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Summary of Contents for Tecfluid CP420R
- Page 1 Programmable flow rate transmitter CP420R & CH420R Instructions Manual R-MI-CH420R Rev.: 0 English version...
- Page 2 1. INTRODUCTION The electronic transmitters CP420R and CH420R are DIN rail modules designed to work with Tecfluid’s volumetric counters (COVOL) and turbines. The instruments are supplied already configured for the type of input. The circuit is based on a microprocessor that, in function of the pulses per litre programmed, calculates the flow rate and totalizes the volume that flows through the meter and shows these values on a local indicator.
- Page 3 To change the flow rate units, the push button marked with the arrow pointing upwards, must be pushed. To change the totalized volume units, the push button marked with the arrow pointing left pointing upwards, must be pushed. The possible flow rate and totalized volume units are the following: Flow rate: There are 9 combinations made from 3 volume units and 3 time units.
- Page 4 2.3. Reset By pushing the RESET push button, the counter will be set to zero and it will continue to count. 3. MAINTENANCE It doesn’t require any special maintenance. 4. MEASUREMENT ERROR CORRECTIONS The calibration of the mechanical flow meters is made with water at 20 C to obtain a calibration for a liquid of density 1 kg/l and viscosity of 1 mPa·s.
- Page 5 The details of the characteristics with respect to the HART communication are available in the appropriate Field Device Specification Resume of the principal communications characteristics: Manufacturer, Model and Revision Tecfluid S.A., CH420R, Rev. 0 Device type Transmitter Hart Revision Device Description available...
- Page 6 7. MODELS COVOL input Turbine input Local mounting on the flow meter DIN rail mounting inside a switchboard Transmitter with analog output Transmitter with analog output and HART communication 8. TECHNICAL CHARACTERISTICS 8.1. Power supply 2 wires, by means of the loop current. The instrument has a protection diode to avoid damage if the power supply is connected with inverted polarity .
- Page 7 8.6.1.COVOL If the Pulse input is configured for Covol (jumpers in position 2-3), a potential free contact can be connected between terminals 1 & 2. Terminal 1 is connected to the common of the instrument. This input has a 1 MΩ pull-up resistor connected to terminal 2 and to the 3,3 V power supply.
- Page 8 Dimensions WARRANTY Tecfluid S.A. GUARANTEES ALL ITS PRODUCTS FOR A PERIOD OF 24 MONTHS, after consignment, against all defects in materials and workmanship. This warranty does not cover failures which can be imputed to misuse, use in an application different to that specified in the order, the result of service or modification by un-authorized persons, bad handling or accident.
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