FTT20
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INDUMART Canada Turbine Flow Meter - liquid applications SERIES: FTT20 UP TO 0.2% ACCURACY HA R T 4...20 mA AND/OR PULSE OUTPUT HART COMMUNICATION (OPTION) MODBUS RS-485 INTERFACE (OPTION) ' INTRODUCTION Indumart FTT20 series of Liquid Turbine Flow Transmitters are accurate instruments for measuring flow rate and flow volume of low to medium viscosity liquids in a pipe and produce electrical signals (pulse or current or both) proportional to the flow rate. These flowmeters are offered in various sizes and flow ranges to suit both industrial, municipal and OEM applications. When liquid flows through the turbine housing of the FTT20 flowmeter, it results in spinning of an internal rotor. As the rotor spins, an electrical signal is generated in the coil. This signal is then converted into engineering units (liters, cubic meters, gallons etc.) on the local display. The instrument consists of two parts 1) flow sensor, 2) signal converter. The flow instrument can be supplied as the flow sensor only, without the converter/display, or it can be supplied complete with the converter. The converter with LCD indications for the flow rate and flow volume is used for configuration of the flowmeter parameters such as output scaling, total flow reset, damping, etc. The converter can be supplied to perform with either 24VDC or Lithium battery and also it can be ordered to work with both (dual power supply - battery and 24 VDC). The converter with solely the battery as power supply (model XB) can be used for indication only, while that with 24 VDC power supply can be used for both indication and output generation. For critical applications with possibility of 24 VDC power interruption, in order to keep registering the total flow and observe the flowrate, when the 24 VDC supply is interrupted, the converter with dual power supply can be ordered. The flowmeter is constructed from stainless steel that can be ordered with threaded, flanged, wafer or sanitary connections. The rotor is made of 420 stainless steel (13% Cr) which has excellent resistance against corrosion and very high hardness to preserve the exact shape of the rotor and ensure optimum accuracy. Optionally the rotor can be ordered as CD4MCu which is highly resistant to stresscorrosion cracking and against nitric, sulphuric and chlorinated liquids. When in usage, the inlet and outlet pipes must be fully filled with the liquids and the bubbles must be entrained from the liquid (also no cavitation). The flow entering into the flowmeter must be without pulsation, therefore a minimum straight pipe length of at least 10 times of the internal diameter of the pipe must be allowed for the inlet and at least 5 times of the internal diameter of the pipe must be allowed for the outlet of the flow meter. As standard, straight runs and filter are included in the length for flowmeters with ½" thread. For other flowmeters with threaded connection, the straight runs are optional feature that, if required, it must be included in the customer's order. The standard flow ranges are given in the table. If the extended flow ranges or a special flowrate are required, it must be specified in the order. Optionally, the FTT20 transmitters may also have RS485 digital interface and HART communication. SPECIFICATIONS Accuracy (of the rate) Measured Value Liquid Viscosity Signal Output Supply power Damping Time Total Flow Process Connection Electric Connection Liquid Temperature Sensor Housing Rotor Material Bearing & Shaft Converter Housing Communication Baud Rate Default Data Format Ambient Temperature Environ. Protection 1% (std.), 0.5%or 0.2% (option) Flow rate and total flow volume 1...10 CST, low viscosity liquids 4...20 mA, 1...3000 Hz pulse 24 VDC, Lithium Battery 1...10 seconds 6-digit display + 2 decimals Thread, flange, wafer, sanitary Gland for converter, DIN connection for sensor only units Non freezing -20...130 °C (std.) -20...+150 °C (option) 304 stainless steel (std.) 316 stainless steel (option) 420 stainless steel (13% Cr) CD4MCu (option) Tungsten Carbide Die-cast aluminum coated with polyurethane paint Modbus (RTU) RS485 (option) 1200...19600 Hz 9600, n, 8, 1 -10...+55 °C IP6

Nominal Size Thread Size Standard Flow Extended Flow (mm) (NPT or G) Range (m3/h) Range (m3/h) Thread Connection Maximum pressure for thread connection is 6.3 MPa (9000 psi). Nominal Size ‡ Rating for Standard Flow Extended Flow (mm) (inch) DIN (MPa) Range (m3) Range (m3) *ANSI flange Rating of 150#, 300# and 600# are available. ‡ Other pressure ratings for DIN flanges for up to 25 MPa (3600 psi) are also available. Wafer connections are also available for 15 to 100 mm sizes . Converter Model Power Supply ORDER CODES Model: FTT20 OUTPUT SIGNAL1) 4...20 mA + Pulse2) 4...20 mA Pulse Pulse1)...