That doesn't bother me because I am looking for cheap 0-20mA source and if I need an exact mA value I'll put meter in the circuit. The key advantage of the 4-20mA signal is its ability to provide accurate and stable data transmission over relatively long distances without significant signal degradation or susceptibility to interference. The output range can be set to 4-20MA for control equipment or 3-21MA as a debugging signal, while the display mode can also be adjusted to show actual current, 100% or 50. Conversely, it would translate fifty feet as the tank being full and would then transmit a twenty milliamp signal.

It is ideal to use in meter, sensor signal testing, PLC, DCS and other instruments signal debugging, etc. The internal UL Listed 1,800 mAh lithium-ion Grade A battery can power up the PD9502 for over 6 hours. Brightwin specailly designs current signal generators with various types of external shell or display mode for users to do integration or use in analog current signal controlling systems. The switch for the 12mA setting is actually adjustable via a potentiometer for the full 4-20mA range so I am not necessarily limited to discrete 1mA steps. Our team has completed projects for Fortune 500 companies as well as start-ups using both traditional and cutting edge technologies.It was a long time ago and I think we got a satisfactory output, but it may need "trimming" of component values. Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

re-chargeable battery embedded inside, *Automatic stopping recharging battery when battery has been fully charged.The PDA1001 includes a USB to Micro USB cable which can be used to recharge the power bank or power up the PD9502. Segments programmable curves output (stimulate real environment dynamic testing, each segment can be set: “t” run time, “A” starting current, “b” ending current). The resistor values shown are the sum of fixed plus trim pot, these are calculated values based on 1. I think this is what you want but if you want to read toward 0ma then a powered meter is the only way.

The field connections are on the Phoenix Contact style removable connector which makes testing and disconnecting the battery 'pack' easy. By 2012, Probots introduced 350 Indian and international brands to its platform, and this has only grown in number each passing year. For example, sensors like pressure transducers, temperature sensors, and level sensors might output a 4-20mA signal proportional to the measured parameter. With the mA signal set to 20 mA, the indicator or HMI should indicate the 100% or upper range value of the transmitter.I have a calibrator design based on the 317 regulator, it also allows me to do RTDs and simulate thermocouple inputs using the tables. Loop calibrators or other tools with mA sourcing functions are very useful for testing these devices. I tried rechargables once but they were more trouble than they were worth, a pair of batteries last over a year if you remember to turn it off or break the circuit. Crystal Clear Display: A 4-digit high-definition digital tube ensures accuracy, complemented by adjustable brightness levels (1-8) for optimal visibility in any environment.