Garrow J S, Webster J D
Hum Nutr Clin Nutr. 1986 Jul;40(4):315-21.
An indirect calorimeter is described with which it is possible to make recordings of oxygen uptake, carbon dioxide production and respiratory quotient in one or two subjects simultaneously. The gas analysers sample expired air from the two patients and room air in a continuous cycle which lasts 15 min; a microcomputer is used to switch solenoid valves, read the gas analysers and output the results to a printer. A butane lamp is described which is made from components of a camping cooker. This can be used to simulate two patients, and enables the operator to check the function of the calorimeter quickly and inexpensively. If there is an error in the system the printout indicates whether the fault is likely to be a leak or an error in a gas analyser.
本文描述了一种间接热量计，利用它可以同时记录一至两名受试者的氧气摄取量、二氧化碳产生量和呼吸商。气体分析仪以持续15分钟的连续循环方式对两名患者呼出的气体和室内空气进行采样；使用微型计算机来切换电磁阀、读取气体分析仪的数据并将结果输出到打印机。文中还介绍了一种由野营炊具部件制成的丁烷灯。它可用于模拟两名患者，使操作人员能够快速且低成本地检查热量计的功能。如果系统出现错误，打印输出会指示故障可能是泄漏还是气体分析仪的错误。
