Simtronics GD10-P00 Manuale utente

Operating Manual

Doc: 850-811250-R05

Infrared Point Gas Detector

GD10-P00

GD10P Page 2 of 32 850-811250-R05

Note

This manual must be carefully read by those who have or will have the

responsibility for the operation or maintenance of this product. The product may not

perform as designed if it is not used and maintained in accordance with the

manufacturer’s instructions.

The warranties made by Simtronics with respect to the product are voided if the

product is not used and maintained as described in this manual.

Please read the general warnings in chapter 7.

GD10P Page 3 of 32 850-811250-R05

Table of contents

1.PRODUCT DESCRIPTION...................................................................................4

2.TECHNICAL SPECIFICATIONS...........................................................................5

3.INSTALLATION..................................................................................................7

3.1.Positioning ................................................................................................. 7

3.2.Fixing.......................................................................................................... 7

3.3.Weather protection ................................................................................... 8

3.4.Duct or pipe mounting............................................................................... 9

3.5.External cable.......................................................................................... 11

3.6.Electrical connection .............................................................................. 12

4.COMMISSIONING.............................................................................................13

4.1.Visual inspection ..................................................................................... 13

4.2.Power up.................................................................................................. 13

4.3.Checking system functions..................................................................... 13

5.OPERATION.....................................................................................................14

5.1.Analogue Output Protocol....................................................................... 14

5.2.HART® Interface ..................................................................................... 14

6.MAINTENANCE ...............................................................................................20

6.1.Cleaning of optical lens/mirror.............................................................. 20

6.2.Function test............................................................................................ 20

6.3.Calibration test........................................................................................ 21

6.4.Re-zero .................................................................................................... 21

6.5.Fault finding ............................................................................................. 23

7.WARNINGS......................................................................................................24

7.1.Ownership and confidentiality................................................................ 24

7.2.Liability..................................................................................................... 24

8.WARRANTY .....................................................................................................25

9.CERTIFICATIONS AND STANDARDS ...............................................................25

9.1.Standards................................................................................................. 25

9.2.Approvals................................................................................................. 25

9.3.Marking.................................................................................................... 26

9.4.Explanation of product coding................................................................ 27

10.ACCESSORIES AND SPARE PARTS .................................................................28

APPENDIX 1 #-codes for generic HART®GD10 ......................................................30

CONTACT DETAILS..................................................................................................32

GD10P Page 4 of 32 850-811250-R05

1. PRODUCT DESCRIPTION

The GD10P has been designed with features that provide an effective response to

the detection of gas hazards in a wide range of industrial environments from boiler

plant rooms to offshore petrochemical installations.

These infrared gas detectors differ from all other models, because they utilise

silicon based solid-state infrared sources. The complete opto-mechanical design

and construction is so stable that an ultra-fast speed of response can be achieved

whilst providing unparalleled service life and detector stability, thus saving on

maintenance and service costs.

We offer the longest combined detector and IR source warranty on the market.

For retrofit applications, a bridge interface is available allowing the detector to be

connected directly to catalytic systems, using the existing cabling and control

modules.

Supplied with worldwide performance (CSA / CENELEC) and hazardous area

approvals.

Suitable for use in SIL 2 and SIL 3 systems.

Compared with catalytic sensors, the GD10P has the following advantages:

Presence of oxygen is not required for correct measurement, which makes the

GD10P suitable even in an inert gas atmosphere.

No possibility of poisoning of the detector since no chemical reaction occurs,

i.e. silicon vapours and HS have no effect on the detector or the

measurement.

The gas flow rate has no influence on accuracy.

There are no saturation effects which could lead to false measurements. Thus,

the detector is capable of measuring gas concentrations up to 100% vol.

The detector has a continuous self-test function, and reports dirty optics and

fault conditions to the control system.

Total system costs can be dramatically reduced with the GD10P:

High reliability results in low test frequency and no calibration costs.

GD10P Page 5 of 32 850-811250-R05

2. TECHNICAL SPECIFICATIONS

Version: 0-100%LEL Methane, 5 sec. response time.

(Specification for other types on request)

GENERAL

Detection method IR-absorption, dual wavelength, dual path

IR-Source Solid state IR source, 50Hz flash

Gases detected Detector versions for several hydrocarbons as well

as CO2.

Self-test Continuous

Calibration Factory set, no field recalibration

PERFORMANCE

Lifetime stability *) ±5% of full scale (FS) reading

Accuracy *) ±3% FS between 0-50 % reading

±5% FS between 50-100 % reading

Response time T20 = 1 sec. (Optional 0.3 sec)

T50 = 2.5 sec. (Optional 0.7 sec)

T90 = 6 sec. (Optional 1.6 sec)

Start-up time *) Less than 60 sec., measuring 30 min. full

specification

*) Refers to -20°C to + 45°C

DETECTOR WARNINGS

Early Dirty Optics 55% signal attenuation

Dirty Optics 70% signal attenuation

Detector failure Main function fault or blocked optics.

OUTPUT SIGNAL

Standard Current source 4 – 20 mA, max. load impedance

500 Ohm

Option Current sink 4 – 20 mA

Maintenance HART® interface

GD10P Page 6 of 32 850-811250-R05

ELECTRICAL

Power supply 24 V DC, range18-32 V DC

Power consumption Approx. 3.5 W

Connection 3 wires (0.5mm2 - 1.5mm2)

Cable entry M20 Exe cable gland

TEMPERATURE RANGE

Storage -40°C to + 70°C (-40°F to +158°F)

Operating -40°C to + 65°C (-40°F to +149°F)

Humidity (operation) 100% RH

HOUSING

Main compartment Exd IIC T6 Gb

Terminal comp. Exe

Protection category IP66/IP67 DIN 40050

Housing material Stainless steel SIS2343 (ASTM 316)

Weight Approx. 2.9 kg (6.4 Lbs)

Dimensions 264L x 104W x 106H (mm)

10.4 x 4.1 x 4.2 (inches)

WARRANTY

5 years full warranty on complete instrument

15 years warranty on the IR-sources

GD10P Page 7 of 32 850-811250-R05

3. INSTALLATION

The area in which the detector may be installed must be in accordance

with the certification of the detector and in accordance with the standards

of the appropriate authority in the country concerned.

3.1. Positioning

The detector should be mounted where gas leakage is most likely to occur. To

detect methane, which is lighter than air, inside an enclosed area the detector

should be mounted high in the area to be protected or immediately above potential

leakage sites.

To detect gases heavier than air, e.g. propane, the detector should be mounted

below the potential leakage site.

The detector should be mounted in a place where maintenance, i.e. cleaning of the

optics, is easily performed.

The detector may be mounted in areas where no oxygen is present.

The detector may be mounted in areas with strong airflow

The detector should NOT be mounted where it could be drenched by water.

3.2. Fixing

The detector is mounted by means of a projecting mounting leg using two M8

screws and washers, or by means of the Duct Mounting Flange Kit (4 x M8 screws).

The detector should be mounted so that the longitudinal axis of the detector is

horizontal. This will prevent accumulation of water and dust on the optics. The

Weather Protection must always be oriented correctly for optimal performance.

Figure 3.1 GD10P mounted by means of mounting feet

Weather Protection

M8 screw

GD10P Page 8 of 32 850-811250-R05

3.3. Weather protection

See “Flow Direction Indicator” in Fig. 3.2 below. Orientation of the Weather

Protection is performed as follows:

Use a screwdriver to loosen the two screws on the Weather Protection

Rotate the Weather Protection to correct position

Tighten the screw with a torque of max. 0.5 Nm

Figure 3.2 Orientation of GD10P weather housing in relation to flow direction

When the GD10P is mounted outdoors, the flow direction indicator must

point upwards.

Flow direction

indicator

GD10P Page 9 of 32 850-811250-R05

3.4. Duct or pipe mounting

If installed in a ventilation duct or pipe, the mounting arrangement and accessories

shown in Figure 3.3 and 3.4 should be used.

The Duct Mounting Bracket shown in Fig. 3.3 allows the GD10P to be positioned in

the core of the airflow in wide ducts or pipes.

In order to achieve minimum response time, the Weather Protection must be

oriented with the flow direction indicator facing into the air flow. See Figure 3.2 and

3.4

The sensor must be mounted in straight parts of the duct with undisturbed airflow.

Avoid areas with possible turbulent flow e.g. immediately after sharp bends or

junctions.

The kit includes a modified weather protection as well as piping for functional

testing.

Alternative A

Remove cap when using

alternative A

Figure 3.3 Exploded view, Duct Mount Flange Kit

Avoid direct light on lens and mirror if the GD10P is mounted without the

Weather Protection.

GD10P Page 10 of 32 850-811250-R05

115,8

45°

8,5 4x

5M 6M4x

150

170

Flange

599-811939

> 126 mm

Duct wall

Flow direction

indicator

Figure 3.4 Ventilation duct or pipe mounting using Duct Mounting Flange Kit

Refer to: Figure 3.3 for details.

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