Only two wires are needed to connect EA 4220-CL to your signal source. No soldering or special connectors - the wires will be plugged into screw terminals; decimal points are selected by jumpers. Mechanical mounting is even more simple: Just push the snap-in box (90x50mm) into your front panel - Ready. Since the input signal ranges from 4 to 20 mAmps, there is always enough energy to supply the low-power panel meter. Versatile adjustments for zero offset and span make the module suitable for a wide range of applications. Excellent contrast is achieved by the easy to read LCD display with 3?digit and 18mm / 0.7" digit height. A precison band gap reference offers a more constant readout than on other panel meters. For other applications there are three more, similar modules in the same box: EA 4220-AT measures current from 0 to ±20mA. Due to this input range, a supply voltage (5V/<20mA) is needed. Don't worry about INLO and GND potentials - the on-board DC/DC converter guarantees isolation of supply and signal input. EA 4220-VTB is a 0 to ± 2V voltmeter with more than 100 MOhms input resistance. Supply voltage (5V/<20mA) and input signal are isolated by an on-board DC/DC converter. A special feature is that the read-out at 0V input can be shifted. EA 4220-VB voltmeter offers the same input range, but can be supplied with a DC voltage of 5V ... 12V ... 24V (other supply voltage on request). In most applications only three wires are needed: Supply, Ground, InHigh.
More informations you will find in our complete data sheet.
Jan. 22nd 1999 Herbert Demmel