Accuracy
The standard-accuracy sensor (“S” model) reads temperature to ±0.25
°C over its calibrated range of 15 °C to 35 °C. Relative humidity
readings are to ±2% RH from 20% RH to 70% RH.
All DewK sensors come with NVLAP accredited certificates of
calibration for both temperature and humidity, complete with data
and NIST traceability.
Ethernet and wireless capability
With its built-in Ethernet RJ45 jack, multiple DewKs can be
monitored from the same screen using Log Ware III client-server software. Ethernet also gives you the possibility
for remote connectivity over the internet, so you can monitor
critical conditions while you’re away.
Cables running along the floor can be a safety hazard, and cables
hanging from the ceiling and walls are an eyesore. With the DewK,
simply connect your computer through an RF modem up to 100 ft away,
without the clutter of all the extra cables.
If you need a printout, send data to a printer through the RS-232
interface in real time.
Math and statistical functions
In addition to temperature and humidity, the DewK calculates dew
point, heat index, and rates of change for both temperature and
humidity. Min, max, and a variety of other statistics are also
calculated and can be shown on-screen. Daily summary statistics,
including min, max, and maximum rates of change are stored for the
most recent sixty days.
Calibrated sensors
With inputs for two sensors, 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 by Fluke Calibration. 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 DewK ships with one
sensor, with additional sensors available directly from your local
Fluke Calibration sales representative, or directly from Fluke Calibration. Spare sensors may also be purchased from Fluke Calibration as a
kit, which includes a case for the sensor, a wall mounting bracket,
and a 25-foot extension cable.
Memory
The DewK has enough on-board memory to store up to 400,000 date-
and times 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 DewK 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 Log Ware III. The
DewK is also equipped with a 0 to 12 volt alarm output that can
trigger a process control system.
A backup battery shuts down the DewK’s display but maintains
measurements for up to 16 hours in the event of a power failure.
Large, easy-to-read 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 you could want—or at least everything we could
think of. 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, so you get exactly what you want.
