Gas flow computer 415

Displays mass flow, corrected volume and energy flow Accepts 4-20mA and frequency flow inputs Temperature and pressure compensation Dual ranged DP transmitter inputs Operates from 14-28V dc or ac mains Simplified programming Data logging output The 415 Steam and Gas Flow Computer incorporates the following compensation equations for gas and vapours: Ideal Gas Law using temperature and pressure correction, but where compressibility correction is not required. General Gases where compressibility is calculated using the Redlich-Kwong¹ state equation. This equation is suitable for gases which have known properties, and information on common industrial gases is provided in the operating manual. Natural Gas using the NX-19² equation to calculate super compressibility. Steam Equations for both saturated and superheated steam. Mass and energy flow rates are calculated using standard equations to determine the specific weight and enthalpy of steam. RTD OR 4-20MA TEMPERATURE INPUTS The backlit alphanumeric display simplifies programming and provides a clear indication of all parameters, as well as engineering units. The 415 is fully programmable and all operating parameters are entered via the front panel keypad. The gas and steam flow computer is available with direct RTD input (415R) or with 4-20mA temperature input (415A). Both accept a 4-20mA pressure input.