Fluke Calibration 1621A-H-156 DewK Thermo-Hygrometer Kit, High Accuracy

Product Highlights

• The “DewK” Thermo-Hygrometer, High-Accuracy
• Operating Range: 0 °C to 50 °C (32 °F to 122 °F); 0 %RH to 100 %RH
• Calibrated Temperature Accuracy: ± 0.125 °C from 16 °C to 24 °C (± 0.225 °F from 60.8 °F to 75.2 °F)
• Calibrated RH Accuracy: ±1.5 %RH from 20 %RH to 70 %RH
• Delta Temperature Accuracy: ± 0.025 °C for ± 1 ° changes within 15 °C to 35 °C
• (± 0.045 °F for ± 1 ° changes within 59 °F to 95 °F)
• Temperature Resolution: User selectable up to 0.001 °C/°F on front-panel display (0.01° recorded)
• Delta Humidity Accuracy: ± 1.0 %RH for ± 5 % changes within 20 %RH to 70 %RH
• RH Resolution: User selectable up to 0.01 % on front-panel display (0.1 % recorded)
• Inputs: Up to two sensors, measure temperature and relative humidity, detachable, cable-extendable, interchangeable, self-contained calibrations, may be assigned unique 16-character identifications
• Display: 240 x 128 graphics monochrome LCD, displays password-protected temperature/humidity data graphically, numerically, and statistically (one or both channels); 16 pre-defined, user-changeable screen setups
• Memory: 400,000 typical individual date/time-stamped readings
• Alarms: Password-protected visual, audible, and external alarms for temperature, temperature rate, RH, RH rate, and fault conditions
• Alarm Port Output: 2.5 mm two-conductor subminiature plug, 0 V normal, 11 to 12 V active, sources up to 20 mA
• Connectivity: Ethernet, RS-232, RF (optional)
• Ethernet: RJ45 jack, 10 Base-T or 100 Base-TX; static or dynamic (DHCP client) IP address assignment
• Web Page: Embedded web page interface features: instrument identification, measurements, password-protected terminal page; can be disabled
• Wireless Option: Requires wireless modem. 802.15.4 (underlies Zigbee), 2.4 GHz frequency, 1 mW transmit power, 30 m (100 ft) typical unobstructed range; can be disabled
• Mounting: Wall mounted (hardware included) or set on a bench top
• Power: 12 V dc from external 100 to 240 V dc power supply
• Battery Backup: Standard 9 V battery enables continued measuring during power disruptions
• Size (DewK) (HxWxD): 125 mm x 211 mm x 51 mm (4.9 x 8.3 x 2.0 in)
• Size (Sensors) (LxDia): 79 mm x 19 mm (3.1 x 0.75 in)
• Weight: 0.7 kg (1.5 lb)

Each Unit Includes

• Two high-accuracy sensors
• Wall mount bracket
• RS-232 cable
• 7.6 m [25 ft] sensor extension cable
• Sensor wall mount bracket
• Sensor case
• 9936A LogWare III single-PC license
• Certificate of NIST-traceable NVLAP accredited temperature and humidity calibration included; As Found and As Left data supplied at three temperature points and three humidity points each at 20 °C (68 °F)

The high-accuracy sensor (“H model) reads temperature to ± 0.125 °C over a calibrated range of 16 °C to 24 °C. Relative humidity readings are to ± 1.5 % RH from 20 % RH to 70

All Fluke 1620A (DewK) thermo-hygrometer sensors come with NVLAP accredited certificates of calibration for both temperature and humidity, complete with data and NIST traceability.

Ethernet capability

With its built-in Ethernet RJ45 jack, multiple Fluke 1620A (DewK) thermo hygrometers can be monitored from the same screen using LogWare 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.

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 Fluke 1620 (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 Fluke 1620 (DewKs), and the recalibration of sensors doesn’t require an accompanying Fluke 1620 (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 from Fluke Calibration. Spare sensors may also be purchased as a kit, which includes a wall mounting bracket and a 25-foot extension cable.

The DewK thermo hygrometer and humidity monitor 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 Fluke 1620 (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 LogWare III. The Fluke 1620 (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 Fluke 1620 (DewKs)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 Fluke 1620 (DewKs)thermo hygrometer and humidity monitor 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.