5-bit high-precision DC digital display digital milliamp microampere ammeter hea

Product Description

Shipping list

Invoicing list of KV-AMP070m module

Physical module+module data PDF+ after-sales technical support+electrostatic bag packaging+wiring X2

Warm tip:

(1) The module interface of our store is clear and the performance is stable. Please verify the function in the corresponding experimental conditions with the information provided by our store.

(2) The basic parameters of this module are all in the details page. PDF documents of module parameters and indicators are provided, but schematic diagrams and engineering documents are not provided. Please ask the buyer to know. If you have any operational problems, please consult customer service.

(3) Before using the module, please read the details page of this module carefully to understand the power supply and usage restrictions, so as to avoid damaging the module due to improper operation.

(4) All modules in our store are guaranteed to provide real module parameters, functions and pictures, and all modules are tested before delivery.

Module Description

The ammeter head adopts the scheme of high-precision reference and high-precision sampling resistor, which has accurate measurement and high resolution.

When the input current reaches 70mA, the input voltage drop is only 70mV, which has little influence on the measured system.

Using bipolar design scheme, the bidirectional positive and negative currents up to ±70mA can be measured, and the current can be measured normally without deliberately distinguishing the wiring.

With anti-reverse connection circuit, the module will not work when the power supply is reverse connected, but it will not cause damage to the circuit.

With overcurrent protection circuit, the input current as high as 1A will not cause damage to the circuit. When the current returns to plus or minus 70mA, the module will immediately measure the current value normally without restarting.With overcurrent protection circuit, the input current as high as 1A will not cause damage to the circuit. When the current returns to plus or minus 70mA, the module will immediately measure the current value normally without restarting.

The serial communication function of the module is integrated, and the module current data can be read back by MCU, computer (USB to serial port module is required) and other devices. Modbus protocol is adopted, which is convenient for large-scale integration and industrial application.

Precautions for Module Use

1. Do not use a power supply exceeding the nominal supply voltage range to supply power to the module.

2. The voltage shall not exceed 30V when the connection is reversed;

3. The module can withstand overcurrent up to 1A for a long time (more than 1 hour); It can withstand 1.2A peak current (less than 50mS per second). (The input of excess current to the module may cause irreversible damage to the module. )

Answers to frequently asked questions

Q: Is there a current acquisition module with higher accuracy or wider range?

A: All kinds of current and voltage acquisition modules in our store are being developed one after another, including products with higher range and higher precision (as low as 1pA). In addition, we can also provide customers with customized services such as function customization and size customization. Please consult customer service for details.

Q: When the current is measured, what is the situation that the display has been drifting?

A: When the user receives the product and tests it, it is necessary to ensure the stability of the current to be tested, so that the stability of this product can be accurately measured. At present, the common error operations collected are:

1. The battery string resistance scheme is adopted to provide the current to be measured: Because the voltage of the battery decreases gradually during use, the generated current also decreases gradually, and the display naturally decreases gradually (please use a stable power supply to generate current for testing);

2. Use small package resistance or large resistance current limiting to generate current: Small packaged resistors tend to have low power and poor heat dissipation, and when current passes through them, they will gradually become hot, and their resistance will drift with the temperature drift. I = V/R, R will drift, and I will naturally drift. The principle of large resistance current is similar. For example, when the current to be measured is 50mA, the larger the resistance, the greater the power, and the faster the heat will be generated (it is recommended to use high-power small resistance current limiting to generate current, such as 50W50Ohm or 50W50Ohm.

Q: Can it be powered by batteries?

A: Sure. The module has a wide power supply voltage. As long as the battery voltage is within the nominal power supply range of the module, it can be powered by batteries.

About Prime Living

Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.

We are committed to fast order processing, secure packaging and reliable tracked shipping to provide an excellent shopping experience.

Shipping policy

We carefully handle each order to ensure your package arrives quickly and safely. Please note that factors such as weather, postal traffic, or carrier performance may occasionally cause delays beyond our control.

We provide free shipping and dispatch all orders within 2 business days of payment, often sooner. All shipments are sent via international express air shipping, with a tracking number provided so you can follow your order every step of the way.

. Please provide a physical address, as we do not ship to P.O. Boxes.

Returns

Your satisfaction is important to us. Hexlight offers a 14-day Free return policy: if you are not fully satisfied with your purchase, you may request either a full refund or an exchange. All return shipping costs are fully covered by us.

Condition

Brand New

Shipping

This item is shipped directly from our supplier in China with tracking.