ZR202G Integrated Type Zirconia Oxygen Analyzer

Model ZR202G
Integrated Type Zirconia Oxygen Analyzer

Product Information

Integrated type Zirconia Oxygen Analyzer ZR202G

Yokogawa’s zirconia oxygen analyzers are used for combustion monitoring and control in a wide variety of applications and help industries to save energy. The applications range from energy-consuming industries such as iron and steel, electric power, oil and petrochemical, ceramics, pulp and paper, food, and textiles, to various combustion facilities such as incinerators and small- and medium-sized boilers. Combustion monitoring and control using the analyzer also contribute to a lowering of CO₂, SOx, and NOx emissions by allowing for more complete combustion, thus preventing global warming and air pollution.

The ZR202G Integrated type Zirconia Oxygen Analyzer integrates a probe and a converter, and does not require any sampling system. The probe can be inserted directly into a stack or furnace to measure the oxygen concentration of the stack gas with a temperature up to 700 degree C. The probe uses a highly reliable zirconia sensor and a field-replaceable heater assembly. The analyzer features infrared switches, allowing the user to operate the instrument without opening the cover in the field. An automatic calibration unit is available for fully automated calibration.

The ZR202G is ideal for monitoring the oxygen concentration or achieving low oxygen combustion in large- or small-sized boilers, various industrial furnaces, and combustion equipment.

		Bulletin for ZR202G
		General Specification for ZR202G
		User's Manual for ZR202G
		Selection Guide for Oxygen Analyzer

Features

*	Reduces installation costs
*	Infrared switch operation
*	Zirconia sensor and heater assembly can be replaced in the field
*	Can measure either oxygen concentration or humidity
*	Remote maintenance using digital communications (HART) reduces maintenance costs.
	Note: HART is a registered trademark of HART Communication Foundation.

Specifications

Measurement object	Oxygen concentration in combustion exhaust gas and mixed gas.
Measurement system	Zirconia system
Display	6-digit LCD
Switch	Three optical switch
Oxygen concentration	0.01 to 100 vol% O₂
Output signal	4 to 20 mA DC, one point(maximum load resistance 550Ω)
Measurement range	Any setting in the range of 0 - 5 vol%O₂ to 0 - 100 vol%O₂ (in 1 vol% O₂), or partial range.
Digital communication (HART)	250 to 550Ω, depending on number of field devices connected to the loop (multi-drop mode).
Sample gas pressure	-5 to + 50 kPa
Sample gas temperature	0 to 700℃ (Probe only)
Probe length	0.4, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0 m
Contact output	Two points, contact capacity 30 V DC 3 A, 250 V AC 3 A (resistive load)
Contact input	Two points
Calibration	Method; zero/span calibration Calibration mode; automatic, semi-automatic and manual (with optical switch)
Construction	Non-explosion proof. Equivalent to NEMA4X/IP66
Ambient temperature	-20 to 55℃ (-5 to 70℃ on the case surface)
Power supply	85 to 264 V AC; 45 to 66 Hz

Performance

Repeatability	±0.5% Maximum value of set range
Linearity	±1% Maximum value of set range
Drift	±2% Maximum value of set range/month
Response time	90% response within 5 sec