Columbus Instruments Respiration Frequency Monitor: RM-80 呼吸頻率監控儀

RM-80為Columbus Instruments生產的呼吸次數計解決方案,RM-80可偵測到一個3公升容器內一隻小鼠的呼吸,可同時接上數個容器並偵測多隻動物的呼吸情形。RM-80同時擁有警告功能,若動物在10秒內沒有呼吸則自動發出警告通知操作人員。


General Information

The RM-80 measures changes in pressure produced by a subject respiring within an enclosed space. The changes in pressure reflect the depth of respiration while the cyclic variations of the pressure signal over time reveal respiration frequency (breaths per minute). This technique, commonly called whole body plythesmography, is the basic operating principle of the RM-80. Improvements made by Columbus Instruments have allowed this method to be employed in a chamber through which a constant flow of fresh air passes. This allows experiments to continue without the need for periodic refreshing of oxygen depleted air. The RM-80 also incorporates an improved differential method of pressure measuring that reduces errors and artifact caused by environmental variations of pressure in the work place. The combined design features of the RM-80 produce a reliable method for monitoring respiratory activity in small laboratory animals.

The RM-80 is a stand-alone system comprising a pressure sensor, chamber and a fresh air delivery system. The instrument displays respiration rate in breaths per minute. An apnea detection system signals an alarm condition if no respiration is detected for 10 seconds. The RM-80 provides connections that supply signals related to the monitored respiratory parameters. An analog voltage is available that is proportional to the pressure changes within the chamber. In addition, an analog voltage is available that is proportional to the rate of respiration. These signals may be presented to strip chart recorders or data acquisition systems. Other outputs are provided that indicate apnea and respiratory activity in the form of open collector digital outputs. These event signals may be accumulated by employing any of Columbus Instruments' Computer Counter Interface products.



High Sensitivity
Simple stand-alone operation with large display of respiration frequency in breaths per minute
Apnea sensing and alarm
Adaptable to animals of all sizes
Measures under continuous air flow

Monitoring Range: 20 to 720 breaths per minute
Sensitivity: Capable of monitoring a 20 gram mouse in a 3 liter chamber
Accuracy: 1%, ±1 digit; 60 to 600 breaths per Minute
Outputs: Analog pressure wave form and apnea alarm
Analog rate voltage: 10mv/bpm