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FLOW Product Data Sheet Platon Screwed Metal Tube VA Flowmeter PLATON GMTB & S SERIES Part of the Platon GMT Variable Area flowmeter family, models GMTB and GMTS are brass or Stainless Steel tube flowmeters with female screwed connections. With 1/2” 1” and 2” BSP/NPT threaded , fittings standard, the meters are ideal for arduous industrial service as an alternative to large glass tube flowmeters. They have particular advantages for gas or liquid flow measurement at high pressures and temperatures, where the fluids are opaque or dark coloured or to provide higher operational security for dangerous or toxic materials. Economic construction BSP/NPT screwed end fittings Brass or Stainless Steel Wide flow ranges Integral damping on gas flow lines Local indication Calibration for wide range of gases The VA meter principle used in the Platon GMT flowmeter measures the position of a float in a precision-machined tapered tube. The float rises with the flow up the taper until the upthrust from the flow balances with the weight of the float. A magnet, electron beam welded into the float casing, drives the external meter indication over a 100mm scale typically displaying a 10:1 flow range. Optional electronic outputs Options available on the GMTB/GMTS include (GMTA) flow alarm outputs for high or low adjustable set points and electronic 4-20mA flow transmitter (GMTX) outputs. All of these are available with CENELEC intrinsically safe approval. For low-pressure Natural gas flow measurement, models are available with minimal line pressure loss. Special versions are available for Oxygen service. All units are available calibrated for the specific line conditions or fluid involved.

SPECIFICATION Body Materials GMTB: Brass GMTS: 316 Stainless Steel 316 Stainless Steel Aluminium alloy LM25M polyester coated, weather-proofed to IP65 BSP or NPT female thread sizes 1/2” 1” 2” , , 100mm, 150 degrees. Air or water. Standard scales. Custom scales available to order Typically 10:1 ±2% FSD Less than 0.5% GMTB: 75 bar GMTS: 100 bar 200oC o -50oC (Based on Ambient of 20 C) To smooth out flow fluctuations and noise on gas flows, a dashpot damper is built in. This is suitable for clean gases where particulate matter is less than 50 microns. Std variants available for low pressure...