Description

Brand: GWUNW/ Guichen 200A Red + Blue (only watch heads) 200A Red + Red (only watch heads) 100A Red + Blue (only watch heads) 100A Red + Red (only watch heads) 50A Red + Blue (only watch heads) 50A Red + Red (only watch heads) 30A Red + Blue (only watch heads) 30A Red + Red (only watch heads) 20A red + blue (table head only) 20A red + red (table head only) 10A red + blue 10A red + red 5A red + blue 5A red + red 2A red + blue 2A red + red supporting shunt 200A supporting shunt 100A supporting shunt 50A supporting shunt 30A Supporting shunt 20A Article No. : VI3281 Decoration and construction content: hydropower project

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Purchase notes:

1. The voltage range of this product is 0-200V. The current range can be selected according to your actual needs.

2.2a 5A 10A meter uses A built-in shunt without additional shunt

3.20A 30A 50A 100A 200A meter head must be connected to the shunt can be used, even if the test 1A current also need to add the shunt (novice attention). If you don't have a shunt at home, you need to buy our shunt for use!

Connection mode: The connection mode of this table is flexible. It can share power supply with the tested equipment, or it can use independent power supply, just change the wiring can!

Working power supply: 3.8-30V DC power supply with reverse connection protection (but the reverse connection can not exceed 30V)

Power consumption: <=20MA, very power-saving

Refresh speed: about 3 times /S

Test accuracy: voltage: range x0.1% +2 word current: range x0.1% +2 word range selection skills: error size and range is closely related, small range can be smaller error

Display color: First specification: voltage red + current red second specification: voltage red + current blue

Dimensions: 48mm*29mm*20mm(plastic shell size)

Hole size :45.5mm*26mm

The voltmeter control part adopts strong CPU core, CPU pin number can reach more than 20 feet, performance more than the average 16 feet or 18 feet of Taiwan "or" local "one-time burn chip, the chip can be repeated burning program, so every piece of voltmeter can separate debugging, achieve high accuracy, it is out of reach for ordinary disposable single chip microcomputer. The accuracy of the voltmeter is higher than that of ordinary low-price multimeters (for example, the multimeters of some brands in China are still very low in accuracy, so please do not take them as the standard for comparison). The multimeters used in our shop are all American brand multimeters.

Dual-color display effect

Monochrome display effect

Measurement effect, very high accuracy (this test is based on 30V 10A meter head test results as an example, other range similar effect)

Wiring method: please wire according to the drawing, special attention, the load can only be connected to the positive pole, can not be connected to the negative pole! Otherwise burn the table!

The following is an ammeter connection with an external shunt:

Special note: for the meter head with external shunt, be sure to connect the shunt can be energized! Remember that!

Special attention: if the meter head working power supply and test current from the same power supply (as shown below)! At this time to the shunt between the black ground must be short, can not be arbitrarily lengthened, add too long will cause a lot of error. For the place that has to lengthen, must change very thick wire (can test the effect by oneself)! A good way is to put the meter head and shunt close, do not lengthen the ground. For the meter head working power supply and test current using isolated power supply, there is no such problem! Therefore, in order to ensure the accuracy of measurement, it is best to use isolated power supply, if it is not convenient to use isolated power supply, you can add an isolated module! The function of the isolation module is like a transformer, the power supply into an isolated power supply to power the meter head!

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