The HT8051 is a professional portable digital process calibrator designed for generating and measuring DC voltage up to 10 V and DC current up to 24 mA. In generator mode, you can manually select between 0-20 mA and 4-20 mA, or display the percentage values based on the set current (0% = 4 mA, 100% = 20 mA), as well as choose from various ramp output signals. Options include a slow linear ramp, a fast linear ramp, or a step ramp. An innovative control knob allows for easy adjustments of the output signal with a resolution of just 0.001 mA or 0.001 V. The HT8051 also enables the measurement of current generated by external transducers or simulating a current transducer. Each function can be conveniently selected directly via the function keys and the rotary knob. The HT8051 is the ideal solution for the most common industrial applications and laboratory use.