Michell Instruments XZR200 Oxygen Analyzer

Cost-effective zirconium-dioxide oxygen analyzer for combustion, ambient-air, and confined-space monitoring — configurable 0–25% or 0–100% O₂ with 4–20 mA and 0–10 V or RS232.

Key advantages

0–25% or 0–100% O₂ — accuracy <0.5% O₂ (0–25%) / <1% O₂ (0–100%); T90 <5 s; repeatability <0.5%.
Flexible outputs — 4–20 mA and 0–10 V, or RS232 (not with 4–20 mA selected).
IP65 die-cast housing — stainless probe 210 or 400 mm; sample to +400 °C.
Air calibration — calibrate in normal air (20.7% O₂) or any known O₂; manual or externally triggered automatic calibration.

Typical applications

Combustion control on oil/gas/biomass boilers.
Laboratory and building air-quality / confined-space monitoring.
Composting and other atmospheric O₂ checks in air/N₂/CO₂/Ar/combustion backgrounds.

Selection guide

Range — 0–25% or 0–100% O₂.
Probe — 210 mm or 400 mm; ø12 mm; 12 mm Swagelok-class compression fitting.
Power — 24 V DC ±10%; 500 mA max.
Outputs — 4–20 mA + 0–10 V, or RS232; 3.3 V logic diagnostic cycling output.
Sample — Atmospheric design (up to ~3 barg possible with caveats); flow 0…10 m/s; tip gets hot — do not touch.
Ambient — −10…+85 °C; weight <0.5 kg; warm-up ~10 min.

Common mistakes

Selecting RS232 and 4–20 mA together — datasheet notes they are mutually exclusive configurations.
Ignoring hot probe tip hazards and sample temperature limits (+400 °C).
Operating far off atmospheric pressure without calibration at operating pressure.
Analytical / water quality

When to RFQ / what to tell us

0–25% vs 0–100%; probe length 210/400 mm.
Output preference (4–20 mA/0–10 V vs RS232).
Sample gas/temperature/pressure; quantity; ship-to.

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Specs

Spec	Value
SKU	41398
Brand	Michell Instruments
Model	XZR200
Product type	zirconium dioxide oxygen analyzer
Measuring range	0–25% or 0–100% O₂
Accuracy	<0.5% O₂ (0–25%); <1% O₂ (0–100%); repeatability <0.5%
Output signal	4–20 mA and 0–10 V DC, or RS232
Supply voltage	24 V DC ±10%, 500 mA max
IP rating	IP65
Sample temperature	Up to +400 °C
Notes	Values from Michell/PST XZR200 US Datasheet V4.2.

Documents

XZR200 datasheet (PDF)

FAQ

Q: Which probe length? A: 210 mm or 400 mm — match insertion depth and process connection (12 mm compression).

Q: What should I send for a quote? A: Range, probe, outputs, sample conditions, quantity. Compatible with systems using Michell XZR200 if you need a drop-in check — we do not claim authorized-dealer status.