Tecfluid CP420L Instruction Manual Download Page 1 | Manualshive

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Programmable

flow rate transmitter

CP420L & CH420L

Instructions Manual

R-MI-CH420L Rev.: 0 English version

instrumentation

for fluids

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Summary of Contents for CP420L

Page 1: ...Programmable flow rate transmitter CP420L CH420L Instructions Manual R MI CH420L Rev 0 English version instrumentation for fluids ...

Page 2: ...will disappear when the programming sequence has been completed There are three push buttons with the following functions 2 1 Programming In all the programming screens the RESET push button exits the screen without saving the data in the memory even if changes in the digits have been made or not By pushing the two push buttons PROG at the same time the display will change to the programming mode ...

Page 3: ...ing In the first screen we program the flow rate equivalent to 4 mA lower range The measuring units will be the ones chosen in the previous screen The push buttons have the same function as the pulses per litre programming After that we program the flow rate equivalent to 20 mA upper range In a CH420L if during the programming sequence we receive a HART command that must be attended the local prog...

Page 4: ... in the instrument Example 1 Shortage of volume If we have a flow meter body which specifies i l 1 985 and when we check the volume of a batch we find that instead of having 100 litres as programmed we only have 95 litres 5 less and we must apply the following correction i l Original Pulses per litre Factor 1 985 V Expected Volume 100 Vr Real Volume 95 i l n i l V Vr i l n New Pulses per litre Fac...

Page 5: ... 4 20 mA analog Number of Device Variables 2 Number of Dynamic Variables 1 Mappable Dynamic Variables No Number of Common Practice Commands 13 Number of Device Specific Commands 2 Bits of Additional Device Status 12 Alternative operating modes No Burst mode No Write Protection Yes Analog loop electrical characteristics for communications Reception Impedance Rx 8 5 Mȍ Cx 200 pF 4 PUSH BUTTON INHIBI...

Page 6: ... 7 Size of the digit 8 mm Reset By means of push button 8 3 Flow rate Indication N of digits 5 Size of the digit 5 mm 8 4 General characteristics Ingress protection IP65 Ambient temperature range 0 60 ºC 8 5 Input terminals Terminal n COVOL Turbine 1 Common Ground 2 Live Live 3 Live 8 6 Inputs characteristics NOTE The input terminals are not isolated from the 4 20 mA loop Under no circumstances ca...

Page 7: ...frequency is 0 06 Hz 8 6 2 Turbine The turbine input is designed for connecting to the coil of a magnetic pick up The input impedance is 1 2 K This input is protected to limit the maximun applied voltage to the circuit This protection consists of two diodes in parallel and two 100 Ohm resistors The maximum voltage that can be applied to the input is 10 Vpp Voltages higher that this can cause damag...

Page 8: ...ch have not damaged due to misuse being excluded all responsibility due to any other damage or the effects of wear caused by the normal use of the devices Any consignment of devices for repair must observe a procedure which can be consulted in the website www tecfluid fr After Sales section All materials sent to our factory must be correctly packaged clean and completely exempt of any liquid greas...

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