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3
Specifications and Environmental
Conditions
3.1
Specifications
Temperature Range
Temperature Accuracy
("H" Model)
Temperature Accuracy
("S" Model)
Delta Temperature
Accuracy
Temperature Display
Resolution
RH Range
RH Accuracy
("H" Model)
RH Accuracy
("S" Model)
Delta Humidity
Accuracy
RH Display Resolution
Inputs
Display
Memory
Alarms
Alarm port output
Communications
Ethernet
Wireless Range
Enclosure
Power
Battery Backup
Operating Range
3 Specifications and Environmental Conditions
0°C to 50°C
16°C to 24°C (60.8°F to 75.2°F): ±0.125°C (±0.225°F) [calibrated]
0°C to 16°C (32°F to 60.8°F): ±0.5°C (±0.9°F) [uncalibrated typical]
24°C to 50°C (75.2°F to 122°F): ±0.5°C (±0.9°F) [uncalibrated typical]
15°C to 35°C (59°F to 95°F): ±0.25°C (±0.45°F) [calibrated]
0°C to 15°C (32°F to 59°F): ±0.5°C (±0.9°F) [uncalibrated typical]
35°C to 50°C (95°F to 122°F): ±0.5°C (±0.9°F) [uncalibrated typical]
±0.025°C (±0.045°F) for ±1°C (±1.8°F)
changes within 15°C to 35°C (59°F to 95°F)
User selectable up to 0.001°C (0.01°C recorded)
0% to 100% RH
20% to 70% RH: ±1.5% RH (calibrated)
0% to 20% RH, 70% to 100% RH: ±3% RH (uncalibrated, typical)
20% to 70% RH: ±2% RH (calibrated)
0% to 20% RH, 70% to 100% RH: ±3% RH (uncalibrated, typical)
±1.0% for ±5% changes within 20% to 70% RH
User selectable up to 0.01% (0.1% recorded)
Two sensors, each measuring temperature and relative humidity; each is de-
tachable, cable-extendable, and interchangeable, with self-contained calibra-
tion; each may be assigned a unique 16-character identification
240 x 128 graphics monochrome LCD, displays temperature and humidity data
graphically, numerically, and statistically; 16 pre-defined, user-changeable
screen set-ups are included
400,000 typical individual time-stamped readings
Visual and audio alarms for temperature, temperature rate, RH, RH rate, and
fault conditions
0 V normal, 11 to 12 V active, sources up to 20mA, 2.5mm, two-conductor sub-
miniature plug
RS-232, Ethernet LAN, 802.15.4 (ZigBee) wireless (optional)
10 Base-T, 100 Base-TX, IP, TCP, DHCP, Ping, HTTP, HTML
30 m (100 ft) typical unobstructed
The DewK may be wall-mounted (hardware included) or set on a benchtop
12 V DC from external 100-240 V AC power supply
Standard 9V battery to allow continued measuring during power disruptions
0°C to 50°C
Specifications
9
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