The APT-35L will convert a selected AC Signal into a proportional, linear and highly accurate 4 to 20mA current output signal. An internal transformer isolates the input from the output enabling the transmitter to withstand large momentary inputs. The input to output isolation, high surge current capability and high output signal-to-noise ratio makes the transmitter highly immune to ground loop signals and RFI problems. Site calibration is performed by means of Zero and Span multiturn potentiometers for fine tuning. The transmitter is equipped with a test terminal that enables the user to measure the output current without breaking the current loop. The test terminal gives a voltage output (measured across an internal 10 ohm resistor) proportional to the output current. The transmitter is housed in polycarbonate plastic enclosures suitable for mounting on DIN rail.
