A Single Limb Manometer is a precision pressure measuring instrument used for measuring low pressures, vacuum, and differential pressures in air, gas, and liquid systems. It consists of a large reservoir connected to a narrow transparent measuring tube. When pressure is applied, the liquid level in the measuring tube changes, and the pressure is determined by observing the displacement of the manometric fluid against a calibrated scale.
The large reservoir minimizes liquid level changes within the reservoir itself, allowing measurements to be taken directly from the graduated tube with enhanced accuracy and readability. This design makes the Single Limb Manometer more convenient and sensitive than conventional U-Tube Manometers for low-pressure applications.
Single Limb Manometers are widely used in laboratories, HVAC systems, clean rooms, ventilation systems, chemical plants, water treatment facilities, and industrial process monitoring applications where precise low-pressure measurement is required.
Applications of Single Limb Manometer
- HVAC Systems
- Clean Rooms and Controlled Environments
- Airflow and Ventilation Monitoring
- Laboratory Testing and Calibration
- Chemical Processing Plants
- Water and Wastewater Treatment Facilities
- Filter Pressure Drop Measurement
- Furnace and Burner Applications
- Industrial Process Monitoring
Features of Single Limb Manometer
- Accurate measurement of low pressure and differential pressure
- Easy-to-read direct indication
- High sensitivity for low-pressure applications
- Simple and reliable operation
- No moving parts or external power required
- Durable and maintenance-free design
- Clear graduated scale for precise readings
- Suitable for laboratory and industrial applications
Available Options
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Vertical Single Limb Manometer
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Inclined Single Limb Manometer
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Dual Scale Calibration
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Customized Measuring Ranges
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Acrylic Protective Cover
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Colored Gauge Fluids
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Stainless Steel Construction
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Calibration Certificate
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Customized Scale Markings
Specifications
| Parameter | Details |
|---|---|
| Product Name | Single Limb Manometer |
| Measuring Principle | Hydrostatic Pressure Measurement |
| Type | Reservoir and Single Tube Manometer |
| Measuring Range | 0–25 mmWC to 0–3000 mmWC (Customized Ranges Available) |
| Accuracy | ±1% of Full Scale |
| Scale Type | Direct Reading Graduated Scale |
| Tube Material | Borosilicate Glass / Acrylic |
| Reservoir Material | Acrylic, Glass, Metal |
| Body Material | Aluminum, ABS, Powder-Coated Steel, Stainless Steel |
| Manometric Fluid | Red Gauge Fluid, Mercury-Free Fluid, Water |
| Mounting Type | Wall Mounted / Panel Mounted |
| Process Media | Air, Gas, and Non-Corrosive Fluids |
| Operating Temperature | 0°C to 80°C |
| Connection Size | 6 mm, 8 mm, 10 mm Hose Connection |
| Scale Units | mmWC, mmHg, Pa, kPa, Inches WC |
| Power Requirement | Not Required |
| Compliance | Industrial and Laboratory Standards |
Benefits
Single Limb Manometers provide a simple, economical, and highly accurate method for measuring low pressures and differential pressures. Their reservoir-type design improves readability and sensitivity, making them ideal for applications requiring precise measurements. With no moving parts, no power requirement, and minimal maintenance needs, Single Limb Manometers offer long-term reliability and dependable performance in both industrial and laboratory environments.