Easy Field Configurable Input Ranges for       Platinum and Copper RTDs

Eliminates Ground Loops with 1800VDC Input-to-      Output Isolation

ASIC Technology

Five Field Configurable Output Ranges: 0-5V, 0-       10V, 0-1mA, 0-20mA and 4-20mA

Flexible Power Supply Accepts 9 to 30VDC

The Ultra SlimPak G418 is a DIN rail mount, RTD input signal conditioner with 1800VDC isolation between input, output and power. The field configurable input and output offers flexible, wide ranging capability for Platinum and Copper RTDs.

The input of the G418 Ultra SlimPak can be configured for any one of up to sixteen temperature ranges (see Tables 1 & 2). The output is linear to the RTD temperature input and can be set for either 0-5V, 0-10V, 0-1mA, 0-20mA or 4-20mA.

For an RTD and thermocouple input temperature transmitter with improved accuracy and stability, see Action I/Q model Q488. PC or DIP switch programmable.

Wide ranging, precision zero and span pots allow 50% adjustablity of offset and span turn-down within each of the sixteen switch selectable ranges. For example, the 0-500°F range could be offset and turned down to provide a 4-20mA signal representing 0-250°F (or 250-500°F).

Application
The Ultra SlimPak G418 field configurable RTD input isolator is useful in eliminating ground loops and interfacing RTD sensors to data acquisition and control systems.

Three way isolation completely eliminates ground loops from any source. Isolation protects expensive SCADA systems from ground faults and significantly reduces the effect of high common mode voltages which are prevalent in many RTD applications.

The constant current RTD excitation circuitry uses the third lead of the RTD to sense and compensate for the RTD lead resistance, resulting in an accurate RTD temperature measurement.

High density DIN rail mounting offers an extremely compact solution for saving valuable panel space.