デジタル酸素濃度計　XO-326IIs

The COSMOS Digital Oxygen Meter Mini-Check XO-326IIs is a highly reliable and intrinsically safe (Ex ia IIC T3X) portable oxygen concentration meter designed for real-time monitoring and pre-work safety checks in confined spaces like manholes and tanks, where oxygen deficiency is a concern. It boasts an impressive continuous operation time of approximately 15,000 hours on just two AA alkaline batteries, significantly reducing battery replacement frequency. Key features include an automatic air adjustment function that calibrates to 21.0 vol% upon power-on, clear audible and visual alarms with LCD backlight for enhanced safety, and a large, easy-to-read LCD display. The device utilizes a diaphragm galvanic cell type sensor for oxygen detection via diffusion, with a measurement range of 0-25.0 vol% (service range 25.1-40.0 vol%) and an accuracy within ±0.5 vol%. Alarm set points are at 19.5 vol% (1st stage) and 18.0 vol% (2nd stage), with a 90% response time within 20 seconds. Users can choose from 1m, 5m, or 10m cable lengths, and the sensor is user-replaceable, contributing to lower running costs. It complies with JIS T 8201:2010 for oxygen deficiency meters and holds NK type approval.