FDM09-I Venturi Thermal Mass Flow Meter (Liquid / Air)
Feature: Bypass Venturi flow path design with high sensitivity, low pressure loss, and stable repeatability, supporting simultaneous flow and liquid temperature measurement
Sensor Type: Hot-wire sensor
Turndown Ratio: 50 : 1
Measuring Range: DN15: 42 L/min, DN25: 150 L/min, DN32: 250 L/min, DN40: 380 L/min, DN50: 600 L/min
Output: 4 ... 20 mA / 0 ... 10 V / Relay / RS-485
Accuracy: ±1% F.S.
IP Rating: IP65
FDM09-I Venturi Thermal Mass Flow Meter (Liquid / Air)
Feature: Bypass Venturi flow path design with high sensitivity, low pressure loss, and stable repeatability, supporting simultaneous flow and liquid temperature measurement
Sensor Type: Hot-wire sensor
Turndown Ratio: 50 : 1
Measuring Range: DN15: 42 L/min, DN25: 150 L/min, DN32: 250 L/min, DN40: 380 L/min, DN50: 600 L/min
Output: 4 ... 20 mA / 0 ... 10 V / Relay / RS-485
Accuracy: ±1% F.S.
IP Rating: IP65
High Sensitivity : Detects minor flow changes for early identification of blockage, leakage, or circulation issues.
Bypass Design : Directs part of the main flow through a thermal sensing path for sensitive measurement.
Low Pressure Loss : Venturi flow path drives bypass flow while supporting pressure recovery.
Stable Repeatability : Fixed flow path design maintains a consistent flow-split ratio.
No Conductivity Limitation : Suitable for water, DI water, and selected coolants with proper calibration.
Flow & Temperature Measurement : Supports cooling-capacity and energy calculations using flow and supply/return temperature difference.
Input | |
Sensor Type | Hot-wire sensor |
Turndown Ratio | 50 : 1 |
Measuring Range* | DN15 : 42 L/min |
| *The measurement range is defined at the standard condition (1013 mbar, 25°C). | |
Output | |
Output Signal | 4 ... 20 mA / 0 ... 10 V / Relay / RS-485 |
Signal Connection | M12 8pin 3-wire output |
Warm-up Time | 60 sec |
Response Time | t90≦6 sec |
Load Resistance | Current output : ≦500 Ω |
Communication | |
Communication Methods & Protocol | RS-485 Modbus RTU |
RS-485 Baud Rate | 9600, 19200, 38400, 57600, 115200 bps |
Accuracy ( at 25°C ) | |
Accuracy | ±1% F.S. |
Temp. Influence | 0.05% / °C |
Reproducibility | 0.5% F.S. |
Environmental | |
Medium | 0 ... 80°C, Non-corrosive liquid |
Operating Temp. & Humid. | 0 ... 60°C / 20 ... 90%RH (Non-condensing) |
Storage Temp. | -20 ... +60°C |
Operating Pressure | 16 bar |
Electrical | |
Power Supply | DC 24 V ±10% |
Current Consumption | 24 V : 110 mA |
Relay Capacity | Max current : 6 A |
Electrical Connection | M12 8P connector |
Installation | |
Pipe Connection | G thread |
Pipe Size | DN15 ( 1/2″ ) |
Display | |
Display Readout | 0 ... 99999999 (Cumulative flow : 8-digit) |
Decimal Point | Button |
Sampling Time | 1 cycle/sec |
Flow Unit | mL, L, m³, gal, ft³, inch³, UK gal |
Time Unit | /min, /hr |
Response Time Adjustment Range | 0.5 ... 300 sec |
Certification | |
Certification | CE |
Protection | |
IP Rating | IP65 |
Electrical Protection | ■ Reverse polarity ■ Over-voltage |
Material | |
Pipe | Aluminum alloy / Stainless steel / POM |
Housing | Aluminum alloy |
Weight | DN15 ( 1/2″ ) : 0.8 Kg |
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