The ARA single gas detection series is a cost-effective, personal detector with 24 months of continuous operation. This wearable gas detector has only one button to make sure it is simple while alerting workers when health levels exceed set safety levels. The instrument has a self-test feature to test audio, visual, and vibrating alarms to give users confidence before each use.


This series gives out live readings and event logging and downloading to maintain all data information and employee safety onsite. Its instantaneous alarms, adjustable high/low alarms, and calibration and bump test reminders allow for easy maintenance and ultimate safety. The ARA gas detection series also features a lifetime remaining countdown to assist users plan for future projects and site shutdowns. Wearers of the device can also display data as live readings or lifetime remaining.


The sensor for the device is a single plug-in electrochemical cell and ingress protection (IP67). The instrument is light-weight at only 3.2 oz and features a liquid crystal display (LCD). The three alarms are audio (95dB at 10 cm), visual LED, and vibrating (operates at ± 10 °C.


There are four types of gases this series is able to detect: H2S, O2, CO, and SO2. For H2S and CO ARA users, there is an option to purchase our hibernation alternative. This option gives users the same capabilities as the original ARA device but features hibernation mode to extend the life of the device up to 36 months. ARA IR link* allows customers to download 30 recent event logs and configure settings including user ID, low/high alarms, self-test intervals, and bump test intervals.


The detection range for each gas is as follows:

H2S: 0 to 100 ppm

CO: 0 to 300 ppm

SO2: 0 to 50 ppm

O2: 0 to 25 %


The operating temperature for H2S, CO, and SO2 is -40 to 60 °C while the operating temperature for O2 is – 30 to 60 °C. Humidity resistance for all gas types is 5-95% RH. Applications featuring this gas detection series include sitewide safety, confined space entry, plant shutdown processes, and first response safety.


ION Science is a leading gas detection and prevention company offering a variety of solutions across a vast amount of applications. To find out more about products offered from ION Science for gas and leak detection, view our products page. For more information about the ARA personal gas detection series or if you have a question for us, contact ION Science today.

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