AMPROBE THWD-3 Service Manual

THWD-3
Relative Humidity Temperature Meter
Data Sheet
No hassle warranty
No waiting.
No shipping charges.
Dual display
Extended probe stem to easily access air ducts
Dew Point
Wet Bulb
Min/Max readings
Data Hold
Capacitive sensor with protective cover
Auto Power off
Carrying Case
One year warranty
The THWD-3 uses a precision capacitance sensor to deliver accurate performance with long term stability. This high accuracy instrument measures the full range of relative humidity from 0% to 100% and features an exceptionally wide ambient temperature measurement range from
-20 °C (-4 °F) to 60 °C (140 °F). The sensor is mounted on a long shaft extending from the top surface of the unit, making probing into ductwork and hard to reach areas more easy. The large LCD displays two measurements simultaneously with a full range of display options including Hold, Min, Max, Dew Point (DP) and Wet Bulb (WB). The THWD-3 comes with soft carrying case, sensor cover, battery and manual.
Included Accessories
Carrying case, sensor cover, battery (installed), users manual
(note: $500 MSLP limit)
Amprobe® Test Tools
www.Amprobe.com
THWD-3 Relative Humidity Temperature Meter
Data Sheet
General Specifications
Display Dual display Operating Conditions: 0 °C to 40 °C Storage Conditions: -10 °C to 60 °C; <70 % RH Altitude Up to 2000 meters Sample rate 2.5 times per second Battery 9 V Battery, NEDA 1604 or JIS 006P or IEC6F22 Battery life 85-hours continuous (with alkaline battery) Dimension 240 x 54 x 34 mm (9.5 x 2.1 x 1.3 in.) Weight Approximately 180 g (6.4 oz.)
Technical Specifications
Function Range Accuracy
Measurement Ranges
Humidity 0 % RH to 100 % RH 5 % RH to 95 % RH: ±3 % RH @ 23 °C <5%RH, >95% RH ±5 % RH @ 23 °C
Temperature Coefficient: 0.1 x specified accuracy/ °C <23 °C, >23 °C Resolution 0.1 %RH Temperature (Dry Bulb) -20 °C to 60 °C: ±0.8 °C
-4 °F to -140 °F ±1.6 °F Dew Point (DP) -20 °C to 60 °C: ±0.8 °C
-4 °F to -140 °F ±1.6 °F Web Bulb (WB) -20 °C to 60 °C: ±0.8 °C
-4 °F to -140 °F ±1.6 °F Resolution 0.1 °C/0.1 °F
Response time (in slowly moving air)
Humidity 180 sec Temperature 10 sec
Amprobe® Test Tools
website: www.Amprobe.com email: info@amprobe.com Everett, WA 98203 Tel: 877-AMPROBE
Amprobe® Test Tools
Amprobe® Test Tools Europe
In den Engematten 14 79286 Glottertal, Germany Tel.: +49 (0) 7684 8009 - 0
©2007 Am probe Test Tools. A ll right s rese rved. 5/20 07 3052169 EN-NP Rev A
www.Amprobe.com
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