Model THWD-10W
Relative Humidity Meter with Wireless |
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Perform precision temperature and
humidity measurement for HVAC, Indoor Air Quality and environmental
applications. The large LCD display, full suite of measuring
features and two temperature probes (internal and external) make
this product a preferred choice for a professional. |
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Features
- Wireless (two way transmission).
- Highly stable humidity measurement ±2.5%.
- Processing relative humidity and
temperature measurements simultaneously.
- Two temperature sensors (internal and
external).
- Wet/Dry Bulb, Dew Point measurements.
- Easy selection between K / NTC / K-DP.
- Min/Max/Average/Relative/Hold
functions.
- Includes: Four (4) 1.5V
batteries, Type 'K' thermocouple and users manual.
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Electrical Specification |
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Temperature Scale |
Celsius or Fahrenheit user-selectable |
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Measurement Range |
Type 'K' thermocouple -50°C
to 1000°C, (-50°F to 1832°F) |
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Resolution |
0.1°C or 0.2°F |
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Accuracy |
Accuracy is specified for operating
temperatures over the range 18°C to 28°C (64°F
to 82°F), for 1-year, not including thermocouple error.
±(0.1% of rdg + 1°C) on -50°C to 1000°C ±(0.1% of rdg + 2°F) on
-50°F to 1832°F ±(0.05% of rdg + 1.4°F) -58°F to -328°F |
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Sensor (internal) |
Thermistor temperature sensor |
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Range |
0°C to 60°C, (32°F
to 140°F) |
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Resolution |
0.1°C or 0.2°F |
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Accuracy |
±2°C on 0°C to 10°C
/ ±0.5°C on 10°C to 45°C / ±2°C on 45°C to 60°C /
±4°F on 32°F to 50°F / ±1°F on 50°F to 113°F / ±4°F on 113°F to
140°F |
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Relative Humidity Specification |
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Sensor |
Capacitive Humidity Sensor |
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Range |
0% to 100% R.H. |
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Accuracy |
±2.5% at 25°C
(77°F), 10% to 90% R.H.
±5% at 25°C (77°F), 0% to 10% R.H., 90% to 100% R.H. |
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Sensor Response Time |
60 seconds typical (for 90% of Total
Range) |
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Sensor Hysteresis |
±1% R.H. typical
(excursion of 10% to 90% to 10% R.H.) |
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Temperature |
0.1 times the applicable accuracy |
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Coefficient |
specification per
°C from 0°C to 18°C and 18°C to 50°C;
(32°F to 64°F and 82°F to 122°F) |
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Input Protection |
Maximum input Voltage on any combination
of input connections (24 Volts DC or 24 Volts AC Rms) |
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Input Connector |
Accepts standard miniature thermocouple
connectors (flat blades spaced 7.9mm, center to center) |
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General Specification |
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Display |
5-digit Liquid Crystal Display (LCD) |
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Polarity |
Automatic, positive implied, negative
polarity indication |
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Operating Temperature |
0°C to 50°C |
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Storage Temperature |
-20°C to 60°C, <
70% R.H. with battery removed from meter |
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Operating Humidity |
< 80% R.H. |
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Accuracy |
Stated accuracy at
23°C ±5°C, < 75% R.H. |
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Power Supply |
4 x 1.5 Volt type 'AAA' (NEDA 24G or IEC
R03) batteries |
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Battery Life |
200 hours typical |
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Auto Power Off |
Yes |
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Low Battery Indication |
Yes |
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Dimension |
241.3mm (L) x 157.98mm (W) x 76.2mm (D) |
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Weight |
304gms including batteries |
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Wireless |
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Frequency Range |
910MHz to 920MHz
Low current consumption less than 1mA.
Transmitting distance can reach 25 meters without magnetic
interference. |
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Included Accessories |
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Includes Four (4) type 'AAA' 1.5V
batteries (installed), Type 'K' thermocouple and users
manual. |
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