Krohne UFC400 CG35011100 Ultrasonic Flow Signal Converter

UFC400 is a 4-wire ultrasonic flow signal converter manufactured by KROHNE, model code CG35011100 is a remote field housing variant (UFC400 F), matched exclusively with OPTISONIC 3000 / OPTISONIC 4000 inline ultrasonic liquid sensors, forming complete OPTISONIC 3400 / 4400 flow measurement systemsKROHNE Gro....Core application: liquid flow, heat metering, high-temperature/high-pressure industrial fluid measurement, compatible with conductive & non-conductive media.

2. Matching Sensor Combinations

1. UFC400 + OPTISONIC 3000 → OPTISONIC 3400 (standard liquid / district heating calorimeter)
2. UFC400 + OPTISONIC 4000 HT → OPTISONIC 4400 HT (high-temperature liquid)
3. UFC400 + OPTISONIC 4000 HP → OPTISONIC 4400 HP (high-pressure process fluid)

3. Core Technical Specifications

Power Supply

• 4-wire DC power supply, standard industrial DC 24V input
• Max error current output: 16.5mA; minimum cycle response time: 250ms
• Compliant with NAMUR NE21 EMC standards, requires shielded twisted pair signal cable

Measurement & Diagnostic

• Full NAMUR NE107 self-diagnostic system, backlight color status alarm on display
• Built-in OPTICHECK sensor health monitoring: empty pipe, signal loss, sensor fault, electronics failure, process abnormal logging
• Dual operation buttons + optical touch operation, local parameter configuration without tools
• Totalizer (volume/heat energy) storage, configurable flow unit & heat calculation formula

I/O & Communication (CG35011100 Standard Configuration)

• Analog output: up to 3 channels 4…20mA, HART 7 integrated
• Digital fieldbus options: Modbus RTU, PROFIBUS-PA/DP, Foundation Fieldbus
• Modbus parameters: half-duplex RS485, bus max 32 nodes, max transmission distance 1200m without repeater, address range 1~247

Mechanical & Protection

• CG35011100 = Remote split housing (UFC400 F), separate installation from sensor via long signal cable
• Enclosure protection: IP67 / IP68 submersible optional; NEMA 6P
• Material: aluminum alloy field housing, corrosion-resistant coating for outdoor & chemical plant

4. Model Code CG35011100 Definition Breakdown

CG series = UFC400 remote split version base code35 = Display + multi I/O module configuration01 = HART 7 + 3×4-20mA analog output11 = PROFIBUS DP communication interface00 = Standard 24VDC power, no special explosion-proof customization (Ex ia/ib optional variant codes available)

5. Industry Certifications

• NAMUR NE107, NE21 compliance
• SIL2 safety integrity certification for SIS safety loop deployment
• ATEX / IECEx explosion-proof optional for hazardous area Zone 0/1/2
• Custody transfer measurement approval for water supply, heating trade metering

6. Lifecycle & Supply Status

UFC400 is active mainstream KROHNE ultrasonic converter series, not obsolete; CG35011100 standard model maintains regular factory production, available for new orders & spare part replacement.

7. Typical Industrial Applications

• District heating / cooling heat quantity measurement
• Water plant raw water, sewage pipeline flow monitoring
• Petrochemical medium high-temperature/high-pressure liquid flow
• Food & beverage non-conductive liquid inline metering
• Energy custody transfer, process closed-loop flow control

8. Complementary Documentation

Official downloadable resources from KROHNE website:

1. UFC400 General Datasheet
2. Modbus RTU Operation Manual (Doc No.4002744801)
3. PROFIBUS PA/DP Supplementary Instruction
4. HART 7 Parameter Configuration Guide
5. NAMUR NE107 Diagnostic Fault Code Table