Fluke 1620A-S-156 Standard-Accuracy Kit: Dewk Thermo-Hygrometer, 2 Sensors, Bracket, RS-232 Cable

Fluke 1620A-S-156 Standard-Accuracy Kit

The Fluke Hart Scientific 1620A-S-156 DewK Thermo-Hygrometer is a high-accuracy environmental monitoring solution that measures temperature, humidity, dew point, and heat index for laboratories, cleanrooms, calibration facilities, and industrial environments. The standard-accuracy DewK sensor ("S" model) delivers temperature accuracy of +/-0.25 °C (15 °C to 35 °C) and humidity accuracy of +/-2% RH (20% RH to 70% RH), with accredited, NIST-traceable calibration certificates included.

Designed for continuous facility monitoring, the 1620A-S-156 supports Ethernet and wireless connectivity for remote data collection and recording. When used with LogWare III software (license required), it provides alarm notifications for changing environmental conditions and simplifies compliance documentation.

In addition to temperature and humidity measurements, the instrument calculates dew point, heat index, rates of change, and min/max statistics, while storing daily summary data for up to 60 days to support trend analysis and environmental control.

Features

• 120V and 50/60 Hz (included as option -156)
• 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
• Two channels measure ambient temperature to +/-0.125 C and %RH to +/-1.5%
• Two sensor capability (second sensor optional), each measuring temperature and relative humidity; each is detachable, cable-extendable, and interchangeable, with self-contained calibration; each may be assigned a unique 16-character identification
• Display resolution is user selectable up to 0.001 C and 0.01% RH
• On-board memory holds up to 400,000 time/date-stamped readings
• Serial RS-232 interface for reading measurements and access to settings
• Ethernet LAN interface provides TCP/IP communicatins and embedded HTML web page for reading measurements over a network
• Optional wireless RF 802.15.4 (ZigBee) for remote operation (Model 2633-RF)
• Visual and audio alarms for various alarm or fault conditions, alarm output port
• May be wall mounted or set on a bench top
• Detachable sensors contain their own calibration data for easy recalibrations
• Optional software logs in real-time or shows graphical/statistical data
• Password protection of settings
• Large LCD displays temperature and humidity data graphically, numerically, and statistically; 16 pre-defined, user-changeable screen setups
• Power 12 VDC from external 110-240 VAC to DC converter
• Uses a standard 9V battery backup to allow continued measuring during power interruptions

Fluke 1620A-S-156 Dewk Thermo-Hygrometer

1. What is the Fluke Hart Scientific 1620A-S-156 used for?
   The Fluke Hart Scientific 1620A-S-156 is a high-accuracy thermo-hygrometer providing NIST-traceable measurements and is used to continuously monitor temperature, humidity, dew point, and related environmental conditions in laboratories, calibration facilities, cleanrooms, manufacturing plants, and other controlled environments.
2. Can the 1620A operate on battery power?
   No. The unit requires primary AC power through its external power supply. However, it does feature an internal backup battery that maintains measurement tracking and data logging during power disruptions using a standard 9V battery.
3. What is the difference between the 1620A-S (standard accuracy) and 1620A-H (high accuracy) models?
   They use the same base display and controller, but are equipped with different interchangeable sensor grades: -S is +/- 0.25C over range of 15C to 35C and +/-RH 2% while -H is +/- 0.125C over range of 16C to 24C and +/-RH 1.5%