4…20 mA

Out2 Output 2: temperature output (°C), 0...10 Vdc, 2 mA / 4…20 mA

4.5 Setting the display mode (KLU 100-N only)

In KLU 100-N humidity transmitter, the display switches between humidity and temperature by default. If you want the

device to show only temperature or humidity on the display, set the display mode as follows:

1. Make sure that the wires are correctly connected.

2. Switch the power on.

3. Find the jumper behind the display.

Scanning

Current

DPM 7

4. Wait until the display shows the measurement you want to select.

5. Remove the jumper (C). The display shows either humidity or temperature depending on the measurement it

showed when you removed the jumper.

6. Align the cover with the housing and press the cover until it clicks closed.

Information is subject to change without prior notice. EN - 90021132250ug

Published: 10.03.2023 10 (11)

5 Disposal

The device is considered as electrical and electronic equipment for disposal in terms of the applicable European

Directive. At the end of life the product must enter the recycling system at an appropriate collection point.

• The device must be disposed through channels provided for this purpose.

• The disposal must be completed according to the local and currently applicable laws and regulations.

Generally all metals can be recycled as material. Plastics and cardboard packaging material can be used in energy

recovery. Printed circuit boards need selective treatment according to IEC 62635 guidelines. To aid recycling, plastic

parts are marked with an appropriate identification code. Contact your local HK Instruments distributor for further

information on environmental aspects and recycling instructions for professional recyclers.

Information is subject to change without prior notice. EN - 90021132250ug

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