1620A Digital Thermometer-Hygrometer
The most accurate temperature and humidity graphical data logger on the market
The Fluke 1620A (DewK) thermo hygrometer and humidity monitor measures temperature to +/- 0.125°C and humidity to +/- 1.5% on two channels, and displays it on a big, clear screen. Ethernet, wireless (optional), or RS-232 will allow you to network as many Fluke 1620s (DewKs) as you’d like. And the LogWare III software will allow real-time logging of multiple Fluke 1620s (DewKs), data storage to your computer and seamless integration with MET/CAL® software.
The high-accuracy sensor (“H model) reads temperature to +/- 0.125°C over a calibrated range of 16°C - 24°C. Relative humidity readings are to +/- 1.5% RH from 20% RH to 70 % RH. The standard-accuracy sensor (“S model) reads temperature to +/- 0.25°C over its calibrated range of 15°C - 35°C. Relative humidity readings are to +/- 2% RH from 20% RH to 70% RH.
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.
• Superior accuracy
• Network enabled
• Powerful logging and analysis tools
• Two interchangeable calibrated sensors
• Huge memory
• Upgraded software
| Operating Range | 0°C - 50°C (32°F - 122°F) 0% RH - 100% RH |
| Calibrated Temperature Accuracy (“H” Model) | +/- 0.125°C from 16°C - 24°C (+/- 0.225°F from 60.8°F - 75.2°F) |
| Calibrated temperature Accuracy (“S” Model) | +/- 0.25°C from 15°C - 35°C (+/- 0.45°F from 59°F - 95°F) |
| Calibrated RH Accuracy (“H” Model) | +/- 1.5% RH from 20% RH - 70% RH |
| Calibrated RH Accuracy (“S” Model) | +/- 2 % RH from 20% RH - 70% RH |
| Expected Extrapolated Performance (Uncertified) | +/- 0.5°C (+/- 0.9°F) outside calibrated range +/- 3% RH outside calibrated range |
| Delta Temperature Accuracy | +/- 0.025°C for +/- 1° changes within 15°C - 35°C (+/- 0.045°F for +/- 1° changes within 59°F - 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 - 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 - 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 VDC from external 100 - 240 VDC power supply |
| Battery Backup | Standard 9 V battery enables continued measuring during power disruptions |
| Size (DewK) (H x W x D) | 125 mm x 211 mm x 51 mm (4.9 in x 8.3 in x 2.0 in) |
| Size (Sensors) (L x Dia) | 79 mm x 19 mm (3.1 in x 0.75 in) |
| Weight | 0.7 kg (1.5 lb) |
| Calibration | 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); Complies with NCSL/ISO/IEC 17025:2000 and ANSI/NCSL Z540-1-1994 |
| LogWare III (Optional Software) | Requirements include: Microsoft® Windows® 2000 (SP4) or XP (SP2) operating system, IBM compatible Intel Pentium® IV 1 GHz PC processor or better, 512 MB RAM (1 GB or more recommended), 200 MB HDD space for installation (additional free space recommended for data storage), CD-ROM drive for installation. |
| Fluke Calibration 1620A Digital Thermometer-Hygrometer - Data Sheet 1.8 MB |
| Fluke Calibration 1620A Digital Thermometer-Hygrometer - Manual 1.1 MB |
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