ZR22G, ZR402G Separate Type Zirconia Oxygen Analyzer

Models ZR22G,ZR402G
Separate Type Zirconia Oxygen Analyzer

Product Information

Zirconia Oxygen Analyzer ZR22G, ZR402G

Yokogawa’s zirconia oxygen analyzers are used for combustion monitoring and control in a wide variety of applications and help industries to make considerable achievements in energy saving. 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 ZR402G converter is equipped with an LCD touch screen which has various setting displays, a calibration display, oxygen concentration trend display, with easier operation and improvement of display functions. The converter is equipped with various standard functions such as measurement and calculation as well as maintenance functions including self-test. The ZR22G separate-type detector uses a high-reliability zirconia sensor, and its heater assembly can be replaced on site. The detector is mounted, for example, on the wall of a flue and can measure the gases directly.

		Bulletin for ZR22G, ZR402G
		General Specification for ZR22G, ZR402G
		User's Manual for ZR22G, ZR402G
		Selection Guide for Oxygen Analyzer

Click here to request a technical document for Zirconia Oxygen Analyzers

Features

*	The separate type converter ZR402G incorporates a LCD touch-screen for ease of operation.
*	The built-in heater assembly of the probe can be replaced on site, reducing maintenance costs.
*	The probe uses a long-life, high-reliability Zirconia sensor.
*	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
Oxygen concentration	0.01 to 100 vol% O₂
Output signal	4 to 20 mA DC, two points (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 550 Ω, depending on number of field devices connected to the loop (multi-drop mode)
Sample gas pressure	-5 to +250 kPa
Sample gas temperature	0 to 700℃ (Probe only) 700 to 1400℃ (with 0.15m probe and High Temperature Probe Adapter)
Probe length	0.15, 0.4, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0, 3.6,4.2, 4.8, 5.4 m
Contact output	Four points (one is fail-safe, normally open)
Contact input	Two points
Calibration	Method ; zero/span calibration Calibration mode ; automatic, semi-automatic and manual (All are operated interactively with an LCD touch screen)
Construction of detector	Non-explosion proof. Equivalent to NEMA4X/IP66
Construction of converter	Outdoor installation. Equivalent to NEMA4X/IP66
Ambient temperature	Probe: -20 to 150℃ Converter: -20 to 55℃
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