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FW_F127PELTP_v1702_02_EN
1 INTRODUCTION
1.1
SYSTEM DESCRIPTION
Functions and features
The flow computer, model F127-P is a microprocessor driven instrument for the calculation of
differential flow measurement applications using flow equations for liquids. This product has been
designed with a focus on:
two multi-purpose pulse inputs;
ultra-low power consumption to allow long-life battery powered applications (type PB/PC),
Intrinsic safety for use in hazardous applications (type XI);
several mounting possibilities with aluminum or GRP enclosures for harsh industrial
surroundings;
ability to process all types of flowmeter signals;
transmitting possibilities with analog / pulse and communication outputs.
Flowmeter and temperature input
This manual describes the unit with a pulse input from the flowmeter. The F127-P has also a PT100
temperature input. Other versions are available to process (0)4-20mA signals. Two flowmeters with
a passive or active pulse, Namur or sine wave (coil) signal output can be connected to the F127-P.
To power the sensor, several options are available.
Standard output
Pulse output to transmit a pulse that represents a totalized quantity as programmed.
Linear (0)4-20mA or 0-10V analog output to represent the actual calculated differential flow rate
as programmed. The (0)4-20mA or 0-10V signal limits can be tuned.
Fig. 1: Typical application