single limb manometer

Locus Single Limb Manometer is a precision pressure measurement device designed for accurate and low-range pressure differentials in clean environments. Made from high-quality acrylic or borosilicate, it offers a transparent, readable, and rugged structure suitable for industrial, HVAC, laboratory, and educational use. Ideal for cleanrooms, air flow testing, and filter monitoring.

Model Number :- LOCUS-SLM-100
Measurement Range :- 0–200 mm H₂O / mm Hg / Pascal / Bar
Tube Material :- Acrylic / Borosilicate
Fluid Type :- Water / Mercury / Red Oil
Body Material :- Clear Acrylic (PMMA)
Scale :- Engraved / Screen-printed with Units
Mounting :- Wall / Panel Mounted
Brand :- LOCUS
Country of Origin :- India

Description

Product Description

1. Product Specification

Parameter	Specification
Tube Size	Ø10 mm to Ø20 mm ID
Scale Range	0–200 mm H₂O (Customizable)
Manometric Fluid	Water / Mercury / Red Oil
Operating Temperature	5°C to 50°C
Pressure Rating	Up to 500 mm H₂O
Accuracy	±1% F.S.
Fluid Visibility	Excellent (Clear transparent body)
Graduation Marking	Laser-etched / UV screen print

2. Working

Single Limb Manometers work on the principle of hydrostatic balance. When pressure is applied, the liquid in the single tube rises or falls based on the pressure differential. The height difference is proportional to the applied pressure.

3. Principle

Hydrostatic Principle:
Pressure = Height of liquid × Density × Gravitational Acceleration
P=h⋅ρ⋅gP = h \cdot \rho \cdot

4. Assembly

Supplied with:

- Transparent body with a calibrated scale
- End connectors (Brass / PVC)
- Sealing plugs and mounting clamps
- Manometric fluid (optional)

Assembly Instructions:

1. Mount body vertically on a stable surface.
2. Attach pressure inlet at the base.
3. Fill fluid to zero level.
4. Ensure no air bubbles.

5. Installation Process

Choose vertical wall/panel surface.
Fix manometer using clamps.
Connect pressure line to the inlet.
Ensure vertical alignment.
Fill fluid up to the zero mark.
Start monitoring pressure changes.

6. Technical Specifications

Technical Detail	Value
Material	Clear Acrylic / Borosilicate Glass
Connection Type	Push fit / Threaded
Calibration Fluid	Water, Mercury, or Special Oil
Operating Pressure	Upto 0.5 bar
Dimensions	As per requirement (Std. 150mm – 300mm)
Mounting Holes	Yes (pre-drilled)
Weight	150 – 300 grams

7.Troubleshooting (Transparent Tubular Level Gauge)

Problem	Cause	Solution
Fluid not visible	Scale misalignment / wrong fluid	Refill fluid, check mounting angle
Bubbles in the tube	Air leaks during filling	Refill properly & seal connections
Leakage from connectors	Loose fittings or cracks	Tighten or replace damaged parts
Inaccurate readings	Tilted installation / wrong fluid density	Re-align or recalibrate
Fluid level fluctuating	External vibrations	Use anti-vibration pads

8. HS Code

Product	HS Code
Single Limb Manometer	9026.20.00 (Instruments for measuring pressure of liquids or gases)

9. Frequently Asked Questions (FAQ)

Q1. Can it be used with corrosive gases?
A: Only if constructed with compatible fluid and seals—consult Locus before order.

Q2. Can I get custom measurement ranges?
A: Yes. Locus offers fully customizable scale ranges and units.

Q3. Is it safe for classroom demonstration?
A: Yes, we offer safe, non-mercury versions for educational use.

Q4. Can it be mounted horizontally?
A: No, vertical mounting is mandatory for accurate readings.

Q5. What fluids are available with the manometer?
A: Water, mercury (on request), or colored red oil.

10. Applications

HVAC Duct Pressure Monitoring

- Filter Pressure Drop Testing
- Clean Room Differential Pressure
- Laboratory Experimentation
- Fan Blower Testing
- Educational Demonstrations
- Calibration and Research Facilities