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Summary of Contents for Amprobe THWD-3
- Page 1 THWD-3 and TH-3 Relative Humidity and Temperature Meters User Manual For detailed specifications and ordering info go to www.TestEquipmentDepot.com...
- Page 2 THWD-3 and TH-3 Relative Humidity and Temperature Meters English...
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Page 3: Table Of Contents
Contents Relative Humidity Temperature Meters Introduction ................... 3 Safety Information ................ 3 Symbols Used in this Manual ............3 Operating Instructions ..............4 Power-Up ..................4 Selecting Temperature Units ............4 Data-Hold Operation ..............4 Relative Operation ................ 4 MIN/MAX Operation ..............4 Auto Power Off ................ -
Page 4: Safety Information
The THWD-3 and TH-3 are instruments to measure relative humidity and temperature. The extended probe allows the user to make measurements inside ducts or hard to reach areas. The Relative and MIN/MAX functions enable measurements to be made in two different areas and then compared. -
Page 5: Operating Instructions
Operating Instructions Power-Up • Press the � key to turn the Humidity/Temperature meter ON or OFF. Selecting Temperature Units When the meter is first powered on, the default scale setting is set to the Celsius (°C ) scale. To change to Fahrenheit (°F) press the � button. -
Page 6: Auto Power Off
Dew Point and Wet Bulb Temperature (THWD-3 only) Operation The Meter displays ambient temperature when first turned on. To DP WB DP WB display dew point (DP) temperature, press once. Press again DP WB to switch to wet bulb (WB) temperature. Pressing a third time returns the Meter to ambient temperature. -
Page 7: Psychrometric Chart
Psychrometric Chart .028 .024 .020 .016 .012 .008 .004 DRY BULB TEMPERATURE (F) -
Page 8: Repair
Limited Warranty and Limitation of Liability Your Amprobe product will be free from defects in material and workmanship for 1 year from the date of purchase. This warranty does not cover fuses, disposable batteries or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. - Page 9 Please read the warranty statement and check your battery before requesting repair. During the warranty period any defective test tool can be returned to your Amprobe® Test Tools distributor for an exchange for the same or like product. Non-Warranty Repairs and Replacement – US and Canada Non-warranty repairs in the United States and Canada should be sent to a Amprobe®...
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Page 10: Specifications
Battery: 9 V Battery, NEDA 1604 or JIS 006P or IEC6F22 Battery Life: 85-hours continuous; (with alkaline battery) Dimension: 240x54x34 mm (9.5x2.1x1.3 in) Weight: Approx.180g (6.4 oz.) Accessories: Battery, instruction manual TH-3, THWD-3 Humidity: 0% RH to 99% RH at 23°C 0˚C to 55˚C 32˚F to 131˚F... - Page 11 THWD-3 Wet Bulb Temperature: Range Accuracy 0°C to 55°C ± 0.8 °C 32°F to 131°F ± 1.6°F Dew Point Temperature: 0°C to 55°C ± 0.8 °C 32°F to 131°F ± 1.6°F Resolution: 0.1°C / 0.1°F Response Time (@ t90; in slowly moving air): 10 sec...
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