Vaisala DRYCAP® Handheld Dew Point Meter DM70 measures dew point temperature accurately in measurement range −60 °C … +60 °C (−76 … +140 °F), depending on the probe model. DM70 consists of 2 main units: the MI70 indicator and DMP74 probe, models A, B, or C.
DM70 can be used with an optional sampling cell to measure process dew point. It can also be used as a tool for reading the output of fixed Vaisala dew point transmitters, such as DMT242, DMT132, DMT143, DMT152, and DMT340.
DM70 measures the following parameters:
| Parameter | Abbreviation | Metric unit | Non-metric unit |
|---|---|---|---|
| Relative humidity | RH | %RH | %RH |
| Temperature | T | °C | °F |
| Dew point/frost point temperature 1 | Td/f | °C | °F |
| Dew point temperature 2 | Td | °C | °F |
| Dew point in the atmospheric pressure | Td | °C atm | °F atm |
| Dew point/frost point in the atmospheric pressure | Td/f | °C atm | °F atm |
| Absolute humidity | a | g/m3 | gr/ft3 |
| Mixing ratio | x | g/kg | gr/lb |
| Water concentration / Water mass fraction | H2O | ppmv / ppmw | ppmv / ppmw |
This Quick Guide introduces the features of the MI70 indicator and the basic measurement procedure with the DM70 meter.
For the full DM70 operating instructions, specifications, and more information on sampling cells, download DM70 User Guide (M010091EN) from www.vaisala.com/dm70.