Basic Info.
Measuring Range
-20 to +70 °c
Transport Package
UPS/DHL/FedEx
Specification
135 x 60 x 28 mm
Production Capacity
50, 000 Pieces/Year
Product Description
Product Parameters
testo 425 CFM Hot-Wire Anemometer
Telescoping hot wire probeMeasures velocity, volume flow (CFM), and temperatureTimed and multi-point average flow calculationsAuto-off function saves battery lifeTelescoping handle extends to 33 inchesMin/Max/Average values make comparisons fast and easyCompact thermal sensor is ideal for in-duct readingsMeasures air velocity from 0 to 4000 FPMBright backlit display provides easy viewing in any environmentDescriptionTesto 425 - Hot-Wire Anemometer Telescoping handle extends to 33 inchesMeasures velocity, volume flow (CFM), and temperatureCompact thermal sensor is ideal for in-duct readingsMeasures air velocity from 0 to 4000 FPMThe testo 425 is a compact anemometer with a fixed thermal flow velocity probe. The probe head has a diameter of 7.5 mm. With the extendable telescope (length max. 820 mm), the measuring instrument is suitable for flow velocity measurement in ducts.
The testo 425 also measures extremely accurately in the low flow velocity range. The volume flow is directly shown in the display. For the purposes of volume flow calculation, the duct area can be easily entered into the testo 425. In addition to this, the instrument can be switched over to display the current temperature. Timed and point mean value calculation provide information on the average volume flow, flow velocity and temperature measurement value. The Hold function allows the current measurement value to be frozen in the display, min./max. values are also displayed at the press of a button.
Manufacturer Specs
| Temperature - NTC |
| Measuring range | -4° to 158 °F / -20 to +70 °C |
| Accuracy | ±0.9 °F (32° to 140 °F) / ±0.5 °C (0 to +60 °C) ±1.3 °F (Remaining Range) / ±0.7 °C (Remaining Range) |
| Resolution | 0.1 °F / 0.1 °C |
| Velocity - Thermal anemometer |
| Measuring range | 0 to +3937 fpm / 0 to +20 m/s |
| Accuracy | ±(5.91 fpm + 5 % of mv) / ±(0.03 m/s + 5 % of mv) |
| Resolution | 1.97 fpm / 0.01 m/s |
| General technical data |
| Dimensions | 7 x 3 x 2 in. / 182 x 64 x 40 mm |
| Operating temperature | -4° to 122 °F / -20 to +50 °C |
| Housing | ABS |
| Battery type | 9V block battery, 6F22 |
| Battery life | 20 h |
| Storage temperature | -40° to 158 °F / -40 to +70 °C |
| Weight | 10 oz. / 285 g |
Tech Specs
Environmental Testers / Physical Property/Anemometer / Air Flow Template
Type (anemometer)| Hot-Wire |
Measurement (anemometer)| Ft/Min, m/s |
Air Velocity Max| 4000 ft/min |
Air Velocity Min| 0 ft/min |
Accuracy Air Velocity| +/- 6 fpm + 5% of reading |
Humidity| No |
Temperature| Yes |
IR Sensor for Tempature| No |
Thermocouple Sensor for Temperature| Yes |
Dew Point| No |
Windchill| No |
Light Meter| No |
Water Proof| No |
Min/Max Display| Yes |
Data Hold| Yes |
Thermal Printer Option| No |
Interchangable Probe Options| No |
Replaceable Vane| Yes |
Metal Vane| No |
Test Equipment General Attributes
Unique Features| Air velocity,Volume flow (cfm), and temperature measurements Multi-point and timed mean calculations Max-Min values |
Warranty| 2 YEARS |
Warranty Details| 2 years from date of purchase |
Safety Approval| CE |
Product Weight| 8 OUNCES (0.5 LBS) |
Product Height| 1.8 IN |
Product Length| 11 IN |
Product Width| 4 IN |
Shipping Weight| 1 LBS |
Data Logging| No |
HTS/Schedule B Number| 90268020000 |
ECCN Number| EAR99 |
Calibration Included| Factory Calibration |
Battery Type| 9v |
Power Supply Voltage| Battery Powered |
Country of Origin| Germany |
Shipping Height| 3.8 IN |
Shipping Length| 13 IN |
Shipping Width| 6 IN |
Packaging & Shipping
As an important international instrument sales platform, our company has the authorization qualifications of many international first-line brands. Relying on the advanced digital information management platform and international procurement platform, we provide more than 100,000 instruments, industrial MRO products, industrial products and spare parts to global customers. Our business scope: industrial testing, non-destructive testing, gas testing, electrical testing, laboratory testing, water quality testing, environmental testing, medical testing...
So far, we have become an important partner of many global top 500 companies and well-known local Chinese companies. Create an efficient supply chain system to provide customers with strong supply guarantee.
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