31
2023
-
08
How to judge the quality of the weighing sensor?
Weighing sensor good or bad judgment
Weighing equipment after a long time of use may appear weighing inaccurate phenomenon, generally we have to through the calibration of the weighing control instrument to solve such problems. But sometimes no matter how calibration can not make the scale body return to normal, then we have to check in detail from all aspects of the weighing mechanism, and the core component of the weighing mechanism is the weighing sensor.
At present, the weighing equipment generally uses resistance strain gauge weighing sensor (analog) as the core component of the weighing mechanism. It uses Wheatstone bridge principle to convert the weight signal into a linear electrical signal. Conventionally, there are four lines, the input is 5-10V excitation voltage (power supply voltage), and the output is the weight signal in "mV.
One: observation method
Observe the appearance of the sensor for deformation, cracks, etc. If these conditions occur, you need to contact the manufacturer to replace the sensor.
Two: line input and output measurement method
Find the sensor connection end in the weighing controller (weighing instrument) and measure the sensor connection circuit
Under normal circumstances, the excitation voltage (between EXC and EXC-) is 5-10V, and the output voltage (between SIG and SIG-) is close to 0 when the equipment is unloaded, which is less than the maximum output of the sensor. (The maximum output of the sensor = excitation voltage * sensor sensitivity, the sensitivity of the checkweigher sensor is mostly 2mV/V), beyond this range, contact the service provider to apply for replacement of the sensor.
Three: sensor resistance measurement method:
Measure sensor resistance, through the resistance to determine whether the sensor is good or bad
1: input resistance ≧ output resistance> bridge resistance
2: In general, the bridge resistance is equal or two equal.
Note: The input resistance is the resistance between EXC and EXC-, the output resistance is the resistance between SIG and SIG-, and the bridge resistance is the resistance between EXC and SIG ,EXC-and SIG-and EXC-and SIG-)
The above is the weighing equipment weighing sensor is good or bad judgment method, it should be noted that the weighing sensor in normal use is not so easy to damage, many failures are due to improper use of the weighing sensor overload caused. Therefore, during the use and disassembly of weighing equipment, we should try our best to avoid the impact and bump of heavy objects, and operate in strict accordance with the weighing range of the equipment.
You can contact us by phone or email.
You can contact us by phone or email.
Contact Information
Customer service
Company Address:
14-3F, College Student Entrepreneurship Park, No. 1188 Zhongguan Road, Zhenhai District, Ningbo City, Zhejiang Province
Factory Address:
No. 5, Qingyang Electronic Information Industry Park, Chizhou, Anhui
Mailbox:wangyz@hankunnb.com
Telephone/Fax:0574-83013381
Contact
Manager Ye
Telephone:13486391162
Region: Central China, East China (Shandong, Jiangsu, Henan, Anhui, Hubei, Hunan, Shanghai, Zhejiang)
Manager Zhang
Telephone:13652102766
Region: Northeast, North China (Inner Mongolia, Heilongjiang, Jilin, Liaoning, Beijing, Tianjin, Hebei, Shanxi)
Manager Wang
Telephone:13819806607
Area: Northwest, Southwest (Xinjiang, Gansu, Ningxia, Shaanxi, Sichuan, Chongqing, Yunnan, Guizhou)
Manager Ye
Telephone:18968583658
Region: South China (Fujian, Guangdong, Guangxi, Jiangxi, Hainan, Taiwan)
