If you need to verify that the signal from the HMT370EX transmitter's analog output channel is correct, you can force the output of the channel to a specific value and measure the output level with a multimeter.
The analog output level tested can be carried out either with the local display interface or using Vaisala Insight PC software.
| CAUTION
The transmitter body enclosure must not be opened in an explosion hazardous area, unless a safe work permit has been issued in accordance with the standard IEC 60079-14. Either remove the transmitter from the hazardous area before opening the enclosure, or ensure that an IEC 60079-14 compliant safe work procedure has been implemented in the hazardous area. |
| Always use an Ex compliant multimeter. The output parameters of the multimeter must be compatible with the input parameters of the transmitter. |