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Handheld thermo-anemometer with telescopic hot-wire probe in carrying case

REED INSTRUMENTS

REED INSTRUMENTS R4500SD Hot Wire Thermo-Anemometer measurement tool

SKU CH-TC08-1E1Q9 MPN R4500SD

Measures air velocity from 40 to 4,921 fpm with a telescopic hot-wire probe, 1.5 °F temperature accuracy, built-in data logging, and a carrying case

  • TypeElectronic
  • Hot-wire probe captures airflow from 40 fpm up to 4,921 fpm
  • Logs data directly to SD card for later analysis
  • Telescopic probe extends to 11 in for duct access
  • Measures temperature with ±1.5 °F accuracy
  • Supports five wind-speed units including m/s and mph

Purpose and user

The REED INSTRUMENTS R4500SD is a hot wire thermo-anemometer designed for technicians who need to record air velocity and temperature data. It suits HVAC balancing, environmental monitoring and laboratory work where a telescopic probe and on-board logging are required.

Measurement limits

Velocity is captured from 40 fpm up to 4,921 fpm with a resolution of 1 fpm, while relative humidity is measured from 10 percent upwards. The probe diameter is 0.47 in and extends to a minimum length of 11 in. Operating temperature starts at 32 degrees F, and dew point measurement is not available on this model.

Deciding specification

The hot wire sensor delivers temperature accuracy within ±1.5 degrees, making this the critical figure for users who must meet tight thermal tolerances. If your application demands finer temperature resolution, this instrument will not meet the requirement.

Highlights

  • Hot-wire probe captures airflow from 40 fpm up to 4,921 fpm
  • Logs data directly to SD card for later analysis
  • Telescopic probe extends to 11 in for duct access
  • Measures temperature with ±1.5 °F accuracy
  • Supports five wind-speed units including m/s and mph

Specifications

BrandREED Instruments
ModelR4500SD
TypeElectronic

Questions about this item

Should I pick the R4500SD or a vane anemometer for low-speed duct readings?

The R4500SD hot-wire probe detects air velocity down to 40 fpm, making it suitable for low-flow HVAC work where vane types often stall.

What does the 4,921 fpm top speed mean when I am balancing a commercial supply register?

It covers high-velocity discharge readings up to 4,921 fpm, so you can verify design velocities on VAV boxes and laboratory hoods without switching instruments.

Does the telescopic probe reach ceiling diffusers, and what temperature range does it handle?

The probe extends to at least 11 in and operates from 32 °F upward with ±1.5 °F temperature accuracy, allowing traverse measurements at ceiling height in conditioned spaces.

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