FIT-S – Single Channel Flow Indicator Totaliser

Short description: A compact microcontroller-based single-channel flow indicator and totaliser with 4–20 mA input, 8-digit totaliser, batch counter, relay outputs, and optional RS485 Modbus RTU communication. Ideal for dosing, flow monitoring, and automation applications.

Key Features

• Rugged, state-of-the-art microcontroller-based system.
• Dual functionality: Flow rate indication / 8-digit flow totalising with batch counter mode.
• Accepts 4–20 mA DC input (linear or square root type).
• 5-digit instantaneous flow rate display and 8-digit totaliser display.
• User configurable flow rate range and field settable totalising rate.
• Relay outputs:
  • 2 relays for instantaneous flow alarms
  • 2 relays for batch counter operations
• Manual or optional remote reset for totaliser.
• Built-in 24VDC, 100 mA excitation supply for powering external transmitters.
• Optional 4–20 mA retransmission output for PLCs, indicators, or recorders.
• Optional RS485 communication with MODBUS RTU protocol.
• Battery-backed RAM for storing totaliser values and setpoints.
• Optional flameproof enclosure.

Technical Specifications

• Input: 4–20 mA DC, linear or square root (factory set)
• Display: 7-segment LED, 5-digit for flow rate, 8-digit for totaliser
• Resolution: 4½ digit for flow rate
• Accuracy: ±0.25% of FS ±1 LSD (Flow), ±2 counts (Totaliser)
• Totaliser: 8-digit; manual or optional remote reset
• Keyboard: 4-key tactile keypad
• Scaling: Flow rate and totaliser span/zero scalable by keypad
• Relay Outputs: 2 relays for flow rate setpoints; 2 relays for batching
• Communication (Optional): RS485 with MODBUS RTU protocol
• Retransmission (Optional): 4–20 mA retransmission output; max load 500 Ω
• Excitation Supply: 24VDC, 100 mA for external transmitter
• Remote Reset (Optional): via potential-free switch input
• Data Storage: Totaliser value and setpoints in battery-backed RAM
• Indications: LEDs for relays and serial communication
• Power Supply: 230 VAC or 110 VAC ±10%, 50 Hz (factory set)
• Connections: Screw-type connectors
• Mounting: Panel mounting; Bezel: 96 × 96 mm; Depth: 120 mm; Cut-out: 92 × 92 mm

Support Videos

Downloads

• 📄 Product Manual (PDF)

Need More Help?

Call us at +91-20-24479210 or email scan@vsnl.com

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