Related Manuals for Ampcontrol GG2
Summary of Contents for Ampcontrol GG2
- Page 1 GG2 Detector Real time Gas Monitoring Design, Installation and Maintenance Guide Version: 1, November 2020 Designed and manufactured in Australia by Ampcontrol Pty Ltd...
- Page 2 The note symbol highlights key information. Please share these notes with other operators. ENVIRO The enviro (environmental) symbol highlights areas which may have an impact on the surrounding fauna and/or flora. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 2 of 45...
- Page 3 GG2B033 Version 1 – NOVEMBER/2020 Copyright Notice The Ampcontrol GG2 Real Time Gas Monitoring System described in this document is the property of AMPCONTROL PTY LTD. It is furnished under a license agreement and is to be used only in accordance with the terms of the agreement.
-
Page 4: Table Of Contents
8.3 Electrochemical and Catalytic ZERO Test ..........25 8.4 Electrochemical and Catalytic SPAN Test ..........28 8.5 Non Dispersive Infrared ZERO and SPAN Adjustment ......29 Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 4 of 45... - Page 5 9 SERVICE, MAINTENANCE & DISPOSAL ............41 9.1 Equipment Service ................... 41 9.2 Equipment Maintenance ................42 9.3 Disposal ....................44 10 REFERENCED STANDARDS and RESOURCES ......... 45 Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 5 of 45...
- Page 6 MAINTENANCE APPLICATION GUIDE GG2B033 Version 1 – NOVEMBER/2020 TABLE OF FIGURES Figure 1: GG2 Example System (iMAC Communication) ................ 13 Figure 2: Factors Effecting Response Times ..................16 Figure 3: Detector Blockages ......................... 19 Figure 4: Response Time @ Different Concentrations ................19 Figure 5: Response Time to a Set Alarm or Trip Point ................
- Page 7 Table 3: Response time determination ....................32 Table 4: Telemetry Test Target Values ....................35 Table 5: AS/NZS2290.3.2018 - Schedule of Inspection and Tests............43 Table 6: Corrective Maintenance Checks ....................44 Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 7 of 45...
-
Page 8: Definitions
A SIS is usually has a number of safety functions with different SIL’s so it is best avoid describing it by a single Safety Integrity Levels Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 8 of 45... - Page 9 (using ISO/IEC 17025), testing laboratories (using ISO/IEC 17025), medical testing laboratories (using ISO 15189), inspection bodies (using ISO/IEC 17020) and proficiency testing providers using ISO/IEC 17043. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 9 of 45...
-
Page 10: Safety And Other Warnings
GG2B033 Version 1 – NOVEMBER/2020 1 SAFETY AND OTHER WARNINGS For safety reasons, the GG2 Real Time Gas Monitoring System must be installed, operated and serviced only by competent personnel. Please read and understand this instruction manual completely before installing, operating or servicing this equipment. Failure to install or operate this instrument in accordance with the instructions contained in this manual may create hazardous operating conditions. -
Page 11: Receiving And Storage
If there is evidence of physical damage, notify Ampcontrol immediately. Notify Ampcontrol immediately in the case of any discrepancies to the packing list. Keep a record of any claims and correspondence. Photographs are recommended. -
Page 12: Design Principles
Duplication or triplication of detectors and control apparatus may be required for continuous monitoring and to prevent false alarms. Coverage Density – potential sources Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 12 of 45... -
Page 13: Real Time Detectors As Part Of A Safety System
<take action> might be: Trip power Sound alarm Give visual indication <timeframe> might be: 10 milliseconds 100 milliseconds 30 seconds Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 13 of 45... -
Page 14: Typical Flammable And Toxic Gases In Coal Mines
Nitrogen dioxide belongs to a group of gases collectively referred to as the oxides of nitrogen. Other gases in this group include nitric oxide (NO), nitrous oxide (N O) and nitrogen peroxide (N Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 14 of 45... -
Page 15: Real Time Gas Monitoring System Safety Guidelines
The Safety Requirements Specification and trigger action response plan should specify the acceptability of the system unavailability when a fault is detected. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 15 of 45... -
Page 16: Detector Principles
Figure 2: Factors Effecting Response Times 6.1 Detector Filter Elements GG2 detectors incorporate a passive filter element to protect the detector gas membrane from airborne dust, dirt and moisture. All types of passive filter elements have a dangerous undetected failure mode (e.g. -
Page 17: Instrumentation Time Of Response (T90)
The relative response time of a Gasguard detector (that is, relative to a Gasguard detector of known response time) can be measured as detailed in Section 8.6. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 17 of 45... - Page 18 AS/NZS2290.3:2018 extract “The objective of this Standard is to facilitate the safe, efficient and productive use of gas detection and monitoring equipment in coal mines, by specifying requirements and recommendations for the inspection and maintenance of such equipment.” Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 18 of 45...
-
Page 19: Detector Blockages
Use this value as your t90 pass/fail reference to initiate maintenance on the detector 7.1 Detector Blockages Figure 3: Detector Blockages 7.2 Response Time @ Different Concentrations Figure 4: Response Time @ Different Concentrations Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 19 of 45... -
Page 20: Response Time To A Set Alarm Or Trip Point
Figure 5: Response Time to a Set Alarm or Trip Point 7.4 Gastrack Simulation – Ventilation/Gas Outburst Distribution Gastrack is a simulation tool to visualise the latency in a typical telemetry system. Figure 6: Gastrack Simulation Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 20 of 45... -
Page 21: Response Time Inspection/Test Criteria
GG2B033 Version 1 – NOVEMBER/2020 7.5 Response Time Inspection/Test Criteria 1. A span gas shall be presented to the detector using the GG2 recommended fittings to the detector or detector head. 2. The elapsed time between presentation of the span gas and the detector indicating 90% of the span gas concentration (t(90)) shall be recorded. -
Page 22: Commissioning And Calibration
± 2% of the nominal value. Calibration gas should be applied to the detector at a rate of 0.5/1 litres per minute, using the GG2 Calibration Cup. Allow sufficient time for the detector to stabilize before making an adjustment. - Page 23 GG2 SYSTEM DESING, INSTALLATION AND MAINTENANCE APPLICATION GUIDE GG2B033 Version 1 – NOVEMBER/2020 CAUTION! GG2 Detectors should be NATA calibration at least every 6 months to ensure their accuracy. NOTE Human breath contains a high concentration of CO and this may cause the CO instrument to read above zero.
- Page 24 "zero." This procedure may require repeating if the equipment zero and span adjustment interact. The recommended gases for spaning are listed in Table Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 24 of 45...
-
Page 25: Electrochemical And Catalytic Zero Test
For test gas concentrations less than the specified value, the equipment response shall not vary from the test gas concentration by more than a volume fraction of ±10% of the specified value. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 25 of 45... -
Page 26: Table 2: Specified Value For Various Gases
GG2 Display UI – Catalytic and Electrochemical Zero Adjustment 1. Access the GG2 maintenance menu via the display UI with the magnetic calibration tool by pressing any segment of the keypad to progress. Refer to the Display User Manual for an overview of navigating the user interface and the menu structure. -
Page 27: Figure 8: Gas Calibration
5. It is recommended to apply gas for 180 seconds prior to adjustment. Once the reading is stable, press the keypad ENTER button to save the ZERO ADJUSTMENT. Figure 10: Zero Adjustment – Set Zero Figure 11: Zero Adjustment – Saving Changes Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 27 of 45... -
Page 28: Electrochemical And Catalytic Span Test
GG2 Display UI – Catalytic and Electrochemical Span Adjustment 1. Access the GG2 maintenance menu via the display UI with the magnetic calibration tool by pressing any segment of the keypad to progress. Refer to the Display User Manual for an overview of navigating the user interface and the menu structure. -
Page 29: Non Dispersive Infrared Zero And Span Adjustment
GG2 Display UI – Non Dispersive Infrared ZERO and SPAN Adjustment 1. Access the GG2 maintenance menu via the display UI with the magnetic calibration tool by pressing any segment of the keypad to progress. Refer to the Display User Manual for an overview of navigating the user interface and the menu structure. -
Page 30: Figure 14: Gas Calibration
Figure 15: Gas Calibration – Warning 5. Apply zero gas and the GG2 Calibration Cup. Figure 16: Scaling Adjustment – Apply Zero Gas 6. It is recommended to apply gas for 180 seconds prior to adjustment. Once the reading is stable press ENTER on the keypad to save the ZERO ADJUSTMENT. -
Page 31: Response Test
The procedure applies a sharp and repeatable step change in gas concentration, to reduce the effects of flow rate and delays associated with purging the calibration cup and tubing. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 31 of 45... -
Page 32: Table 3: Response Time Determination
The response times of portable, fixed, transportable and machine mounted detectors shall be tested in accordance with this instruction for field-testing of response times. A span gas shall be presented to the detector using the GG2 Calibration Cup. The elapsed time between presentation of the span gas and the detector indicating 90% of the span gas concentration (t(90)) shall be recorded. -
Page 33: Figure 20: Response Test - Target Entry
Cup is not attached to the GG2 Detector. 1. Access the GG2 maintenance menu via the display UI with the magnetic calibration tool by pressing any segment of the keypad to progress. Refer to the Display User Manual for an overview of navigating the user interface and the menu structure. -
Page 34: Figure 21: Response Test - Instructions
Calibration Cup is detected and the screen will advance automatically. Figure 23: Response Test - Apply Cup NOTE As the gas concentration increases, setpoint flags may become set, triggering a status message. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 34 of 45... -
Page 35: Telemetry Test
2/22 mA for actual fault condition 11250 ‱ HIGH FAULT 22 mA 10625 ‱ HIGH WARMUP 21 mA 10000 ‱ 100 PERCENT 20 mA 5000 ‱ 50 PERCENT 12 mA Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 35 of 45... - Page 36 ‘permyriad of full scale’ and may require conversion. Refer to the Display User Manual for more information. 1. Access the GG2 maintenance menu via the display UI with the magnetic calibration tool by pressing any segment of the keypad to progress. Refer to the Display User Manual for an overview of navigating the user interface and the menu structure.
-
Page 37: Ilac Linearity Test
The detector should respond linearly to a change in the gas concentration, whilst within the designed measurement range. The linearity test function may assist in meeting regulatory and operational requirements for maintenance of the GG2 system. Linearity test results are available in the Modbus table (refer to the Display User Manual). -
Page 38: Figure 28: Linearity Test - Instruction Screen
Once the actual gas concentration has been entered, press the centre segment of the keypad to proceed. Figure 30: Linearity Test - Input Gas Concentration Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 38 of 45... -
Page 39: Figure 31: Linearity Test - Check Point One Saving
7. After choosing “SAVE CHECKPOINTS” OR after six checkpoints have been captured, the “TESTING COMPLETE” screen will be displayed, refer to Figure 33. Figure 33: Linearity Test - Testing Complete Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 39 of 45... -
Page 40: Calibration Troubleshooting
MAINTENANCE APPLICATION GUIDE GG2B033 Version 1 – NOVEMBER/2020 8.9 Calibration Troubleshooting If during calibration or zero of the GG2 Detector the status indicates a fault or the reading becomes erratic then possible reasons are as follows: Calibration Error a) Check the calibration gas. It should be a correct range in air mixture although other trace gases may be present. -
Page 41: Service, Maintenance & Disposal
A number of external system based checks should be completed on a regular basis. These ‘routine inspections’ must be carried out by suitably trained people with knowledge of the GG2 Display and the systems into which it is fitted. Routine inspections may take the form of either visual-only checks, or visual and ‘hands-on’... -
Page 42: Equipment Maintenance
Periodic maintenance consists mainly of scheduled checks to ensure the instrument remains in adjustment and gives the required response to the sampled gas. For recommended maintenance tasks and schedules, refer to the AS/NZS 2290 series. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 42 of 45... -
Page 43: Figure 7: Maintenance
Response time test On return to Telemetry test Telemetry test service Dynamic range test Dynamic range test Confirm calibration is 1.3.4 Confirm calibration is 1.3.4 current current Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 43 of 45... -
Page 44: Disposal
By ensuring that this product is disposed of correctly, you will be helping to prevent potentially negative consequences for the environment, which could otherwise be caused by incorrect waste handling of this product. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 44 of 45... -
Page 45: Referenced Standards And Resources
AS/NZS 4641:2018 - Electrical equipment for detection of oxygen and other gases and vapours at toxic levels—General requirements and test methods Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 45 of 45...
Need help?
Do you have a question about the GG2 and is the answer not in the manual?
Questions and answers