MSR ELECTRONIC PolyGard 2

Questions and Answers

C
Christopher AlexanderAug 12, 2025
What to do if there is no measured value at the tool or controller with MSR ELECTRONIC Gas Detectors?
- R
  Robert HernandezAug 12, 2025
  If you are not getting a measured value, consider these potential causes: * The SC (Sensor Cartridge) might not be properly plugged in. Ensure the SC plug is correctly connected. * The SC may not be registered. Register the SC. * The SC gas type or measuring range might not match the registered data. Verify that the SC data aligns with the registration data.
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armstrongdavidAug 15, 2025
How to fix MSR ELECTRONIC PolyGard 2 Gas Detectors when the green LED isn’t on?
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  fjohnsonAug 15, 2025
  If the green LED isn't lit, here are a few things to check: * First, ensure that the power voltage is correctly applied. Measure the voltage at X4, pins 1 (+) and 2 (-), ensuring it reads between 16–28 V DC. * Verify that the polarity at X4 is correct; if not, connect it correctly. * Make sure that the connector X4 is properly plugged in. * Also, inspect the wiring for any breaks.
A
Amy BrewerAug 20, 2025
What to do if MSR ELECTRONIC PolyGard 2 Gas Detectors show 'SC Input 1 ? stored type'?
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  diazsarahAug 20, 2025
  If you see the message 'SC Input 1 ? stored type', it indicates that the wrong SC type is at input 1. You should check the SC at input 1 and replace it with the correct type.
J
Joseph MejiaAug 23, 2025
What to do if MSR ELECTRONIC PolyGard 2 show 'SC Input 2 ? stored type'?
- C
  Caroline BlanchardAug 23, 2025
  If you see the message 'SC Input 2 ? stored type', it indicates that the wrong SC type is at input 2. You should check the SC at input 2 and replace it with the correct type.
V
Victoria MillerAug 27, 2025
What to do if MSR ELECTRONIC PolyGard 2 Gas Detectors show 'SC Input 3 ? stored type'?
- P
  Paul HernandezAug 27, 2025
  If you see the message 'SC Input 3 ? stored type', it indicates that the wrong SC type is at input 3. You should check the SC at input 3 and replace it with the correct type.
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Bianca BennettAug 31, 2025
What does it mean if the green LED doesn’t flash on MSR ELECTRONIC Gas Detectors?
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  Sheri CookAug 31, 2025
  If the green LED isn’t flashing, it could be due to: * An incorrect PCB address. Check the PCB address and correct it as necessary. * A lack of field bus communication. Check the field bus wiring, topology, and termination.
K
Keith HowellSep 3, 2025
What does it mean when MSR ELECTRONIC PolyGard 2 Gas Detectors display a measuring signal range error?
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  brianna50Sep 4, 2025
  If the measuring signal shows an error, this indicates an internal error. The suggested solution is to replace the SC (Sensor Cartridge).
R
Randy MurraySep 7, 2025
Why does the MSR ELECTRONIC Gas Detectors Tool/Controller show voltage or temperature range errors or a WatchDog trigger?
- R
  Richard EstesSep 7, 2025
  If the tool or controller displays messages indicating voltage range errors, temperature range issues, or a WatchDog trigger, this is due to an internal error. The suggested solution is to replace the PCB.

Summary

Functional Description

General

Provides an overview of the sensor cartridge's internal components and data processing.

Measuring Mode

Refers to the description of measuring modes in other MSR devices.

Special Mode

Refers to the description of special modes in other MSR devices.

Sensor Element for Toxic Gases and Oxygen

Details the electrochemical cell technology used for gas sensing.

Installation

Mounting Instructions

Provides guidance on selecting the mounting site and height for sensors.

Electrical Connection

Plug Connection (SC2) in SB2, MSB2, MSC2, WSB2

Explains the 3-pin plug connection for SC2 sensors.

Terminal Connection (MC2)

Details the terminal connection for MC2 sensors, including resistor removal.

Commissioning

Installation of Sensor Cartridge

Steps for installing the sensor cartridge into the housing.

Registration of the Sensor Cartridge

Information on registering and addressing field bus sensor cartridges.

Calibration

Calibration Work

Describes the procedure for performing zero and gain calibration.

Exchange of Sensor Cartridge

Procedure for replacing a used sensor cartridge with a calibrated one.

Inspection and Service

Inspection

Lists essential checks for sensor inspection according to EN 45544-4.

Service and Calibration

Combines sensor service with necessary calibration procedures.

Troubleshooting

Indicators at the SC2

States that SC2 sensors do not have diagnostic indicators.

Indicators at the MC2

Details diagnostic output currents for MC2 sensors.

Sensor Board (PCB)

Troubleshooting guide for issues related to the sensor board.

Sensor Cartridge (Messages at the Tool; Controller)

Troubleshooting messages and solutions for sensor cartridges.

Cross-sensitivity Data

Technical Data

MC2

Specifies electrical, sensor element, physical, and regulatory data for MC2.

Sensor Cartridge (SC2)

Specifies electrical, sensor element, physical, and regulatory data for SC2.

Sensor Element

Provides detailed specifications for various sensor elements.

Figures

Part Disposal

Notes and General Information

Intended Product Application

Defines the intended use of PolyGard®2 / µGard®2 devices.

Installers Responsibilities

Outlines the responsibilities of installers for proper setup and compliance.

Maintenance

Recommendations for regular inspection and maintenance of devices.

Limited Warranty

Details the warranty terms and conditions for the devices.