PORTABLE THERMOMETER-HYGROMETER DATA-LOGGER

The instrument measures:
-% U.R. Calculates the relative humidity
-D.P. Calculates the dew point
-g/m³ Quantity of water per m³ of air with reference to 0°C and a pressure of 1013 mbar
-°C, °F Temperature in °C or °F
- REL Relative measurements
- MAX Can record the maximum value over a given period
- MIN Can record the minimum value over a given period
- MED Can record the mean value over a given period.

The instrument is able to take and store up to 30.000 readings (memory 256 KB). Reading intervals may range from one per second up to a maximum of one every 12 hours. Each measurement is taken and then given, on a printer with serial input or a computer, with the date, hours and minutes.
The instrument has a serial output RS 232C with a baud rate configurable from 300 to 19.200 baud.
The instrument has fittings for the input of combined and interchangeable probes for the simultaneous measurement of temperature and relative humidity of the air, series HD 8501S...; it also has fittings (input B) for the input of series TP 870 probes for temperature alone.
The instrument has builtin functions of AUTO
POWER OFF, Hold and low battery indication.
The DO 9406 is an extremely versatile instrument; despite its many functions it is easy to use, even by unskilled personnel.