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Summary of Contents for Tecfluid CP420L
- Page 1 Programmable flow rate transmitter instrumentation CP420L & CH420L for fluids Instructions Manual R-MI-CH420L Rev.: 0 English version...
- Page 2 The CH420L differs from CP420L in that it is also HART protocol compatible. 2. OPERATION To adapt the transmitter to the meter, the pulses per litre factor specified on the meter must be programmed.
- 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, 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, CH420L, 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 This input is designed for a potential free contact between terminals 1 & 2 of the connector. Terminal 1 is connected to the common of the instrument. This input has a 1 M pull-up resistor connected to terminal 2 and to the 3,3 V power supply. The input has a hysteresis with the switching points situated at about 1 V &...
- Page 8 53 mm WARRANTY TECFLUID guarantees all the products for a period of 24 months from their sale, against all faulty materials, manufacturing or performance. This warranty does not cover failures which might be imputed to misuse, use in an application different to that specified in the order, the result of service or modification carried out by personnel not authorized by Tecfluid, wrong handling or accident.
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