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Thunder scientific 4A-1MP psychrometer / hygrometer
Thunder Scientific 4A-1MP Pschrometer
* Description: The Thunder Scientfici 4A-1MP Physcrometer proceeded the now current model 5A-1MP. However, the differences between the two are minor. Per the factory, differences between the two are:
* "The major difference is the fan motor used in the probe. The current 5A-1MP is designed with a brushless DC motor, the original 4A-1MP used a different motor."
* "The mother board electronics have been redesigned for updated key board entry and IEEE-488 interface."
* The Model 4A-1MP Laboratory Reference Psychrometer provides extremely accurate measurements of relative humidity, dew point, and air temperature. The 4A-1MP is portable, needs no special installation, is simple to use, reliable, and requires very little service to maintain its high accuracy over a long period of time. When properly maintained and utilized, the psychrometer s accuracy can exceed that of any other type of hygrometer in most humidity measuring situations. The 4A-1MP attains its highest accuracy near saturation.
The 4A-1MP Laboratory Reference Psychrometer may be used for quick and easy measurements in environmentally controlled rooms, environmental test chambers, and manufacturing areas where humidity sensitive products and materials are produced, etc. It may be used to measure the atmospheres directly or used to test the humidity monitoring instrumentation controlling these areas.
The 4A-1MP probe can be placed directly into the environments to be measured without any special preparation. Measurements at high relative humidities (dew points) and at high temperatures can be made quickly and easily as the psychrometer does not require a special heated sampling system.
To operate the instrument, simply fill the probe s water reservoir, connect the cable, and apply power to the instrument. When the probe s aspirator is enabled, the psychrometer will indicate an accurate relative humidity, dew point, and temperature within 60 seconds.
Printer output is user programmable from one minute to 24 hour print intervals. In the Auto Mode, the probe aspirator will automatically run prior to a sample printout. After printout, the aspirator is disabled until the next sample period is reached. Specifications include:
Relative Humidity Accuracy (Guaranteed): ................................. 1.0% RH
Relative Humidity Accuracy (Typical): ......................................... 0.25% RH
Relative Humidity Range: ............................................................ 1 to 100% RH
Relative Humidity Resolution: ...................................................... 0.01% RH
Temperature Accuracy (Guaranteed): ........................................ 0.1 C
Temperature Accuracy (Typical): ................................................ 0.04 C
Temperature Range: ................................................................... 0 to 100 C
Temperature Resolution: ............................................................. 0.01 C
Dew Point Accuracy (Typical): ..................................................... 0.25 C
Dew Point Range: ........................................................................ -20 to 95 C
Dew Point Resolution: .................................................................. 0.01 C
* For reference, a brand new model 5A-1MP retails for $8750. Grab this one for thousands less.
* Other Comments / Notes: None
* Warranty: 5-day DOA. (See below for further details).
* Calibration: Thunder Scientific can calibrate this unit for $1200. If you elect to have them do the calibration, we will work with you to extend the ROR period to cover the time it takes them to perform the calibration.
