This document introduces the use of the HYGROMER® - MP 400 A weather sensor, including operating instructions, installation methods, maintenance and maintenance.
This manual provides operating instructions for the ROTRONIC MP 400A Meteorology Probe, a precision sensor for measuring humidity and temperature. The device utilizes the ROTRONIC-HYGROMER® IN-1 sensor and an RTD Pt 100 temperature sensor, leveraging over 25 years of experience from the manufacturer. It is designed for meteorological applications and similar demanding environments such as tunnels, highways, and airports. The probe features a linear current output and is protected against unintentional moisture ingress, except for the sensor element itself. This manual is written in German.
| Humidity Sensor Type | ROTRONIC-HYGROMER® IN-1 |
|---|---|
| Temperature Sensor Type | RTD Pt 100 1/3 DIN |
| Humidity Range | 0...100 %rF |
| Temperature Range | -40...+60 °C |
| Humidity Time Constant | < 10 s |
| Temperature Time Constant | < 15 s |
| Standard Connector | 4-pole Tuchel connector |
| Weight | 70 g |
The factory warranty covers material and manufacturing defects for 12 months from the delivery date.
The sensor is ready for operation half a second after power is applied, but the medium and sensor must be in thermal and humidity equilibrium for reliable measurement, which can take up to 30 minutes.
Additional wind protection is required when air speed exceeds approximately 20 m/s to prevent damage to the sensors.
The sensors are calibrated at 35 %, 80 %, and 10 %rF to ensure optimal accuracy over the full measurement range.