TDS-EZ meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Includes a TDS chart sticker on the back of the meter that explains TDS values. Details Product Description: A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpens...
Product name:water Quality Tester PH METER;Description:PH pen, color chart, backlight;Battery:2*1.5V;Measuring range:1~14pH;Weight:110g;Precision:0.01pH;Shell Material:ABS;Size:30*15*155mm;Display:Back Light;Customized support:OEM;Customized support:ODM;
图4 555定时器结构图 Fig 4 Structure chart of 555 timer 555定时器功能表1如下:表1 555定时器功能表 Table 1 Function table of 555 timer (输入) UTH(输入) U(输入) U0(输出) TD(输出) 导通 0 X X 低 导通 1 2VCC/3 VCC/3 低 不变 1 2VCC/3 VCC/3 不变 截止 1 2VCC/3 VCC/3 高 ...
This chart is a guide only – Actual sizing of individual manufacturer’s products may vary.Types of Horse RugThere are many different types of horse rug on the market manufactured to suit a variety of purposes. You should be quite clear that you are buying a rug suitable for your purposes...
The chart to the right shows some common chlorine/chloramines reducing agents. You will note that metabisulfites and bisulfites are efficient reducers, however it should be noted that some studies have shown these to lower dissolved oxygen levels. I have never had a problem with this due to th...
NEW!: Consider adding a map with quality data from around the world. Please contribute accurate readings! NEW!: I'm considering adding a map or chart system where you can see the water quality around the world. Please rate the app and leave comments if you'd like to see that. NEW!: ...
tds__IJR-4000 FW100 (2013.3.06) (Eng) (Rev. 1)
temperature compensation chart, TDS conversion chart, and NIST-traceable calibration certificate with data. 主要特点 All Oakton® Traceable® conductivity standards are NIST-traceable reference materials Supplied with a calibration report from an ISO 17034 and ISO 17025 accredited laboratory These standard...
beer integrated electromagnetic flow meter micro 50mm water digital beer micro sewage pipe flowmeter $375.00 - $425.00 Min. order: 1 piece 2017 hot style digital pressure recorder digital chart recorder data logger channel paperless recorder $321.00 - $1,300.00 Min. order: 1 piece 4-20mA RS485...
AT89S51 as the water quality testing instrument is because of its simple structure, easy operation, low cost. Measurement of the TDS value to help people understand the situation of water quality has played a very important role. Un dersta nding of the detecti on of various parameters in the...