Dräger Polytron 3000 Manual de usuario

Dräger Polytron 3000

(approved as type P3S)

Transmitter for electrochemical Sensors

Instructions for Use

ST–691–2002.eps

Contents

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

For Your Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Installing the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Preparing for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Installing the docking station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

How to install the electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Installing the 4 to 20 mA current loop on the transmitter . . . . . . . . . . . . . 8

Connecting to the central unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installing the transmitter in areas subject to explosion hazards of zone 0 or

zone 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installing the transmitters in explosion-hazard areas of zone 2, or in areas

not subject to explosion hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Installing the transmitters in non-explosion-hazard areas . . . . . . . . . . . 10

Installing the measuring unit Dräger Polytron 3000 . . . . . . . . . . . . . . . . . . .10

Fitting the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Unit calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Calibrating the zero point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Calibrating the sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Replacing the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Fault – Cause – Remedy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Order List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Polytron 3000 measuring units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

ATEX approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

IECEx approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

UL approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

CSA approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Drilling templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Dräger docking station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

For Your Safety

Strictly follow the Instructions for Use

Any use of the apparatus requires full understanding and strict observation of

these instructions. The apparatus is only to be used for purposes specified here.

Maintenance

The unit must be inspected and serviced regularly by suitably qualified persons.

Repair and general overhaul of the apparatus may only be carried out by trained

service personnel.

We recommend that a service contract be obtained with DrägerService and that

all repairs also be carried out by them. Only authentic Dräger spare parts may be

used for maintenance.

Observe chapter "Maintenance Intervals".

Use in areas subject to explosion hazards

Equipment and components which are used in explosion-hazard areas and which

have been inspected and approved in accordance with international or European

explosion-protection regulations may be used only under the specified conditions.

The equipment or components may not be modified in any manner. The use of

faulty or incomplete parts is forbidden.

The appropriate regulations must be observed at all times when carrying out

repairs on the equipment or components.

If the transmitter has been installed with a suitable safety barrier, its case may be

opened or the sensor may be changed while the transmitter is operating.

Accessories

Use only accessories shown in the Ordering List.

CAUTION

When the transmitter is installed in Ex areas Class II, Div. 1 & 2, Groups E, F, G,

the opening of the housing (inclusive sensor replacement) must not be done

when connected to power (power must be turned off or the area has to be tempo-

rarily declassified). Explosion hazard!

In applications where category 1G (Zone 0) or EPL Ga devices are required,

intense electrostatic charging processes must be avoided.

Intended Use

— Calibration by one person even in areas subject to explosion hazards.

— For connection to Dräger central units or to a programmable logic controller (PLC) to warn against physiologically harmful

gas concentrations.

— The optional display on the transmitter indicates the actual gas concentration and makes calibration easier.

False alarms during calibration are avoided by a special maintenance mode with output of a maintenance signal.

_______________

® Polytron is a registered trademark of Dräger.

DrägerSensor is a registered trademark of Dräger.

Dräger Polytron®3000 Transmitter for electrochemical sensors

— For stationary, continuous monitoring of gas concentrations in ambient air, with

built-in DrägerSensor®.

— For indoor and outdoor use.

— Suitable for use either in mines where firedamp may occur in accordance with

device category M1 or in potentially explosive atmospheres of Zone 0, Zone 1 or

Zone 2 in accordance with device category 1G, 2G or 3G.

For further details, see the installation notes.

ST–691–2002–1.eps

Design

Polytron 3000 is designed for connection to the Dräger Polytron, Regard, Quad-

Gard or Unigard central units.

The Polytron 3000 transmitter may also be connected to other central units if the

following conditions are met:

— Industrial standard 4 to 20 mA input signal

— Operating voltage at the transmitter 12 to 30 V DC.

On delivery, Polytron 3000 is configured for the measuring range and gas to be

measured. This information can be found on a sticker below the service port and on

the back of the measuring unit. The Order No. of the sensor to be used is also spe-

cified there.

Two different versions of the Polytron 3000 transmitter are available:

Polytron 3000 transmitter with display

This version is intended for installations requiring local indication of the measured

value.

The transmitter is calibrated with the aid of two potentiometers and the display.

Polytron 3000 transmitter without display

This version is intended for installations in which local indication of the measured

value is not required.

A digital voltmeter is required for calibration.

Optional extras:

Duct Extension

For mounting the Polytron 3000 transmitter on a duct.

For measuring the gas concentration in the pipe or duct. This option does not affect

the explosion-protection approval of the transmitter.

ST–691–2002–1.eps

ST–691–2002–2.eps

Installing the transmitter

Preparing for installation

The performance and effectiveness of the entire system depends essentially on the

position chosen for installing the transmitter.

The following should be noted during installation:

— Local requirements and regulations governing the installation of gas measuring

systems.

— Relevant regulations concerning the connection and routing of electric power

supply and signal lines.

— The full scope of environmental factors to which the transmitter may be exposed

(ambient conditions: see Technical data, page 19).

— Physical properties of the gas to be measured:

For gases with a density lower than that of air, the transmitter must be lo-

cated above any possible leak or at the highest point at which large concen-

trations of gas may occur.

For gases and vapours with a density greater than that of air, the transmitter

must be located below a possible leak or at the lowest point at which such

gases and vapours may occur.

— The specific uses (e.g. possible leaks, ventilation conditions, etc.).

— Accessibility for the necessary maintenance work (see Installation instructions

for the Polytron docking station).

— All other factors and conditions which could have a negative effect on the instal-

lation and operation of the system (such as vibrations or varying temperatures).

— We recommend installing a reflective shield if the unit is exposed to strong sun-

light.

— The transmitter must be installed vertically (sensor facing downwards).

— The transmitter has been tested with regard to its weather-resistance and may

be installed out of doors. Use of a splash guard is recommended to protect the

sensor from splashing water, dust and wind.

The Dräger Polytron 3000 transmitter consists of two main components:

— Dräger docking station

This can be pre-installed anywhere and contains the electrical installation com-

ponents.

— The measuring unit Dräger Polytron 3000

contains the electronics of the transmitter.

If the measuring unit is not fitted immediately after installing the docking station, the

latter should be covered with the raincover provided (dust and water protection) to

protect against dust and splashing water.

NOTE

In explosion-hazard areas:

Observe the national regulations concerning electrical equipment in

explosion-hazard areas.

Installing the transmitter

Installing the docking station

— If the transmitter is to be installed in a Zone 2 explosion-hazard area, select a

location with low exposure to mechanical risk.

— Docking station is installed vertically (transmitter with sensor facing down) in an

area with low vibrations and stable temperatures – near the possible leak.

— A space of at least 15 cm (6") must be maintained above the transmitter for in-

stallation of the measuring unit.

— A space of at least 10 cm (4") – preferably 30 cm (12") – must be maintained be-

low the docking station to permit access for maintenance.

Unpack the docking station.

1Remove raincover (protection against dust and splashing water).

2Remove the 4-pole terminal block (Part No. 83 16 422), keep it in a safe place

and insert it again after completion of the installation work.

A drilling template is provided on page 64. The mounting holes are 66 ±4 mm

(2.6 ± 0.16") apart.

If the measuring unit is not to be mounted at this time:

Refit the raincover (protection against dust and splashing water).

CAUTION

Spacers (e.g. mounting bracket 68 09 951) must be used to prevent any twisting

of the housing when installed on uneven surfaces.

00123758_1.eps

00223758_1.eps

Installing the transmitter

How to install the electrical connections

— The electrical wiring may be laid and connected only by a qualified electrician,

who must also comply with the appropriate regulations – a screened or uns-

creened cable (such as LiY, LiYCY) may be used.

— Connection to central device with at least 2-wire cable, 0.5 to 2.5 mm2.

— For currents of 0 to 22 mA, a DC voltage between 12.0 V DC and 30 V DC must

be present at the transmitter.

Installing the 4 to 20 mA current loop on the transmitter

Fit 2-wire connecting cable in cable gland, cut to length and strip ends

(approx. 80 mm / 3.15").

Shorten the shield (if installed) to prevent short-circuiting:

Connect cable

12-pin terminal for Polytron 3000 – check polarity (marking in the docking station).

Cut excess wires short or

2Fasten in 4-pin terminal.

1Slide connecting terminal back into holder.

Secure cable in holder.

Fold up the installation notes and place them in the Dräger docking station for

future use during commissioning.

Refit raincover (protection against dust and splashing water).

Connecting to the central unit

Connect shield to earth of central unit (e.g. housing, earth bar, etc.).

Connecting the Dräger Polytron 3000 transmitter to a Dräger control unit

(such as Regard, QuadGard, Unigard or Polytron):

— Further information about the connection can be found in the instructions for

the Dräger control unit.

Connecting the Dräger Polytron 3000 transmitter to control units with

a 4 to 20 mA interfaced made by other manufacturers:

— For operation together with control units made by other manufacturers, care

must be taken that the voltage at the transmitter does not drop below 12 V. The

supply voltage, the resistance of the cable and the load and the resistance of any

installed safety barrier must be taken into account.

— Further information about the connection can be found in the instructions for the

control unit being used.

Installing transmitter in mines where firedamp may occur

— Install a safety barrier with the appropriate explosion protection approval

(category M1) between the transmitter and the control unit.

— Only safety barriers or power supply units with the following characteristics may

be used:

UO(VOC) ≤30 V, IO(ISC) ≤0.3 A, PO≤700 mW.

Make sure the maximum permissible capacitance and inductance connected to the

safety barrier or power supply are not exceeded (taking into account the line as

well). The safety-related input parameters of the transmitter are as follows:

Ci = 0 nF, Li = 50 μH.

00323758_1.eps

Installing the transmitter

Installing the transmitter in areas subject to explosion hazards of zone 0

or zone 1

Install a safety barrier with the appropriate explosion protection approval

(category 1, 2 or Div. 1) between the transmitter and the control unit.

— Only safety barriers with the following characteristics may be used: Uo(Voc)

≤30 V, Io(Isc) ≤0.3 A, Po≤700 mW.

— Take care that the maximum permissible capacitance and inductance of connec-

tions to the safety barrier are not exceeded, also taking the cable into account.

The safety-related input parameters of the transmitter are: Ci= 0 nF, Li = 50 µH.

Transmitter supply units

(without HART-communication between Ex/Non-Ex area)

The following safety barriers are provided as examples only. Selected barriers must

be acceptable to the authority having jurisdiction and comply with the assigned P3S

entity parameters also taking the cable into account.

— Connect shielding to earth point and/or 0 V (Ex i).

Installing the transmitters in explosion-hazard areas of zone 2, or in

areas not subject to explosion hazards

— Use only supply units or a safety barrier classified as device category 3.

— Only supply units or safety barriers with the following characteristics may be

used: UO(VOC) ≤30 V, IO(ISC) ≤0.3 A, PO≤700 mW.

— Take care that the maximum permissible capacitance and inductance of connec-

tions to the supply unit are not exceeded, also taking the cable into account.

The safety-related input parameters of the transmitter are:

Ci= 0 nF, Li = 50 µH.

Manufacturer Type suitable for Line (Loop)

MTL MTL 5041 Zone 0, Div. 1 ≤190 Ω

Pepperl & Fuchs KFD2–STC4–Ex1 Zone 0, Div. 1 ≤140 Ω

KFD2–STC1–Ex1 Zone 0, Div. 1 ≤140 Ω

CAUTION

The category 1 marking has to be cut out from the rating-plate label. Once the unit

has been used after installation in the above manner, it may never be installed in

explosion-hazard areas of zone 0 or zone 1 (device category 1 or 2).

Explosion hazard!

00433020_1_en.eps

Non-explosion-hazard areaExplosion-hazard area, zone 0, 1 or Div. 1

Safety barrier

Control unit

Ex i

Earth point

4 ... 20 mA

0 V

–

4 to 20 mA

+24 V

Installing the transmitter

Installing the transmitters in non-explosion-hazard areas

Installing the measuring unit Dräger Polytron 3000

Remove the rain cover from the previously installed docking station.

Examine seal for signs of dirt and clean if necessary.

1Check position of eccentric catches and correct if necessary.

The eccentric opening must point upwards, engaged position.

Check the polarity (marking in the docking station) and cable routing and check

that the connector is securely seated; rectify as necessary (see the installation

notes for the Polytron docking station).

Unpack the measuring unit Dräger Polytron 3000.

2Insert the measuring unit about halfway up the docking station and slide it in as

far as it will go.

3Lower the unit along the front edge of the docking station. About 5 mm before its

hits the stop, the resistance will increase as the connector engages with the sok-

ket on the printed circuit board.

1Turn the eccentric catches clockwise with an Allen key to lock the measuring unit

(

= approx. 180o).

CAUTION

The explosion-protection markings has to be removed from the transmitter. Once

the transmitter has been used after installation in this manner, it may never be

installed in explosion-hazard areas.

CAUTION

Use only a 5 mm Allen key without a ball head.

00533020_1_en.eps

Non-explosion-hazard area

Control unit

4 ... 20 mA

0 V

–

4 to 20 mA

+24 V

Ex-hazard area, zone 2 or non explosion-hazard area

00623758_1.eps

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