Service Cable
Cable AC3006 is used to connect the HFM53 to a USB port of a PC running the ROTRONIC HygroSoft software. Service cable AC3006 does not power the HFM53 and the transmitter must be separately powered when using this cable.
Location of the service connector (mini USB type)
WARNING: the service connector is a UART interface with a mini-USB connector type. Do not connect the service connector directly to the USB port of a PC or hub.
 |
The service connector is located on the left side of the PCB and can be accessed after removing the enclosure cover. |
Periodic calibration check of the probe
Both the Pt 100 RTD temperature sensor used in the probe and associated electronics are very stable and should not require any calibration after the initial factory adjustment.
Long term stability of the ROTRONIC Hygromer humidity sensor is typically better than 1 %RH per year. For maximum accuracy, calibration of the probe should be verified every 6 to 12 months. Applications where the probe is exposed to significant pollution may require more frequent verifications.