S320 Flow Computer
For precise measurement and control
The Meriam Model S320 is a high quality industrial process flow computer designed for precise measurement and control applications. Extraordinary performance is attributable to a 32-bit floating point digital signal processor integrated into a well planned platform utilizing state-of-the-art hardware and software.
Programmed in a high level language, the S320 comes with an extensive library of standard application functions and examples. Units are configured to your specific requirements. If you choose to modify the unit, programs can be written on any PC (using included software development tools) and downloaded via a dedicated serial link. The operating system may be DOS, windows '95, or OS2.
In addition to the programming link, three serial interfaces are included for copntrol, data collection, and calibration and configuration. This allows communication with other computers and S320 units. The two standard RS485 ports can communicate with many devices using a single cable. This reduces wiring costs, improves signal quality, and eliminates analog signal cards where field devices have RS485 capability.
The standard software permits the use of calibration data to characterize the primary flow elements and transducers. This allows less expensive devices to be applied, while meeting your system performance objectives.
Applications
Flow Measurement: The S320 Flow Computer can be used with nearly all differential pressure producing type primary flow elements such as orifice, plates, nozzles, venturis, annular averaging pitot tubes, and laminar flow elements. Devices that are essentially (but not absolutely) linear like LFE, turbine, vortex, impeller positive displacement meters, etc. may be used with appropriate transducers. Regardless of sensor type, all flow devices will benefit from the S320's capability to characterize the flow element and transducers from test/calibration data. System and component offset and gain errors (sometimes over-looked in the data aquisition chain) are easily corrected. Non-linearity, frequently associated with the primary flow sensor, may be reduced by interpolation, splinr, or polynominal methods with the S320.
Compensation or correction for variation in process gas pressures, temperature and humidity will improve the accuracy of the flow calculations. The S320 equations consider the effects of measured operating condition changes on gas properties such as viscosity and density. Precise calculations are made using stored gas property data for 14 common gases. Actual, standardized volume, and mass flows are calculated using aideal or real gas laws. Calculations results are displayed and available for analog or digital transmission, data collection, or control.
Leak Detection: When combined with Meriam's laminar flow elements leaks as small as 1 SCCM are easily measured. The speed and precision at which the LFE/S320 system quantifies the leak rate makes it the best choice for high volume parts testing. It is superior to pressure decay, mass meters, or other flow testing techniques.
Control: The S320 is an elegant, scalable, and configurable control system. Capabilities include PI or PID algorithms, 8 digital inputs and 8 digital outputs, timer/counter functions, and as many as 5 analog voltage, current, frequency or pulse width modulation outputs from any of the measured or calculated perimeters. The S320 can stand alone or be easily integrated into your process cobntrol, PC, or PLC system providing localized signal processing, control, and digital multi-drop bus communication.
Meriam will provide primary flow elements, transducers, and S320 Flow Computers as components or complete systems with standard software and services specific to your application requirements.
Signal Processing Slot Cards
(as many as 5 series 100, 200, 300, or 500 cards may be used)
Type 100 (2) analog inputs; sigma delta A/D
Type 110 (2) analog inputs; integrating A/D
Type 200 (2) analog inputs; sigma delta A/D
Type 310 (1) analog in and out, flash-converter
Type 400 digital I/O expansion bus for modules below:
Module 410 (16) digital inputs; DIN Rail mount
Module 420 (16) digital outputs; DIN Rail mount
Module 430 (8) each digital in/out; DIN Rail mount
LEDIG diagnostic adapter for digital I/O with status LEDs
Type 510 (2) frequency and duty cycle inputs
Ordering Information
To order Meriam's S320 Flow Computer, custom-made to your specifications, please contact your Tequipment.NET sales representative with the following information:
- Number of Analog and Digital inputs required
- Application type: Laminar Flow Element, Accutube Averaging Pitot tube, orifice Plate, Flow nozzle, or Leak Detection.
- Number of Analog and Digital outputs required
- Power Supply: 2,3, or 4 Amp