practical! Electronic scales cheating tricks reveal secrets, teach you to easily understand the shortcomings

If you ask where is the most lively atmosphere...

That must be the vegetable market!

In a bustling,

The "study" between the aunts and the vendors,

It can be described as a classic.

Aunt: This dish was sold four times yesterday. Is it six pieces today?

Boss: It’s been raining recently, and it’s drowned a lot!

Aunt: The leek is so wet, you lick the water... just a little more? Boss, are you not sure about this?

Boss: I am doing a repeat business, which is not allowed! A total of six three.

Aunt: Hey, I don't have any change, or if I have wiped it for me, I will come back to you next time.

boss:……

The electronic price scale is probably the most widely used measurement tool in everyone's life, but some people just buy it and leave it, and look at the scales (such as Xiaobian); some people carefully select the goods and shop, keep an eye on the boss. Every action of weighing. After all... electronic scales can also be cheated!

Manipulation 1: Raise a corner

Some unscrupulous traders use coins, cardboard, and foam to raise the height of the body, making the electronic scales uneven, resulting in short shortages.

Technique 2: Impact weighing.

Throw the merchandise into the weighing pan and use the inertia to instantly increase the reading of the electronic scale. Experiments have shown that if the actual weight of a piece of meat is 0.155 kg, the reading can reach 0.198 kg when thrown hard on the scale, which is 43 grams heavier than the actual.

Technique 3: Remote control increment

A remote control receiving device is installed in the machine. When weighing, simply press the remote control switch and the weight can be increased by 20% or more.

Receiver installed in the electronic scale

Technique 4: Circuit modification

Add a cheat switch, set 2-3 gear positions, only 1 gear position is accurate.

After the circuit is modified, the 2 kg weight can weigh 5.4 kg (2.7 kg).

The first two methods can be found as long as they are carefully observed. The latter two methods are more subtle, but they are not easy to succeed!

In order to protect the legitimate rights and interests of consumers, the National Metrology Law stipulates that mandatory inspection work instruments for trade settlement shall be subject to compulsory verification. The electronic scale belongs to the electronic measuring instrument, in which the key component load cell will have zero signal change and aging as the use time is extended, which affects the weighing accuracy. This requires the re-calibration of the statutory metrological verification agency or the authorized metrological verification agency under the government's metrological administrative department and the item-by-item inspection in accordance with the national verification procedures, so that various disputes can be avoided in time.

All of the above are all "tangible" cheating methods, and the following intangible methods are more "advanced"...

Technique 5: Reduce the unit.

At present, the electronic scales in the market are accurately priced. When inputting the unit price of the goods on the electronic scale, the standard input method must be inputting 4 numbers. For example, if the unit price of a product is 12 yuan / kg, you must enter "1200".

1.25 kg of goods, the unit price of 10 yuan a kilogram, if it is normal, it should receive 12.5 yuan, but if the price is deliberately set to 0.1 yuan a kilogram on the electronic scale, the electronic scale will automatically round the 0.125 into 0.13, then zoom in 100 times, then You can charge 13 yuan to the customer.

In fact, students with good mathematics should be able to immediately find out that since they are rounded off, there must be a "household" in the "in". If the merchant does not standardize the input unit price on the electronic scale, the business is automatically rounded according to the electronic scale. In the transaction, sometimes consumers will be overcharged by 0.1 yuan to 0.4 yuan, and sometimes consumers will be reduced by 0.1 yuan to 0.4 yuan.

If you don’t talk, you can’t do it. Let’s call it personally~

Put 3 apples on the electronic scale, the display weight is 760 grams, according to the apple unit price of 11.00 yuan / kg according to the specification, enter the four-digit "1100", the final display price is 8.36 yuan.

Instead of pressing the four-digit input specification, press "11" to enter the unit price, and the total price displayed is 0.08 yuan. If the merchant collects money according to 8 yuan, the consumer can be less than 0.36 yuan.

Very few merchants will try the above two ways of inputting the unit price, and then collect the money according to the number of more. For this few cents, it’s also a trick!

Anti-cheating tips:

1. To obtain the corresponding license, the electronic price scale shall be marked with the “CMC” mark on the scale. (CMC is the “Made in the People's Republic of China for the manufacture of measuring instruments license” mark, which is the English abbreviation of “China Metrology Certification”, which means the license for measuring instruments manufactured in China.)

2. The electronic scale should also be marked with a mandatory verification mark.

3. Before and after weighing things, pay attention to observe whether the zero point of the electronic scale is normal.

4. When the electronic scale is placed on a foam or cardboard box, there may be some error when weighing. Don't worry, most of these errors are within the allowable range.

5. At present, most of the standardized markets in the city have self-service fair scales. For consumers who have disagreements with symmetrical results, they can be weighed at the self-service fair scale or the fair scale.