Vane Type Airflow Transmitter – Models AT400 and TAT420

Air velocity transmitters for airflow monitoring systems

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The AT400 and TAT420 air velocity transmitters supply accurate air velocity and (TAT420) temperature data from a building or process airflow on a continuous basis to a computer, chart recorder, printer and meter or control circuit.

The THT500 humidity-temperature transmitters supply accurate humidity and temperature data from a room or process air source on a continuous basis to a computer, chart recorder, printer, meter or control circuit.

Every instrument has terminals for both DC and AC power and 0-1 V, 0-5V and 4-20mA output.

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  • Specially designed for monitoring indoor air quality
  • Premier series cabling and probe connections
  • Simultaneous measurement of air velocity and temperature
  • The heavy, all metal probe can be used for airstreams that have a wide range of humidity, temperature and contaminants without compromising accuracy
  • HVAC Testing & Balancing
  • IAQ Investigations
  • Industrial Hygiene Ventilation Verification
  • Filter Face Air Velocity Measurement

Main Unit Specifications
Measurement Specifications
Air VelocityMetal rotating vaneAP275/APT275: 2.75″ diameter
AP100/APT100: 1″ diameter
Range1″ Probe: 300 to 6890 FPM (1.5 to 35 m/s)
2.75″ Probe: 50 to 7800 FPM (0.2 to 40 m/s)
Accuracy1″ Probe: ±0.5% of Full-scale + 0.75% of READING ±1 digit
2.75″ Probe: ±1.0% of READING ±1 digit
Resolution1 FPM or 0.01 m/s
TemperatureRangeAPT Probe: -4 to 176 F (-20 to 80C)
Accuracy±0.5°C
Resolution0.1°F or 0.1°C
General Specifications
Analog OutputCurrent output: DC 4~20mA
Voltage output: DC 0~1V or 0~5V
Operating TemperatureTransmitter: -4 to 176F (-20 to 80°C)
Probe: -22 to 212F (-30 to 100°C)
Power Supply120 or 220 VAC (50-60 Hz)
10 to 30 VDC
DimensionsTransmitter HousingW 4.8 x D 2.2 x H 4.8 inches (12.2 x 5.6 x 12.2 cm)
Warranty1 year1 x Rotating Vane Probe Head, Probe cable, Operation Manual, NIST Certificate
TAT4201 x Rotating Vane Probe Head, Probe cable, Operation Manual, NIST Certificate

User Manual

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Engineering Drawings

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