The digital indicator D122 indicates measured values of intrinsically safe current circuits from 4 up to 20 mA in hazardous areas. The device is powered by measure circuit, therefore an extra power supply or batteries are unnescessary. The indicator measures the current, scales the measured value and displays finally the result on the LCD. The internal 24 bit A/D conversion achieves a stable indication even at 4 1/2 digit resolution. For trend analysis, the measured signal is also be displayed on a 41 segment bargraph. It's possible to scale the bargraph separately.
The indicator D122 is available in several housings. Furthermore with alarm monitoring option the indicator has two intrinsically safe alarm outputs. These outputs change their state, when the measured value exceeds its alarm limits. It is possible to configure the outputs as normal open or normal closed circuits. Additional the alarm limits appear graphically on a second bargraph. On one look you're sure that the measured value is in its limits. There's also the possibility to use the display as "counter" which gives the sum of the measured values (type D122.Z)
Ergonomics:
• µ-processor technology for extensive configuration
• scaleable by keyboard and display, without reference current
• separately scaleable bargraph (zoom)
• current control button
• keeps the configuration by turn off
• ability to change configuration during operation
• exchangeable dimension signs
