USB 4-20mA Current Loop InputsĪll endNode devices are equipped with a USB port. In addition, the internal I2C Communications bus is also isolated to prevent noise contamination. In the case of endNode devices, 4-20mA Current Loop Inputs include a isolated 10V, 16V, or 24V Power Supply (power supply options are chosen at the time of purchase). In contrast, 4-20mA inputs require an external power supply to power the sensors. The biggest difference between 4-20mA inputs and 4-20mA current loop inputs is that 4-20mA current loop inputs INCLUDE isolated power to supply the remote sensors with power. Current readings of less than 4mA are typically considered open loop (disconnected). Definition of 4-20 Current Loop InputsĬurrent Loop Inputs are best defined as inputs that accept changes in current in the range of 0-20mA however, the range may be wider in some applications. All endNode devices are available in 900MHz, 868MHz and 2.4GHz versions, but may have a reduced wireless range when using 868MHz and 2.4GHz options. NCD endNode devices may also be used to repeat data from NCD Enterprise wireless sensors, as they act as a mesh network of repeaters to help sensors extend the wireless range. All endNode devices are secured using 128-Bit AES Encryption. endNodes form a wireless mesh to extend communication range beyond the typical 2-Mile line-of-sight range by hopping data between devices to reach the intended target device. Use a single computer to target several endNode devices in the area or use multiple computers to talk to multiple wireless endNodes. Query each endNode up to six times per second using wireless communications. #4 20MA WIRELESS LINK SERIAL NUMBER#This serial number is used to target the remote endNode controller with a 4-Channel 4-20mA input read request. Wireless Targeting and Mesh CommunicationsĮach endNode controller includes a unique serial number. Read wireless 4-20mA inputs in industrial buildings, as this wireless technology has the best wireless penetration through walls currently available. This communications technology is rock solid in electrically noisy environments. Read wireless 4-20mA inputs on the factory floor, as we have tested this wireless technology in factories in excess of 1 mile indoor line-of-sight with heavy industrial machines operating. Use several ASM1-2 endNodes and talk to each endNode using secure wireless communications. Read industrial 4-20mA pressure sensors, temperature sensors, flow meters, ultrasonic sensors, level sensors, force sensors, weight sensors, distance sensors, strain sensors, and much more. The ASM1-2 makes it easy to read industrial 4-20mA sensors with an incredible 2-Mile wireless communication range using 128-Bit AES Encryption. Introducing the world’s most powerful Wireless 4-20mA Current Loop input transmitter.
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