Configuring environment settings with Indigo80 handheld indicator - HMP1 - HMP3 - HMP4 - HMP5 - HMP7 - HMP8 - HMP9 - HMPX - MMP8 - MMPX - TMP1 - TMPX

HMP Series with MMP8 and TMP1 User Guide

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User guide
  • Probe connection cable

For optimal measurement accuracy, you can use the Indigo80 handheld indicator to give additional information about the connected probe’s measurement environment.

For example, you can:

  • Configure the pressure compensation setting for your probe
  • Enable temperature compensation from another Indigo-compatible probe that has a temperature output. For example, you can enable TMP1 to function as the temperature source for HMP7.
The environment settings available through Indigo80 correspond to the environmental compensation settings of the probe. Therefore, Environment settings and Settings > Compensation setpoints are interconnected: the configuration set in either menu is applied to both.
  1. Connect the probe(s) to the indicator.
  2. Open the main menu by pressing .
  3. Select Devices. If you have more than one device connected to the indicator, make a further selection between the devices.
  4. Select Environment settings to access the settings for your probe.

    The available environment settings depend on the probe and probe firmware version.


    Value for pressure compensation. The entered value is persistent and remains unchanged at device restart.


    This setting allows the probe to use a temperature reading from another device instead of its own temperature reading. An external temperature source is needed when condensation prevention functions of the probe are active, as they will also heat the temperature sensor of the device. Indigo80 can link a temperature measurement from another probe to this setting and update it in real time.

    Some probe firmware versions may allow a value to be entered manually. This is not recommended as the value must correspond to the temperature of the measurement environment as accurately as possible.

    A manually entered value is cleared at device reset. A value read from another probe is persistent: when you disconnect and then reconnect the same probes to the same ports in Indigo80, Indigo80 will continue reading the temperature value from the previously selected probe. The same applies also when you restart Indigo80 with the same probes connected.

  5. Select a setting from the list, for example, Pressure.
    1. Select the unit, if prompted.
    2. Use the arrow buttons to set the desired value, and then select OK or Set.

      You can also select to read the value from another probe connected to the indicator, provided that the probe can output the required compensation parameter. Press to highlight the Read value from field, and then press to select the other probe as the source of the value.

      For Temperature, always set the temperature value to be read from another probe. Do not set the temperature value manually. Make sure that both probes are in the same environment to get the most accurate measurement values.
  6. Exit the menu by pressing or return to the main menu by pressing .