Use the RS485 kit for retrofitting (order number HA010605), see the data sheet and operation manual of your specific E+E product.

The device indicates an error according to NAMUR NE43. For details, please see the user manual of your specific E+E product.

The device has one GND connection for the power supply, an analogue output GND and an interface GND, see connection diagram in the user manual. The analogue output GND and the interface GND carry only the current output resp. interface current, which results in a more stable signal compared to a mix GND connection.

Press 2x ► | 5x ◄ | 1x ▲ | 3x ◄ | 1x ▼ | 1x ► then select the "Configuration menu" and press ENTER. Scroll down to “Diagnosis”, press ENTER and scroll down to “Password protection” here you can see the previously set password.

Connect the device via the USB service interface to a PC running PCS10 Product Configuration Software and read out the communication setting.

Alternative for device with display: the display configuration menu has a section for Modbus settings (RS485, Modbus RTU) or IP settings (Ethernet, Modbus TCP) where you can see the actual setting or change it.

Connect the device via the USB service interface to a PC running PCS10 Product Configuration Software and see at the section "Log data download" for the data memory status.

Remote probe types can be retrofitted with an Ethernet interface using HA010606, see data sheet and operation manual of your specific E+E product.

The measured data logged by the device can only be downloaded via the USB service interface to a PC running the PCS10 Product Configuration Software.

High dew point means the difference between the ambient temperature and the dew point temperature is lower than 3 °C (5,4 °F), which corresponds to RH >85 %.

The appropriate product is the HTS801-M4T7. The device features a heated sensing element and probe body (dual heating system).

Due to the direct contact of the HTS801 sensor element with the measurement medium, chemical contaminants (e.g. VOCs / vapors) can penetrate the sensor polymer and cause drift effects.
Automatic ReCovery (ARC) is used to remove this chemical contamination and thus eliminate possible drift effects of the RH /T sensing element. This is accomplished by intense heating of the sensing element.

Deviations due to chemical contamination and how fast they occur depend mainly on the concentration of the chemicals, the duration of the contamination, the temperature, and the type of chemicals.
The ARC trigger interval must be determined according to the drift response time and tolerable measurement errors. As a starting point, it is recommended that ARC be triggered every 24 hours. From there, the intervals can be optimized in a range from 1 hour to once per week. Additionally using the ARC module or Modbus commands the function can be triggered at or after a certain process step.

No. For low Dew Point measurement EE355 / EE371 are the right products, which have an auto-calibration function to ensure ±2 °C Td accuracy. The HTS801 calculates the Td values down to -80 °C according to its possible temperature range and is able to scale its analogue outputs accordingly. The HTS801 Td accuracy results from its RH and T accuracy at the operating point. The E+E Humidity calculator helps to determine the Td accuracy.