sensors

Airflow Sensor & Transmitter Service

Accurate airflow monitoring to maintain safe spray

Function

Measures air velocity in paint booth to verify adequate ventilation for safety and finish quality

Location

In booth supply or exhaust duct, often with display at operator station

Typical Lifespan

5-10 years with proper maintenance

Call (877) 489-3727 Get Service Quote

Service Options

Repair Service

Replacement Service

Preventive Maintenance

Signs of Airflow Sensor/Transmitter Failure

Readings do not match actual airflow

Sensor stuck at zero or maximum reading

Erratic or fluctuating readings

Display showing error or fault

Airflow alarm not triggering when it should

Reading does not change when fans adjust

Visible damage to sensing element

What Causes Airflow Sensor/Transmitter Failure

Understanding the root cause helps determine whether repair or replacement is the best option.

Sensor Contamination

common

Paint overspray, dust, or debris coating the sensing element and affecting accuracy.

Probe Damage

occasional

Physical damage to sensing probe from maintenance activities or debris.

Calibration Drift

occasional

Normal sensor drift over time requiring recalibration.

Transmitter Failure

occasional

Electronic transmitter or display unit has failed.

Installation Issues

rare

Sensor not located in proper position per manufacturer specs.

Repair vs. Replace Decision Guide

Repair When...

Cleaning restores accurate readings
Recalibration brings sensor to spec
Transmitter electronics can be repaired
Wiring issues can be corrected

Replace When...

Sensing element is damaged beyond repair
Sensor is obsolete or unsupported
Repeated failures after service
Upgrading to more accurate technology
Adding remote monitoring capability

Cost Comparison

Calibration and cleaning $150-300. Sensor replacement $400-1,500 depending on type and features.

Lifespan Considerations

Thermal anemometer sensors in clean environments last longer than those exposed to heavy overspray. Consider sensor location to extend life.

Brands Using This Component

We service airflow sensor/transmitter across all major paint booth brands.

Dwyer Instruments

?"SeriesMagnehelic

Honeywell

Air Velocity Sensors

TSI

VelociCalcAccuBalance

Siemens

QBM Series

Johnson Controls

Velocity Sensors

Kele

Air Velocity Transmitters

Our Airflow Sensor/Transmitter Service Process

Sensor Inspection

Inspect sensor probe and housing for contamination or physical damage.

Cleaning

Carefully clean sensing element using appropriate methods for sensor type.

Reference Measurement

Take reference airflow reading with calibrated portable instrument.

Calibration

Adjust sensor zero and span to match reference readings.

Alarm Verification

Verify low airflow alarm triggers at proper setpoint.

Airflow Sensor/Transmitter Service FAQ

Common questions about airflow sensor/transmitter repair and replacement

OSHA 1910.94 requires minimum 100 FPM average in the spray zone for conventional spray booths. Crossdraft booths typically operate at 100-150 FPM, while downdraft booths may be 50-75 FPM across the entire floor. Actual requirements depend on booth type and materials sprayed.

Airflow sensors should be calibrated at least annually, or more frequently in high-contamination environments. Many facilities check airflow monthly as part of routine maintenance. Calibration should also be performed after any changes to the ventilation system.

Common causes include sensor contamination, sensor positioned outside the main airstream, duct obstruction affecting the reading point, or actual airflow reduction due to filter loading or damper position. A technician can diagnose with portable reference instruments.

Have a question not answered here?

Call us at (877) 489-3727

Related Components

Gas Sensor Calibration Lel Detector Pressure Switch

Related Troubleshooting

Low Airflow Poor Finish Quality Air Balance Issues

Need Airflow Sensor/Transmitter Service?

WERCS technicians have the expertise and parts to get your airflow sensor/transmitter working properly.

Call (877) 489-3727 Request Service Quote