The Transmille 4000 Series is a high-performance advanced multiproduct calibrator designed for laboratories, manufacturers, and design facilities requiring a wide range of electrical outputs with accuracies up to 8 ppm . Building on the trusted reliability of the 3000A series, it offers an updated user interface accessed through a large 7-inch capacitive touchscreen that enables advanced functionality, including a built-in procedure mode and inbuilt connection prompts to minimize operator errors .

This calibrator offers extensive electrical calibration capabilities, featuring DC and AC voltage from 0 to 1025V, DC and AC current from 0 to 30A, 2 and 4-wire resistance measurements up to 1GΩ, variable capacitance to 100mF, and frequency from 1Hz to 10MHz . AC current is supported up to 30kHz maximum frequency . Additionally, it includes thermocouple simulation supporting types J, K, T, R, S, B, U, N, E, L, and C with ±0.09°C accuracy .

The 4000 Series features traceable self-verification functionality, allowing users to maintain confidence in their equipment by simply connecting an 8000 series digital multimeter to the rear of the unit and entering 'self-calibration mode'. The calibrator then automatically measures its outputs and generates a test report which can be exported to a USB memory stick for analysis or printed directly via a USB printer - ideal for in-situ or on-site applications .

Procedures can be loaded into the 4000 Series via USB memory stick, with results stored for integration back into ProCal calibration software . USB and GPIB interfaces are fitted as standard, and the unit features removable handles for portability . The calibrator weighs 23kg (50.7 lbs) and requires a 2-inch clearance behind the instrument for connections . A range of external accessories is available to increase workload coverage, including options for oscilloscope calibration, clamp meter calibration up to 1500A, and optical tachometer calibration .