Flow-X/M Series : Inputs and Outputs

Each module contains a full set of inputs and outputs to accommodate a full meter stream, including analog inputs, digital inputs, prover inputs, serial interfaces, ethernet interfaces and more.

Always told by manufacturers that a true level A pulse integrity check for a dual pulse meter input was impossible? Let us proof to you that we have successfully implemented it - and it works!


The following inputs and outputs are available:

Meter and transmitter inputs

Each module is able to measure one meter/stream. Many inputs and outputs are available for versatile measurements.

  • Analog Inputs
    6x analog high accuracy inputs (with an uncertainty < 0.008% FS over the full operating temperature range of 0-60ºC) in a 4-20mA, 0-20mA, 1-5VDC, or 0-5VDC measurement mode. We support a highly accurate measurement mode for sharing analog mA inputs between different modules, for example in redundant applications.

  • HART inputs
    4 of the available 6 analog inputs can be configured with the digital HART interface for pure digital data exchange between transmitters and the flow module. Per HART interface up to four transmitters can be connected in multi-drop mode.

  • PRT Inputs
    2x high accuracy temperature inputs are available for four-wire PT-100 inputs. The uncertainty of each input is a superb +/- 0.02 ºC.

  • Dual pulse input
    1x dual pulse input is available for measurement of turbine meters, PD-meters, or any other type of dual, or single pulse input meter. The dual pulse input has level A pulse fidelity/integrity check in accordance with ISO6551, IP252, and API 5.5 standards. Alternatively, level B may be selected via software. Read [more].

Digital inputs and outputs

The sixteen (16) digital signals are highly versatile: each digital signal can be programmed to become a digital input, digital output, periodic time input, pulse output, or detector sphere contact. Per signal type, inputs/outputs can be defined by the user. 

  Level A-4 

 

The following digital signals are available:

 

  • Digital inputs/outputs
    Each input or output is freely programmable, for example to monitor a valve position, to control a valve, or for other control tasks. Up to sixteen (16) digital status inputs and outputs are available.

  • Detector inputs
    Up to 4 of the digital signals can be used as high-precision detector inputs for prover applications with double chronometry time measurement.

  • Periodic time input
    Up to two (2) high accuracy periodic time inputs are available for density analyzers or specific gravity transducers. Programmable from the configuration software. Supported devices are Solartron, Sarasota, and others.

  • Pulse outputs
    Pulse outputs are available for control of one or more mechanical counters etc.

  • Prover output 
    One prover bus output is available for support of the separate proving flow computer applications.

Various other signals

  • Analog Outputs
    In each flow module there are 4x analog 4-20mA outputs available, for example for a flow control valve. The analog outputs are freely programmable in the application.

Digital Interfaces

  • Serial interfaces
    In each module there are two user-configurable RS232/RS485 interfaces available for connection to external devices, such as an ultrasonic meter, serial printer, gas chromatograph, DCS etc.

  • Ethernet interfaces
    Two TCP/IP connections are available per flow module for Ethernet communi­cation to external systems such as dual redundant supervisory computers, web-browsers etc.

Field Connections

Field connections can be made using standard interface connections when many different options are applicable.

These industry standards, used by many major PLC and control equipment manufacturers, offer a great degree of freedom for the system integrator to define how to interface from our flow computers to field equipment in a cabinet. Please check the various housings for actual connectors.

         

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