Fluke Calibration 1620A Calibration Instruments
  • Fluke Calibration 1620A Calibration Instruments

Fluke Calibration 1620A


"DewK" Thermo-Hygrometer Base Unit



The Fluke MET/CAL compatible 1620ABASE "DewK" Thermo-Hygrometer Base Unit revolutionizes environmental monitoring for calibration laboratories.

Now users can easily monitor and record conditions throughout the entire facility with the DewK's new Ethernet and wireless connections, and set the upgraded LogWare III software (not included) to notify users immediately of changing conditions.

Users will still have the superior convenience, dependability, and NIST-traceable accuracy of a 1620, but the 1620A will give users added accessibility and peace of mind.

Ethernet and wireless capability

The 1620A-BASE gives users all the communications options they expect, and then some. With its built-in Ethernet RJ45 jack, multiple DewKs can be monitored from the same screen using our new LogWare III client-server software (not included). Ethernet also gives users the possibility for remote connectivity over the internet, so they can monitor critical conditions while they are away.

Cables running along the floor can be a safety hazard, and cables hanging from the ceiling and walls are an eyesore. With the 1620A-BASE, users can connect their computer through an RF modem up to 100 ft away, without the clutter of all the extra cables.

Finally, if a printout is necessary, send data to a printer through the RS-232 interface in real time.

Math and statistical functions

In addition to temperature and humidity, the 1620A-BASE calculates dew point, heat index, and rates of change for both temperature and humidity, without the need to buy additional software. Min, max, and a variety of other statistics are also calculated and can be shown onscreen. Daily summary statistics, including min, max, and maximum rates of change are stored for the most recent sixty days.

Calibrated sensors

Having inputs for two sensors (not included), each measuring both temperature and relative humidity, one DewK can monitor two locations at the same time. Both sensors can be run via extension cables to remote locations up to 100 feet away, or one sensor can be directly mounted to the top of the DewK.

Each sensor is calibrated for both temperature and humidity. The calibration constants assigned to the sensors reside in a memory chip located inside the sensor housing, so sensors may be used interchangeably between different DewKs, and the recalibration of sensors doesn't require an accompanying DewK.

Sensors may also be assigned a unique identifier (up to 16 characters) to facilitate record keeping by matching the sensor identifier with the collected data. Each 1620A-BASE ships with one sensor, with additional sensors available from Fluke. Spare sensors may also be purchased as a kit, which includes a case for the sensor, a wall mounting bracket, and a 25-foot extension cable.


The 1620A-BASE has enough on-board memory to store up to 400,000 date-and time-stamped data points. That's two years' worth of data for both measurements from two sensors if readings are taken every ten minutes.

Alarms and battery backup

Alarm settings can be set up quickly in the 1620A-BASE based on temperature, the rate of change in temperature, RH, the rate of change in RH, and instrument fault conditions. Alarms can be both visual (flashing display) and audible (beeping). Likewise, alarm settings can be set up and events triggered in LogWare III. The 1620A-BASE is also equipped with a 0 to 12 volt alarm output that can trigger a process control system.

A backup battery shuts down the 1620A-BASE's display but maintains measurements for up to 16 hours in the event of a power failure.

One very cool display

Want to view data from across the room? Want to view data from two temperature and two humidity inputs simultaneously? Want to view data graphically, statistically, or both? At the same time? The DewK does everything a user could want: up to sixteen different display setups can be stored and recalled at the touch of a single button; and all 16 can be easily modified.

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