The Series KF140 Thermal Gas Mass Flowmeter - Ningbo KIO Flow Instruments Co.,Ltd.

Stable zero point, high accuracy, and excellent repeatability

The Series KF140 Thermal Gas Mass Flowmeter is equipped with a MEMS sensor, leveraging their miniaturization and high sensitivity characteristics, to achieve millisecond-level rapid response to capture transient changes in gas flow accurately. It features excellent zero-point stability, maintaining high-precision measurements even under complex operating conditions with minimal repeatability error for reliable data. The device offers a wide turndown ratio and multiple selectable flow ranges to adapt to diverse application requirements. Supporting various signal output methods to meet different system integration needs, it also comes equipped with a standard thread for quick connection with pipelines and equipment, ensuring convenient and efficient installation.

Utilizes MEMS sensors with fast response time
Stable zero point, high accuracy, and excellent repeatability
Wide turndown ratio with selectable flow ranges
Selectable display orientation (0°, 90°, 180°, 270°)
Multiple signal output options available
Optional standard threads

Semiconductor industry
Chemical industry
Pharmaceutical industry
Food and beverage industry

Electronics industry
Environmental protection industry
Energy industry
Scientific research field

SPECIFICATIONS
Accuracy	±(1.5+0.2FS)%
Power supply	DC24V/1A
Response time	1-5s
Output	4-20mA or RS485
Zero drift	±20mV
Display	Instantaneous flow, cumulative flow
Temperature Rating	-10℃~55℃
Humidity Limit	Humidity: <95%RH, non-condensing
Storage temperature	-10~65℃
Communication	RS485 (Modbus RTU)
Working pressure	≤1.6MPa
Calibration medium	Air 20℃, 101.325kPa