The instrument was manufactured according relevant norms and regulations. It must be used within its intended use. The hand detector probe 400DH may not be modified from the design or safety engineering. Modifications of any kind by the user will render the declaration of conformity This hand detector probe meets the requirements of the valid European and national regulations.
USER MANUAL 400DH 1.2. The company MRU The 400DH is manufactured by the MRU GmbH in Neckarsulm, Germany (founded in 1984), a medium sized company that specializes in developing, pro- ducing and marketing high quality emission monitoring analyzers. MRU GmbH...
Security and safety directions for the analyzer 2.1. Safety manual All general information and safety precautions of MRU products are listed in the supplied separate safety manual. Therefore, this manual must be read and observed before the first use of the ana- lyzer.
The hand detector probe 400DH alone does not support measurement. Each measurement function is implemented via the sensor to be plugged in. In this operating manual only the hand detector probe 400DH with the available in- terchangeable sensors is covered.
USER MANUAL 400DH 3.2. Terms and window designation function explanation Connect probe! In case of a communication error, check that the probe is connected to the device via AUX connector and that an interchangeable sensor is correctly plugged in. The serial number of the mounted sensor is displayed.
USER MANUAL 400DH Interchangeable sensors with technical specs 4.1. Leak detection on gas installations The change sensor HC400 is used to locate gas leaks from CH in installations. With the change sensor HC401 it is also possible to search for C...
USER MANUAL 400DH 4.2. Spillage test on flue gas systems The change sensor RM400 is used for locating leaks in flue gas pipes. Before measuring, remove the protective cap from the interchangeable sensor! Slowly guide the sensor along the points to be tested. If there is a leak, the meas- ured value changes and the flashing frequency of the red LED in the sensor foot in- creases with the increase in moisture on the sensor surface.
USER MANUAL 400DH 4.3. Verification of indoor climate The change sensor HM400 is used to check humidity, tempera- ture, air pressure and dew point indoors. With the sensor HM400 the measured values are displayed without preheating time. Use the arrow left/right selection keys to display the individual diagrams for each criterion and the total display of all values as an overview.
USER MANUAL 400DH 4.4. Non-contact temperature measurement The IR400 interchangeable sensor is used for non-contact temperature measure- ment. Aim the sensor at the surface to be measured. The measuring distance depends on the size of the surface to be measured, the closer the measurement becomes, the more accurate it becomes.
USER MANUAL 400DH 4.5. Leak detection on air conditioners The RF400 interchangeable sensor is used for leak detection on air conditioning units. The detected refrigerants are FCKW, HFCKW, FKW, HFKW and HFO. After the warm-up time of 55 seconds, the measuring window opens automatically and the measurement begins.