FLPCB TTELEC | Alldatasheet
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© TT Electronics plc Issue B 7/2017 Page 1 TT Electronics | Roxspur Measurement & Control Ltd
2 Downgate Drive, Sheffield, S4 8BT, England |Ph: +44(0)114 244 2521
www.roxspur.com | sales@roxspur.com General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. 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 PLATON SHUNT ORIFICE FLOWMETER 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.
© TT Electronics plc Issue B 7/2017 Page 2 TT Electronics | Roxspur Measurement & Control Ltd www.roxspur.com | sales@roxspur.com General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. SPECIFICATION Orifice Plate: Indicator Housing: Accuracy: Impulse Pipe: Tube: Float: ‘O’ Seals Pressure Test: Pressure Drop: Stainless Steel mounted in a 25mm thick, polyester coated carrier ring Die-cast aluminum with white polyester coating and perspex window ±2.5% FSD Copper with plated brass fittings 100mm scaled borosilicate glass Stainless Steel Nitrile 250 psi At maximum flow rate 65% of the orifice loss of 354”WG is recovered FLOW RANGES Every effort has been made during the preparation of this document to ensure the accuracy of statements and specifications. However, we do not accept liability for damage, injury, loss or expense caused by errors or omissions made. We reserve the right to withdraw or amend products or documentation without notice. Head Office: 2 Downgate Drive, Sheffield, S4 8BT, England Tel: +44(0)114 244 2521 Fax: +44(0)114 243 4838 LPCB Reference Pipe Size (mm) Flow Range (dm³min) F1/1 80 300/1500 F 1/2 100 500/2500 F 1/3 125 700/3500 F 1/4 150 1000/5000 DIMENSIONS SPECIFICATION 1. The orifice plate must be installed between BS10 Table D or E flanges in the pipeline, with at least 5 diameters of straight pipe up and downstream. 2. The gauge glass must be in the vertical position. The isolating valves on the pressure tappings must be kept closed when the meter iiiiiiiiiis not being used. 3. A spare gauge glass must be available on site. ALTERNATIVE UNITS The Shunt Gapmeter Mark 2 is an improved version of this equipment and is approved by LPCB for use on line sizes from 50-200mm. iiiIndustrial versions of the Shunt Gapmeter are available for use between 25 and 500mm lines.