Description
1. Overview
The Krohne UFC400 CG35011100 is an industrial high-precision ultrasonic flow signal converter developed by Krohne, Germany. Serving as the core secondary instrument for OPTISONIC 3000/4000 series ultrasonic flow sensors, it is specially designed for accurate process flow measurement and intelligent management in industrial fields. Integrated with high-precision signal acquisition, flow calculation, parameter compensation, fault self-diagnosis and multi-protocol communication, it realizes high-speed analysis, algorithm correction and standardized signal output for ultrasonic flow signals of liquid and gas media in pipelines.
As a standard industrial remote configuration model, CG35011100 adopts a mature 4-wire power supply architecture, supporting multi-channel analog output and mainstream industrial bus protocols with excellent working condition adaptability and system compatibility. Adopting Krohne proprietary ultrasonic flow analysis algorithm, it automatically compensates deviations caused by temperature, pressure, velocity distribution and pipeline interference, eliminating measurement drift and data fluctuation. Compliant with NAMUR NE107 self-diagnosis standards, it supports 7×24-hour continuous stable operation. It is widely applied in process flow monitoring, trade metering and closed-loop flow control for chemical, oil & gas, water treatment, power, heating and metallurgy industries, and supports renovation, replacement and intelligent expansion of legacy ultrasonic flow systems.
2. Technical Features
2.1 Professional Ultrasonic Flow Analysis with High Precision and Stability
Optimized for time-difference ultrasonic flow measurement, the algorithm accurately analyzes original ultrasonic signals from sensors and corrects measurement errors caused by pipeline turbulence, uneven velocity distribution and medium temperature changes. Built-in multi-stage digital filtering and signal shaping suppress data jitter induced by field electromagnetic interference and medium fluctuation effectively. It features zero drift and no precision attenuation during long-term operation, ensuring continuous accurate measurement and excellent repeatability.
2.2 Multi-Signal Output with Full Industrial System Compatibility
Equipped with multiple standardized industrial signal outputs, it provides 3 independent 4-20mA analog channels for synchronous output of flow rate, temperature, accumulated volume and other process parameters. It natively supports HART 7, Modbus, Profibus-PA/DP, FF fieldbus and other mainstream protocols, seamlessly connecting with DCS, PLC, SCADA and upper configuration platforms, adapting to both traditional analog acquisition and modern digital intelligent management scenarios.
2.3 Standard Remote Split Structure with Flexible Installation
The split converter structure allows separated installation from on-site sensors, avoiding circuit damage caused by high pipeline temperature, vibration, humidity and corrosion. The compact industrial housing supports cabinet embedded installation and wall mounting, applicable to central control cabinets, outdoor protective cabinets and explosion-proof areas with simple wiring and convenient maintenance.
2.4 NAMUR Full-Range Self-Diagnosis for Intelligent & Efficient Maintenance
Complying with NAMUR NE107 industrial diagnostic standards, it supports complete power-on self-test, signal abnormality monitoring, sensor fault diagnosis, communication link detection and working condition identification. It accurately identifies hidden risks such as signal loss, sensor failure, parameter over-limit, communication disconnection and power failure, with local status indication and remote fault code uploading to realize rapid fault location and reduce maintenance costs.
2.5 Industrial Anti-Interference Design for Long-Term Harsh Condition Operation
Adopting industrial components and isolated circuit design with strict EMC certification, it resists inverter harmonics, power surges, electrostatic discharge and radio frequency interference. The unit is dustproof, moisture-proof, shockproof and anti-aging, adapting to complex industrial sites with high humidity, heavy dust, strong electromagnetic interference and drastic temperature changes, supporting long-term maintenance-free operation.
2.6 Intelligent Parameter Compensation for Complex Process Media
Built-in multi-dimensional process compensation algorithm realizes dynamic compensation of medium temperature, pressure and flow velocity, adapting to homogeneous fluids such as clean water, sewage, oil and general industrial gas. It automatically optimizes operation parameters according to pipe diameter, pipeline resistance and process flow range, ensuring excellent linearity and stable precision across the full measurement range.
3. Detailed Specifications
3.1 Basic Hardware Parameters
- Model: UFC400 CG35011100
- Manufacturer: Krohne (Germany)
- Device Type: Industrial Ultrasonic Flow Signal Converter (Secondary Instrument)
- Compatible Sensors: Full series of OPTISONIC 3000 / OPTISONIC 4000 ultrasonic flow sensors
- Mounting Method: Remote wall mounting, cabinet embedded mounting
- Core Functions: Ultrasonic flow signal analysis, intelligent algorithm compensation, multi-parameter calculation, analog/digital signal output, fault self-diagnosis, industrial bus communication
- Applicable Systems: DCS distributed control system, PLC automatic control system, SCADA monitoring platform, industrial IoT metering system
- Operating Characteristics: High-precision calculation, full-range stability, multi-protocol compatibility, power-down data retention, 7×24h maintenance-free operation, high anti-interference
3.2 Measurement & Calculation Parameters
- Measurement Principle: Time-difference ultrasonic flow precise calculation
- Calculation Accuracy: High linear flow calculation with low full-range error and excellent repeatability
- Compensation Functions: Temperature compensation, pressure compensation, flow velocity adaptive compensation
- Process Parameters: Supports multi-parameter output of instantaneous flow, accumulated flow, medium temperature and working status
- Signal Processing: Multi-stage digital filtering, signal debounce and noise elimination to prevent data jitter
3.3 Output & Communication Parameters
- Analog Output: 3 independent 4～20mA standard industrial current outputs with configurable parameter assignment
- Digital Communication: Standard HART 7, Modbus; optional Profibus-PA/DP, FF fieldbus
- Communication Rate: Multi-baud-rate adaptive, stable bus communication with low latency and no packet loss
- Remote Functions: Remote parameter read/write, range modification, fault query, accumulated value reset, online diagnosis
- Data Storage: Automatic storage of operating data, fault logs and calibration records for traceable query
3.4 Electrical Power Parameters
- Power System: Industrial standard 4-wire power supply
- Supply Voltage: Industrial DC regulated power, compatible with standard cabinet power supply
- Power Characteristics: Wide voltage adaptation, surge resistance, ESD resistance, low power consumption
- Power Protection: Built-in filtering, voltage regulation and reverse polarity protection circuit to resist grid fluctuation and interference
3.5 Self-Diagnosis & Protection Parameters
- Diagnosis Standard: Compliant with NAMUR NE107 industrial intelligent diagnosis specification
- Self-Diagnosis Functions: Sensor signal abnormality detection, link fault detection, power abnormality, parameter over-limit and communication fault self-check
- Protection Mechanism: Signal abnormality locking, fault status retention, over-limit data shielding to avoid wrong data uploading
- Alarm Feedback: Local indicator alarm + remote fault code uploading for dual early warning
3.6 Environmental & Mechanical Parameters
- Operating Temperature: -20℃～+60℃ for continuous cabinet operation
- Storage & Transit Temperature: -30℃～+70℃ for transportation and long-term storage
- Operating Humidity: 5%～95% RH (non-condensing) with excellent moisture resistance
- Mechanical Properties: Shockproof, dustproof, anti-aging and corrosion-resistant for long-term fixed installation
- Protection Level: High-grade industrial sealed protection for conventional indoor and outdoor industrial conditions
4. Operating Principle
After power-on, the Krohne UFC400 CG35011100 flow converter completes hardware initialization, protocol loading, historical parameter reading and link self-check. It enters real-time flow calculation mode after confirming normal communication with the front-end ultrasonic sensor and valid hardware status.
The device continuously receives original ultrasonic time-difference signals from OPTISONIC sensors. Internal high-precision algorithms complete signal analysis, filtering, shaping and noise elimination. Combined with preset pipe diameter, medium and pipeline working parameters, it calculates real-time medium flow velocity, instantaneous flow and accumulated flow. Meanwhile, it collects medium temperature and working pressure data, and corrects process and environmental deviations through multi-dimensional dynamic compensation algorithms to eliminate measurement errors caused by temperature drift, uneven velocity distribution and pipeline interference, ensuring accurate and linear full-range measurement.
The standardized processed flow data is output in two forms: multi-channel 4-20mA analog signals for continuous PLC/DCS sampling, and digital data, operating status and fault information uploaded via HART/Modbus industrial bus to support remote monitoring, parameter modification and intelligent maintenance of upper systems.
The full-time NAMUR-standard self-diagnosis mechanism continuously monitors sensor links, signal quality, power supply, communication and hardware status. Once signal abnormality, parameter over-limit, communication disconnection or hardware fault occurs, the device automatically locks fault status, shields wrong data, triggers local alarm and remote fault reporting. It resumes normal operation automatically after fault elimination, ensuring continuous, stable and accurate operation of the entire flow measurement system.
5. Application Scenarios
5.1 Chemical Process Flow Control
Applied to liquid and gas flow monitoring in chemical reaction, distillation, transmission and heat exchange processes. It accurately collects instantaneous and accumulated flow data to cooperate with automatic systems for constant flow regulation, ratio control and over-limit interlock, ensuring stable chemical process and production safety.
5.2 Oil & Gas Flow Metering
Suitable for flow measurement of oil and gas transmission pipelines, booster stations and storage stations. With high stability and anti-interference capability, it meets process monitoring and trade metering accuracy requirements, supporting remote data uploading and intelligent centralized station management.
5.3 Water Treatment & Environmental Protection Engineering
Used for pipeline flow monitoring in municipal water supply, sewage treatment, circulating water and reclaimed water reuse projects. It accurately counts water transmission volume and instantaneous flow, providing reliable data support for water pump frequency conversion control, pipe network balance adjustment, water volume statistics and environmental data traceability.
