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Red handheld thermo-anemometer with hot wire probe and IR sensor

Sentry

Sentry ST-732 Hot Wire IR Thermo-Anemometer Air Velocity Air Flow Temperature Electrician Tool

SKU CH-Q8ZR-G7QT8

Measures air velocity up to 40.00 m/s and infrared temperature to 537.5 °C with simultaneous display, data hold and auto power-off after 10 minutes

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Measures air velocity up to 40.00 m/s with hot-wire precision
  • Infrared thermometer reads surface temperatures to 537.5 °C from a distance
  • Displays flow as CMM or CFM alongside velocity and temperature
  • Data hold plus min, max and average recall for analysis
  • Auto power off after 10 minutes idle to save battery

Hot-wire thermo-anemometer for HVAC

The Sentry ST-732 combines a hot-wire sensor with an infrared thermometer to measure air velocity, air flow and surface temperature in one handheld unit. It is built for electricians, HVAC technicians and facility engineers who need simultaneous readings of moving air and remote surface heat.

Thermal performance and power management

The infrared sensor measures remote surface temperatures up to 537.5 °C with an 8:1 distance-to-spot ratio. Auto power-off activates after 10 minutes on battery or 30 minutes when powered externally, conserving energy during extended sessions.

Measurement range and accuracy that define

Air velocity spans 0.00 to 40.00 m/s with a stated accuracy of ±(0.03 m/s + 3 % of reading). The infrared range stops at 537.5 °C, so users needing higher-temperature surface measurements must select a different instrument.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $290.99
Pricier than about 86% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameFesto
Model nameST-732
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

How do I install the Sentry ST-732 and what step is often missed?

Insert batteries, select the desired air velocity unit from m/s, km/h, ft/min, knots or mile/h, then aim the infrared sensor at the target surface using the 8:1 distance-to-spot ratio; the step many skip is allowing the hot wire probe to stabilise before recording.

What maintenance or replacement will the ST-732 need later?

The hot wire sensor and thermister are the wear items; plan to replace the probe assembly when readings drift beyond the stated ±(0.03 m/s + 3 % of reading) accuracy.

What limit appears first during sustained use of the ST-732?

Auto power-off activates after 10 minutes of idle time on battery power, or 30 minutes when an AC adapter is connected.

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