HBZhan Content Introduction:Conductivity meterIt is a multi range instrument that can meet various application detection requirements from deionized water to seawater. This instrument can provide automatic temperature compensation and set the temperature coefficient, making it suitable for measuring liquid samples with temperature coefficients different from water. It can provide three ranges and has an automatic range selection function, which can automatically select the most suitable range during detection.
　　
Forconductivity meterMany users have some understanding of the usage issues and electrode usage methods, and know how to use them specifically. However, some users may not be very familiar with the problems that arise during use. For example, how to operate this conductivity meter before and after turning on the power, how to detect any problems that may occur before use, or where the components have not started up. These similar related issues will be analyzed in detail below to give users a better understanding.
　　
Before turning on the power switch, observe whether the pointer points to zero. If it is not zero, adjust the screw on the meter head to make the pointer point to zero. Turn the calibration and measurement switches to the calibration position. Plug in the power cord, turn on the power switch, and preheat for a few minutes to adjust the calibrator to indicate the full meter. When using the first 8 ranges to measure liquids with conductivity below 300, choose low cycle and turn the plate towards low cycle. When using the last 4 ranges to measure liquids with conductivity in the range of 300 to, turn to the high range. Turn the range selection switch to the desired measurement range. If the conductivity of the measured solution is unknown in advance, it should be set to the highest conductivity measurement mode first, and then gradually lowered to prevent the needle from bending.
　　
Measurement reading: generally, the knob for measuring its constant is turned to the 1.0 gear, the top note positive ADI is turned to the zui maximum value, and then it is slowly adjusted, the measurement switch is turned to the calibration gear, the zero point is adjusted, the range is selected, the measurement switch is turned to the measurement position, and then the reading is made
　　
The use of electrodes: During use, clamp the electrode cap with an electrode clamp and fix the electrode on the electrode rod through the electrode clamp. When the conductivity of the tested solution is below 10, use DJS-1 type bright electrode. At this point, R should be adjusted to the position corresponding to the constant term of the matched electrode. For example, if the constant of the matching electrode is 0.95. Then R should be adjusted at 0.95. If the constant of the matching electrode is 1.1, R should be adjusted at the position of 1.1. When the conductivity of the tested solution is within the range of~, use DJS-1 platinum black electrode. R should be adjusted to the position corresponding to the constant of the matching electrode. When the conductivity of the tested solution is greater than that of the DJS-1 platinum black electrode, the DJS-10 platinum black electrode is used. At this point, R should be adjusted to the constant position of the corresponding electrode
　　
Insert the electrode plug into the socket, tighten the fastening screw on the socket, and immerse the electrode in the test solution. Continuing with calibration, when measuring with a range of 1-8, set the calibration to the low cycle. When measuring with a range of 9-12, turn the calibration to the high position, that is, turn it to calibration, and adjust it to make the indicator full. Attention: In order to improve measurement accuracy, calibration must be performed when the conductivity cell is connected to the electrode plug and inserted into the socket, and the electrode is immersed in the test solution when using the X and X levels. Afterwards, the direction measurement will be turned, and the actual conductivity of the measured liquid will be obtained by multiplying the indicator by the magnification of the range switch.
　　
When using 0~0.1 or 0~0.3 to measure high-purity water, first insert the electrode lead into the electrode jack, and before the electrode is immersed in the solution, adjust the meter to indicate a small value of zui. Then start measuring. To understand the changes in conductivity during the measurement process, simply connect the 10mV output to an automatic potentiometer. When the range switch is set to X 0.1 and set to low cycle. But when the conductivity pool socket is not connected to the electrode, the meter will indicate, which is a normal phenomenon because there is capacitance in the electrode socket and wiring. As long as the capacitor compensation is adjusted, this indicator can be set to zero. There is no need to do this, just wait for the electrode lead to be inserted into the socket and then adjust the indicator to the smallest value. When using odd numbered gears, look at a scale on the surface; When using even numbered gears, look at the scale below the surface.