Instructions

2 Introduction
Fluke’s Hart Scientific Division’s 1620A is a low-cost, high-accuracy, digital
thermo-hygrometer. Its unique combination of features makes it suitable for a
wide variety of applications from laboratory to industrial ambient measure
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ment. Features of the thermo-hygrometer include:
•
Two channels measure ambient temperature to ±0.125 C and %RH to
±1.5%
•
Two sensor capability (second sensor optional), each measuring tempera
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ture and relative humidity; each is detachable, cable-extendable, and inter
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changeable, 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
• Visual and audio alarms for various alarm or fault conditions, alarm out-
put 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, numeri-
cally, 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
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2 Introduction