4-20mA Signal Generator Adjustable Constant Current Source Digital Analog Generator + 12V Power Supply

 Features:
- Analog Circuit Adopted: Compared with current generators using digital circuit, the signal generator avoids secondary pollution to output current caused by analog-to-digital conversion and digital-to-analog conversion process. Simple circuit features no radiation, pure current, no ripple and stability.
- Easy Operation: It is convenient to wire. Turn the knob to operate and it outputs after adjustment without delay.
- Wide Power Supply Voltage: Input DC 5-28V. 12-24V is recommended.
- Reverse Connection Protection: Thanks to reverse connection protection for input voltage, the instrument does not work and will not burn out when it is connected reversely.
- Standard Current Output Range: It can produce and output 4-20mA current by manually adjusting the potentiometer on the product. It is perfect for occasions where analog current 4-20mA output is needed.
- Smooth Current Regulation: The wire-wound potentiometer is used to adjust current smoothly, avoiding faults such as sudden change of resistance often caused by the general carbon film potentiometer.
- Precise Display: With an ammeter, it can display accurately.
- Convenient Monitoring: With a dial, it can quickly locate and identify the operating state of the device according to the scale.
- Fixed Output Current: The output current automatically stays constant at the set point to meet users' needs. When it is used as a constant current source, the output current should not exceed 20mA.
- Applications: Signal source generation, valve adjustment, inverter control, PLC debugging, instrument testing, LED test, and analog transmitter output.
- Hand-held Design: It is easy to hold and turns your jobs into a pleasure.
- To test whether the output is normal, you can make a multimeter (DC current) and terminals of current + & current - short connected. And then compare the displayed values to the multimeter readings.

Wiring:

Output Impedance Matching:
The internal resistance of the output signal must meet the following requirements:
According to the formula: I = U / R (current = voltage divided by resistance)

Therefore, the power supply voltage divided by the signal internal resistance is equal to the maximum current that can be generated at the signal receiving end.

In addition, our current generators have a certain internal resistance.

So come to a formula like this:
Supply voltage / (customer signal internal resistance + internal resistance of our current generator) = constant current output

Our module can be powered by 4-35V. If the power supply voltage is too low and the internal resistance of yours is large, the constant current generated by the module will not be enough.

The module's signal matching requirements:
- Powered by 24V, the internal resistance of signal shall not exceed 1000Ω.
- Powered by 12V, the internal resistance of signal shall not exceed 500Ω.
- Powered by 5V, the internal resistance of signal shall not exceed 200Ω.

Attention: If your signal internal resistance is greater than the above parameters, you can solve the problem of insufficient current supply of the constant current source by increasing the supply voltage or reducing the internal resistance of the signal. The power supply voltage cannot be increased above 28V.

Package Included:
Output Impedance Matching:
The internal resistance of the output signal must meet the following requirements:
According to the formula: I = U / R (current = voltage divided by resistance)

Therefore, the power supply voltage divided by the signal internal resistance is equal to the maximum current that can be generated at the signal receiving end.

In addition, our current generators have a certain internal resistance.

So come to a formula like this:
Supply voltage / (customer signal internal resistance + internal resistance of our current generator) = constant current output

Our module can be powered by 4-35V. If the power supply voltage is too low and the internal resistance of yours is large, the constant current generated by the module will not be enough.

The module's signal matching requirements:
- Powered by 24V, the internal resistance of signal shall not exceed 1000Ω.
- Powered by 12V, the internal resistance of signal shall not exceed 500Ω.
- Powered by 5V, the internal resistance of signal shall not exceed 200Ω.

Attention: If your signal internal resistance is greater than the above parameters, you can solve the problem of insufficient current supply of the constant current source by increasing the supply voltage or reducing the internal resistance of the signal. The power supply voltage cannot be increased above 28V.

Package Included:
- 1 x 4-20mA Current Signal Generator
- 1 x 12V Power Supply

Package: Normally we use the standard exporting packaging. We also can according to clients' request .

 Shipping : 

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier  we are co-operating at present.

2. By Air: Delivery from the Shanghai airport to customers’ destination city air port.

3. By Sea: Delivery from the Shanghai sea port .

Q1. Can I have a sample order?

A: Yes, we welcome sample order to test and check quality.

Q2. What about the lead time?

A: Samples arrived often need 3-5 days.

Q3. Do you have any MOQ (minimum order quality)limit?

A: Low MOQ, 1pc for sample checking is available.

Q4. How do you ship the goods and how long does it take to arrive?

A: We often ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping is also optional.

Q5. How to proceed an order?

A: Initially, let us know your requirements or application. Besides, We quote according to your requirements or our suggestions. Thirdly, customers confirms the samples and places deposit for formal order. Finally, We arrange the production.

Q6. Is it acceptable to print my logo on the product?

A: Yes. Please inform us formally before our product and confirm the design firstly based on our sample.

Q7: Do you offer guarantee for the products?

A: Yes, we offer one-year warranty for our products.

Q8: How to deal with the flaw?

A: Our products are produced in strict quality control system and the percent of pass is often maintained over 99.8%

Please do not hesitate to contact me if you need any further information

Whatsapp/Tel/Wechat: 8619902906050

Web: 

Address: Room 303 Building 2,Youpin Cultural and Creative Park,Zhangkeng,Minzhi Street,Longhua District,518131,Shenzhen,China(Mainland)