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STATUS SCIENTIFIC CONTROLS FGD 3 Series Manual

Infrared gas detector
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STATUS SCIENTIFIC CONTROLS
Stock No. SS412 - Carbon Dioxide
Stock No. SS413 - Hydrocarbon
STATUS SCIENTIFIC CONTROLS LTD.
Hermitage Lane Industrial Estate,
Kings Mill Way,
Mansfield,
Nottinghamshire.
NG18 5ER
England
Tel
: 01623 651381
www.status-scientific.com
Issue:
Date:
Firmware:
FGD 3 Infrared
Gas Detector
7
7/1/20
V9.4i

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  • Page 1 Date: 7/1/20 Firmware: V9.4i FGD 3 Infrared Gas Detector Stock No. SS412 - Carbon Dioxide Stock No. SS413 - Hydrocarbon STATUS SCIENTIFIC CONTROLS LTD. Hermitage Lane Industrial Estate, Kings Mill Way, Mansfield, Nottinghamshire. NG18 5ER England : 01623 651381 www.status-scientific.com...
  • Page 3 Authorised Signatory to this declaration, on behalf of the manufacturer: Name: David Stuttard Title: Managing Director Address: Status Scientific Controls Ltd, Hermitage Lane Industrial Estate, Kings Mill Way Mansfield, Nottinghamshire, NG18 5ER, United Kingdom Signature Date: 14/10/19 Extract from TD06/110...

  • Page 4: Table Of Contents

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Detector Heads FIRMWARE REVISION HISTORY..............3 MAX XREF CHANGED FROM 150 TO 500.2. INTRODUCTION ........ 3 2.1 B ....................5 ACKGROUND INSTALLATION ....................6 ..................6 ITING THE ENSORS ..................6 ERMINATION .................... 6 ABLE OUTING &...
  • Page 5 STATUS SCIENTIFIC CONTROLS FGD3 Infrared Detector Heads ..............32 ARBON IOXIDE HIGH RANGE OUTLINE DIMENSIONS ................. 33...

  • Page 6: Firmware Revision History

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 1 Firmware Revision History Version 9.4i 12 Sept 2007 CO2E added to sensor list: 0-100% Volume. Version 9.3i 29 May 2007 Micro controller replaced, old processor out of program memory space. Added fault detection for loss of power on sensor side. Fault generated instead of high gas reading.
  • Page 7 STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads TD06/024 Issue: Change Note: 1904 Page 4...

  • Page 8: Background

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 2. Introduction The FGD 3 Infrared Gas Detector Head incorporates the latest generation of compact sensors incorporating infrared technology (see section 0). Warning – Infrared sensors will not detect Hydrogen gas. There are two current detectors in use, one for Hydrocarbon gases and the other for Carbon Dioxide.

  • Page 9: Installation

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 3 Installation IMPORTANT The instrument will monitor the gases in the environment after being powered for a few minutes; however it should be left for a minimum of 2hrs before it is calibrated.

  • Page 10: Cable & Screening

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 3.4 Cable & Screening The use of a screened cable is recommended for the installation of all detector heads. The correct strategy for connecting the screens depends upon the area in which the detector head is to be used (i.e.

  • Page 11: Installation In A Non-Hazardous Location

    The diagram above shows connection for FGD3 Infrared Detector Head in a non- hazardous location. The pin numbers shown at the control unit refer to pin numbers on the Status Scientific Controls input modules within the MCU Control Units. Refer to the manufacturer if alternative control unit is used.

  • Page 12: Installation In Hazardous Areas

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 3.6 Installation in Hazardous Areas When used in a hazardous area, the FGD3 detector requires an intrinsically safe (I.S.) power supply. This can be provided in two ways: 1. By using the MCU Control Unit incorporating the I.S. Output Module Type FGDIO.

  • Page 13: Installations Using Proprietary Safety Barriers

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 3.6.1 Installations using Proprietary Safety Barriers. For wiring details refer to manufacturers specific data sheets. TD06/024 Issue: Change Note: 1904 Page 10...

  • Page 14: Relative Response Characteristics

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads Relative Response Characteristics This section is applicable to FGD3 gas detectors fitted with an infrared Hydrocarbon sensor. Unless otherwise specified, the FGD3 infrared hydrocarbon gas detector is calibrated to provide an output signal linearised for methane (CH ) during manufacture.
  • Page 15 STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads TD06/024 Issue: Change Note: 1904 Page 12...

  • Page 16: Calibration And Menu System

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5 Calibration and Menu System The recommended calibration interval is 6 months. Under no circumstances should it exceed 12 months. Important Whenever the menu system is entered the instrument will cease to indicate the gas levels that it detects to the control unit.

  • Page 17: Menu Mode Selection

    Note : The password is a pre-set six digit number which can be obtained from Status Scientific Controls Ltd. Several calibration modes exist in the FGD3 and these are accessible via the instruments simple menu system. To select a calibration mode follow this procedure: •...
  • Page 18 STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads The following features are available via the ‘FGD3’ menu system: - Menu Function Section item Zero Sensor 5.2.1 Span Sensor 5.2.2 Set FSD 5.2.3 Set 4mA loop current 5.2.4 Set 20mA loop current 5.2.5...

  • Page 19: C: 1 - Zero Sensor

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.2.1 C: 1 - Zero Sensor This is a calibration feature. It allows the instrument to determine the sensor output under zero gas conditions. • Apply zero gas to the sensor inlet and allow enough time for the sensor to respond and all the gas to be purged (typically 2 minutes minimum dependent upon flow rate).

  • Page 20: C: 2 - Span Sensor

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.2.2 C: 2 - Span Sensor This is a calibration feature. It allows the instrument to determine the sensor output when it is exposed to a know concentration of gas. • Apply a known concentration of gas to the sensor inlet and allow enough time for the sensor to respond.

  • Page 21: C: 3 - Select Fsd

    C: 3 - Select FSD Menu mode C: 3 This option should only be used after advice from Status Scientific Controls. Changing this value will affect the 4 to 20mA output and possibly make the FGD3 unsuitable for its intended use.

  • Page 22: C: 6 - Display Mode

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.2.6 C: 6 - Display mode This option is used to set the display to match the type of sensor fitted. • Select menu mode C: 6 (refer to section 5.2) and press ENTER.

  • Page 23: C: 8 - Restore

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.2.8 C: 8 - Restore The firmware for the detector head is common to both CO and HC instruments. This feature allows the type of sensor fitted to be selected. IMPORTANT The instrument supplied with this manual has either an infrared HC sensor or an infrared CO sensor installed.

  • Page 24: C: 9 - View Engineer/Diagnostics Data

    Press MENU to return the instrument to its standard mode of operation. 5.2.10 C:10 - Sensor Frequency This menu option is used by Status Scientific Controls personnel only and allows the frequency at which the infrared sensor bulb is flashed. This setting must not be changed from the factory set value without first contacting Status Scientific Controls.

  • Page 25: C:12 - Cross Reference

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.2.11 C:12 - Cross Reference This option is used to allow the user to calibrate the sensor with a commonly available gas (e.g. methane or propane) but use the unit to detect a different gas (e.g. methanol or acetone etc.).

  • Page 26: C: 19 - Positive Zero Suppression

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.2.12 C: 19 - Positive Zero Suppression This option is used to allow the user to suppress small amounts of positive sensor zero drift. The setting can be set between 0 and 10% of the sensor range as set by the FSD value.

  • Page 27: C: 25 - Positive Zero Temperature Compensation

    50C. When the temperature is stable, usually after 2 hours, the value is set such that an accurate zero reading is displayed. Note: changing this value from the factory setting may make the readings inaccurate – consult Status Scientific Controls Ltd before making any changes. • Press MENU to open the menu system.

  • Page 28: C: 34 - Positive Span Temperature Compensation

    50C. When the temperature is stable, usually after 2 hours, the value is set such that an accurate gas reading is displayed. Note: changing this value from the factory setting may make the readings inaccurate – consult Status Scientific Controls Ltd before making any changes. • Press MENU to open the menu system.

  • Page 29: C: 36 - Negative Span Temperature Compensation

    FGD3 to -10C. When the temperature is stable, usually after 2 hours, the value is set such that an accurate gas reading is displayed. Note: changing this value from the factory setting may make the readings inaccurate – consult Status Scientific Controls Ltd before making any changes. • Press MENU to open the menu system.

  • Page 30: C: 46 - Response Window

    The value can be increased to obtain a quicker response to gas at the expense of decreasing the gas readings stability. Note: changing this value from the factory setting may make the readings unstable – consult Status Scientific Controls Ltd before making any changes. • Press MENU to open the menu system.

  • Page 31: Fgd3 Head Indications

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.3 FGD3 Head Indications The FGD3 Infrared Detector Head will flash ‘F xx’ if fault is detected. This will coincide with the head drawing a current of less than 2.0mA from the control unit, thus ensuring the control unit is aware of the fault condition.

  • Page 32: Sensor Replacement

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 5.4 Sensor Replacement Sensor replacement should only be performed by Status Scientific Controls field service personnel, or a trained engineer. Consult Status Scientific Controls for further details. Following sensor replacement:- • The sensors electronics must be set-up.

  • Page 33: Trouble Shooting

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 6 Trouble Shooting The FGD3 Infrared detectors have been extensively tested and have been found to provide reliable monitoring of target gas levels. Problems encountered by customers are usually found to be caused by: •...

  • Page 34: Certification

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 7 Certification The FGD3 infrared gas detector carries the following markings: STATUS SCIENTIFIC CONTROLS GAS DETECTOR TYPE FGD3 1180 II 2 G Ex iad II C T4 Gb (-20°C<Ta<+60°C) BASEEFA BAS01ATEX2300 SERIAL No.

  • Page 35: Specification

    STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 8 Specification Size 122 x 142 x 75mm nominal NDIR Infrared, temperature compensated, dual Sensor Type element Sensor MTBF 10 years 8.0 – 28V DC (for 4-20mA Signal) Operating voltage 5.8 – 7.5V DC...
  • Page 36 STATUS SCIENTIFIC CONTROLS FGD3 Infrared Gas Detector Heads 9 Outline Dimensions STA TUS Depth = 75mm TD06/024 Issue: Change Note: 1904 Page 33...

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