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F-Series: F195

Field mount - Valve Position Indicator

VPI for hydraulic systems

The F195 has been developed for the valve position indication and monitoring in hydraulic systems. By using a bi-directional flowmeter to measure the volume displaced by the actuator, an accurate position of the system is calculated.
The display shows the position as a percentage as well as with the text "open" and "closed" for the minimum and maximum positions. As standard, the analog output mirrors the percentage displayed which can be used to transmit the valve position. The usual difficulties encountered in such applications include: very low flows, vibration, thermal expansion of the oil and high ambient temperatures. These are all well catered for in the design and operation of the F195.

Advantages
  • Robust IP66, IP67 (NEMA Type4X) field enclosure. It is so rugged, you can even stand on it!
  • Intrinsically Safe available - ATEX and IECEx approval for gas and dust applications.
  • Programming can be done by your own crew, with the sensible menu-driven structure, saving cost and irritation. Know one, know them all!
  • Very diverse mounting possibilities: walls, pipes, panels or directly onto outdoor sensors.
Application overview F195

Features

  • Valve position calculated through bi-directional flow measurement.
  • Displays the position as 0 - 100%, the moved volume and "open / closed" texts.
  • Analog output mirrors the position of the valve.
  • Modbus communication link for remote monitoring.
  • Re-calibration feature.
  • Service counter displays the number of full strokes.
  • Easy configuration with clear alphanumeric display.
  • Quadrature input to detect the direction of flow.
  • LED backlight.
  • Backup of settings in EEPROM memory.
  • Ambient temperature: -40°C to +80°C (-40°F to 176°F).
  • Various accessories are available for this product.
  • The F-Series is so rugged, even a truck can stand on it!

Flowmeter Inputs

  • Pulse type inputs:
    Reed-switch, open collector, NAMUR, NPN/PNP pulse, Sine wave (coil), active pulse signal.

Pulse Outputs

  • Function: Scaled pulse output according to the bi-directional accumulated total (e.g. a pulse every 3.25 gallons).
    Max. frequency: 500Hz.
    Adjustable pulse length from 0.001 sec. to 9.999 seconds. The directional switch output is switched as soon as the pulse output reflects a "negative" quantity.
  • Type: Two passive NPN transistors, active PNP transistors or isolated electro-mechanical relays.

Alarm Outputs

  • None.

Analog Outputs

  • Function: Re-transmitting the position of the hydraulic systems - the output can be scaled to any range (e.g. from 0% to 110%).
  • Type: One passive isolated, floating or loop powered 4 – 20mA output or one active (0)4 – 20mA or 0 – 10V DC output.

Applications

  • The F-Series is your first and best choice for field mount indicators in safe and hazardous area applications. Especially in harsh weather conditions like rain, snow, salty atmospheres and temperatures between -40°C up to +80°C (-40°F up to 176°F).
  • Valve position indication and monitoring in hydraulic systems. For example as valve position indicator VPI for ballast tanks in ships.

Power Supply

  • Long life Lithium battery.
  • 4 – 20mA Loop-powered.
  • 8 – 24V AC/DC.
  • 115 – 230V AC.
  • Basic: 8 - 30V DC.

Sensor Supply

  • 8.2, 12, 24V DC.

Intrinsically Safe

  • ATEX:
    II 1 G Ex ia IIB/IIC T4 Ga
    II 1 D Ex ia IIIC T100 °C Da
  • IECEx:
    Ex ia IIC/IIB T4 Ga
    Ex ia IIIC T100 °C Da

Explosion Proof

  • ATEX:
    II 2 G / Ex d IIB T5 Gb
    II 2 D / Ex t IIIB T100°C Db

Communication
Function: All process data and settings can be read and modified through the communication link.
Protocol: Modbus RTU.
Interface: RS232 / RS485 2-wire or 4-wire / TTL.

LCD example F195
Photo F195