Zero Adjustment Step of Coating Thickness Gauge

Many coating thickness gauges on the market must be calibrated before using, it’s very troublesome. But Linshang LS223 coating thickness gauge doesn’t need to be calibrated, only need zero adjustment. 

A zero-adjustment is required when using the coating thickness gauge for the first time, after inserting new batteries, working with different materials or ambient temperature changes. We strictly recommend carrying out the reference check on the uncoated original substrate, due to the difference of magnetic and conductive properties of the material, some measurement deviation will be caused. if this is not possible, please use the zero reference plates supplied with in the case, there are aluminum plate and iron plate, please choose correctly according to the measuring materials.

1. Measuring the plate or uncoated original substrate，a measured value will be displayed on the gauge, please make sure the probe tip is placed perpendicularly and evenly on the surface.

2. Hold the probe still, pressing the red button, a buzzer sound will be heard. The gauge will display “zero reference place probe”. 

   

3. Wait until the gauge display “Lift off probe at least 15 cm”. Lift the probe away from the plate(substrate) for at least 15cm. 

4. The zero adjustment is completed when there is the buzzer sound again, and the LCD screen displays 0.0.

5. After the zero adjustment is completed, place the standard film on the plate (substrate), if the measurement value is stable and deviation from standard value within ±1um, the gauge can be used normally. 

Note: When repeating measurement on the same spot, the reading may not always be 0um, since surface roughness, dirt, scratches etc. might cause variances. The operation of the gauge should be correct and proficient; otherwise, it will lead to instability of the measured values.

Linshang LS223 coating thickness gauge has two detachable probes F3N3 and F5N3, their measuring range is different. The maximum thickness reach 5mm.