As the core equipment for industrial flow monitoring，the DN-100B wall-mounted ultrasonic flow sensor directly affects measurement accuracy and service life through correct installation and regular maintenance。This article will introduce in detail the installation steps，routine maintenance points，and common fault troubleshooting methods for BF-LBB，BF-LBS and other series of wall-mounted ultrasonic flow sensors，helping information researchers fully master the usage techniques of this high-performance flow monitoring device。

1、Product Definition and Technical Advantages

The DN-100B wall-mounted ultrasonic flow sensor adopts the transit-time measurement principle，calculating flow velocity through the propagation time difference of high-frequency sound waves in the fluid，and is suitable for liquid flow monitoring in DN15-DN600 pipe diameters。Compared with traditional mechanical flowmeters，its design with no moving parts can avoid wear problems，measurement accuracy is up to ±0.5%，and it supports protocol compatibility with multiple models such as BF-LBY and HQTDS-100H。The patented signal processing algorithm developed by Xi'an Shenghongchuang Instrument Co., Ltd. based on the ISO 4064 standard enables the XY-TUF-2000S series to maintain stable readings even in fluids containing bubbles or impurities。

2、Installation Specifications and Operation Guide

Before installation，ensure that the pipeline is full and has a straight pipe section of 10 times the pipe diameter upstream and 5 times the pipe diameter downstream。For the DN-FV model，the sensors should be installed in pairs on both sides of the pipeline，with the spacing strictly calibrated according to the manual。Specific steps include：1) Use a dedicated positioning template to determine the installation position；2) Polish the pipe surface to Ra≤6.3μm；3) Apply coupling agent and then fix the sensor，with torque controlled at 0.8-1.2N·m。During commissioning，medium parameters need to be entered on the ZFD-100P control panel，and it is recommended to use a calibration rod to verify acoustic path alignment。

3、Maintenance Points and Fault Diagnosis

The condition of the sensor coupling agent should be checked monthly，and deposits on the probe surface should be cleaned quarterly。Common problems and solutions：1) Low signal strength→check whether the coupling agent has dried out or whether the pipe wall thickness is entered incorrectly；2) Large instantaneous flow fluctuation→check whether the ZFD-100H installation position is close to pumps or valves；3) No signal output→confirm whether the DN-100B power supply voltage is within the DC24V±10% range。Special reminder：the BF-LBS model requires an additional insulation layer in low-temperature environments to prevent icing from affecting acoustic wave transmission。

4、Industry Applications and Model Selection Recommendations

This series of products has been successfully applied in chemical industry（corrosive medium monitoring），heating（ZFD-100FX model for high-temperature hot water），water services（BF-LBB model for raw water metering）and other fields。When selecting a model，key considerations include：1) Medium temperature range（-30℃~160℃）；2) Pipeline material（differences in acoustic conductivity of carbon steel，stainless steel，etc.）；3) Protection rating（IP68 suitable for underground installation）。Comparative analysis shows that the stability of XY-TUF-2000S in media containing solid particles is more than 15% better than similar products。

5、Technical Certification and Service Guarantee

The DN-100B series has passed CE and RoHS certifications and meets the requirements of GB/T 18660-2018。Xi'an Shenghongchuang Instrument Co., Ltd. provides：1) 72-hour response mechanism；2) On-site calibration service（including third-party organization verification report）；3) Customized Modbus RTU protocol development。As a high-tech enterprise in Xixian New Area，we hold 20 flow measurement-related patents and can provide lifetime technical support for models such as HQTDS-100H。

Why Choose Shenghongchuang？

15 years of focus on industrial sensor R&D，with reliability verified by 2000+ customer cases。For complex operating condition requirements such as DN-FV，we provide：1) Free operating condition analysis；2) 48-hour sample testing；3) 3-year warranty commitment。Call 029-8456XXXX now to obtain the BF-LBS model technical white paper，or visit the official website to view the ZFD-100P real-time monitoring solution demonstration video。