USER MANUAL
400DH
MRU GmbH, D-74172 Neckarsulm
11 / 14
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.
Functions in the Context menu
function
explanation
Max = 0 (Key F3)
The value Max is set to zero.
Setting
Setting units
Printout (Dr)
Printout is generated, a printer is required for this
function.
Meas. menu (ESC)
Exit measuring program
Info
The information (sensor name, page number, firmware
version) about the sensor is displayed here.
Choice ( >>) ( <<)
„Arrows right/left“
Display switching between general view and view of
the individual criteria as individual diagrams
Settings:
Criterion
Adjustable units
Humidity
% (relative), g/m
3
(absolute)
Dew point
° C, ° F
Air pressure abs.
hPa, inHG, mmHG, mmH
2
O
Temperature
° C, ° F
Technical Specification:
Sensor HM400
Criterion
range
resolution
Humidity
0 … 100 % RH
0,1 %
Temperature
0 … +60 °C
0,1 °C
Air pressure
300 … 1.100 hPa
0,1 hPa
Dew point
calculated from humidity and temperature