Evaluation of the Sensidyne Toxic Gas Sensor for HF (Hydrogen Fluoride) Vapor

摘要

A diffusion-type electrochemical sensor is evaluated for the detection of hydrogen fluoride (HF) vapor, both for use as an area monitor safety device and as a stack gas monitor. Response characteristics of individual sensor assemblies are variable, but with frequent, proper calibration, the Sensidyne HF Toxic Alert device is demonstrated to provide accurate, sensitive, and relatively rapid response to this contaminant. We describe a calibration flow cell and gas permeation apparatus capable of delivering a predictable (and easily confirmed) concentration of contaminant to the sensor in a safe manner. 20 refs., 14 figs., 14 tabs. (ERA citation 12:050175)