filtration

Manometer Installation & Calibration

Monitor booth airflow and filter condition with properly

Function

Measures differential pressure across filters or between booth interior and exterior to monitor airflow and filter loading

Location

Mounted on control panel or near filters, connected via tubing to sensing points

Typical Lifespan

10-20 years; requires periodic calibration verification

Call (877) 489-3727 Get Service Quote

Service Options

Repair Service

Replacement Service

Preventive Maintenance

Signs of Manometer/Pressure Gauge Failure

Gauge not responding to airflow changes

Needle stuck or sluggish

Inconsistent readings

Gauge reads zero with fans running

Visible damage to gauge face

Tubing disconnected or damaged

Readings don't match actual conditions

What Causes Manometer/Pressure Gauge Failure

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

Calibration Drift

common

Gauge has drifted out of calibration over time.

Blocked Tubing

common

Sensing tubing clogged with dust or debris.

Diaphragm Failure

occasional

Internal sensing diaphragm has failed or leaked.

Physical Damage

occasional

Gauge damaged by impact or vibration.

Improper Installation

occasional

Sensing points in wrong location or tubing reversed.

Repair vs. Replace Decision Guide

Repair When...

Tubing can be cleared or replaced
Connections can be tightened
Mounting can be improved

Replace When...

Gauge mechanism has failed
Cannot be recalibrated
Upgrading to digital gauge
Adding remote monitoring capability
Current gauge range not appropriate

Cost Comparison

Tubing repair $50-150. Calibration check $100-200. New Magnehelic gauge $100-300. Digital gauge with transmitter $300-800.

Lifespan Considerations

Quality gauges last 15-20 years. Verify calibration annually. Consider digital for easier reading and data logging.

Brands Using This Component

We service manometer/pressure gauge across all major paint booth brands.

Dwyer

MagnehelicMinihelicPhotohelic

Ashcroft

Pressure Gauges

Sensocon

Digital Pressure

Setra

Pressure Transducers

Our Manometer/Pressure Gauge Service Process

Inspection

Check gauge condition, mounting, and tubing connections.

Calibration Check

Verify gauge accuracy against known reference.

Tubing Service

Clear or replace sensing tubing as needed.

Installation/Replace

Install new gauge if required, proper location and range.

Documentation

Document calibration and proper reading ranges.

Manometer/Pressure Gauge Service FAQ

Common questions about manometer/pressure gauge repair and replacement

Normal readings depend on your specific booth design and filter type. Typically, exhaust filter differential pressure should be marked with a "change filter" threshold. Booth pressure relative to outside is typically slightly positive (0.03-0.05" w.c.). Check booth documentation for specific ranges.

NFPA 33 requires means to verify adequate ventilation. Manometers provide visual indication that airflow is sufficient and help determine when filters need changing. They are essential for compliance and quality control.

Magnehelic is a brand name (Dwyer) for a popular diaphragm-type differential pressure gauge. These are preferred for paint booths because they don't have fluid that can leak or freeze. Digital gauges offer easier reading and optional data logging.

Have a question not answered here?

Call us at (877) 489-3727

Related Components

Filter Replacement Exhaust Fan Supply Fan

Related Troubleshooting

Low Airflow Booth Pressure Issues

Need Manometer/Pressure Gauge Service?

WERCS technicians have the expertise and parts to get your manometer/pressure gauge working properly.

Call (877) 489-3727 Request Service Quote