7
2 Specifications and Environmental Conditions
Specifications and Environmental Conditions
Specifications
Temperature Range
0 °C to 50 °C
Temperature Accuracy
(“H” Model)
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]
Temperature Accuracy
(“S” Model)
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]
Delta Temperature
Accuracy
± 0.025 °C (± 0.045 °F) for ± 1 °C (± 1.8 °F)
changes within 15 °C to 35 °C (59 °F to 95 °F)
Temperature Display
Resolution
User selectable up to 0.001 °C (0.01 °C recorded)
RH Range
0 % to 100 %RH
RH Accuracy
(“H” Model)
20 % to 70 %RH: ± 1.5 %RH (calibrated)
0 % to 20 %RH, 70% to 100 %RH: ± 3 %RH (uncalibrated, typical)
RH Accuracy
(“S” Model)
20 % to 70 %RH: ± 2 %RH (calibrated)
0 % to 20 %RH, 70% to 100 %RH: ± 3 %RH (uncalibrated, typical)
Delta Humidity
Accuracy
± 1.0% for ± 5% changes within 20% to 70 %RH
RH Display Resolution
User selectable up to 0.01% (0.1% recorded)
Inputs
Two sensors, 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
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
Memory
400,000 typical individual time-stamped readings
Alarms
Visual and audio alarms for temperature, temperature rate, RH, RH rate,
and fault conditions
Alarm port output
0 V normal, 11 to 12 V active, sources up to 20mA, 2.5mm, two-conductor
subminiature plug
Communications
RS-232, Ethernet LAN, 802.15.4 (ZigBee) wireless (optional)
Ethernet
10 Base-T, 100 Base-TX, IP, TCP, DHCP, Ping, HTTP, HTML
Wireless Range
30 m (100 ft) typical unobstructed
Enclosure
The DewK may be wall-mounted (hardware included) or set on a benchtop
Power
12 V DC from external 100-240 V AC power supply
Battery Backup
Standard 9V battery to allow continued measuring during power disruptions
Operating Range
0 °C to 50 °C
Size (DewK)HxWxD
125 mm x 211 mm x 51 mm (4.9 in x 8.3 in x 2.0 in)
Size (Probes)
79 mm H x 19 mm dia. (3.1in x 0.75 in)
Weight
0.7 kg (1.5 lb.)
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