Product Details
KFS100 Air Velocity Transmitter

Introduction
The KFS100 air velocity transmitter is based on the thermal membrane principle, utilizing high-quality thermal membrane sensors manufactured with MEMS technology. It features high measurement accuracy, a wide measurement range, good stability, and strong environmental adaptability. It is an ideal choice for wind speed measurement in HVAC systems, pipeline air volume measurement, cleanroom ventilation, laminar flow monitoring, and other process and environmental control applications.
Feature
- Uses imported high-precision MEMS sensors, offering excellent long-term stability and anti-interference capability
- Power supply and output have overvoltage and reverse connection protection
- Optional isolated RS485 output
- Strong anti-pollution ability, easy to install and maintainCompact structure and shape
Parameter
Power Supply | 24VAC/DC±20% |
Range | 0-10m/s, 0-15m/s, 0-20m/s, 0-30m/s |
Accuracy | ±(0.2m/s+3%of mv)(20℃, 45%RH and 1013hPa) |
Resolution | 0.01m/s |
Output | RS485/Modbus, 0-10 VDC / 4-20 mA (3-wire system) |
Output Load | ≤500Ω (current output), ≥2KΩ (voltage output) |
Working Temperature | -10°C to +60°C |
Storage Temperature | -20°C to +80°C |
Probe Length | 210 mm (optional) |
Display | Optional LCD display, with unit display and backlight |
Protection Rating | Enclosure: IP65, Probe: IP20 |
Enclosure Material | Enclosure: PC, Probe: PA6 |
Electromagnetic Compatibility | EN61326-1 |
Certifications | ROHS certification, EU CE certification |
Note: The analog output version allows range selection via jumper.
Dimension (mm)


Order Information
KFS100 | air velocity transmitter |
| Code | Signal output |
VI | 0-10VDC/4-20mA |
RS | RS485/Modbus |
| Code | Installation |
1 | Duct type |
2 | Split-type |
| Code | Display |
D | With |
N | Without |
KFS100 | RS | 1 | D | |
Company Profile
Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of
measuring instruments , located in China xi’an City. Since 2008,
Xi'an Kacise focused on the development and production of pressure,
level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical
and management personnel, through efforts of our entire staff, we
have become a professional measuring instrument manufacturer and
solution provider. And we are continuously trying to improve
product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE,
intrinsic safety explosion-proof and isolated safety
explosion-proof certificates, etc. which ensure that our products
comply with international standards.

Kacise sensors have already been exported to America, Spain,
Australia, Chile and 20 other countries and regions, and received
many favorable feedbacks. Our overseas distributers are also
increasing. We regard “reasonable prices, efficient production time
and good after-sales service” as our tenet, and hope to cooperate
with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices,
and provides industry-leading customer service. We personally get
to know each of our customers, and we know how to discover the most
valuable part of our business , to help others achieve their goals.