Problem situations - HMP1 - HMP3 - HMP4 - HMP5 - HMP7 - HMP8 - HMP9 - HMPX - MMP8 - MMPX - TMP1 - TMPX

HMP Series with MMP8 and TMP1 User Guide

Document code
M212022EN
Revision
K
Language
English
Product
HMP1
HMP3
HMP4
HMP5
HMP7
HMP8
HMP9
HMPX
MMP8
MMPX
TMP1
TMPX
Document type
User guide
Table 1. Troubleshooting table
Problem Possible cause Solution
Measurement output seems incorrect Installation location is not representative of actual conditions you want to measure Verify the installation location and relocate the probe if necessary.
Heat conduction along probe head and cable is interfering with measurement accuracy Follow the installation recommendations for cases when temperature of measured environment differs greatly from ambient. See Installation.
Probe is in need of adjustment Calibrate and adjust the probe.
Probe status indicator LED is red Probe is in error state Connect the probe to Insight software or an Indigo transmitter and read the error message(s). See Vaisala Insight software and Error messages.
Probe status indicator LED is off even though power is on Probe model is HMP1, or HMP3/HMP7 with a 0.15‑m (0.49‑ft) probe connection cable. To prevent the warming of the indicator LED from causing a slight measurement error, HMP1 probes keep the indicator normally off (even when power is on). If the probe is in error state, the red LED is shown. The same applies to HMP3 and HMP7 probes with a 0.15‑m (0.49‑ft) probe connection cable.
Values of measurement parameters stop changing for a few minutes Probe is performing a sensor heating function such as sensor purge or waiting for the sensor to cool down Wait for the function to complete and measurement parameters to be available again.