Flow converter for pulse sensors

UNICON-DF

Flow converter for pulse-sensor flow measurement, with -99999 ... 99999 digit measuring range, programmable units and totalizers, 4 ... 20 mA output, pulse output and two alarm outputs in an IP65 field case.

Introduction

Flow measurement in food technology, chemical and pharmaceutical production or water technology needs a converter that adapts to the sensor already installed. This device measures flow from pulse flow sensors, shows the value on a two-line LCD and converts it into a loop-powered 4 ... 20 mA output for evaluation or control.
 
Commissioning stays practical on site. The measuring range and unit are programmable, with flow displayed from -99999 ... 99999 digit and units such as l/min, m³/h or (US)gal/min. Coil, Namur, NPN, PNP and Hall sensor signals are supported, and model type 2 adds a second input for addition or subtraction.
 
For quantity-based processes, programmable totalizers and two electronic alarm outputs support monitoring and dosing. A pulse output is available for external summation, while the IP65 polyamide field case and -10 ... 55 °C operating range suit typical industrial installation areas.

Sensor flexibility
Sensor flexibility
Works with coil, Namur, NPN, PNP and external 0/5 ... 24 V DC pulses.
Clear process signal
Clear process signal
Converts flow to a loop-powered 4 ... 20 mA output with < 0.1 % accuracy.
Quantity control
Quantity control
Supports dosing tasks with two electronic alarm outputs and configurable totalizers.
Field-ready housing
Field-ready housing
IP65 polyamide field case supports installation at -10 ... 55 °C.
External totals
External totals
Pulse output enables external flow summation, with 100 ms pulse width and max. 5 Hz.

Features

Front-panel configuration

The keypad provides access to device configuration, including sensor type, measuring range, units, totalizer settings, alarms, pulse output and 4 ... 20 mA adjustment.

Display and status indication

The LCD dot matrix display shows flow values, totalizers and output states. It has 2 lines with 16 characters each and 4.9 mm character height.

Totalizer management

The device provides a daily totalizer that can be reset manually and an overall totalizer with zero-voltage protection. Totalizer access can be locked by numeric code.

Second input option

Model type 2 includes an additional measuring input. The inputs can be configured for addition or subtraction.

Simulation mode

A manual simulation mode generates a flow-rate value within the programmed measuring range for checking the process output.

Electrical connection

Screw terminals accept 2.5 mm² flexible conductors or 4 mm² wire. Sensor and output terminals are arranged inside the field case.