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Summary of Contents for GVZ Components MLD-S4 Series
- Page 1 Methane concentration monitoring Valid for CH extended range MLD-S4 Series with NevadaNano MPS Sensor inside USER MANUAL File: UM002-01 GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - Email: info@gvzcomp.it https://gvzcomp.it...
- Page 2 • Should the product be disposed of incorrectly, sanctions may be applied as stipulated in applicable local regulations regarding waste disposal. GVZ Components Srl - Via Magenta 67/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
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Page 3: Table Of Contents
3. TECHNICAL SPECIFICATIONS 4. MOUNTING INSTRUCTIONS 5. ELECTRICAL INSTALLATION 6. DETECTOR COMMUNICATION WORKING PRINCIPLES 7. MODBUS COMMUNICATION 8. HOW TO TEST MLD GAS DETECTOR GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... -
Page 4: Notes And General Information
GVZ Components assumes for the product, Shall be considered void. GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... -
Page 5: General Description
Modbus and programmable dry contact actions by a dedicated electronic. GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... -
Page 6: Technical Specifications
See gas table 2.3 Accuracy See gas table 2.3 IP rating IP67 Operating Temperature Range -40° to 75°C Operating Humidity Range 0-100% RH GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... - Page 7 (all always 39mA 50mA energized) Custom version: Only Modbus without 14mA 25mA relays, LEDs and analogue outputs) GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
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Page 8: Mounting Instructions
Choose mounting location of the sensor according to the local regulations and physical „ characteristics of the gas. Consider ventilation conditions. „ GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... - Page 9 Also consider ease of access for maintenance. The most common leak sources are valves, gauges, flanges, joints (brazed or mechanical), filling or draining connections, etc. GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
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Page 10: Electrical Installation
The cable is self-extinguishing according to IEC 60332-1-2. Length: standard 1,5m (or 3m) - Number of conductors: 11 x 0.25mm2 MLD Electrical connections: GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... -
Page 11: Detector Communication Working Principles
The detector must be powered in air with no gas presence for zeroing. It takes approximately 2 seconds to calculate and complete a measurement loop. GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... - Page 12 0.4V / 6mA closed 4 closed 4 After Manual Alarm 2 Reset MALFUNCTIONING Detected Fault Active 2.9V / >19mA closed 4 open GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
- Page 13 Only after having ascertained that there is no more gas present, it is possible to reset the pending Alarm 2 on the device manually or via Modbus. GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
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Page 14: Modbus Communication
Hours total 16 high bits Hours total 16 low bits CH4 Concentration (ppm) 16 high bits CH4 Concentration (ppm) 16 low bits GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... - Page 15 Stop bits ( 0=1 bit ; 1=2 bits) 16-bits *Function available only with pin PROGRAM MODE (PM) tied to GND (Section 7.6). GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
- Page 16 In the table below is reported the alarm or malfunction explanation and possible user action. The value refers to the Modbus input register at Address n°1 GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
- Page 17 -100 %LEL Contact support. Sensor has detected condition indicative 3500 13568 0035 Normal Not breathe on sensor. of human breath or humidity surge GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
- Page 18 Concentration (Ex : 8 = 800 ppm) ppm Concentration (Ex : 200 = 20.000 ppm) alarm & Alarms memory reset via Modbus GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
- Page 19 IP classification, the detector must be checked and if there is damage to the membrane, it should be replaced. A replacement membrane kit is provided for this purpose. GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it...
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Page 20: How To Test Mld Gas Detector
The best practice is to use one of the options toward the left side of the figure. In addition, do not switch between two different types of “air” during an experiment, as this can produce unwanted (and unrealistic) testing artifacts. GVZ Components Srl - Via Magenta 77/16A - 20017 Rho (MI) Tel. +39 02 3340 0846 - https://gvzcomp.it... - Page 22 Via Magenta 77/16A - 20017 Rho (MI) - Italy Tel. +39 02 3340 0846 Email: info@gvzcomp.it https://gvzcomp.it To download this manual as PDF file For any information regarding technical specifications, write to: support@gvzcomp.it...
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