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Vaisala MGP261 User Manual

Multigas probe for methane, carbon dioxide, and humidity measurement
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M212273EN-A
User Guide
MGP261 Multigas Probe for Methane, Carbon
Dioxide, and Humidity Measurement
MGP261

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Summary of Contents for Vaisala MGP261

  • Page 1 M212273EN-A User Guide MGP261 Multigas Probe for Methane, Carbon Dioxide, and Humidity Measurement MGP261...
  • Page 2 English versions are This product contains software developed applicable, not the translations. by Vaisala or third parties. Use of the The contents of this document are subject software is governed by license terms and to change without prior notice.

  • Page 3: Table Of Contents

    2.2.6 Connectivity to Vaisala Insight Software..........11 Probe Parts....................... 13 2.3.1 Cable Gland Options and Lead-Throughs..........14 Measurement Principle................... 15 Using MGP261 in Hazardous Locations............17 2.5.1 Guidelines for Safe Use in Hazardous Conditions........ 17 Installation.......................20 Overview......................20 3.1.1 Process Flow Range and Installation Type.......... 20 3.1.2...
  • Page 4 MGP261 User Guide M212273EN-A Modbus......................38 Configuring Modbus Communication Settings with Insight..... 39 Analog Output Configuration..............40 Overview......................40 Configuring Analog Outputs with Modbus..........40 Configuring Analog Outputs with Insight...........40 Changing Units in Insight................41 Wet Basis and Dry Basis Measurement Parameters........42 Environmental Compensation..............43...
  • Page 5 Table of Contents Appendix A: ....................68 Modbus Registers...................68 A.1.1 Measurement Data..................68 A.1.2 Configuration Registers................70 A.1.3 Status Registers..................80 A.1.4 Device Identification Objects..............83 Warranty......................85 Technical Support....................85 Recycling......................85...
  • Page 6 MGP261 User Guide M212273EN-A List of Figures Figure Output Parameter Selections in Vaisala Insight PC Software..... 10 Figure 2 MGP261 Probe Parts (Closed and Opened View)........13 Figure 3 Cable Gland Options and Lead-Throughs ..........14 Figure 4 Probe Cuvette with Mirror and Sensor Chips........... 15 Figure 5 Measurement in the Measurement Cuvette..........16...
  • Page 7 List of Tables Table 1 Document versions....................7 Table 2 Related Manuals....................7 Table 3 MGP261 Measurement Parameters..............10 Table 4 Screw Terminal Wiring Requirements............18 Table 5 Intrinsic Safe IIB Output Parameters............. 18 Table 6 Default Modbus Serial Communication Settings........38 Table 7 Measurement Performance................62...
  • Page 8 MGP261 User Guide M212273EN-A...

  • Page 9: About This Document

    This manual. First version of the document. 1.2 Related Manuals Table 2 Related Manuals Document Code Description M212238EN MGP261 Multilingual Installation and Safety Guide (languages: English, German, French, Dutch, Spanish, Portuguese, Italian, Hungarian, Czech, Polish, Finnish, Estonian, Swedish, Norwegian, Danish) M212291EN USB Service Cable 257295 Quick Guide...

  • Page 10: Trademarks

    MGP261 User Guide M212273EN-A 1.4 Trademarks Vaisalaâ and CARBOCAPâ are registered trademarks of Vaisala Oyj. All other product or company names that may be mentioned in this publication are trade names, trademarks, or registered trademarks of their respective owners.

  • Page 11: Product Overview

    Ex certified for use in Ex Zone 0 (parts inserted into process) and Ex Zone 1 (parts outside the process). MGP261 can be installed directly into raw process gas, removing the need for sample treatment. Application areas include anaerobic digestion of industrial and municipal waste and sludge from waste water treatment, landfill gas monitoring, activated carbon filter monitoring in biogas treatment process, and CHP engine feed gas monitoring.

  • Page 12: Measurement Parameters

    2.2.3 Wet Basis and Dry Basis Measurement Output MGP261 methane, carbon dioxide, and water vapor measurements can be shown either as wet basis or dry basis values. The wet basis / dry basis measurement output selection is made when ordering the probe, and can be configured with Vaisala Insight PC software or Modbus.

  • Page 13: Installation Type

    MGP261 uses different internal calculation models depending on the installation type and gas flow rate. For this reason, the type of the installation must be set correctly in MGP261 settings. You can view and change the installation type configuration with Vaisala Insight PC software:...
  • Page 14 MGP261 User Guide M212273EN-A • See real-time measurement. • Configure serial communication settings, analog input and output parameters and scaling, and environmental compensations. More Information ‣ Connecting to Insight Software (page 35)

  • Page 15: Probe Parts

    Chapter 2 – Product Overview 2.3 Probe Parts Figure 2 (page 13) shows the MGP261 main components with the connection box of the probe closed and opened. Figure 2 MGP261 Probe Parts (Closed and Opened View) Connection box key Grounding terminal Lead-throughs for wiring: install cable glands as required (see...

  • Page 16: Cable Gland Options And Lead-Throughs

    2.3.1 Cable Gland Options and Lead-Throughs Figure 3 (page 14) shows the MGP261 cable gland options and lead-through measurements. Cable glands are not provided by Vaisala. When selecting cable glands for your application, note the requirements in Guidelines for Safe Use in Hazardous Conditions (page 17).

  • Page 17: Measurement Principle

    Chapter 2 – Product Overview 2.4 Measurement Principle The Vaisala CARBOCAPâ sensor used in the probe is a silicon-based, nondispersive infrared (NDIR) sensor for the measurement of methane (CH ), carbon dioxide (CO ), and humidity (H Figure 4 Probe Cuvette with Mirror and...

  • Page 18: Figure 5 Measurement In The Measurement Cuvette

    MGP261 User Guide M212273EN-A TO5 packages with hermetic windows are used to protect the sensor chips from moisture and contamination. A heater chip is utilized to prevent condensation in normal operation. Figure 5 Measurement in the Measurement Cuvette Mirror Light absorbed by the measured gases Sensor chips under TO5 packages (see items 4 …...

  • Page 19: Using Mgp261 In Hazardous Locations

    For information on the standards that apply to using MGP261 based on the classification of the device, see MGP261 certification documentation and the declarations of conformity related to MGP261 at www.vaisala.com/declarationofconformity.

  • Page 20: Table 4 Screw Terminal Wiring Requirements

    RS-485 wiring. • See the overview in the installation instructions. • The cable glands and wires used for wiring MGP261 must be Ex compliant. • Unused lead-throughs must be sealed using Ex compliant plugs. • Select a strain relief option that suits the application (either use cable glands that include strain relief or install separate clamps: see IEC 60079-14).
  • Page 21 Connecting Probe to Insight PC Software The Insight PC software connection cable must only be used outside the explosion hazardous area. Remove the probe from the process for configuration, and use only the Vaisala accessory PC connection cable to connect the probe to Insight.

  • Page 22: Installation

    MGP261 uses different internal calculation models depending on the installation type and gas flow rate. For this reason, the type of the installation must be set correctly in MGP261 settings. You can view and change the installation type configuration with Vaisala Insight PC software:...

  • Page 23: Npt 1.5" Thread Test Plug 257525Sp

    MGP261 comes shipped with an NPT 1.5" male thread test plug (Vaisala order code: 257525SP). If you are uncertain about the thread type of the process connector you want to install MGP261 into, use the thread test plug to check that it fits into the process connector threads (that is, that the process connector thread type is NPT 1.5"...

  • Page 24: Installation Option: Ball Valve Installation

    RS-485 terminals on the component board. 1.5" male NPT thread on MGP261: never install to any other thread type than 1.5" female NPT. For best results, install MGP261 horizontally and position the tip of the filter within 1/3 of the pipe's diameter from the pipe centerline.

  • Page 25: Installation Option: Flow-Through Adapter Installation

    Chapter 3 – Installation 3.1.5 Installation Option: Flow-Through Adapter Installation Figure 9 (page 23) shows MGP261 attached into the MGP261 flow-through adapter accessory (Vaisala order code: 258877). For instructions on attaching MGP261 to the flow-through adapter, see Attaching Flow-Through Adapter to MGP261 (page 31).

  • Page 26: Mgp261 Dimensions

    MGP261 User Guide M212273EN-A 3.1.6 MGP261 Dimensions Figure 10 (page 24) shows the MGP261 dimensions. The figure also shows the cabling lead- through depth: for more information on cable gland options and lead-through dimensions, see Cable Gland Options and Lead-Throughs (page 14).

  • Page 27: Gas Safety During Installation

    • Ensure that the thread type of the installation port is 1.5" female NPT. If unsure, verify the thread type with the 1.5" NPT thread test plug. • Apply PTFE tape to the 1.5" male NPT thread of MGP261 as instructed in Preparing Probe for Installation (page...

  • Page 28: Preparing Probe For Installation

    • PTFE tape (wide) for the probe threads PTFE M16x1.5 (1) M20x1.5 (2) 1. Attach cable glands (not provided by Vaisala) to the wiring lead-throughs as required. Note the cable gland requirements listed in Guidelines for Safe Use in Hazardous Conditions (page 17)).

  • Page 29: Inserting Probe Into Process And Opening Connection Box

    Chapter 3 – Installation 3.3 Inserting Probe into Process and Opening Connection Box 1. Insert the probe into the 1.5" female NPT installation port and rotate it clockwise until it sits firmly in the port. Do not tighten the probe to full tightness, only enough to keep it securely in place when wiring.

  • Page 30: Wiring

    − 18 ... 30 VDC RS-485 RS-485 Figure 12 MGP261 Screw Terminal Markings and Cable Routes CAUTION! Connect only de-energized wires. Never switch on the power supply input before completing the wiring and closing the connection box. 1. Connect the input, output, and power supply wiring as required in your application.

  • Page 31: Wiring Diagram

    INTERNALLY CONNECTED WITH PROBE GROUNDING TERMINAL 3 − Vin + Vin − 2 − D − 1 − GROUNDING TERMINAL GROUNDING RAIL 24 VDC EQUIPOTENTIAL POWER SUPPLY − BONDING FOR PROBE RS-485 + RS-485 − CONTROLLER RSGND Figure 13 MGP261 Wiring Diagram...

  • Page 32: Finalizing Installation

    1. Close and tighten the connection box (< 0.55 mm cover gap) and cable glands, and tighten the probe to final tightness on the installation port by turning the tightening nut with the wrench. 2. Connect the MGP261 grounding terminal to the grounding rail of the installation site with a ≥ 4 mm wire.

  • Page 33: Attaching Flow-Through Adapter To Mgp261

    Chapter 3 – Installation 3.6 Attaching Flow-Through Adapter to MGP261 The MGP261 flow-through adapter 258877 is delivered assembled and is intended to be used with the probe installed in an upright position. For an overview of the flow-through adapter, Installation Option: Flow-Through Adapter Installation (page 23).
  • Page 34 8. Connect the gas inlet tube to the upper port of the adapter and the gas outlet tube to the lower port. Adapter port size: G 1/8. 9. Connect to Vaisala Insight PC software and ensure that the installation type has been set as Flow-through adapter. For instructions, see...

  • Page 35: Installation Type Configuration In Insight

    Chapter 3 – Installation 3.7 Installation Type Configuration in Insight Vaisala Insight PC software allows configuring the installation type of MGP261. The available options are Directly in process and Flow-through adapter. When the selected installation type is Flow-through adapter, the internal calculation model is adapted to the flow-through environment.

  • Page 36: Operating With Insight Software

    • Calibrate and adjust the device. Download Vaisala Insight software at www.vaisala.com/insight. The probe can be connected to Vaisala Insight software using a Vaisala USB cable (no. 257295). More Information ‣ Connecting to Insight Software (page 35) ‣...

  • Page 37: Connecting To Insight Software

    2. Connect the USB cable to a free USB port on the PC. 3. Open the MGP261 connection box. 4. Unscrew the 6-pin screw terminal block on the MGP261 component board and lift the block out. 5. Plug the USB cable into the open port as shown in the illustration.

  • Page 38: Installing The Driver For The Usb Service Cable

    3. Locate the cable in the list of devices: • If the device is listed as Vaisala USB Device with a COM port number in brackets, the cable is ready for use. Take note of the COM port number for later use.

  • Page 39: Insight Main View

    • Diagnostics: troubleshooting and administrative information about the device status. Also includes an option to export the device error log as a text file. When contacting Vaisala support, it is recommended to include an up-to-date export of the error log with the support request.

  • Page 40: Modbus

    Modbus variant is Modbus RTU (Serial Modbus) over RS-485 interface. The pre-configured default Modbus serial settings are presented in the following table. Modbus communication settings can also be configured using Vaisala Insight PC software. For a description of MGP261 Modbus registers, see Modbus Registers (page 68).

  • Page 41: Configuring Modbus Communication Settings With Insight

    Chapter 5 – Modbus 5.1 Configuring Modbus Communication Settings with Insight Figure 17 Modbus Communication Settings in Insight PC Software You can configure the following Modbus communication settings with Insight PC software: • Device address • Communication bit rate • Parity, data bits, and stop bits •...

  • Page 42: Analog Output Configuration

    MGP261 User Guide M212273EN-A 6. Analog Output Configuration 6.1 Overview MGP261 has 3 scalable 4 … 20 mA analog output channels. Each output has the following configuration options: • Output parameter selection • Output scale low end and high end • Error output level The configuration of the outputs (output parameter selection and scaling) is selected when ordering the probe, and can be changed with Modbus or Vaisala Insight PC software.

  • Page 43: Changing Units In Insight

    Chapter 6 – Analog Output Configuration 1. Connect to Insight (see Connecting to Insight Software (page 35)). 2. Select > Configure Device, and then one of the 3 analog outputs. 3. Select the measurement parameter that is sent on the output channel you are configuring, set the scaling for the output, and define the output level that indicates an error.

  • Page 44: Wet Basis And Dry Basis Measurement Parameters

    6.5 Wet Basis and Dry Basis Measurement Parameters MGP261 methane, carbon dioxide, and water vapor measurements can be shown either as wet basis or dry basis values. The wet basis / dry basis measurement output selection is made when ordering the probe, and can be configured with Vaisala Insight PC software or Modbus.

  • Page 45: Environmental Compensation

    • If the probe is integrated in a system that measures either temperature or pressure, they can be updated to the probe continuously. The method used for environmental compensation is configured on the order form when ordering the probe, and can later be updated using Vaisala Insight PC software or Modbus protocol. 7.1.1 Temperature Compensation MGP261 can measure the approximate temperature of the CARBOCAPâ...

  • Page 46: Compensation Mode During Calibration

    ‣ Configuring Environmental Compensations with Insight (page 44) 7.2 Configuring Environmental Compensations with Modbus The Modbus implementation of MGP261 includes configuration registers for pressure and temperature compensation setpoints. You can also configure the temperature and pressure compensation mode (External, Setpoint, Measured (temperature only), or Off).

  • Page 47: Figure 21 Measurement Menu View In Insight Pc Software

    Chapter 7 – Environmental Compensation Figure 21 Measurement Menu View in Insight PC Software Compensation power-up defaults: configure the setpoint compensation values that are taken into use at device reset. Used when the temperature or pressure compensation mode is set as Setpoint. Compensation setpoints: configure the temporary setpoint compensation values that are in use while the device is powered on, but revert back to power-up defaults when the device is reset.

  • Page 48: Configuring Setpoint Values For Compensations With Insight

    7.3.3 Using Compensation Received from External Temperature or Pressure Sensor If you have connected an external pressure or temperature sensor to the 4 … 20 mA Ex ia analog input channel of MGP261 (see Wiring (page 28)), you can use the measurement received from the sensor as the environmental compensation.

  • Page 49: Configuring Input From External Analog Pressure Or Temperature Sensor

    Chapter 7 – Environmental Compensation 3. Select External from either the Pressure compensation mode or the Temperature compensation mode dropdown list, and then select Save. 4. Open the Analog input 1 menu and configure the scaling of the external sensor input. See Configuring Input from External Analog Pressure or Temperature Sensor (page 47).
  • Page 50 MGP261 User Guide M212273EN-A 4. Store the setting with Save.

  • Page 51: Calibration

    Insight, see Connecting to Insight Software (page 35). To feed reference gases to MGP261 in a controlled manner when calibrating and adjusting, use a flow-through adapter. An MGP261 flow-through adapter is available as an optional accessory: for more information, see Flow-Through Adapter (page 50).

  • Page 52: Compensation Mode During Calibration

    More Information ‣ Configuring Environmental Compensations with Insight (page 44) 8.1.2 Flow-Through Adapter The MGP261 flow-through adapter (Vaisala order code: 258877) is used in sampling line installations and field calibration and adjustment to achieve a controlled flow of gas to the probe.
  • Page 53 Chapter 8 – Calibration More Information ‣ Installation Option: Flow-Through Adapter Installation (page 23) ‣ Attaching Flow-Through Adapter to MGP261 (page 31) ‣ Installation Type Configuration in Insight (page 33) ‣ Flow-Through Adapter Dimensions (page 67)

  • Page 54: Calibration And Adjustment With Insight Pc Software

    MGP261 User Guide M212273EN-A 8.2 Calibration and Adjustment with Insight PC Software Figure 21 (page 45) describes the calibration and adjustment selections in Insight. Figure 24 Calibration Menu View in Insight PC Software Calibration information: enter information about the latest calibration (date, text description) in this tab.

  • Page 55: Example: 2-Point Adjustment With Zero Point Adjustment

    Chapter 8 – Calibration 2. Select > Calibrate > Yes. 3. Select one of the adjustment options in the Calibrate menu and see the separate instructions for each option. 8.2.1 Example: 2-Point Adjustment with Zero Point Adjustment When making a 2-point adjustment, the low end adjustment is carried out simultaneously for all measurement parameters by adjusting the zero point signal in the Zero point adjustment tab.

  • Page 56: Calibrating And Adjusting Methane (Ch ) Measurement

    MGP261 User Guide M212273EN-A MGP261 Figure 25 Zero Point Adjustment Tab Follow the signal stabilization from the graph and the numeric value shown above the graph. After the signal has stabilized, select Start adjustment and wait for the notification message about successful zero point adjustment activation. The adjustment is saved automatically.

  • Page 57: Calibrating And Adjusting Carbon Dioxide (Co ) Measurement

    Chapter 8 – Calibration When making a 2-point adjustment, first carry out the zero signal adjustment in the Zero point adjustment tab. The zero signal adjustment replaces the low end adjustment in a 2-point adjustment. 1. Reset any possible existing adjustments with the Restore factory adjustment button. This prevents earlier adjustments from having an effect on the current adjustment.

  • Page 58: Calibrating And Adjusting Temperature Measurement

    MGP261 User Guide M212273EN-A 5. When the measurement has stabilized, click the Reference value, point 1 text box and enter the known CO level of the calibration point. Press ENTER or click outside the text box when done. 6. Check that the measured value for point 1 is automatically inserted.
  • Page 59 Chapter 8 – Calibration 3. When the measurement has stabilized, click the Reference value, point 1 text box and enter the known temperature of the calibration point. Press ENTER or click outside the text box when done. 4. Check that the measured value for point 1 is automatically inserted. 5.

  • Page 60: Maintenance

    Replacement filters are available from Vaisala (order code: DRW249919SP). Remove the filter by rotating counter-clockwise. CAUTION! Do not touch the optical surfaces inside the measurement cuvette when replacing the filter. The probe filter is the only user-replaceable part in MGP261. For other maintenance requirements, contact Vaisala.

  • Page 61: Removing Probe From Process

    WARNING! Exposure to hazardous gases (for example, hydrogen sulfide S)) is possible when installing or removing MGP261 from the process. • Always follow local safety guidelines. Ensure that the work area is safe and meets local regulations (for example, related to ventilation and personal protective equipment).

  • Page 62: Cleaning The Probe

    MGP261 User Guide M212273EN-A 4. Rotate the tightening nut of the probe counter-clockwise with a wrench to release the probe. See Inserting Probe into Process and Opening Connection Box (page 27). CAUTION! The PTFE tape seal on the probe threads will tear when you rotate the probe open, and must be replaced when reinstalling the probe.

  • Page 63: Sending Probe To Vaisala

    4. To install the probe back into the process after cleaning, follow the installation instructions starting from Preparing Probe for Installation (page 26). 5. If you are sending the probe to Vaisala for maintenance, allow it to dry fully before packing it. See the instructions in Sending Probe to Vaisala (page 61).

  • Page 64: Technical Data

    MGP261 User Guide M212273EN-A 10. Technical Data 10.1 Specifications Table 7 Measurement Performance Property Methane CH Carbon Dioxide CO Water Vapor H Sensor CARBOCAPâ CARBOCAPâ CARBOCAPâ Measurement unit Volume-% Volume-% Volume-%, dew point °C Measurement range 0 … 100 vol-% 0 … 100 vol-% 0 …...

  • Page 65: Table 8 Operating Environment

    Chapter 10 – Technical Data Property Methane CH Carbon Dioxide CO Water Vapor H Response time with 90 s at ≥ 0.5 l/min flow-through adapter (recommended: 0.5 … 1 l/min) Excluding cross-interferences to other gases. Time to first reading Time to specified accuracy At +20 °C (+68 °F) ambient temperature With standard PTFE filter Table 8 Operating Environment...

  • Page 66: Table 11 Mechanical Specification

    Table 12 Options and Accessories Item Order Code 257295 Configuration cable (RS485/USB) Flow-through adapter 258877 Sintered PTFE filter (includes O-ring) DRW249919SP Connection box key DRW250233SP Shipping sleeve ASM213114SP NPT 1.5" thread test plug 257525SP â available at www.vaisala.com/insight. Vaisala Insight software for Windows...

  • Page 67: Wetted Parts Material Information

    Chapter 10 – Technical Data 10.2 Wetted Parts Material Information Vaisala Oyj, as a manufacturer of the Vaisala CARBOCAP Multigas Probe MGP261, certifies that the materials used in the wetted parts of the MGP261 probe are the following: Probe body: AISI 316L, EN 1.4404 (X2CrNiMo17-12-2) (AISI 316L)

  • Page 68: Mgp261 Dimensions

    MGP261 User Guide M212273EN-A 10.3 MGP261 Dimensions Figure 28 (page 66) shows the MGP261 dimensions. The figure also shows the cabling lead- through depth: for more information on cable gland options and lead-through dimensions, see Cable Gland Options and Lead-Throughs (page 14).

  • Page 69: Flow-Through Adapter Dimensions

    MGP261 flow-through adapter 258877 with MGP261 installed into the adapter. The dimension figure also shows the measurement (from the edge of the adapter mounting plate to the edge of the connection box) that can be used to verify that the probe has been inserted to correct installation depth.

  • Page 70: Modbus Registers

    MGP261 User Guide M212273EN-A Appendix A. Modbus Registers  A.1 Modbus Registers CAUTION! Registers are numbered in decimal, starting from one. Register addresses in actual Modbus messages (Modbus Protocol Data Unit (PDU) are in hexadecimal and start from zero. Subtract 1 from the register number presented in this manual to get the address used in the Modbus message.
  • Page 71 Appendix A Register Address Register Description Data Format Unit Number (Hexadecimal) (Decimal) Floating Point Values 000C Dew point temperature 32-bit float °C 000D 000E Dew / frost point 32-bit float °C temperature 000F 0010 Sensor temperature 32-bit float Ts °C 0011 Integer values 0100...

  • Page 72: Configuration Registers

    MGP261 User Guide M212273EN-A A.1.2 Configuration Registers Table 14 Modbus Configuration Data Registers (Writable) Register Address Register Description Data Format Unit / Valid Range Number (Hexadecimal) (Decimal) Environmental Compensation 0300 Power-up value for 32-bit float pressure compensation Range: 450 … 1550 Init/default: 1013.25...
  • Page 73 Appendix A Communication 1538 0601 Bit rate Enum Valid range 4800 … 115200 4 = 4800 5 = 9600 6 = 19200 7 = 38400 8 = 57600 9 = 115200 (default: 6 (19200)) 1539 0602 Parity, data, stop bits Enum 0 = N,8,1 1 = N,8,2...
  • Page 74 MGP261 User Guide M212273EN-A Analog Output 1 1795 0702 Scale low end for analog Float Output output 1 measurement parameters parameter. 0000 Minimum and maximum wet basis) values vary for different 0002 parameters. dry basis) 0004 wet basis) 0006 dry basis):...
  • Page 75 Appendix A Analog Output 1 1797 0704 Scale high end for analog Float Output output 1 measurement parameters parameter. 0000 Minimum and maximum wet basis) values vary for different 0002 parameters. dry basis) 0004 wet basis) 0006 dry basis): Minimum: 0 Maximum: 1000000 Output...
  • Page 76 MGP261 User Guide M212273EN-A Analog Output 2 2050 0801 Analog output 2 0000 measurement parameter wet basis) selection. When written, 0002 scalings are reset. dry basis) 0004 wet basis) 0006 dry basis) 0008 wet basis) 000A dry basis) 000C 000E...
  • Page 77 Appendix A Analog Output 2 2051 0802 Scale low end for analog Float Output output 2 measurement parameters parameter. 0000 Minimum and maximum wet basis) values vary for different 0002 parameters. dry basis) 0004 wet basis) 0006 dry basis): Minimum: 0 Maximum: 1000000 Output...
  • Page 78 MGP261 User Guide M212273EN-A Analog Output 2 2053 0804 Scale high end for analog Float Output output 2 measurement parameters parameter. 0000 Minimum and maximum wet basis) values vary for different 0002 parameters. dry basis) 0004 wet basis) 0006 dry basis):...
  • Page 79 Appendix A Analog Output 3 2306 0901 Analog output 3 0000 measurement parameter wet basis) selection. When written, 0002 scalings are reset. dry basis) 0004 wet basis) 0006 dry basis) 0008 wet basis) 000A dry basis) 000C 000E Table 13 (page 68)
  • Page 80 MGP261 User Guide M212273EN-A Analog Output 3 2307 0902 Scale low end for analog Float Output output 3 measurement parameters parameter. 0000 Minimum and maximum wet basis) values vary for different 0002 parameters. dry basis) 0004 wet basis) 0006 dry basis):...
  • Page 81 Appendix A Analog Output 3 2309 0904 Scale high end for analog Float Output output 3 measurement parameters parameter. 0000 Minimum and maximum wet basis) values vary for different 0002 parameters. dry basis) 0004 wet basis) 0006 dry basis): Minimum: 0 Maximum: 1000000 Output...

  • Page 82: Status Registers

    MGP261 User Guide M212273EN-A Analog Input 1 2563 0A02 Scale low end for analog Float 0204 input 1 compensation (pressure) parameter. Minimum: 0 Minimum and maximum Maximum: 20 values vary for different parameters. 0206 (temperature) Minimum: -200 Maximum: 400 2565...

  • Page 83: Table 16 Error Codes In Register 0200

    Appendix A Register Address Register Description Data Format Bitmask Number (Hexa- (Decimal) decimal) 0208 measurement 16-bit signed 0000 : Unsupported integer status 0001 : Reading is not reliable 0209 measurement 16-bit signed integer status (dry basis) 0002 : Under range 020A measurement 16-bit signed...

  • Page 84: Table 17 Error Codes In Register 0202 Hex (Status Code High)

    MGP261 User Guide M212273EN-A Bitmask Error Message Severity 0014 Sensor signal low. Error 0015 Sensor signal low. Error 0016 Internal voltage out of range. Error 0017 Sensor signal distorted. Error 0018 Sensor signal distorted. Error 0019 measurement out of range.

  • Page 85: Device Identification Objects

    Software version (for example "1.2.3") VendorUrl "http:// www.vaisala.com/" ProductName "Vaisala Multigas Probe MGP261 " Probe serial number SerialNumber (for example, "R0710040") Date of the factory Calibration date calibration Information text of the Calibration text factory calibration Vaisala-specific device information object...
  • Page 86 MGP261 User Guide M212273EN-A...

  • Page 87: Warranty

    Please see the applicable supply contract or Conditions of Sale for details of the warranty for each product. Technical Support Contact Vaisala technical support at helpdesk@vaisala.com. Provide at least the following supporting information: • Product name, model, and serial number •...
  • Page 88 MGP261 User Guide M212273EN-A...
  • Page 90 www. v aisala.com...

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