With a built-in early warning system, the XZR200 oxygen analyzer alerts operators to faults within the unit. A 3.3-V DC logic output acts as a “heartbeat” that enables operators to check the health of the sensor. This health monitor prevents false oxygen measurements from causing loss of product or poor combustion, higher fuel costs and penalties. The analyzer reportedly measures percent oxygen to better than 1% of span (or 0.5% O2) with ranges of 0–25% and 0–100% available. Easy to install, it offers four configuration options, with two choices of probe length and two temperature ranges.