Bühler technologies Nivotemp NT M-L Series Manual de usuario

Fluidcontrol

Installation and Operation Instructions

Original instructions

Level- and temperature sensor

Nivotemp NT M-L

BE100029

01/2019

Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen

Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20

E-Mail: [email protected]

Internet: www.buehler-technologies.com

Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen

Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20

Internet: www.buehler-technologies.com

E-Mail: [email protected]

Read this instruction carefully prior to installation and/or use. Pay at-

tention particularly to all advises and safety instructions to prevent in-

juries. Bühler Technologies can not be held responsible for misusing

the product or unreliable function due to unauthorised modifications.

Document information

Document No..........................................................BE100029

Version..........................................................................01/2019

Nivotemp NT M-L

Contents

1 Introduction..................................................................................................................................................................................................................... 2

1.1 Intended Use.........................................................................................................................................................................................................2

1.2 Functionality......................................................................................................................................................................................................... 2

1.2.1 Liquid level monitoring ......................................................................................................................................................................2

1.2.2 Temperature monitor .........................................................................................................................................................................2

1.3 Model key............................................................................................................................................................................................................... 2

1.4 Scope of Delivery.................................................................................................................................................................................................. 2

2 Safety instructions......................................................................................................................................................................................................... 3

2.1 Important advice................................................................................................................................................................................................. 3

2.2 General hazard warnings ................................................................................................................................................................................. 3

3 Transport and storage .................................................................................................................................................................................................. 5

4 Setup and connection...................................................................................................................................................................................................6

4.1 Installation ............................................................................................................................................................................................................6

4.2 Electrical connections ........................................................................................................................................................................................6

5 Operation and control .................................................................................................................................................................................................. 7

6 Cleaning and Maintenance.........................................................................................................................................................................................8

7 Service and repair...........................................................................................................................................................................................................9

7.1 Spare parts and accessories .............................................................................................................................................................................9

8 Disposal........................................................................................................................................................................................................................... 10

9 Appendices...................................................................................................................................................................................................................... 11

9.1 Technical Data NT M-L ......................................................................................................................................................................................11

9.2 Standard Pin Assignment NT M-L.................................................................................................................................................................. 11

10 Attached documents....................................................................................................................................................................................................13

iBühler Technologies GmbHBE100029 ◦ 01/2019

Nivotemp NT M-L

1 Introduction

1.1 Intended Use

Level sensors are used to monitor the liquid level and temperature in fluid systems.

Level sensors must not be used in highly flammable or corrosive liquids.

The medium must not contain particles, particularly metallic particles, to prevent deposits on the float or between the float and

switching tube. If necessary, filter the medium.

Please note the technical data in the appendix for the specific intended use, existing material combinations, as well as temper-

ature limits.

WARNING

All device models are solely intended for industrial applications. They are not safety com-

ponents. The devices must not be used if failure or malfunction thereof jeopardises the

safety and health of persons.

Use in explosive areas is prohibited.

1.2 Functionality

1.2.1 Liquid level monitoring

The measuring tube is located inside the tank. The reed-contact is located inside the measuring tube.

Simply put, the reed-contact works the same as a regular resistance potentiometer. The reed-contact consists of a number of

reed switches along with resistors connected in series. The total length of the chain varies by the path being monitored.

If a magnet inside a float trips the reed switch, a resistance signal proportional to the position of the float will be output. When

the float changes positions, resistances are more or less activated and the resistance signal altered based on the position of the

float. The resistance signal is analysed by the built-in electronics and output via the IO-Link interface.

1.2.2 Temperature monitor

The temperature is monitored by a temperature sensor (Pt100) located at the bottom end of the Reed-contact. The temperature

signal is analysed by the built-in electronics and output via the IO-Link interface.

Please note the technical data in the appendix.

1.3 Model key

NT M

M12

Brass

Version

200

280

370

500

600

700

800

900

1000

Model designation

Plug connection

Length (max. 1000 mm)

Measuring mode

LTD Level and temperature measurement

(IO-Link)

---- ----

-LTD ---- ---- ----

G3/4

Connection

Output

1D1S

1.4 Scope of Delivery

– Level sensor

– Product Documentation

– Connection/mounting accessories (optional)

2 Bühler Technologies GmbH BE100029 ◦ 01/2019

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2 Safety instructions

2.1 Important advice

Operation of the device is only valid if:

– the product is used under the conditions described in the installation- and operation instruction, the intended application

according to the type plate and the intended use. In case of unauthorized modifications done by the user Bühler Technolo-

gies GmbH can not be held responsible for any damage,

– when complying with the specifications and markings on the nameplates.

– the performance limits given in the datasheets and in the installation- and operation instruction are obeyed,

– monitoring devices and safety devices are installed properly,

– service and repair is carried out by Bühler Technologies GmbH,

– only original spare parts are used.

This manual is part of the equipment. The manufacturer keeps the right to modify specifications without advanced notice. Keep

this manual for later use.

Signal words for warnings

DANGER

Signal word for an imminent danger with high risk, resulting in severe injuries or death if not avoided.

WARNING

Signal word for a hazardous situation with medium risk, possibly resulting in severe injuries or death if not

avoided.

CAUTION

Signal word for a hazardous situation with low risk, resulting in damaged to the device or the property or

minor or medium injuries if not avoided.

NOTICE

Signal word for important information to the product.

Warning signs

These instructions use the following warning signs:

Warns of a general hazard General information

Warns not to inhale toxic gasses Wear respiratory equipment

Warns of corrosive liquids Wear a safety mask

Warns of explosive areas Wear gloves

2.2 General hazard warnings

The equipment must be installed by a professional familiar with the safety requirements and risks.

Be sure to observe the safety regulations and generally applicable rules of technology relevant for the installation site. Prevent

malfunctions and avoid personal injuries and property damage.

The operator of the system must ensure:

– Safety notices and operating instructions are available and observed,

– The respective national accident prevention regulations are observed,

– The permissible data and operational conditions are maintained,

– Safety guards are used and mandatory maintenance is performed,

– Legal regulations are observed during disposal.

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Maintenance, Repair

Please note during maintenance and repairs:

– Repairs to the unit must be performed by Bühler authorised personnel.

– Only perform conversion-, maintenance or installation work described in these operating and installation instructions.

– Always use genuine spare parts.

Always observe the applicable safety and operating regulations in the respective country of use when performing any type of

maintenance.

The method for cleaning the devices must be adapted to the IP protection class of the devices. Do not use cleaners which could

damage the device materials.

DANGER Toxic, acidic gases/liquids

Protect yourself from toxic, corrosive gasses/liquids when performing any type of work.

Wear appropriate protective equipment.

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Nivotemp NT M-L

3 Transport and storage

Only transport the product inside the original packaging or a suitable alternative.

The equipment must be protected from moisture and heat when not in use. It must be stored in a covered, dry, dust-free room

at room temperature.

5Bühler Technologies GmbHBE100029 ◦ 01/2019

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4 Setup and connection

DANGER Toxic, acidic gases/liquids

Protect yourself from toxic, corrosive gasses/liquids when performing any type of work.

Wear appropriate protective equipment.

4.1 Installation

The level switch comes fully assembled and can be mounted to the tank using the screw-in thread. Please be sure the float can

move freely and to leave enough space between the tank wall and add-ons.

After removing the float, where applicable, be sure the magnet inside the float is above the fluid level. This can easily be verified

with a piece of iron to determine the magnet position inside the float.

4.2 Electrical connections

Electricity is supplied via plug connectors. Please refer to the appendix for installation dimensions, nominal voltage and plug

configuration.

The switching outputs are PNP transistors.

The level- and temperature sensor is powered with 18-30V direct voltage. The sensor connects with a cable and standard M12

plug-in connectors.

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Nivotemp NT M-L

5 Operation and control

NOTICE

The device must not be operated beyond its specifications.

Version with IO-Link interface

This unit is equipped with an IO-Link interface, which require an IO-Link master.

The IO-Link interface allows direct access to process and diagnostics data, and allows configuring the unit during operation.

The IODDs required to configure the unit is available at https://ioddfinder.io-link.com/.

If the IO-Link interface is not being used (no master or only used to parametrise), the level- and temperature sensor functions as

a regular level- and temperature sensor with 2 switching outputs. The default parameters and switching function of the switch-

ing outputs, however, can be parametrised via IO-Link master.

For more information please visit: www.io-link.com

7Bühler Technologies GmbHBE100029 ◦ 01/2019

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6 Cleaning and Maintenance

This device is maintenance-free.

The method for cleaning the devices must be adapted to the IP protection class of the devices. Do not use cleaners which could

damage the device materials.

8 Bühler Technologies GmbH BE100029 ◦ 01/2019

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