Description
The Smagall HS-MLI Portable Ultrasonic Liquid Level Indicator provides a fast, reliable and non-invasive solution for determining the liquid level inside gas cylinders and sealed containers. Designed for field engineers, fire protection contractors, industrial maintenance personnel and gas cylinder service companies, the HS-MLI eliminates the need to open, weigh or depressurize cylinders during routine inspections.
Unlike conventional methods that rely on weighing or estimation, the HS-MLI uses advanced ultrasonic sensing technology to distinguish between liquid and gaseous contents inside a cylinder. Simply place the probe against the external wall of the cylinder and slowly move it vertically. The instrument immediately indicates whether liquid is present, allowing the operator to identify the liquid level accurately and efficiently.
Because the instrument operates externally, there is no risk of contaminating the contents or exposing operators to hazardous gases. It also eliminates the mess associated with ultrasonic couplants, as the HS-MLI is specifically designed to operate without coupling gel.
The HS-MLI is suitable for containers manufactured from steel, stainless steel, glass and selected unformed plastics with wall thicknesses between 3 mm and 30 mm. It is capable of detecting pure liquids, milky liquids and suspension liquids, making it suitable for a wide range of industrial and fire protection applications.
This portable liquid level indicator is commonly used to inspect cylinders containing:
- Carbon Dioxide (CO₂)
- FM200®
- Novec™ 1230
- Halon
- FE13
- NAF S III
- CEA 410
- Other gases where the contents exist as liquid within compatible containers
Powered by two rechargeable 18650 lithium batteries, the HS-MLI offers approximately 10 hours of continuous operation, making it ideal for routine inspections, maintenance programmes and on-site servicing.
Whether you are inspecting a single cylinder or conducting preventive maintenance across an entire fire suppression system, the Smagall HS-MLI helps improve inspection efficiency while reducing downtime and guesswork.
Every unit supplied by AK Measurement includes a carrying case, rechargeable batteries (where permitted), user manual and a Calibration Certificate for added confidence.
Typical Applications
- Fire suppression system maintenance
- CO₂ cylinder inspections
- FM200 cylinder servicing
- Novec 1230 system maintenance
- Halon cylinder inspections
- Industrial gas cylinder verification
- Gas cylinder refilling operations
- Preventive maintenance programmes
- Fire protection contractors
- Industrial plant maintenance
- Chemical process industries
- Marine fire suppression systems
Why Buy From AK Measurement?
- Authorised supplier of professional measurement instruments
- Calibration Certificate included
- 90-day product warranty
- Technical product support before and after purchase
- Responsive customer service
- Competitive pricing for commercial and industrial users
- Fast quotation and enquiry response
- Trusted supplier serving customers throughout Singapore and the region
What’s Included
- 1 × Smagall HS-MLI Portable Ultrasonic Liquid Level Indicator
- 1 × Standard Probe
- 1 × Carrying Case
- 1 × User Manual
- 2 × 18650 Rechargeable Lithium Batteries with Charger
- 1 × Calibration Certificate
Product Specifications
| Brand | Smagall |
| Model | HS-MLI |
| Product Type | Portable Ultrasonic Liquid Level Indicator |
| HS Code | 9026100000 |
| Measurement Accuracy | ±5 mm |
| Applicable Wall Thickness | 3 mm – 30 mm |
| Compatible Container Materials | Steel, Stainless Steel, Glass, Unformed Plastics |
| Detectable Medium | Pure Liquid, Milky Liquid, Suspension Liquid |
| Measurement Method | Ultrasonic, Non-contact |
| Operating Temperature | -20°C to +60°C (-4°F to 140°F) |
| Operating Humidity | 15% – 85% RH |
| Power Supply | 2 × 18650 Rechargeable Lithium Batteries |
| Battery Operating Time | Approximately 10 hours |
| Probe Type | Standard Probe |
| Certifications | CE, ISO 9001 |
| Calibration Certificate | Included |
| Warranty | 90 Days |
Frequently Asked Questions
- Does the HS-MLI require ultrasonic couplant?
No. The HS-MLI is designed to operate without couplant, making inspections faster and cleaner. - Can it detect gas levels?
No. It detects the interface between the liquid and gas phases within compatible cylinders, allowing you to determine the liquid fill level. - Which cylinder materials are supported?
The HS-MLI works with steel, stainless steel, glass and selected unformed plastic containers with wall thicknesses from 3 mm to 30 mm. - Can it be used on LPG cylinders?
It can be used provided the container material, wall thickness and contents meet the instrument’s operating requirements (compatible material, 3–30 mm wall thickness, and contents in pure liquid, milky liquid or suspension liquid form). - Is a Calibration Certificate included?Yes. Every unit supplied by AK Measurement includes a Calibration Certificate.
Operation Guide Video
Watch the video below to learn how to operate the Smagall HS-MLI Portable Ultrasonic Liquid Level Indicator.
