Platon LPC MK1 Shunt Orifice Flowmeter
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The Shunt Gapmeter Model SGUV Mark 1 is a direct reading flowmeter for use in automatic sprinkler installations, water spray or deluge systems. It is approved for regular monitoring and testing of such systems by the LPCB, Loss Prevention Certification Board, under their “Rules for Automatic Sprinkler Installations”, in the UK and by many equivalent organisations in other countries.
The flowmeter is a combination of two simple measuring elements. In the main flow line an orifice plate is inserted between two pipe flanges, producing a pressure drop related to flow rate. Across the orifice plate, a shunt or bypass loop uses this pressure drop to create a small flow through a similar orifice restrictor and a Variable Area flowmeter. The flow in the bypass VA meter is proportional to the main line flow, and special scaling on the glass tube allows the main line flow to be measured directly.
The Shunt Gapmeter Mk 1 is a robust, compact direct reading flowmeter, approved for use on lines from 80-150mm.
FEATURES
The flowmeter is a combination of two simple measuring elements. In the main flow line an orifice plate is inserted between two pipe flanges, producing a pressure drop related to flow rate. Across the orifice plate, a shunt or bypass loop uses this pressure drop to create a small flow through a similar orifice restrictor and a Variable Area flowmeter. The flow in the bypass VA meter is proportional to the main line flow, and special scaling on the glass tube allows the main line flow to be measured directly.
The Shunt Gapmeter Mk 1 is a robust, compact direct reading flowmeter, approved for use on lines from 80-150mm.
FEATURES
- Approved and Listed by LPCB
- Easy installation between pipe flanges
- Instantaneous reading
- Simple water flow measurement
- No electrical power needed
- Isolation valves for tube replacement and cleaning
Full Product Specification
| Orifice Plate | Stainless Steel mounted in a 25mm thick, polyester coated carrier ring |
| Indicator Housing | Die-cast aluminium with white polyester coating and perspex window |
| Accuracy | ±2.5% FSD |
| Impulse Pipe | Copper with plated brass fittings |
| Tube | 100mm scaled borosilicate glass |
| Float | Stainless Steel |
| ‘O’ seals | Nitrile |
| Flow Range | 30-1,500 m³/h (air @ ATP) 2-100 m³/h (water @ 20ºC) |
| Pressure Test | 250 psi |
| Pressure Drop | At maximum flow rate 65% of the orifice loss of 354”WG is recovered |
Recommended Products
Platon Averaging Pitot Tube: Flo-Bar
The Flo-Bar is an Averaging Pitot Tube flow sensor for use on pipes/ducts or chimneys. Differential pressure created across the Flo-Bar has the standard square root relationship to flow rate, making a simple, removable sensor for installation or retrofit on flowlines of any size.
The unique design of the Flo-Bar profile provides a high accuracy, wide rangeability sensor: the standard integral manifold allows simple process isolation and easy installation of a DP measurement cell.
Platon Gapmeter Type SGUV & SGUL
Direct reading orifice plate flowmeter for pipe sizes 1¼” - 18” (30mm - 450mm).
Platon Gapmeters type SGUV and type SGUL are direct reading Flowmeters for clean liquids and gases in pipe sizes larger than 1¼” (30mm) and provide a robust and cost effective method of flow measurement. The indicator housing can be mounted locally to the pipe or remotely by the use of flexible impulse tubing.
ADVANTAGES
FEATURES
Platon LPCB MK2 Approved Fire Sprinkler Flowmeter
The Shunt Gapmeter Model LPCB is approved for regular monitoring and testing of sprinkler systems by the LPCB, Loss Prevention Certification Board, under their ‘Rules for Automatic Sprinkler Installations’, in the UK, and by many equivalent organisations in other countries.
Model LPCB provides a compact, robust, direct reading flowmeter for 50mm-200mm pipelines and is suitable for use in horizontal or vertical pipes.
BENEFITS
UKAS and Traceable Calibration
Roxspur Measurement & Control Ltd is an ISO 9001:2008 company, we offer UKAS and traceable calibration under BS/EN ISO17025 accredited procedures. Our certificate generation systems are purposely geared to meet the strict and specific requirement of the Aerospace industry.
Calibration
Based at our factory in Sheffield our accredited laboratories are available to provide either on-site or in-house calibration to either UKAS or national standards. We cover Temperature (up to 2,200ºC), Pressure (up to 1,200 bar), Flow (up to 2,500 L/min) and Electrical parameters and provide certification using the latest technology.
Our team of experienced on-site engineers hold accreditation for the on-site calibration of equipment including autoclaves, furnaces, thermocouples and probes, scales and balances, ovens and chambers, indicators and controllers, pressure and electrical. We cover the full spectrum of industry sectors. All calibration standards used meet the requirements of Table 3 of AMS 2750D, whether in the laboratory or on site, ensuring full compliance with the specification. To find out more about our on-site services please click here.
We supply thermocouples calibrated and certified to meet the requirements of Table 1 of AMS 2750D appropriate to customer specified usage.
Aerospace Heat Treatment Specialists
From the supply of a single thermocouple to fully managed service contracts, by working in partnership with our customers we can assist in obtaining and maintaining NADCAP approval. To find out more about our specialist aerospace services please click here.
Certification
Certificates generated are designed to meet the requirements of AMS 2750D with the option of UKAS certificates for added peace of mind.
Platon Averaging Pitot Tube: Flo-Bar
The Flo-Bar is an Averaging Pitot Tube flow sensor for use on pipes/ducts or chimneys. Differential pressure created across the Flo-Bar has the standard square root relationship to flow rate, making a simple, removable sensor for installation or retrofit on flowlines of any size.The unique design of the Flo-Bar profile provides a high accuracy, wide rangeability sensor: the standard integral manifold allows simple process isolation and easy installation of a DP measurement cell.
- Flow sensor for liquids, gases or steam
- ± 1% Accuracy with standard square root flow output
- Full electron beam welded construction
- Unique profile sensor with flow averaging
- Integral 3 valve manifold
- Simple direct mounting of DP transmitter if required
- Plain head and remote manifolds available
- An in-line version for small pipes is also available.
Platon Gapmeter Type SGUV & SGUL
Direct reading orifice plate flowmeter for pipe sizes 1¼” - 18” (30mm - 450mm).Platon Gapmeters type SGUV and type SGUL are direct reading Flowmeters for clean liquids and gases in pipe sizes larger than 1¼” (30mm) and provide a robust and cost effective method of flow measurement. The indicator housing can be mounted locally to the pipe or remotely by the use of flexible impulse tubing.
ADVANTAGES
- Calibration for wide range of gases and liquids
- Available for various flanges
- Instantaneous reading
- Ease of installation
FEATURES
- Compact and rugged construction
- Optional flow alarm
- Maintenance possible under flow conditions
- Interchangeable components provide low cost unit
- Only one moving part
- Sized and manufactured to BS EN ISO 5167
Platon LPCB MK2 Approved Fire Sprinkler Flowmeter
The Shunt Gapmeter Model LPCB is approved for regular monitoring and testing of sprinkler systems by the LPCB, Loss Prevention Certification Board, under their ‘Rules for Automatic Sprinkler Installations’, in the UK, and by many equivalent organisations in other countries.Model LPCB provides a compact, robust, direct reading flowmeter for 50mm-200mm pipelines and is suitable for use in horizontal or vertical pipes.
BENEFITS
- Approved and Listed by LPCB for automated sprinkler systems
- 150-2,500 dm³/min range
- Easy and quick installation
- Flanged or Victaulic connections available
- Instantaneous reading
- Best in class flow ranges
- Isolation valves for tube replacement and cleaning
- Air bleed and drain valves
- Spare tube supplied
UKAS and Traceable Calibration
Roxspur Measurement & Control Ltd is an ISO 9001:2008 company, we offer UKAS and traceable calibration under BS/EN ISO17025 accredited procedures. Our certificate generation systems are purposely geared to meet the strict and specific requirement of the Aerospace industry.Calibration
Based at our factory in Sheffield our accredited laboratories are available to provide either on-site or in-house calibration to either UKAS or national standards. We cover Temperature (up to 2,200ºC), Pressure (up to 1,200 bar), Flow (up to 2,500 L/min) and Electrical parameters and provide certification using the latest technology.
Our team of experienced on-site engineers hold accreditation for the on-site calibration of equipment including autoclaves, furnaces, thermocouples and probes, scales and balances, ovens and chambers, indicators and controllers, pressure and electrical. We cover the full spectrum of industry sectors. All calibration standards used meet the requirements of Table 3 of AMS 2750D, whether in the laboratory or on site, ensuring full compliance with the specification. To find out more about our on-site services please click here.
We supply thermocouples calibrated and certified to meet the requirements of Table 1 of AMS 2750D appropriate to customer specified usage.
Aerospace Heat Treatment Specialists
From the supply of a single thermocouple to fully managed service contracts, by working in partnership with our customers we can assist in obtaining and maintaining NADCAP approval. To find out more about our specialist aerospace services please click here.
Certification
Certificates generated are designed to meet the requirements of AMS 2750D with the option of UKAS certificates for added peace of mind.


