aj-72659-72680 gas detectors aj-72659-72680 gas detectors , supply of items as per following specifications , portable co gas detector: with display: lcd display, continuous indication of concentration, peak, and twa & stel concentration, operating time, notice & alarm functions. co-h2 cp - range - 0 to 2000 ppm; resolution – 2 ppm. compensation at 1000 ppm of h2 display <=15 ppm. ingress protection: ip68. alarm: typical greater than 90 db. alarms set to twa and stel. electrochemical sensors should have internal pressure compensation within 700 mbar and 1300mbar ambient pressure to avoid electrolyte leakages. approvals csa, iecex, ce. atex approval for use in zone 0.battery: lithium thionyl chloride battery (li-socl2, non-rechargeable, 3.6v) item code- 300125341 , oxygen single gas detector with continuous real time gas concentration lcd display with back light, detection range 0-30 % volume, low (19.5 % volume) & high (22.5% volume) alarms, alarm 90 db at 30 cm, ip 65 or higher housing intrinsically safe, certification atex ii1g, ex ia ii c gat4 or equivalent, atex directive: 94/9/ec or equivalent emc/ r&tte directive compliant, operating temperature range -20 to +50 deg. c, continuous data logging with user. configurable data logging interval, clip to attach to personnel, rechargeable battery with charging adopter, pc communication setup, pc software and calibration adapters item code- 300141042 => limited