Critical Orifice Assembly

 Meets or exceeds the following methods/laws/requirements:   US EPA Method 5: Section 16.2.1.1 (Selection of Critical Orifices) Section 16.2.2 (Critical Orifice Calibration) Product Description Critical Orifice is used to calibrate the dry gas meter (DGM) of various metering consoles. This calibration instrument is approved by the US EPA as calibration standard for calibrating a dry gas meter, in place of the wet test meter stated in Section 16.1 of the US EPA Method 5, provided that the critical orifices are selected, calibrated, and used in accordance with the instructions included in Section 16.2.1 of the US EPA Method 5. This product connects to the following (non-exhaustive) list of products from Aer Sampling: Aer Sampling Metering Consoles (sample inlet) Other Applicable Documents:N.A.   Product Specifications Connection: 1/2-inch quick connect Material: Brass with Ruby orifice Sizes (nominal): Catalog ID Size Orifice diameter Choked flow rate inch mm cfm LPM