Additel 878 Reference Dry Well Calibrators take temperature calibration to the next level. With three models to choose from, ranging from -40 to 700°C, there’s a perfect fit for every calibration need. The Process Calibrator option adds an external reference input, a two-channel readout for UUT’s and a full complement of capabilities to help with everything from measuring temperature sensors, to calibrating thermocouples, self-calibrating the reference well and configuring HART transmitters. Each unit comes with a large touchscreen display and dual-zone control as standard.