When it comes to handheld multimeters, Fluke is the default industry standard. Even though the product is expensive, with its industry-proven reliability, Fluke multimeters are not less popular. For example, the industrial-grade multimeter Fluke 289C, although the price is as high as 600 US dollars, still appears in the sales list of the United States and Asia all year round. At present, Fluke's multimeters have entered the market of more than 100 countries, and maintain a high reputation in each country.
 
From the early classic first-generation handheld multimeters 8020 and 8060 to the current flagship 87V and 289C, Fluke has maintained first-class accuracy and reliability for several generations of handheld multimeters, and it can be said that it is Fluke that has made users realize the potential of handheld multimeters. After decades of operation, Fluke is now unshakable in the field of handheld multimeters, and has won almost all the top spots in North American review websites such as bestreviews and Toolnerds.
 
The durability of Fluke multimeters is legendary, and some 8060s produced at the end of the last century are still highly accurate today, twenty years later. In contemporary times, Fluke provides a "lifetime limited warranty" for 80, 170, 280 and other series of products, and you must know that the vast majority of multimeters in the industry only have a warranty period of 1~3 years. Generally speaking, the second-hand market for ordinary tools is not too active, but Fluke is an exception. Due to its durability, used Fluke is always a good choice for users who are looking for both reliability and cost-effectiveness.
 
Fluke has always had very strict requirements for safety. In addition to the safety and rationality of the circuit design, in terms of component quality, the expensive fuses used by Fluke are definitely a hallmark. Almost all models use a 1000V withstand voltage ceramic tube fuse, which is much better than some lower withstand voltage or glass tube fuses. In addition, most Fluke multimeters have a CAT III or higher security rating, and many of them can reach CAT III 1000V or CAT IV 600V. What's more, the CAT grade of Fluke multimeter is certified by UL, CE, CSA and other authoritative organizations, there is no problem of false standards, and the reliability will be better.
 
The Fluke product line is very complete and can be divided into two categories in general. One is the POLO series for domestic users, and the price is relatively low. The other type of products is aimed at the global market, including China, and has stronger product strength.
 
At present, there are three models of POLO series: 15B, 17B and 18B, and the price is 500~800 yuan. In terms of reliability, the three multimeters maintain Fluke's first-class standards, and the 17B is one of the better ones, with a maximum reading of three and a half 3999 and an accuracy of 0.5%. In addition to measuring resistance, voltage, current, capacitance, frequency, and temperature, it also includes three additional functions: maximum value recording, data holding, and relative value measurement. In mid-to-high-end multimeters, these are also the three most commonly used functions. In practice, the data hold function freezes the screen reading, making it easy to record data after the pen leaves the circuit. The maximum value recording function is often used in circuits that measure variations, and can record the maximum and minimum values of data. Relative measurements allow you to set a measurement to "0" in order to calculate the difference. The most commonly used function is to set the resistance of the watch pen to "0" when measuring the resistance to eliminate the error caused by it.
 
Compared with the international version of the Fluke multimeter, the price of the three models of 15B, 17B and 18B is slightly lower, at 500~800 yuan. However, a slight sacrifice was made in terms of performance, the measurement response was not very fast, and none of the three multimeters measured true RMS. These multimeters of the POLO series are called "average response multimeters" and measure readings based on a sinusoidal alternating current as a template and calculated from the average voltage. The advantage of this method is that it is simple, and the measurement of pure sine wave alternating current may be slightly better than that of true rms meters, but the measurement of circuits such as square wave or triangular wave will produce large errors.
 
Although the products for the global market are more expensive, they do not have the more or less disadvantages of the POLO series. At present, there are mainly 115C/117C, 175C/177C/179C, 87V, 287C/289C four series, product positioning and measurement accuracy in order to increase one by one, 289C accuracy can reach 0.025%, the maximum count is 50000 (four and a half digits), is one of the top handheld multimeters in the industry.
 
The product power of 87V is slightly worse than that of 289C, but the popularity may be higher, mainly because the function of 87V is just right. This multimeter has an accuracy of 0.1% and counts at 20,000. In contrast to the ultra-high accuracy of the 289C, Fluke did not equip this high-end multimeter with a PC connectivity. This means that Fluke is positioning it more for on-site maintenance, and if the nature of the work requires reliability, 87V is definitely one of the best options.
 
The 87V has rare advanced features such as a low-pass filter, peak recording, bar reading, and low-impedance measurements. It is worth mentioning the peak recording and low-pass filter, which are the more common high-end features on multimeters. Although the peak function does not appear to be much different from the maximum-value records mentioned above, it can capture data more frequently, typically at intervals of a few hundred microseconds, so that circuit transients can be captured more accurately. Low-pass filters can intercept voltages above 1000Hz, which helps filter out some of the noisy high-frequency signal noise in the circuit.
 
Although the product power is absolutely first-class, the price of the four series is not as affordable as the POLO series. The lowest 115C is around 1200 yuan, and the highest 289C is about 4500 yuan. However, Fluke also has some relatively cheap products, such as the portable Fluke 101 and 107, the price is only 300~500 yuan, this kind of instrument is small but only has the basic measurement function, the 101 series can not even measure the current, it is more suitable for portable use.