REED R4500SD-PROBE Replacement Telescoping Hot Wire Probe




REED R4500SD-PROBE Replacement Telescoping Hot Wire Probe

Reed R4500SD-PROBE Datasheet (PDF)

For use with the REED R4500SD & SD-4214 Data Logging Hot Wire Thermo-Anemometers.

R4500SD-PROBE Offers


  • Telescoping Probe Diameter: 12mm Dia x 280mm ( min. length)

What’s included with the REED R4500SD-PROBE

  • REED R4500SD-PROBE Replacement Telescoping Hot Wire Probe

REED R4500SD Offers

The R4500SD measures air velocity, air temperature and has a built-in contact thermometer. Featuring automatic temperature compensation, Data hold, Max/Min functions, and an easy-to-read backlit LCD display. Using a SD card (max 16GB), a user can manually record up to 99 readings or automatically by selecting a desired sampling rate from 1 to 3600 seconds. Quickly generate an Excel file with raw data, all without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring.


  • Measures air velocity (fpm, m/s, kph, mph and knots) and air temperature
  • Contact temperature measurement with type J/K thermocouple option
  • Thermistor sensor for fast air temperature readings
  • Hot wire probe for precise low air velocity measurements
  • Real-time data logger with integrated SD memory card
  • User selectable sampling rate from 1 to 3600 seconds
  • Easy-to-read backlit LCD display
  • Data hold and Min/Max functions
  • Tripod mount for long-term monitoring
  • Low battery indicator and auto shut off


REED R4500SD Specifications

Type Hot Wire
Measuring Ranges fpm: 40 to 4921
m/s: 0.2 to 25
km/h: 0.7 to 90
mph: 0.5 to 55.9
knots: 0.4 to 48.6
Air Temperature 32 to 122°F (0 to 50°C)
Type K Temperature -148.0 to 2372.0°F (-100.0 to 1300°C)
Type J Temperature -148.0 to 2192.0°F (-100.0 to 1200°C)
Accuracy Air Velocity: ±(5% rdg + 20 fpm, 0.2 m/s, 0.3 km/h, 0.2 mph, 0.2 knot)
Air Temperature: ±0.8°C (1.5°F)
Contact Temperature: ≥-58°F (-50°C) ±(0.4% + 1°F (0.5°C))
≤-58°F (-50°C) ±(0.4% + 1.8°F (1°C))
Resolution fpm: 1
m/s, km/h, mph, knot: 0.1
Temperature 0.1°F/°C
Telescope Probe Length 11 to 37″ (280 to 940mm)
Response Time <1 second
Display 5-digit, Dual LCD Display
Backlit Display Yes
Data Hold Yes
Min Yes
Max Yes
Datalogging Capabilities Yes
Real-Time Clock and Date Stamp Yes
Selectable Sampling Rate Yes (1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds)
External Memory Yes, expandable up to 16GB with SD card (optional)
Auto Shut-off Yes (after 10 minutes/off)
Kick Stand Yes
Tripod Mountable Yes
Low Battery Indicator Yes
Power Supply 6 x AA Batteries or AC Adapter (optional)
Data Output Yes (RS-232)
Product Certifications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature 14 to 140°F (-10 to 60°C)
Operating Humidity Range 10 to 80%
Dimensions 8 x 3 x 1.5″ (203 x 76 x 38mm)
Weight 1.13lb (515g)


Ideal Applications for the REED R4500SD

  • HVAC/R and refrigeration servicing
  • Detecting filter blockage
  • Condensers and chillers

Additional information

Weight 1 lbs
Dimensions 10 × 7 × 8 in

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