In all the electronic truck scale load meter/work,  found weighting of tolerance, is mainly because the following four reasons: 21 spacing device failure spacing device including scale sets spacing device and load meter sensor spacing device. Spacing device clearance of general requirement in 3 limit mm to 5 mm range, including to load meter sensor spacing device the demand is higher, the gap in 3 mm requirements limit range. Less than 3 mm round in large scale, electronic platform balances, says has a serious outoftolerance; More than 3 mm round in large scale, says, easy to cause the weighing sensor damage. (1) load meter use environment: weighing transducer is actually a will convert measurable quality signal of the electrical signal output device. The first consideration sensors in the practical work of the sensor environment, it is very important for the correct choice of sensor, which is related to the sensor can work normally and its safety and service life, and even the entire load meter of reliability and security. Usually, high temperature environment on load meter sensor cause coating material melt, and solder joints civilized, elastomers internal stress structure change happened;  dust, moisture sensor to cause a short circuit influence; In corrosive environment can cause high sensor elastomer damaged or produce a short circuit phenomenon; Electromagnetic field on sensor output will produce interference. The relative environmental factors we must choose corresponding load meter can meet the necessary sensor weighing requirements.

Type B U shaped steel structure and the structure of the longitudinal do way, the structure longitudinal general use of the 6-8 root U longitudinal, A root U longeron have two straight edges, equivalent to type A structure of the two root keys, so type B structure bearing the longitudinal general in the six * 2 to 8 * 2 between. The average distance between them is not more than 30 cm, far less than double row wheel width, so any vehicles in the scales on stage, either horizontal, vertical driving, which is no will scale sets sag, and the mesa structure u-shaped slot and mesa to full welding technology, to make the u-shaped slot and form a cabinet mesa structure so anyway, mesa road vehicles are flat won't be out of shape. Electronic load meter fault phenomena: ditto. Check the analysis: beating load meter with analog sensor access, sensor shows normal. Check the wiring board dry, with 200 kg weight pressure sensors are standard in six feet, that five feet resistance measurement (see chart 3) sensor output resistance changes, found in the scales along check signal plate mouth place of a damaged, stringing wire outside leakage.

Load meter failure treatment: the sensor in the mouth from breakage and 6 feet (figure 3) exchange (for 5 feet after normal signal has a short). For instance you in the verification regulation of dividing value when for 20 kg, although load meter weighing on display that value is consistent, but several possible Angle for up to 18 kg maximum error. Also note, in order to meet in the future, must be clear about the convenience of electronic junctions each sensor terminals of sensors in the corresponding meet the part; As long as the poor, a horn when use must restart the weighing calibration. Load meter level adjustment: a single sensor mounting base installation with level adjustment plane level; DuoGe sensors installed base mounting plane to try to adjust to a horizontal plane (relative error in 3 to 5 mm), the purpose is to make the sensors bear load are basically the same. to the electronic balance system calibration is speaking, verification of the preliminary work. A installed on the machine, electronic scales measurement of the performance including: weighing accuracy, repeatability, slanting load, stability, the influence of when sensitivity, etc. Into the use of electronic truck scale verification items including the following aspects: 1) the technical inspection and appearance examination; 2) automatic zero check function; 3) zero area; 4) zero accuracy; 5) empty scale verification; 6) partial load verification; 7) weighing verification; 8) discrimination verification; 9) repeatability verification.