Calibration Instruments The ADG400 is designed for use as part of a hygrometry calibration system. It is capable of repeatable generation of dew points across a range of -80 °C...+20 °C, when used in conjunction with the Michell Instruments PSD2 pressure swing dryer. The generation technique is based on the volumetric mixing of dry and wet gases. It gives the fastest response when changing between set points in comparison to other dew-point generator technologies (such as two-temperature, two-pressure or a combination of both). Highlights • Full-color touch-screen HMI • 11-point factory programmed dew-point setpoint table from -80 °C to +20 °C at 10 °C intervals • 13-point user programmable dew-point setpoint table • 3 programmable 13-point automatic calibration profiles with customizable timings • Change set points using serial commands via built-in USB port • Remote Access mode allows HMI to be operated using a connected PC • Temperature-controlled enclosure to ensure output stability and repeatability Powerful user-friendly HMI The ADG400 features a full color touchscreen, making setup and operation quick and simple. The main screen shows status and diagnostic information, and allows Manual, Profile or Remote modes to be selected and set-points changed at the touch of a button. 11 factory-programmed set points at 10 °C intervals enable standard calibrations to be carried out quickly and easily, while 13 user-customizable set points enable intermediate points to be generated based on specific calibration requirements. The built-in set-point editor gives complete control over the output to the user. Remote control and operation Remote mode allows the ADG400 to accept serial commands over the USB port to change set points, allowing the dew-point generator to be completely integrated with a customer's own software calibration system. In addition, the HMI can be mirrored on a PC via the USB port ,which offers another flexible option for remote operation, for instance over a remote desktop connection. Save time and reduce costs with unattended calibrations In Profile mode, unattended calibrations are made possible when the ADG400 is used in conjunction with a Michell S8000 RS or S8K -100 reference chilled mirror hygrometer. A built-in profile editor allows timings to be customized, and set points from either the factory or user tables can be selected as desired. The time and cost-saving benefits are obvious, as calibrations can be run overnight or during the day without user intervention. Operating principle The first mixing stage in the ADG400 uses a parallel configuration of high-precision mass-flow controllers to precisely control dry and saturated air flow rates. This stage enables the generation of dew points from +20 °C to -30 °C. The second mixing stage uses an additional two mass-flow controllers to dilute the output of the first stage with additional air from the dryer. This allows dew points from -40 °C to -80 °C to be generated. MICHELL Instruments

Calibration Instruments Technical Specifications Performance Output Range Output Stability Full-color touch screen 11-point factory setup set-point table @ 10 °C intervals. 13-point user configurable set-point table Operating Modes Manual, Timed Profile, Remote Command Electrical Specifications Digital Communications USB (Virtual Serial Port) for remote operation of HMI via a PC, or changing set points via remote commands IEC Socket 80...264 V AC (47...63 Hz) or 113...370 V DC Power Supply Power Consumption Operating Specifications Operating Temperature Storage Temperature Gas Input Requirements...