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TSI GM460

How to set up the TSI GM460

Below you'll see the step by step process for setting up the TSI GM460 as well as tips for troubleshooting and understanding model specific features. Check out guides on how to physically set up your Thiamis, and how to add a sensor in Environet.

Setup Instructions:

  1. Connect power to the Thiamis. There are two options:

    • Connect a 12V power supply to the 3-pole Euroblock connector

    • Connect a 5V power supply to either of the USB ports

  2. Connect the continuous-operation battery pack to the TSI GM460 (Details in step 4 below).

  3. Turn on the Real-Time Data mode on the TSI GM460.

  4. Connect the IrDA reader to the GM460 (details in step 6 of installation instructions below), and connect the USB from the IrDA reader to the USB port on the Thiamis.

  5. Use Environet to pair the GM460 with the Thiamis: Adding and Configuring Sensors

More detailed instructions for each step are below.

Smart Sensor Installation

Check the sensors are installed in the positions and configure accordingly. The diagram below shows the smart sensor positions, located on the left side of the device.

For example if an NO2 sensor is the installed in smart sensor position 1 slot then configure it for the OP1 channel on your sensor settings on the edit page for your connected Thiamis. Note: the OP1 and OP2 channels will only be configurable when this sensor is a Thiamis, and will be visible on the Sensor Configuration section of the Thiamis Configuration page. To find out more about these settings, please visit the article Adding and Configuring Sensors.

Installing the GM460 and Probe into Environmental Enclosure [Click to Expand]

NOTE: Disconnect power from the instrument. The instrument/enclosure SHOULD NOT have power during the installation!

NOTE: The images in this article show an older Thiamis, but the setup is the same for modern Thiamis devices. The only difference is that all USB-A ports have been replaced with USB-C ports on the modern devices.

  1. Using the two socket head cap screws and a 7/64″ ball driver, install the mounting bracket onto the front of the DustTrak photometer.
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  2. Push out the metal plug on the bottom of the enclosure and install the sealing gland. The nut should be on the inside.
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  3. Insert the plastic end of the GM460 probe into the sealing gland. Hand-tighten the outer nut to create a seal between the gland and the plastic tubing.
    ​Note: The GM460 probe is included with the GM460 product; it is not part of this kit.
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  4. Remove the current Li-Ion or Alkaline battery pack from the instrument and attach the continuous-operation battery pack (allows continuous operation when enclosure power is on).
    ​Note: It’s easier to remove/install battery packs without the protective rubber boot.
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  5. Install the Velcro strap over the rubber boot.
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  6. Attach the adhesive-backed Velcro piece to the IrDA reader and place it on the front of the GM460.
    ​Note: Ensure the black “eye” of the reader aligns with the GM460’s IR port!
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  7. Connect the sample probe to the top of the GM460.
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  8. Use the belt clip on the back of the GM460 to mount it to the front of the DustTrak photometer.
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  9. Connect the power supply to the DIN rail inside the enclosure.
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  10. Connect the provided USB cable to the Thiamis.
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  11. Connect the other end of the USB cable to the IrDA reader.
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  12. Refer to the GM460 manual for operation instructions and specifications.
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  13. Reapply power to the enclosure/instrument and turn on the GM460 using its POWER/ENTER button. (It does not power on automatically.)
    ​Note: Be sure that real-time streaming mode is enabled.
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  14. Use Environet to pair the GM460 with the Thiamis: Adding and Configuring Sensors
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Real-Time Data Function

Ensure RTD real time data function mode is on:

NOTES

Complete these steps prior to installing the GM460 into the environmental enclosure!

When the GM460 has its real-time streaming mode enabled, it will not log data onto its internal memory!

  1. Take the GM460 to a non-hazardous location and turn it off, if it is on.

  2. Press and hold the ▲AIR and SHIFT ▼(PANIC) buttons, then press and hold the POWER/ENTER button. When you hear a beep, release the buttons.

  3. Use the ▲AIR and SHIFT ▼(PANIC) buttons to put the cursor in front of MAINTENANCE and press and release the POWER/ENTER button. A password screen will appear.

  4. Enter the password for Maintenance Mode 2 by using the ▲AIR and SHIFT ▼(PANIC) buttons to select each password number and then pressing and releasing the POWER/ENTER button to enter it and move on to the next number until all of the numbers are entered.
    ​Note: The default password for Maintenance Mode 2 is 2014

  5. Use the up or down arrow button to scroll to the STREAMING menu item. It will be after HC SELECT.

  6. Press and release POWER/ENTER.

  7. Use the up and down arrow buttons to toggle between ON and OFF. Set to ON for streaming operation or OFF for standard operation and to use with the datalogging PC program.

  8. Press and release POWER/ENTER.

  9. Scroll to the START MEASURE menu item.

  10. Press and release POWER/ENTER to start up the instrument.
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Interference

The following material comes from the GM460 manual: appedix D-2, about interference between gases.

Although the GM460 can support up to two ESS-03 sensors, many combinations are impractical for various reasons including sensor cross sensitivity to other gases.

The table below indicates some of the gases that will cause an increased gas reading for the affected sensor. For example, if you are attempting to detect HCN but H₂ is also present, the instrument’s HCN reading will be higher than the environment’s actual HCN level.

Table 18: Postitive Interference

Sensor

Affected By

Cl₂

HCl
SO₂

HCN

H₂

SO₂

SO₂

H₂

The table below indicates some of the gases that will cause a negative response and a decreased reading for the affected sensor. For example, if you are attempting to detect SO₂ but NO₂ is also present, the instrument’s SO₂ reading will be lower than the environment’s actual SO₂ level.

Table 19: Negative Interference

Sensor

Affected By

HCN

NO₂

NH₃

HCl

NO₂

NO₂

CO
SO₂

Errors

If the GM460 is not reporting, check the Thiamis configuration page for any listed Errors. Errors can be found in Sensor Configuration section of the Thiamis Configuration Page, and will be highlighted in RED.

Timeout Error

A timeout occurs when the GM460 has not responded to the requests made by the Thiamis and has timed out. It will continue to attempt communication but you can run through the general Troubleshooting Sensors steps to address common problems.

Sensor Manufacturer Support Materials

GM460 Operator's Manual

GM460 Mounting Installation Guide

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