WIKA TR75 Bedienungsanleitung

ES

FR

DE

EN

Operating instructions

Betriebsanleitung

Mode d'emploi

Manual de instrucciones

Resistance thermometers with digital display

Model TR75, battery powered

Widerstandsthermometer mit digitaler Anzeige

Typ TR75, Batteriebetrieb

Sondes à résistance avec achage numérique

Type TR75, fonctionnement sur pile

Termorresistencia con indicación digital

Modelo TR75, alimentación por batería

DiwiTherm

®

model TR75

DiwiTherm

®

2

WIKA operating instructions DiwiTherm

®

, model TR75

11325232.05 09/2016 EN/DE/FR/ES

ES

FR

DE

EN

Operating instructions model TR75 Page 3 - 24

Betriebsanleitung Typ TR75 Seite 25 - 44

Mode d'emploi type TR75 Page 45 - 66

Manual de instrucciones modelo TR75 Página 67 - 86

WIKA

®

is a registered trademark in various countries.

WIKA

®

ist eine geschützte Marke in verschiedenen Ländern.

Prior to starting any work, read the operating instructions!

Keep for later use!

Vor Beginn aller Arbeiten Betriebsanleitung lesen!

Zum späteren Gebrauch aufbewahren!

Lire le mode d'emploi avant de commencer toute opération !

A conserver pour une utilisation ultérieure !

¡Leer el manual de instrucciones antes de comenzar cualquier trabajo!

¡Guardar el manual para una eventual consulta!

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WIKA operating instructions DiwiTherm

®

, model TR75 3

EN

Contents

1. General information 4

2. Safety 5

3. Specications 7

4. Design and function 8

5. Transport, packaging and storage 15

6. Commissioning, operation 16

7. Maintenance and cleaning 19

8. Faults 20

9. Dismounting, return and disposal 21

Appendix: EU declaration of conformity 23

Declarations of conformity can be found online at www.wika.com.

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4 WIKA operating instructions DiwiTherm

®

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EN

1. General information

■

The instrument described in the operating instructions has been designed and

manufactured using state-of-the-art technology. All components are subject to stringent

quality and environmental criteria during production. Our management systems are

certied to ISO 9001 and ISO 14001.

■

These operating instructions contain important information on handling the instrument.

Working safely requires that all safety instructions and work instructions are observed.

■

Observe the relevant local accident prevention regulations and general safety regulations

for the instrument's range of use.

■

The operating instructions are part of the product and must be kept in the immediate

vicinity of the instrument and readily accessible to skilled personnel at any time.

■

Skilled personnel must have carefully read and understood the operating instructions

prior to beginning any work.

■

The manufacturer's liability is void in the case of any damage caused by using the

product contrary to its intended use, non-compliance with these operating instructions,

assignment of insuciently qualied skilled personnel or unauthorised modications to

the instrument.

■

The general terms and conditions contained in the sales documentation shall apply.

■

Subject to technical modications.

■

Further information:

- Internet address: www.wika.de / www.wika.com

- Relevant data sheet: TE 60.75

- Application consultant:

Tel.: +49 9372 132-0

Fax: +49 9372 132-406

info@wika.com

Explanation of symbols

WARNING!

... indicates a potentially dangerous situation that can result in serious injury or

death, if not avoided.

CAUTION!

... indicates a potentially dangerous situation that can result in light injuries or

damage to equipment or the environment, if not avoided.

Information

... points out useful tips, recommendations and information for ecient and

trouble-free operation.

1. General information

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WIKA operating instructions DiwiTherm

®

, model TR75 5

EN

2. Safety

WARNING!

Before installation, commissioning and operation, ensure that the appropriate

thermometer has been selected in terms of measuring range, design and

specic measuring conditions.

Non-observance can result in serious injury and/or damage to the equipment.

Further important safety instructions can be found in the individual chapters of

these operating instructions.

2.1 Intended use

The DiwiTherm

®

thermometer is used mainly in the process industry to monitor process

temperatures.

The instrument has been designed and built solely for the intended use described here, and

may only be used accordingly.

The technical specications contained in these operating instructions must be observed.

Improper handling or operation of the instrument outside of its technical specications

requires the instrument to be taken out of service immediately and inspected by an

authorised WIKA service engineer.

If the instrument is transported from a cold into a warm environment, the formation of

condensation may result in instrument malfunction. Before putting it back into operation, wait

for the instrument temperature and the room temperature to equalise.

The manufacturer shall not be liable for claims of any type based on operation contrary to

the intended use.

2.2 Personnel qualication

WARNING!

Risk of injury should qualication be insucient!

Improper handling can result in considerable injury and damage to equipment.

■

The activities described in this operating instruction may only be carried out

by skilled personnel who have the qualications described below.

Skilled personnel

Skilled personnel are understood to be personnel who, based on their technical training,

knowledge of measurement and control technology and on their experience and knowledge

of country-specic regulations, current standards and directives, are capable of carrying out

the work described and independently recognising potential hazards.

Special operating conditions require further appropriate knowledge, e.g. of aggressive

media.

2. Safety

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®

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EN

2.3 Special hazards

WARNING!

For hazardous media such as oxygen, acetylene, ammable or toxic gases or

liquids, and refrigeration plants, compressors, etc., in addition to all standard

regulations, the appropriate existing codes or regulations must also be followed.

WARNING!

To ensure safe working on the instrument, the operating company must ensure

■

that suitable rst-aid equipment is available and aid is provided whenever

required.

■

that the operating personnel are regularly instructed in all topics regarding

work safety, rst aid and environmental protection and know the operating

instructions and, in particular, the safety instructions contained therein.

WARNING!

Residual media in dismounted instruments can result in a risk to persons, the

environment and equipment. Take sucient precautionary measures.

Do not use this instrument in safety or emergency stop devices. Incorrect use of

the instrument can result in injury.

Should a failure occur, aggressive media with extremely high temperature and

under high pressure or vacuum may be present at the instrument.

2.4 Labelling, safety marks

Product label

2. Safety









Model



Serial number



Year of manufacture



Application range

Before mounting and commissioning the instrument, ensure you read the

operating instructions!



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WIKA operating instructions DiwiTherm

®

, model TR75 7

EN

3. Specications

Resistance thermometer with digital display, model TR75

Measuring ranges -40.0 ... +199.9 °C / +200 ... +450 °C

with automatic measuring range changeover (autorange)

Display

■

Principle

■

Resolution

■

Accuracy

3 ½- digit LCD, 7-segment display, 21 mm high

0.1 K up to 199.9 °C; 1 K from 200 °C

0.5 % of the respective full-range value ±1 digit

Sensor Pt1000

Instrument variants

■

DiwiTherm

®

with sensor

for insertion

Sensor with connection cable

Max. working temperature 200 °C

Case for panel mounting, with panel mounting ange

■

DiwiTherm

®

for mounting

in a thermowell

Spring-loaded sensor

Screwed plug to thermowell

Case with neck tube

Option: Adjustable stem and dial (rotatable through 360° and tiltable

through 90°)

■

DiwiTherm

®

for mounting

on a pipe surface

Contact bulb for xing with tightening strap

Max. working temperature 200 °C

Case with neck tube

Option: Adjustable stem and dial (rotatable through 360° and tiltable

through 90°)

Case for panel mounting, with connection cable and panel

mounting ange

Power supply U

B

DC 3.6 V from 3.6 V lithium battery, AA size (Mignon), included in

delivery

1)

Operating time min. 10 years

Special features If the battery drops below 2.7 V, the display switches into “LO” mode

1) Not replaceable by the customer.

Case

Nominal size 100

Material Stainless steel

Bezel ring Bayonet ring

Window Instrument glass

Ingress protection IP65 per IEC/EN 60529

Weight approx. 1 kg (actual weight depends on design and possibly moun-

ted thermowell)

3. Specications

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®

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EN

Ambient conditions

Ambient and storage temperature -20 ... +60 °C

Vibration resistance (at sensor) 10 ... 500 Hz, 5 g, IEC/EN 60068-2-6

Shock resistance (at sensor) IEC/EN 60068-2-7

For further specications see WIKA data sheet TE 60.75 and the order documentation.

4. Design and function

4.1 Description

The DiwiTherm

®

model TR75 is the ideal combination of a digital display and a resistance

thermometer. This compact thermometer can be used in a wide range of applications and

works without an external power supply.

A wide variety of possibilities for the combination of insertion length, neck length, connection

to thermowell etc. are available for the thermometers, suitable for any thermowell and any

application.

Operation without thermowell is only recommended in certain applications.

Optionally, the DiwiTherm

®

model TR75 can be manufactured with a process connection for

measuring the temperature on a pipe's surface.

4.1.1 DiwiTherm

®

with sensor for insertion

Sensor

Material: stainless steel

Sensor length A ≤ 150 mm: Rigid sensor tube

The tubular design features a rigid construction to the metal sensor tip; therefore tubular

designs must not be bent. Internally, the measuring resistor is connected directly to an

insulated lead. Therefore tubular-design resistance thermometers can only be used up to the

temperatures specied for the lead (see operating temperatures).

Sensor length above 150 mm: Sheathed measuring cable (MI cable)

The junction between the metal part of the sensor and the connecting cable, when using MI

cable, is either crimped, rolled or potted, depending on the design. This area should not be

immersed within the process and must not be bent.

Compression ttings should not be attached to the transition. The type and dimensions of

the transition depend largely on the combination between input leads and metal sensor and

the sealing requirements.

The sensor diameter should be approx. 1 mm smaller than the bore diameter of the

thermowell or the blind bore, respectively.

3. Specications / 4. Design and function

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WIKA operating instructions DiwiTherm

®

, model TR75 9

EN

Gaps of more than 0.5 mm between thermowell and the sensor will have a negative eect on

the heat transfer, and they will result in unfavourable response behaviour of the thermometer.

Sensor lengths

Sensor diameter in mm Standard sensor lengths A (l

1

) in mm

6 50 100 150

8 - 100 150

Special lengths are possible.

Process connection

A compression tting enables simple, on-site adjustment to the required insertion length.

Compression tting

Material: stainless steel

G ¼ B male thread (not with Ø 8 mm sensors) or G ½ B

Delivery also possible without process connection.

Cable

Silicone, shielded, application range -40 ... +200 °C with EMC cable gland

Cable length to customer specication.

The sensor sleeve and case are connected by the cable shielding. Earthing on both ends

can lead to potential losses and indication inaccuracy.

3165575.06

Panel mounting

ange

DiwiTherm

®

battery operation, model TR75 with sensor for insertion, rear cable entry,

with panel mounting ange

Legend:

Ø d Sensor diameter

A Insertion length

W Cable length

Tubular design

Sheathed cable design

MI cable ∅ = sleeve ∅

4. Design and function

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10 WIKA operating instructions DiwiTherm

®

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EN

4.1.2 DiwiTherm

®

for mounting in a thermowell

Sensor

Material: stainless steel

The sensor is made from vibration-resistant, sheathed cable (MI cable).

The sensor diameter should be approx. 1 mm smaller than the bore diameter of the

thermowell. Gaps of more than 0.5 mm between thermowell and the sensor will have a

negative eect on the heat transfer, and they will result in unfavourable response behaviour

of the thermometer.

When tting the measuring insert into a thermowell, it is very important to determine the

correct insertion length (= thermowell length for bottom thicknesses of ≤ 5.5 mm). In order to

ensure that the sensor is rmly pressed down onto the bottom of the thermowell, the sensor

must be spring-loaded (spring travel: max 10 mm).

Process connection (standard process connection)

Material: stainless steel

Threaded connection: G ½ B

M14 x 1.5

M18 x 1.5

½ NPT

Union nut: G ½ B

Male nut: G ½ B

Neck tube

Material: stainless steel

Neck tube diameter: 12 mm

Standard neck length: 150 mm

others on request

(minimum neck length: 30 mm)

Sensor lengths

Sensor Ø

in mm

Standard insertion lengths A (l

1

) in mm

3 110 140 145 170 200 205 230 245 260 294 305 345 350 395 410 445 545

6 - - - 170 200 205 230 245 260 295 305 345 350 395 410 445 545

8 - - - - 200 205 230 245 260 295 305 345 350 395 410 445 545

Special lengths are possible.

4. Design and function

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WIKA operating instructions DiwiTherm

®

, model TR75 11

EN

4. Design and function

Thread

Fixed threaded

connections / threads

Connection to thermowell (with neck tube)

Compression tting

(xing to neck tube)

Union nut

Neck tube

smooth

3172503.08

Legend:

Ø d Sensor diameter

A (l

1

) Insertion length

(with parallel threads)

A (U

2

) Insertion length

(with tapered threads)

N(M

H

) Neck length

Connection to thermowell

Male nut for

sealing case

Double nipple version

“nipple-union-nipple”

neck tube

Female

thread

M24 x 1.5

Thread Thread Thread

11363533.04

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12 WIKA operating instructions DiwiTherm

®

, model TR75

EN

3161218.06 3161374.06

Ø 8 mm variant

DiwiTherm

®

model TR75 for mounting in a thermowell, with neck tube

Connection from housing to neck tube: xed, lower mount

Thread

Ø 8 mm variant

Thread

DiwiTherm

®

model TR75 for mounting in a thermowell, with neck tube

Connection from housing to neck tube: adjustable stem and dial,

rear mount, centric

4. Design and function

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®

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EN

4.1.3 DiwiTherm

®

for mounting on a pipe surface

Contact bulb

Material: stainless steel

Mounting tube: 120 mm

Fixing with a tightening strap (not included in delivery)

Cable

Silicone, shielded, application range -50 ... +200 °C

Cable length to user specications

The sensor sleeve and case are connected by the cable shielding. Earthing on both ends

can lead to potential losses and indication inaccuracy.

The specied accuracy can only be guaranteed up to a maximum cable length of 15 m. With

longer cable lengths, the accuracy can deviate sharply.

3157559.05

DiwiTherm

®

model TR75 for mounting on a pipe surface, rear cable output, with panel

mounting ange

Panel mounting

ange

4. Design and function

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14 WIKA operating instructions DiwiTherm

®

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Neck tube

Material: stainless steel

Neck tube diameter: 12 mm

Standard neck length: 150 mm, others on request (minimum neck length: 100 mm)

3157541.04

DiwiTherm

®

model TR75 for mounting on a pipe surface, with neck tube

Connection from housing to neck tube: xed, lower mount

11144807.04

DiwiTherm

®

model TR75 for mounting on a pipe surface, with neck tube

Connection from housing to neck tube: adjustable stem and dial,

rear mount, centric

4. Design and function

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WIKA operating instructions DiwiTherm

®

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EN

4.2 Scope of delivery

Cross-check scope of delivery with delivery note.

5. Transport, packaging and storage

5.1 Transport

Check the instrument for any damage that may have been caused by transport.

Obvious damage must be reported immediately.

5.2 Packaging

Do not remove packaging until just before mounting.

Keep the packaging as it will provide optimum protection during transport (e.g. change in

installation site, sending for repair).

Examine the packaging material carefully so that no accessories that might be packed within

it are lost.

5.3 Storage

Permissible conditions at the place of storage:

■

Storage temperature: -20 ... +60 °C

■

Humidity: 35 ... 85 % relative humidity (no condensation)

Avoid exposure to the following factors:

■

Direct sunlight or proximity to hot objects

■

Mechanical vibration, mechanical shock (putting it down hard)

■

Soot, vapour, dust and corrosive gases

■

Potentially explosive environments, ammable atmospheres

Store the instrument in its original packaging in a location that fulls the conditions listed

above. If the original packaging is not available, pack and store the instrument as described

below:

1. Wrap the instrument in an antistatic plastic lm.

2. Place the instrument along with shock-absorbent material in the packaging.

3. If stored for a prolonged period of time (more than 30 days), place a bag containing a

desiccant inside the packaging.

WARNING!

Before storing the instrument (following operation), remove any residual media.

This is of particular importance if the medium is hazardous to health, e.g. caustic,

toxic, carcinogenic, radioactive, etc.

4. Design and function / 5. Transport, packaging and storage

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16 WIKA operating instructions DiwiTherm

®

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EN

Typical mounting situation with contact bulb

■

Mounting on pipes

The geometry of the contact bulb has been

designed for pipes with external diameters

between 20 and 160 mm. For xing the

contact bulb to the pipe, pipe clamps are

sucient. The contact bulb should have

direct metallic contact with the measuring

point and have rm contact with the surface

of the pipe. Where temperatures under

200 °C are expected, a heat conductive

paste can be used to optimise the heat

transmission between contact bulb and pipe.

Insulation must be applied at the mounting

point to avoid error due to heat loss. This

insulation must have sucient temperature

resistance and is not included in the scope

of delivery.

Pipe clamp mounting

Lagging *

* Lagging mandatory!

Measuring

insert

Thermowell

6. Commissioning, operation

DiwiTherms

®

must only be operated with an additional thermowell.

Exception: Axial cable outlet (for panel mounting) or version with contact bulb.

Typical mounting situation with thermowell

6. Commissioning, operation

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WIKA operating instructions DiwiTherm

®

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EN

■

Mounting on tanks

The geometry of the contact bulb has been

designed for vessels with an external radius

up to 160 mm. If the mounting point of the

skin mounting contact bulb on the tank has

an external radius greater than 160 mm,

we recommend the use of an intermediate

piece designed for the respective tank

diameter, made of a material with good

thermal conductivity. The contact bulb can

be fastened to the tank by means of an angle

bracket with clamping screws, or any similar

method. The contact bulb should have direct

metallic contact with the measuring point and

have rm contact with the surface of the tank.

A heat conductive paste can be used to optimise the heat transmission between contact

bulb and vessel, if temperatures under 200 °C are expected. Insulation must be applied

at the mounting point to avoid error due to heat loss. This insulation must have sucient

temperature resistance and is not included in the scope of delivery.

When mounting a rotatable and inclinable DiwiTherm

®

thermometer, the specic

instructions must be followed. In order to set the indicator to the desired position, the

following steps must be taken:

1. The lock nut or union nut must be loosened at the process connection.

Angle bracket mounting

Lagging *

* Lagging mandatory!

2. The hexagon bolts and slotted screws at the swivel joint must be loosened.

loosening

Make sure to loosen the screws on

the opposite side as well!

Installation with

open-ended spanner

6. Commissioning, operation

3. Position the indicator as required, tighten the hexagon bolts and slotted screws, and nally

tighten the lock nut or union nut rmly.

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18 WIKA operating instructions DiwiTherm

®

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Observe the following points during sensor installation:

■

If possible, the entire length of the sensor should be exposed to the temperature being

measured.

■

In pipelines or at other measuring points, the temperature sensor should be directed as

far towards the ow as possible.

■

When using thermowells, ll a thermal contact medium in order to reduce the heat

transfer resistance between the outer wall of the sensor and the inner wall of the

thermowell if possible. The working temperature of the heat conductive paste is

-40 ... +200 °C.

WARNING!

Do not use any heat transfer oil!

6.1 Parallel threads

If the thermometer connecting head, neck tube, thermowell or process connection are

connected with parallel threads (e.g. G ½, M20 x 1.5 ...), these threads must be secured

using seals which prevent liquids from penetrating into the thermometer.

As standard, WIKA uses copper prole seals for the connection between the neck tube

and the thermowell, and at paper seals for the connection of the connection head and the

extension neck or thermowell.

If the thermometer and the thermowell are already connected, the seals will already be

mounted. The plant operator must check whether the seals are suitable for the operating

conditions and must replace them, if necessary, with suitable seals.

For thermometers without a thermowell, and/or where these are delivered separately, the

seals are not included and must be ordered separately.

Tighten the threads by hand when carrying out the nal assembly on the plant. This will

correspond to the delivery status of the premounted components. The nal tightening torque

should be applied using a spanner (half rotation).

The seals must be replaced after dismantling!

The seals can be ordered from WIKA, indicating the WIKA order number and/or

the designation (see table).

6. Commissioning, operation

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WIKA operating instructions DiwiTherm

®

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EN

WIKA

Order no.

Designation Suitable for threads

11349981 per DIN 7603 Form C 14 x 18 x 2 -CuFA G ¼, M14 x 1.5

11349990 per DIN 7603 Form C 18 x 22 x 2 -CuFA M18 x 1.5, G ⅜

11350008 per DIN 7603 Form C 21 x 26 x 2 -CuFA G ½, M20 x 1.5

11350016 per DIN 7603 Form C 27 x 32 x 2.5 -CuFA G ¾, M27 x 2

11367416 per DIN 7603 Form C 20 x 24 x 2 -CuFA M20 x 1.5

1248278 per DIN 7603 D21.2 x D25.9 x 1.5 -Al G ½, M20 x 1.5

3153134 per DIN 7603 Form C D14.2 x D17.9 x 2 -StFA G ¼, M14 x 1.5

3361485 per DIN 7603 Form C D33.3 x D38.9 x 2.5 -StFA G 1

11355352 D15 x D21 x 3 -NP-Univ M24 x 1.5

1605933 D15 x D21 x 1 -NP-Univ M24 x 1.5

Legend:

CuFA = Copper, max. 45 HB

a

; lled with asbestos-free sealing material

Al = Aluminium Al99; F11, 32 to 45 HB

b

StFA = Soft iron, 80 to 95 HB

a

; lled with asbestos-free sealing material

6.2 Tapered threads (NPT)

It should be checked whether it may be necessary to seal them additionally with PTFE tape

or hemp. The threads must be lubricated with a suitable lubricant before tting.

Tighten the threads by hand when carrying out the nal assembly on the plant. This will

correspond to the delivery status of the premounted components. The nal tightening and

sealing must be made with a spanner (1.5 to 3 rotations).

7. Maintenance and cleaning

7.1 Maintenance

The DiwiTherm

®

thermometer is maintenance-free.

The indicator should be checked once or twice every year.

To do this, the instrument must be disconnected from the process and checked using a

temperature calibrator.

DiwiTherm

®

model TR75: battery powered (at least 10 years service life)

The battery is not replaceable!

Repairs must only be carried out by the manufacturer.

6. Commissioning, operation / 7. Maintenance and cleaning

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20 WIKA operating instructions DiwiTherm

®

, model TR75

EN

7.2 Cleaning

CAUTION!

■

Before cleaning, correctly disconnect the instrument from the pressure supply,

switch it o and disconnect it from the mains.

■

Clean the instrument with a moist cloth (soap water).

■

Electrical connections must not come into contact with moisture.

■

Wash or clean the dismounted instrument before returning it, in order to

protect personnel and the environment from exposure to residual media.

■

Residual media in dismounted instruments can result in a risk to persons, the

environment and equipment.

Take sucient precautionary measures.

For information on returning the instrument see chapter 9.2 “Return”.

8. Faults

Faults Causes Measures

The battery has less than

2.7 V

Error message

The battery has less than 2.7 V Contact the manufacturer

No signal/ line break Mechanical load too high or

overtemperature

Replacement of the sensor

or the measuring insert with a

suitable version

Display of measured value

jumps

Cable break in connecting

cable or loose contact caused

by mechanical overload

Replacement of the sensor or

measuring insert with a suitable

design, for example a thicker

conductor cross-section

Erroneous measured values

and response times too long

Wrong mounting geometry, e.g.

mounting depth too deep or

heat dissipation too high

The temperature-sensitive area

of the sensor must be inside

the medium, and surfaces

measurements must be

ungrounded

Erroneous measured values

and response times too long

Deposits on the sensor or

thermowell

Remove deposits

Corrosion Composition of the medium

not as expected or modied

or wrong thermowell material

selected

Analyse medium and then

select a more-suitable material

or replace thermowell regularly

7. Maintenance and cleaning / 8. Faults

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