Metal Tube Variable Area Flowmeter - MT28
Measuring Principle
iSOLV MT28 VA flowmeter measures volumetric flow rate of liquid and gases that operates on the float principle. It features a tapered metal tube, in which a float is allowed to move freely up and down. The float reaches a stable position when the upward force exerting by the flowing liquid equals the weight of the float. The float position is transmitted by a magnetic coupling system to the scale. The rotational movement of the follower magnet system transmitted to the indicator is linearised and the flow rate is indicated directly on the scale.
• Various wetted materials are available (Stainless steel, PTFE and Hastelloy C) for process
mediums.
• Die-cast aluminum housing with epoxy paint for indicator housing (IP65), also optionally
available in stainless steel.
• Vertical, horizontal & side mounted version for special installation positions.
• Modular rack housing accommodate all electrical functions and scale plate, modules of
electrical options can be replaced or retrofitted without interrupting the process.
| Special Options | |
| Limit Switches | • 2 limit switches • Adjustable on the scale (Can be retrofitted) |
| Electrical Current Output, CUR | Non-interacting and hysteresis-free conversion of the flow value into a scaled current output, 4-20 mA with HART |
| Flow Totaliser, FT | • Used in conjunction with CUR |
| High Temperature, HT | • Meter with built-in electrical components is mounted on extended spacers if process temperature should exceed the max. allowable level |
| Inlet Needle Valve, TE | • Connected at the inlet of flow meter • Used for on-off, throttling and regulating purpose |
| Outlet Needle Valve, TA | • Connected at the outlet of flow meter • Same purpose as TE |
| Inlet Differential Pressure, IR | Help to maintain a constant flow rate at variable inlet pressure |
| Outlet Differential Pressure, OR | Help to maintain a constant flow rate at variable outlet pressure |
• For liquid (both conductive and non-conductive) and gas measurement
• MT28 is particularly suitable for difficult applications and tough environmental conditions.
For example:
High temperature, high pressure as well as corossive environment. Can be used in all industrial sectors, for example:
• Chemical
• Waster / Wastewater
• Marine / Offshore
• Pulp and Paper
• Pharmaceutical
• Food and Beverage
• Oil and Gas
| Technical Details | |
| Measuring Range (100% Value) | |
| Water (20°C) | 25 to 100 000 l/h |
| Air (1.03 bar abs. 20°C) | 0.7 to 600 m3/h |
| Turndown Ratio | 10:1 |
| Accuracy Class | |
| VDI/VDE Code 3513, Part 2 | 1.6 |
| Flow Scale | Flow units |
| Ambient Temperature Ta | -40°C to +120°C |
| Max. Process Temperature Tp Without built-in electrical Option |
MT28/SS, MT28/HC: -80 °C to +300°C |
| Max. Process Temperature Tp With Built-in Electrical Option |
Refer to Sales |
| Test Pressure PT (Pressure Tested) |
The test pressure is calculated in accordance with pressure equipment directive (97/23/EC) and/or AD 2000-HP30, in compliance with the maximum allowable operating pressure and the maximum operating temperature |
| Meter Size | DN15 to DN100 and ½” to 4” |
| Connection | |
| Flange | DIN2501 DN15 – 100, PN16 - 250 ANSI B 16.5 ½” – 4”, 150 – 2500 lbs JIS B 2238 15 – 100, 10 – 20K |
| Thread | ISO 228 G½” – G1” ANSI B1.20.1 ½” - 1” NPT >50 bar |
| Sanitary | Tri-Clamp ISO 2852 Size 25 -139, 10 – 16 bar SMS 1146 1” – 4", 6 bar DIN 11851 DN15 – 100, 25 – 40 bar |
| Higher pressure rating and other types of connection available on request | |
| Material | |
| Flanges | SS316L (1.4404) (Standard) Hastelloy C |
| Wetted Parts | SS316L (1.4404) (Standard) Wetted Parts SS304 (1.4301) with PTFE liner Hastelloy C |
| Housing | Die cast aluminum with epoxy paint Optional: Stainless steel housing |
| Measuring Tube | Metal tube with tapered measuring section |
| Overall Height | |
| Standard for Flange & Sanitary Connection | 250 mm |
| Standard for Thread | 300 mm |
| Non-standard lengths can be customized to suit existing piping dimensions | |
| Protection Category | IP65, NEMA 12 & 13 |
| Note: Specifications are subject to change without notice | |
| Download Catalog | |
| MT28 |  |
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For all inquiries, you may contact us through Telephone, Email or Live Chat Support.
Operating Hours
Monday to Friday: 8.00am to 5.30pm
Technical Support (After Office Hour)
Tel: (65) 9876 6258
Contact Informations
| By Phone / Fax | By Email | By Live Chat | |
| Tel: (65) 6553 0366 Fax: (65) 6553 0828 |
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