Toray Oxygen Analyzers

March 2, 2017

High accuracy Oxygen Analyzers manufactured by Toray Engineering are an ideal means to monitor oxygen levels at very low analytical levels, thus providing the control required for high technology manufacturing environments.

Please use the chart below to help you choose the appropriate model.

Applications	Model	Description	Other options
Semiconductors, LCD, and electronic components	LC-450A	Capable of measurement in ppm; AC powered	Activated carbon filter Si filter Cotton filter
	LC-450D	Capable of measurement in ppm; DC powered	Activated carbon filter Si filter Cotton filter
	SD/LD-450	With vacuum chamber (for installation in systems)	AC power unit: DU-450
Baking furnaces, N2 reflow ovens, and dirty gas	RF-400	Baking furnaces with oxygen sensor protection; exclusively for reflow oven	Activated carbon filter Si filter Cotton filter
Baking furnaces, N2 reflow ovens, and dirty gas	LC-750H/PC-111	For high and medium concentration dirty gas, built-in gas suction pump
Gas plant, air separation	LC-750H	General type for high and medium concentrations
	LC-750H/PC-110	For clean gas of high and medium concentrations; built-in gas suction pump
	LC-750L	General type for low concentrations
	LC-750L/PC-120	For low-concentration clean gas, built-in gas suction pump
Vacuum deposition, sealed furnaces, and gloveboxes	SD/LD-450	Separate sensor and converter; thin, wall-mount converter	AC power unit：DU-450
Food packaging	LC-450F	For sampling after gas filling (sampling probe)	Activated carbon inlet Head space sampler
Food packaging	LC-750F	For sampling after gas filling (syringe)	Activated carbon inlet Head space sampler

RF-400 Compact Oxygen Analyzer

The RF-400 with a built-in gas suction pump in LC-750H PC-111 set model is best for high and medium concentration dirty gas measurement.

Download Product Datasheet

RF-400 Specifications

Measurement principle			Zirconia concentration cell type
Type			Desktop type/panel mounted type
Display system			4-digit digital display (concentration display)
Measurement range			0-1 / 10 / 100 / 1000 / 10000ppm(1) / 10 / 100vol%O₂　10^-20～10^-0atm Automatic range
Repeatability			Within ±1% of full scale; 1%≦ sample gas ≦100% Within ±2% of full scale; 10 ppm≦ sample gas ≦1% Concentrations under 10 ppm are out of warranty.
Sampling method			Continuous suction with built-in pump
Sample gas requirements	Pressure		Pressurization of 30 KPa or less
	Flow rate		1,000～2,000mL/min
	Humidity		Dew point below ambient temperature
	Temperature		0 to 50°C
	Others		Must not contain corrosive gas (fluorine gas, chlorine gas, sulfuric gas, etc.), gas containing organic silicone, flammable substances (including gas), oil or moisture
Reference gas			Atmosphere
Recorder output	Oxygen concentration output		4-20mA; insulated,load resistance of 550 Ω or less Recorder output range taken as full scale, and oxygen concentration given in linear output
Recorder output	Output range		0-100%, 0-10%, 10000ppm, 0-100ppm, 0　Automatic/fixed range
Transmission output			RS-232C (optional)
Alarm output	FAIL (device error)	1 point	Non-voltage contact; contact capacity: 30 V DC/AC or less, 0.5 A or less Contact point closes when device error occurs (contact point operation is adjustable)
	ALM (concentration alarm)	2 points (H/L)	Non-voltage contact; contact capacity: 30 V DC/AC or less, 0.5 A or less Contact point closes when alarm occurs (contact point operation is adjustable)
	RDY (warmup signal)	1 point	Non-voltage contact; contact capacity: 30 V DC/AC or less, 0.5 A or less Minimum open/close capacity of the non-voltage contact point is 12 V or higher; does not respond to extremely small loads
Warmup time			5 minutes or less
Dimensions	Body		210 mm (W) ×134 mm (H)×300 mm (D)(excluding projecting parts and filter)
Weight			Approx. 6.5 kg
Gas connection	INLET		Rc1/4
	BYPASS OUT		Rc1/4
	OUTLET		Rc1/4
Power			100 to 240 V AC±5%, 200 V A 50 Hz/60 Hz±2%

LC-450A Oxygen Analyzer

Type	Portable / Panel Mounted
Display system	Digital 4 Digits (Concentration Display)
Measurement range	0.1ppm?100vol%O2 Display: Auto range or 4 Ranges Recorder: 0-10/100/1000ppm/100% Available for any combination of the following ranges. 1/10/100/1000/10000ppm 1/10/100%, 10-20-10-0atm ? 1ppm range and atm range is the reference value (No guarantee)
Sampling system	Continuous Suction by Built-in Pump
Supply gas	Approx. 1.5L/min
Gas sensor	60±10mL/min
Gas connection	INLET(Sample gas inlet) Rc1/4 BYPASSOUT(Bypass outlet) Rc1/4 OUTLET(Sample gas outlet) Rc1/4
Recorder output	External output: DC 0-10 V DC 4-20 mA Range marker: BCD, 3 contact outputs (Contact capacity: DC 24 V, 0.3 A)
Reference Gas	Atmospheric Gas
Dimensions	210(W)×134(H)×300(D)
Weight	Approx. 6kg
Color	Mat Coating(Black)
Power supply	100 – 240VAC (35VA, Stationary time)

SD/LD-450 Oxygen Analyzer

High accuracy oxygen analyzers, specifically developed for the application of controlling and monitoring oxygen in the electronic industry. These analyzers enable the user to measure a wide range of oxygen from the ppb level up to 100% Volume Oxygen. The Toray oxygen analyzers are an ideal means to monitor Oxygen levels at very low levels, thus providing the control required for the safe and quality controlled manufacturing environment required in 3D Printing systems.

SD/LD-450 Product Datasheet

SD/LD-450 specifications

Measurement principle			Zirconia concentration cell type
Type			Separate-type (converter: wall-mounted; sensor: direct insertion type)
Display system			4-digit digital display (concentration display)
Measurement range			0-1 / 10 / 100 / 1000ppm / 1 / 10 / 100vol%O₂　10^-20～10^-0atm Automatic/fixed range
Repeatability			Within ±0.5% of full scale; range of 0-1% or more Within ±1% of full scale or ±1ppm, whichever is larger; range of less than 0-1% Concentrations in the 0-1 ppm, atm range are out of warranty.
Sample gas requirements	Pressure		10-3 to 200 KPa (absolute pressure)
	Flow rate		0.5 to 5,000 mL/min or 0 mL/min (measurement in state of natural dispersion)
	Humidity		Dew point below ambient temperature
	Temperature		0 to 100°C
	Others		Must not contain corrosive gas (fluorine gas, chlorine gas, sulfuric gas, etc.), gas containing organic silicone, flammable substances (including gas), oil or moisture
Reference gas			Atmosphere
Recorder output	Oxygen concentration output		4-20m (choice between this and transmission output) Insulated; load resistance of 550 Ω or less Recorder output range taken as full scale, and oxygen concentration given in linear output
Recorder output	Output range		0-100%, 0-1000ppm, 0-100ppm, 0-10ppm　Automatic/fixed range
Transmission output			RS-232C(choice between this and analog output)
Alarm output	FAIL (device error)	1 point	Non-voltage contact; contact capacity: 30 V DC/AC or less, 0.5 A or less Contact point closes when device error occurs (contact point operation is adjustable)
	ALM (concentration alarm)	4 points (HH/H/L/LL)	Non-voltage contact; contact capacity: 30 V DC/AC or less, 0.5 A or less Contact point closes when alarm occurs (contact point operation is adjustable)
	RDY (warmup signal)	1 point	Non-voltage contact; contact capacity: 30 V DC/AC or less, 0.5 A or less Minimum open/close capacity of the non-voltage contact point is 12 V or higher; does not respond to extremely small loads
	MRK (range marker) output	2 points	Non-voltage contact; contact capacity: 30 V DC/AC or less, 0.3 A or less
Warmup time			6 minutes or less
Dimensions	Converter		185 mm (W) ×155 mm (H)×40 mm (D)　 (excluding projecting parts)
	Sensor unit	SD3/8R	Overall length 100mm(sensor ⌀ 11×37,body ⌀ 40×48.5)
		SD16NW	Overall length 100mm(sensor ⌀ 11×39,body ⌀ 40×51)
		SD25NW	Overall length 100mm(sensor ⌀ 11×42,body ⌀ 40×48)
		SD40NW	Overall length 100mm(sensor ⌀ 11×41,body ⌀ 40×49)
Weight	Converter		Approx. 1.2 kg
Weight	Sensor unit		Approx. 0.5 kg
External connection			Vacuum flange (NW16, 25, or 40) or R3/8 screw
Power			24 V DC±10%, 60 V A (normal: 15 V A or less)

LC-750L/PC-120 Oxygen Analyzer for low concentration clean gas

Measurement principle	Zirconia concentration cell type
Type	Desktop type/panel mounted type
Display system	Digital 4-digit display or analog display
Measurement range	0-10/100/1000ppm/100%　 fixed range
Tolerance	Within ±2% of full scale; range of 0-2% or more Within ±3% of full scale; range of less than 0-2%
Sampling method	Continuous suction with built-in pump
Sample gas requirements	Pressure	Pressurization of 29.4 KPa or less
Flow rate	1,000～2,000mL/min
Humidity	Dew point below ambient temperature
Temperature	-10 to 100°C
Other	Must not contain corrosive gas (fluorine gas, chlorine gas, sulfuric gas, etc.), gas containing organic silicone, flammable substances (including gas), oil or moisture
Reference gas	Atmosphere
Recorder output	Oxygen concentration output	4-20 mA or 0-10 V 4-20 mA: load resistance of 600 Ω or less 0-10 V: load resistance of 100 Ω or more
Transmission output	None
Alarm output	ALM (concentration alarm)	2 points (H/L)	Non-voltage contact; contact capacity: AC 110, DC 24 V 3 A (resistance load)
Warmup time	20 minutes or less
Dimensions	Body	210 mm (W) ×300 mm (H)×327 mm (D) (excluding projecting parts)
Weight	Approx. 10 kg
Gas connection	INLET	Rc1/4
BYPASS OUT	Rc1/4
OUTLET	Rc1/4
Power	AC 100 V±10%, 200 VA 50 Hz/60 Hz

Measurement principles of zirconia oxygen analyzers

When zirconia ceramics which have undergone electrode machining on both sides are placed at high temperature, oxygen molecules on the electrode section of one side ionize, while oxygen molecules on the other electrode section are converted back into oxygen molecules. This property is called the ion conduction. The amount of the ion conduction increases as the difference in the oxygen concentration on the two sides of the zirconia ceramic increases. Electrons are passed between the two electrodes, and the amount of the ion conductance (that is, the difference in the oxygen concentration on the two sides of the zirconia ceramics) can be measured as the electromotive force between the two electrodes. As the following figure shows, this electromotive force produces a stable figure in accordance with the Nernst equation, so Toray’s zirconia sensors can measure oxygen concentration values reliably and stably.

Zirconia oxygen analyzers operate at high temperatures of roughly 700°C. Therefore, please be aware that the following situations may make measurement impossible or adversely affect sensor service life.

Oxygen analyzers cannot be used in explosion-proof zones because they contain electrical furnaces.
If flammable gas (e.g. hydrogen, methane, alcohol, or carbon monoxide) enters the oxygen analyzer, it will cause a combustion reaction and result in measurement error.
Organic silica (used for sealants, etc.) will cause sensor degradation. (This is one of the extremely common cause of sensor degradation.)
Halogens (especially chlorine) cause sensor failures.
If substances with high calorific value such as carbon monoxide intermittently enter the oxygen analyzer, the sensor will accumulate a heat history, and this will cause sensor malfunction.
If large amounts of corrosive gasses such as NOX or SOX enter the oxygen analyzer, they will cause sensor malfunction.
At high temperatures, Freon gas may cause a separation reaction, resulting in sensor degradation.
Water droplets, dust and mist will damage the sensor, shorten its service life, and cause errors. When measuring gasses containing them, remove them before supplying the gas into the oxygen analyzer

Toray Oxygen Analyzers

RF-400 Specifications

LC-450A Specifications

SD/LD-450 specifications

LC-750L/PC-120 specifications

Measurement principles of zirconia oxygen analyzers

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Toray Oxygen Analyzers

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RF-400 Specifications

LC-450A Specifications

SD/LD-450 specifications

LC-750L/PC-120 specifications

Measurement principles of zirconia oxygen analyzers

Recommended Readings

Gas Monitoring for Sterilization / Disinfection Processes

New E-STOP for Fixed Systems

Guardhat Adds Gas Monitoring from RKI Instruments to their Connected Worker Platform

Contact Us