YOKOGAWA ALR121-S51 Serial Communication Module
The YOKOGAWA ALR121-S51 is a loop-powered indicator designed for process monitoring with a 4-20mA input signal range. It features a 3.5-digit LCD display and is housed in a compact, explosion-proof enclosure suitable for hazardous areas. Typical applications include monitoring pressure, temperature, and flow in industrial settings. Compared to the ALE111-S50, the ALR121-S51 offers enhanced readability with its larger display, while the ALP121-S00 provides similar functionality but in a non-explosion-proof design.
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