Datcon DT7000 Manuel utilisateur

DT7000

Intrinsically Safe

Differential Pressure Meter / Transmitter

Operating Instructions

DT7000

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Contents

1. About this document.....................................................4

1.1. Function ................................................................................... 4

1.2. Target group............................................................................. 4

1.3. Symbolism used....................................................................... 4

2. For your safety...............................................................5

2.1. Authorized personnel ............................................................... 5

2.2. Appropriate use........................................................................ 5

2.3. Warning about misuse ............................................................. 5

2.4. General safety instructions....................................................... 5

2.5. EU conformity........................................................................... 5

2.6. Safety information for Ex areas................................................ 6

2.7. Environmental instructions ....................................................... 6

3. Product description.......................................................7

3.1. Delivery configuration............................................................... 7

3.2. Principle of operation ............................................................... 8

3.3. Adjustment ............................................................................... 8

3.4. Storage and transport .............................................................. 8

4. Mounting.........................................................................9

4.1. General Instructions ................................................................. 9

4.2. Main dimensions of the instrument ........................................ 10

4.3. Mounting procedure ............................................................... 11

5. Connecting ...................................................................13

5.1. Preparing the connection ....................................................... 13

5.2. Connection procedure............................................................ 14

5.3. Connecting the pressure to the instrument ............................ 16

5.4. Put the instrument under supply voltage................................ 16

6. Setting up .....................................................................17

6.1. Zeroing ................................................................................... 17

6.2. Calibrate the instrument ......................................................... 18

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7. Fault rectification.........................................................19

7.1. Fault finding............................................................................ 19

7.2. Repairing................................................................................ 19

8. Dismounting.................................................................20

8.1. Dismounting procedure .......................................................... 20

8.2. Disposal ................................................................................. 20

9. Appendix.......................................................................21

9.1. Technical specification ........................................................... 21

9.2. Application example ............................................................... 23

9.3. ATEX Certification.................................................................. 24

DT7000

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1. About this document

1.1. Function

This operating instructions manual has all the information

you need for quick set-up and safe operation of DT7000.

Please read this manual before you start setup.

1.2. Target group

This operating instructions manual is directed to trained

personnel. The contents of this manual should be made

available to these personnel and put into practice by them.

1.3. Symbolism used

Information, tip, note

This symbol indicates helpful additional information.

Caution, warning, danger

This symbol informs you of a dangerous situation that could

occur. Ignoring this cautionary note can impair the person

and/or the instrument.

Ex applications

This symbol indicates special instructions for Ex

applications.

•List

The dot set in front indicates a list with no implied sequence.

→Action

This arrow indicates a single action.

Sequence

Numbers set in front indicate successive steps in a

procedure.

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2. For your safety

2.1. Authorized personnel

All operations described in this operating instructions

manual must be carried out only by trained and authorized

specialist personnel. For safety and warranty reasons, any

internal work on the instruments must be carried out only by

DATCON personnel *.

* Except Chapter “6. Setting up”

2.2. Appropriate use

The DT7000 is a differential pressure meter / transmitter

for measurement of gauge pressure, differential pressure

of dry air.

The measuring range and overpressure are given on the

instruments data label.

2.3. Warning about misuse

Inappropriate or incorrect use of the instrument can give rise

to application-specific hazards, or damage to system

components through incorrect mounting or adjustment.

2.4. General safety instructions

The DT7000 is a high-tech instrument requiring the strict

observance of standard regulations and guidelines.

The user must take note of the safety instructions in this

operating instructions manual, the country-specific

installation standard as well as all prevailing safety

regulations and accident prevention rules.

2.5. EU conformity

The DT7000 is in conformity with the provisions of the

following standards:

MSZ EN 60079-0:2013 (ATEX)

MSZ EN 60079-0:2013/A11:2014 (ATEX)

MSZ EN 60079-11:2012 (ATEX)

MSZ EN 61326-1:2013 (EMC)

MSZ EN 55011:2016 (EMC)

MSZ EN 55011:2016/A1:2017 (EMC)

MSZ EN 61010-1:2011 (LVD)

MSZ EN 50581:2011 (RoHS 2)

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2.6. Safety information for Ex areas

Please note the Ex-specific safety information for installation

and operation in Ex areas. These safety instructions are part

of the operating instructions manual and come with the

concerning standards of Ex-approved instruments.

Warning! Electrostatic hazard. Clean the instrument housing

with a moist cloth and detergent!

2.7. Environmental instructions

Protection of the environment is one of our most important

duties.

Please take note of the instructions written in the following

chapters:

•Chapter 3.4. Storage and transport

•Chapter 8.2. Disposal

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3. Product description

3.1. Delivery configuration

Delivered items The scope of delivery encompasses:

•DT7000

•documentation:

this operating instructions manual

certification

warranty

The DT7000 consist of the following components:

1. instrument housing

2. front cover

3. pressure connecting stubs

4. connector sealing

5. connector

6. ground terminal

DT7000

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3.2. Principle of operation

Area of application The DT7000 Intrinsically Safe Differential Pressure Meter /

Transmitter enable measure gauge pressure or differential

pressure of dry air in Zone 1, 2 areas.

Application fields are: HVAC systems, filter monitoring, clean

rooms, etc.

Operating principle The measuring air gets into the measuring space of the

sensor via the pressure ports. The differential pressure

value is converted into electrical value by the sensor.

The signal converter circuit converts it into, 4-20 mA current

signal for the output and digital form for displaying the result

on the LCD.

Power supply The supply voltage is 12-28 VDC.

For other requirements see: Chapter 9.1. Technical

specification, Safety data.

3.3. Adjustment

The DT7000 is calibrated for the ordered measuring range.

If needed it is possible for the user to calibrate the

instrument via the internal trimmer potentiometers.

3.4. Storage and transport

This instrument should be stored and transport in places

whose climatic conditions are in accordance with chapter

9.1. Technical specification, as described under the title:

Environmental conditions.

Handle the package with special care the instrument is

highly sensitive to shocking!

The packaging of DT7000 consist of environment-friendly,

recyclable cardboard is used to protect the instrument

against the impacts of normal stresses occurring during

transportation. The corrugated cardboard box is made from

environment-friendly, recyclable paper. The inner protective

material is polyfoam and nylon, which should be disposed of

via specialized recycling companies.

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4. Mounting

4.1. General Instructions

Please respect the followings. Inappropriate or incorrect use

or mounting may cause measuring failure or damage of the

instrument.

Media compatibility The sensing element materials of the DT7000 are silicon

diaphragm, glass filled nylon and alumina ceramic.

Apply dry air only!

Pressure compatibility Check that the maximum pressure occur on the pressure

ports is always under the allowable value given on the data

label.

Measures differential or gauge pressure only with positive

pressure to port P+.

Mounting position The instrument should be where in vertical position Select a

mounting position you can easily read the display reach for

mounting and connecting the instrument and that reduce the

hazard of water, dust or dump getting into the instrument.

Shock, vibration Avoid shock or vibration during mounting and operation.

After mounting the instrument it is suggested to check the

zero on the display especially in case of < 300 Pa measuring

range.

If the displayed value is > 1 digit in case of open pressure

ports you can adjust it according Chapter 6.1. Zeroing.

Water, humidity The protection of the instrument is IP 65.

In a case of using DT7000 outdoor mount a shield over the

instrument to protect it against strong rain.

DT7000

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4.2. Main dimensions of the instrument

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