Aspiration psychrometer according to Assmann with LCD display and flash memory

Standard meter for precise humidity and air temperature measurements. By double radiation protection of the thermometer of the radiation impact is greatly reduced. An aspirator ventilated thermometer both vessels with the required minimum air velocity of> 3 m / s. The constant ventilation of the thermometer a precise determination of the temperature difference (psychrometric difference) allows between a dry and a wet thermometer. From the psychrometric difference consistent humidity parameters can be derived mathematically. For temperature determination precision thermometer verwendet.Die measurement time period is about 8 minutes at a ventilation rate of 3m / s.

1. The Psychrometeric Sensor

new: Automatic air pressure compensation of the air pressure-dependent humidity variables with digital air pressure sensor, built into the ALMEMO® D6 connector.
- new: Humidity calculation based on the formulas according to Dr. Sonntag taking into account the enhancement factor according to W. Bögel (correction factor fw(t,p) for real mixed gas systems):
The measuring range and the accuracy of the humidity variables are thereby considerably increased.
- New: Humidity quantity: Absolute humidity in g/m³.
- High-precision Ntc sensors for dry bulb temperature and wet bulb temperature.
- Measurement of temperatures with a dedicated 24bit AD converter in the ALMEMO® D6 connector.
- Determination of the humidity parameters from the 3 primary measuring channels
(real measured variables):
Dry bulb temperature, wet bulb temperature and air pressure.
- Freely selectable measured variables:
4 measuring channels are programmed (ex works):
Dry bulb temperature (°C, TT,t), wet bulb temperature (°C, HT, tw),
Relative humidity (%H, RH, Uw), Air pressure (mbar, AP, p)
Alternatively, other humidity variables can be selected:
Dew point (°C, DT, td), Mixture (g/kg, MH, r), Absolute
humidity (g/m³, AH, dv), vapour pressure (mbar, VP, e), enthalpy
(kJ/kg, En, h).
The configuration is done directly on the PC with the USB adapter cable
ZA 1919 AKUV (see chapter Network technology).    

The indicator has the following characteristics:

    - Good measuring accuracy, measuring rate up to 10 measurements per second (pug)
    - Over 65 standard measuring ranges
    - Support of ALMEMO® connectors with multi-point adjustment Special linearisation and special measuring ranges
    - Graphic display with white illumination, simple and convenient operation via 4 softkeys and cursor block
    - Clear and easy-to-understand menu system 3 measuring menus (1 menu can be freely configured by the user from 50 functions),
    Measured values are displayed numerically, 1 to 12 measured values can be displayed in two sizes or graphically in bar chart form.
    - Intelligent sensor measurements with sensor-specific functions old cold junction compensation, temperature compensation and atmospheric pressure compensation
    - Measurement functions measured value, zero setting, setpoint adjustment
    - Function menus maximum value, minimum value, memory sufficient for 99 measured values, average value over time / single values / measuring points, smoothing, volume flow with average point measurement, two-point calibration, scaling, data logger with configuration menus
    - Option VN Volume flow determined from matrix measurement according to DIN EN 12599
    - Programming menus for clear and easy-to-understand sensor programming, range, units, designation, up to special functions, configuration of the unit parameters and the output modules Modules
    - Choice of languages: German, English, French
    - 2 ALMEMO® output sockets, suitable for digital interfaces, analogue output, trigger input, alarm contacts, memory card
    - External memory connection with micro SD can be easily plugged in
    - Sleep mode for long-term recording           

The main features of the Aspiration psychrometer Assmann, small version are:

• Good value for money
• high accuracy
• usable as normal humidity
• precision thermometers
• high reliability
• easy handling

Accessories:

• Humidifying and water tank,
• thermometer,
• psychrometer and
• Transport containers.