Bright LED Display
Clear process-value visibility for industrial control panels in varying ambient conditions.
Other
Digital Process Indicator
FDI Series / FDI-96
High Accuracy Digital Process Indicator
The Digital Process Indicator is a microprocessor-based panel instrument designed for accurate measurement, indication and monitoring of industrial process parameters. It accepts standard analog transmitter signals and converts them into a clear digital process-value display for reliable plant monitoring and automation.
4–20 mA DC
Universal Input
±0.1% F.S.
Accuracy
LED 7-Segment
Digital Display
RS485 / Modbus
Communication
Product Overview
Accurate Process Monitoring in One Compact Indicator
The Digital Process Indicator is designed to provide clear, reliable and accurate indication of process values received from industrial transmitters and sensors.
The indicator accepts a standard 4–20 mA analog current input and converts the incoming signal into a programmable engineering value. This allows the same indicator platform to be configured for parameters such as pressure, level, flow and other compatible process measurements.
Its bright LED display provides excellent visibility in control panels and industrial environments, while programmable scaling and decimal-point configuration allow the displayed value to match the required engineering range.
With RS485 communication using Modbus RTU, the indicator can be integrated with compatible PLC, SCADA and industrial monitoring systems.
Verified catalogue data
Technical Specifications
All specification values are verified according to the FlowDo FDI Series product catalogue.
Product Name
Digital Process Indicator
Model / Series
FDI Series / FDI-96
Display Type
LED 7-Segment Digital Display (Red LED)
Display Digits
4 Digit (Standard) / 5 Digit (Optional)
Display Height
0.56 in (14.2 mm)
Input Signal
4–20 mA DC (Analog Current Input)
Input Impedance
250 Ω
Input Accuracy
±0.1% of Full Scale
Input Scaling
Programmable as per application
Decimal Point
Programmable
Communication Output
RS485 (Modbus RTU Protocol)
Baud Rate
9600 / 19200 / 38400 / 57600 bps
Standard Power Supply
230 VAC, 50/60 Hz
Optional Power Supply
24 VDC
Power Consumption
< 5 VA
Mounting
Panel Mount
Front Panel Size
96 × 96 mm (Standard) | 72 × 72 mm, 96 × 48 mm, 48 × 48 mm (Optional)
Panel Cutout
92 × 92 mm (+0.5 / -0)
Overall Depth
90 mm (Bezel ~10 mm + Body ~80 mm)
Enclosure Material
ABS (UL94 V-0) / Metal Body (Optional)
Front Panel Protection
IP54
Operating Temperature
0°C to 55°C
Storage Temperature
-20°C to 70°C
Relative Humidity
≤ 95% RH (Non-Condensing)
Approximate Weight
350 g
Product design
Key Features
Universal 4–20 mA Input
Compatible with standard industrial transmitters using analog current output (250 Ω impedance).
Programmable Scaling
Configure the displayed engineering range according to the connected transmitter and process.
High Accuracy & Stability
±0.1% of Full Scale input accuracy for reliable industrial process value indication.
RS485 & Modbus RTU
Standard industrial communication interface for seamless PLC and SCADA integration.
Multiple Power Options
Standard 230 VAC, 50/60 Hz supply with optional 24 VDC configuration available.
Industries and processes
Applications
Process Industries
General process-value indication in industrial plants for compatible transmitter outputs.
Water & Wastewater Treatment
Panel-based monitoring of compatible process transmitter values in treatment systems.
Chemical & Process Plants
Local display of compatible transmitter measurements in chemical and process plants.
Pump Monitoring Systems
Display of compatible pressure, flow or related process values associated with pumping systems.
Tank & Vessel Monitoring
Level or pressure indication using compatible transmitters on industrial tanks and vessels.
PLC / SCADA Automation
Integration into compatible automation architectures via RS485 Modbus RTU communication.
Ecosystem
Compatible FlowDo Instruments
The Digital Process Indicator connects with compatible FlowDo transmitters providing a standard 4–20 mA analog output.
Pencil Type Pressure Transmitter
Compact 4–20 mA pressure transmitter for gas, liquid and industrial process lines.
View details & specs →
Hydrostatic Level Transmitter
Submersible level transmitter for continuous liquid-level measurement in tanks and reservoirs.
View details & specs →
Biogas RH Transmitter
Industrial relative-humidity transmitter for biogas, wet gas and industrial gas lines.
View details & specs →Frequently Asked Questions
Digital Process Indicator FAQs
Common technical questions regarding universal digital process indication.
What is a universal digital process indicator?
A versatile panel-mounted digital meter that accepts universal process inputs (4–20 mA, 0–10 V, RTD, Thermocouples) and displays calibrated engineering units.
What parameters can it display?
Pressure, temperature, level, flow rate, humidity, pH, or any process variable converted to a standard electrical signal.
Can it trigger alarms and control pumps or valves?
Yes, with dual or quad programmable relay outputs for high/low alarm thresholds and interlock control.
Does it provide an analog retransmission output?
Optional isolated 4–20 mA retransmission for feeding secondary controllers or recorders.
What communication protocol is supported?
RS485 Modbus RTU for integration with SCADA, PLC, and IoT telemetry dashboards.
What power supply is required?
Universal 85–265 V AC (50/60 Hz) or optional 24 V DC power supply.
Technical selection
Need a Process Indicator for Your Application?
Share your process parameter, transmitter signal type, required display range, power supply and communication requirements with our team. We will help identify the appropriate FDI Series configuration.