TSI Alnor TH7415, TH7425 Data sheet
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TH-CALC
®
Thermohygrometers
Models 7415 and 7425
The Model 7415 Thermohygrometer is a basic instrument that
accurately and reliably measures temperature and humidity. It
is ideal for use in thermal comfort studies and HVAC system
performance testing. The Model 7425 Thermohygrometer is a
diagnostic instrument with advanced capabilities, such as data
logging, review of statistics and downloading to a PC using
LogDat2 software (included).
Applications
Conducting thermal comfort studies
Conducting IAQ evaluations
Verify building HVAC system performance
Troubleshooting heating and cooling systems
Monitoring air conditions for manufacturing processes
Model 7425
Indoor Air Quality Instruments
Features and Benefits
Reliably measures temperature and humidity
Calculates wet bulb temperature
Easy to read display shows parameters simultaneously
Added Features Model 7425
Directly calculates dew point
No psychometric chart needed
Calculates % outside air
Logs data with time and date stamp
Stores 12,700+ samples and 100 test IDs
LogDat2™downloading software included
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Specifications
TH-CALC Models 7415 and 7425
Temperature
Range 32 to 140°F (0 to 60°C)
Accuracy
1
±1.0°F (±0.6°C)
Resolution 0.1°F (0.1°C)
Humidity
Range 5 to 95% RH
Accuracy
2
±3% RH
Resolution 0.1% RH
Instrument Temperature Range
Operating (Electronics)
40 to 113°F (5 to 45°C)
Operating (Probe) 14 to 140°F (-10 to 60°C)
Storage -4 to 140°F (-20 to 60°C)
Data Storage Capabilities (7425 only)
Range 12,700+ samples and 100 test IDs
Logging Interval (7425 only)
1 second to 1 hour
Time Constant (7425 only)
User selectable
External Meter Dimensions
3.3 in. x 7.0 in. x 1.8 in. (8.4 cm x 17.8 cm x 4.4 cm)
Meter Probe Dimensions
Length
7.0 in. (17.8 cm)
Diameter of Tip 0.75 in. (19.0 mm)
Meter Weight with Batteries
0.6 lbs (0.27 kg)
Power Requirements
Model 7415 Four AA-size batteries
Model 7425 Four AA-size batteries or optional AC adapter
Indoor Air Quality Instruments
TSI Incorporated
- 500 Cardigan Road, Shoreview, MN 55126-3996 USA
USA Tel: +1 800 874 2811 E-mail: info@tsi.com Website: www.tsi.com
UK Tel: +44 149 4 459200 E-mail: tsiuk@tsi.com Website: www.tsiinc.co.uk
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Germany Tel: +49 241 523030 E-mail: tsigmbh@tsi.com Website: www.tsiinc.de
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India Tel: +91 80 41132470 E-mail: tsi-india@tsi.com
China Tel: +86 10 8260 1595 E-mail: tsibeijing@tsi.com
Contact your local TSI Distributor or visit our website
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for more detailed specifications.
P/N 2980576 Rev A Copyright © 2007 by TSI Incorporated Printed in U.S.A.
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7415 7425
Temperature
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%RH, wet bulb
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Dew point
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% outside air
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Data logging/downloading
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Review data
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Statistics
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Field calibration adjustment
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Certificate of Calibration
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1
Accuracy with instrument case at 77°F (25°C), add uncertainty of 0.05°F/°F (0.03°C/°C) for change in
instrument temperature.
2
Accuracy with probe at 77°F (25°C). Add uncertainty of 0.1% RH/°F (0.2% RH/°C) for change in probe
temperature. Includes 1% hysteresis.
Specifications are subject to change without notice.
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