prov:value
| - In certain embodiments, the gas collection chamber 12, the conduit 14, or the connectors 30 may include a calibration element 42, such as a coded resistor or EEPROM or other coding devices (such as a capacitor, inductor, PROM, RFID, a barcode, parallel resonant circuits, or a colorimetric indicator) that may provide a signal to the processor 40 related to the volume and other characteristics of th
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