MSA 47K Series Bedienungsanleitung

MSAsafety.com

Operation Manual

Series 47K Gas Detector [SIL 2]

Order No.: 10052472/14

Schlüsselstrasse 12

8645 Rapperswil-Jona

Switzerland

For the Declaration of Conformity, please visit the product page on MSAsafety.com.

MSA CONTENTS

Series 47K Gas Detector [SIL 2] 3

Contents

1.Safety Regulations .............................................................................................. 6

1.1.Correct Use ................................................................................................ 6

1.2.Liability Information .................................................................................... 6

1.3.Application, Advice and Restrictions .......................................................... 7

2.Description........................................................................................................... 8

2.1.General ...................................................................................................... 8

2.2.Principle of Operation................................................................................. 9

2.3.Technical Specification............................................................................... 9

3.Installation.......................................................................................................... 11

3.1.Installation – Step by Step........................................................................ 11

3.2.Unpacking ................................................................................................ 11

3.3.General Installation Instructions for Achieving EMC Compliance............. 11

3.4.Recommended Torque and Terminal Sizes ............................................. 12

3.5.Electrical Connection to the Control Unit.................................................. 13

3.5.1Junction Box Terminals .................................................................................13

3.5.2Maximum Cable Length ................................................................................13

3.6.Electrical Connections.............................................................................. 14

4.Start-up............................................................................................................... 14

5.Maintenance and Service.................................................................................. 15

5.1.Calibration ................................................................................................ 15

5.1.1Zero Calibration .............................................................................................16

5.1.2Span Calibration ............................................................................................16

5.1.3Calibration with Accessories .........................................................................16

5.2.Sensor Replacement................................................................................ 17

5.3.Series 47K-PRP and Series 47K-HT-PRP ............................................... 18

5.3.147K-HT-PRP..................................................................................................19

5.3.247K-PRP........................................................................................................19

CONTENTS MSA

4Series 47K Gas Detector [SIL 2]

6.Accessories ....................................................................................................... 22

6.1.Calibration Cap ........................................................................................ 22

6.2.Weather Protection Cap........................................................................... 22

6.3.Flow Through Adapter / Pump Adapter.................................................... 23

6.4.Duct Mount Flange................................................................................... 24

6.5.Pipe Mounting Kit ..................................................................................... 25

6.5.1Mounting Kit for Pipes with a Diameter of up to 50 mm................................25

6.5.2Mounting Kit for Pipes with a Diameter from 50 mm to 150 mm ..................26

6.6.Remote Calibration Adaptor (CalGard) .................................................... 26

6.6.1Installation ......................................................................................................27

6.6.2Operation .......................................................................................................28

7.Markings, Certificates and Approvals ............................................................. 29

7.1.According to the Directive 2014/34/EU [ATEX] ........................................ 29

7.1.1Series 47K-PRP, Series 47K-HT-PRP..........................................................29

7.1.2Junction Box Typ S47K and X Series AL Junction Box................................30

7.2.According to IECEx .................................................................................. 31

7.3.Special Conditions for SIL 2 According to TUV Certificate 968 /

EZ 392.00/09............................................................................................ 32

8.Ordering Information......................................................................................... 34

8.1.Gas Detector (Sensor + Junction Box)..................................................... 34

8.2.Gas Detector, Calibrated with Certified MSA Gas Controllers.................. 34

8.3.Sensor...................................................................................................... 34

8.4.Junction Box............................................................................................. 35

8.5.Accessories.............................................................................................. 35

MSA CONTENTS

Series 47K Gas Detector [SIL 2] 5

9.Dimensions ........................................................................................................ 36

9.1.Gas Detector (Ex e Junction Box) ............................................................ 36

9.2.Gas Detector (Ex d Junction Box) ............................................................ 37

9.3.S47K Adapter Plate (Junction Box) .......................................................... 38

9.4.Wall Mounted Bracket, Sensor 47K-HT-PRP ........................................... 38

9.5.Junction Box ATEX 100 °C; Sensor 47K-HT-PRP ................................... 39

9.6.Pipe Mounting Kit ..................................................................................... 40

9.6.1Mounting Kit for Pipes with a Diameter of up to 50 mm................................40

9.6.2Mounting Kit for Pipes with a Diameter from 50 mm to 150 mm ..................41

9.7.Remote Calibration Adaptor ..................................................................... 42

10.Wiring Diagrams ................................................................................................ 43

10.1.MSA Control Unit SUPREMA ................................................................... 43

10.1.1Series 47K-PRP/-HT-PRP [3-wire]................................................................43

10.1.2Series 47K-PRP/-HT-PRP [5-wire]................................................................44

10.2.MSA Control Unit 9010 / 9020 Series....................................................... 44

10.2.1Series 47K-PRP/-HT-PRP [3-wire] Channel A .............................................44

10.2.2Series 47K-PRP/-HT-PRP [3-wire] Channel B .............................................45

10.3.MSA Control Unit Gasgard XL ................................................................. 45

10.3.1Series 47K-PRP [3-wire] ...............................................................................45

10.3.2Series 47K-HT-PRP ......................................................................................46

10.4.Wiring Diagram Sensor 47K-HT-PRP with Junction Box ATEX 100 °C ... 46

11.Appendix ............................................................................................................ 47

11.1.Discontinued Gas Detectors..................................................................... 47

11.1.147K-ST...........................................................................................................47

11.1.247K-HT ..........................................................................................................48

SAFETY REGULATIONS MSA

6Series 47K Gas Detector [SIL 2]

1. Safety Regulations

1.1. Correct Use

The MSA Gas Detector Series 47K is designed to continuously monitor the

atmosphere for the presence of potentially explosive gas or vapour in air in the

range 0 to 100% LEL.

It is designed for use as an integral part of an MSA fixed gas detection system for

the protection of industrial plant and workers.

It is imperative that this operating manual be read and observed when using the

system. In particular, the safety instructions, as well as the information for the use

and operation of the apparatus, must be carefully read and observed.

Furthermore, the national regulations applicable in the user's country must be

taken into account for a safe use.

Danger

This product is supporting life and health. Inappropriate use,

maintenance or servicing may affect the function of the device and

thereby seriously compromise the user’s life.

Before use, the product operability must be verified. The product must

not be used if the function test is unsuccessful, it is damaged, a

competent servicing/maintenance has not been made, genuine

MSA spare parts have not been used.

Alternative use, or use outside this specification will be considered as non-

compliance. This also applies especially to unauthorised alterations to the

apparatus and to commissioning work that has not been carried out by MSA or

authorised persons.

1.2. Liability Information

MSA accepts no liability in cases where the product has been used

inappropriately or not as intended. The selection and use of the product are the

exclusive responsibility of the individual operator.

Product liability claims, warranties also as guarantees made by MSA with respect

to the product are voided, if it is not used, serviced or maintained in accordance

with the instructions in this manual.

MSA SAFETY REGULATIONS

Series 47K Gas Detector [SIL 2] 7

1.3. Application, Advice and Restrictions

This Manual should be carefully read by those responsible for use and

maintenance of the gas detection and monitoring system.

The series 47K catalytic sensor is suitable for the detection of gases or

vapours in air with a concentration below the Lower Explosive Limit [LEL].

The series 47K catalytic sensor cannot measure concentrations of gases or

vapours in inert atmospheres or oxygen deficient atmospheres. The European

standard EN 60079-29-2 indicates an Oxygen concentration higher than

10 vol% is necessary for correct operation of catalytic sensors.

Attention

The certification does not permit use of the series 47K sensor in

oxygen enriched atmospheres.

The series 47K catalytic sensors can be poisoned by high levels or long

exposure to certain substances present in the atmosphere being monitored.

When a catalytic sensor is installed in a place where those substances may

be present, to ensure the correct operation and measurement accuracy the

sensor should be calibrated more frequently.

The sensitivity of the series 47K catalytic sensors is reduced by the presence

of silanes, silicates, silicones, tetraethyl lead, halogen compounds, sulphurous

compounds, organic-phosphorous compounds and compounds containing:

fluorine, chlorine, iodine or bromine, therefore the sensors must be

recalibrated after exposure to these substances.

The series 47K sensor opening [sintered disc] must be protected against

water, dust and mechanical damage. During painting operations in the area

where the sensor is installed, avoid traces of paint on the sensor opening. The

paint must not interfere with the diffusion process.

Note that the sensor opening [sintered disc] must always face downwards.

After having exceeded the full scale value an increased display of measured

values can appear temporarily. During this period no calibration must be

performed.

The only method of verifying the correct operation of the sensor is to carry out a

span check using a known concentration of calibration gas in air.

For response curves contact your national MSA office.

DESCRIPTION MSA

8Series 47K Gas Detector [SIL 2]

2. Description

2.1. General

The MSA Gas Detector Series 47K is designed to continuously monitor the

atmosphere for the presence of potentially explosive gas or vapour in air in the

range 0 to 100% LEL.

It is designed for use as an integral part of an MSA fixed gas detection system for

the protection of industrial plant and workers.

Typical areas where the MSA Series 47K Gas Detector can be used include:

The chemical and petrochemical industry

The paint and solvent-processing industry

The gas-processing industry

The steel-processing industry

Municipal areas

The Production, Warehousing, Distribution, Shipping and processing of gases

and vapours

The MSA Series 47K Gas Detector consists of the Series 47K catalytic sensor

and the junction box that contains the terminal board.

There are two versions of the junction box available:

Flameproof [Ex d] with ¾” NPT cable gland thread

Increased safety [Ex e] with metric M25 cable gland thread

The following Sensor Versions are available:

Series 47K-PRP: Poison Resistant Pellistor [100% LEL]

Series 47K-HT-PRP: High Temperature Poison Resistant Pellistor

[100 % UEG]

All versions are available in Stainless Steel 316.

Four accessories are available to allow easy calibration and to adapt the gas

detector to various applications:

Calibration cap

Flow through adapter

Duct mount flange

Weather protection cap with remote calibration capability

MSA DESCRIPTION

Series 47K Gas Detector [SIL 2] 9

2.2. Principle of Operation

The MSA 47K series of sensors operate on the principle of catalytic combustion.

The sensing element consists of a pair of filaments [“pellistors”] connected to a

pair of precision resistors to form a Wheatstone bridge.

One of the filaments, the detector, is coated with a catalyst, whilst the other, the

compensator is used as a reference to achieve the best stability.

The gas or vapour diffuses through a porous Stainless Steel sintered disc, which

acts as a flashback arrestor. When gas comes into contact with the surface of the

detector filament, it is oxidised. The heat generated by the reaction increases the

temperature of the detector, which results in a change of the detector electrical

resistance, and hence an unbalance of the Wheatstone bridge. The result is an

output signal directly proportional to the concentration of the flammable gas or

vapour. The signal is processed by an MSA controller designed to display the gas

concentration, actuate alarms and provide a suitable output signal to activate

subordinated external measurement data acquisition systems.

2.3. Technical Specification

The Series 47K combustible gas sensors are designed to meet the rigorous

requirements of ATEX Directive 2014/34/EU for fixed gas detection installations.

Sensor

Power consumption 1 Watt, typically

Linear dynamic range Standard & PRP & HT-Sensor: 0–100% LEL

Response time t50 ≤10 sec for propane + methane

t90 ≤20 sec for propane + methane

For other gases or vapours the response time

may be longer.

Typical sensitivity PRP- sensor methane: 12 mV/vol%;

propane: 16 mV/vol%;

HT-PRP- sensor methane: 12 mV/vol%;

propane: 16 mV/vol%;

Operating configuration Wheatstone Bridge circuit

Operating mode Constant current

Sensor current 310 mA for 47K-PRP,

280 mA for 47K-HT-PRP

Vmax 10 V

Operating life time 3 Years, in clean air, typically

Storage life time 5 Years, in MSA container, typically

Storage temperature range -20 °C to +40 °C**

DESCRIPTION MSA

10 Series 47K Gas Detector [SIL 2]

Operating temperature range PRP- sensor

Extended range *)

-25 °C to +55 °C

-40 °C to +55 °C

HT-PRP sensor -40 °C to +160 °C

Operating humidity range 5% to 95% RH non-condensing

Operating pressure range 800–1200 hPa

Air velocity Air velocity 0–6 m/s

[with duct mount flange: 0.5–20 m/s]

Poison resistance PRP sensor and HT-PRP sensor:

10 ppm HMDS for 40 min.

[max. signal loss 5% of reading]

Dimension Ø 36 x 56 mm

Weight < 230 g

Material St. St. 316

Accessory thread M36 x 1.5 mm

Sensor to junction box ¾” NPT or M25 x 1.5 mm

*) Extended range: The sensor extended temperature range is greater than the maximum specified in

EN 60079-29-1. It is therefore strongly recommended that if used above +55 °C or below -25 °C the

sensor is calibrated at the operating temperature.

**) The storage temperature range is also valid for spare parts and accessories

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