Fluke 1620A "DewK" Thermo-Hygrometer

Product Overview

The Fluke 1620A "DewK" is a high-accuracy, digital thermo-hygrometer suitable for laboratory and industrial applications. It supports two detachable, interchangeable sensors, each with self-contained calibration data. The device features a large LCD for graphical and numerical data display, on-board memory for 400,000 readings, and password-protected settings.

Technical Specifications

• Temperature Range: 0°C to 50°C
• Temperature Accuracy: ±0.125°C (calibrated, H model)
• RH Range: 0% to 100% RH
• Communications: RS-232, Ethernet LAN, optional 802.15.4 (ZigBee)
• Power: 12 VDC via external adapter, with 9V battery backup

Safety and Handling

Warning: Use only the provided AC adapter. Do not disassemble the adapter or the instrument. Handle sensors with care; they are fragile and sensitive to mechanical shock, fluids, and dust. Avoid overheating sensors beyond their recommended range.

Setup and Operation

To set up the unit, install the 9V backup battery, connect the sensors to the appropriate ports, and plug in the power adapter. The device performs a self-test upon power-up. Use the front panel buttons to navigate the menu system, configure display layouts, set measurement periods, and manage data recording. The device can be wall-mounted or used on a benchtop.

Maintenance and Troubleshooting

Keep the instrument clean using a damp cloth and mild detergent. Periodic sensor calibration is recommended. If the device displays errors, check sensor connections, ensure the power adapter is secure, and consult the troubleshooting section for specific error codes. If memory is full, the oldest data blocks are automatically overwritten.

Disposal

Dispose of used batteries and electronic equipment according to local regulations. Do not dispose of batteries in fire.