EDS3-115C Datasheet, PDF (1/4 Pages) Fuji Electric – PARAMAGNETIC OXYGEN ANALYZER

PARAMAGNETIC OXYGEN ANALYZER
DATA SHEET
ZAJ
This product is an analyzer which measures oxygen con-
centration in a sample gas by converting it into pressure,
utilizing the magnetic property of oxygen.
When compared with the oxygen analyzers of other
measuring systems, this oxygen analyzer features a faster
response, and smaller influence by coexisting gas and com-
bustible gas, etc.
Further, this analyzer is easy to use because of abundant
functions such as discretionary range setting and interac-
tive operation. It is usable in diverse field including control
of various heat treating furnaces, combustion furnaces and
other various fields.
FEATURES
1. Because of a pressure detection type, response is quick.
90% response can be reached within 2sec.
2. Measuring range can be set in any range of 0 to 2 ...
100%O₂
3. Combustible gases do not affect measurements.
4. Measurements are scarcely affected by coexisting gases
(H₂, CO₂ etc).
5. Suppression range is possible (for example, 21 to 100%,
100 to 95%O₂ etc).
6. Interactive operation is possible by using liquid crystal
display.
7. Parts which are brought in contact with gases are made
of anticorrosive materials such as stainless steel and te-
flon.
SPECIFICATIONS
Measuring range: 1)
2)
3)
Numbers of range:
When reference gas is N₂,
0 to 2 ^... 0 to100%O
2
(freely settable in 1%O₂ steps)
When reference gas is air,
21 to 23 ^... 21 to 100%O or
2
21 to 19 ^... 0%O₂
(freely settable in 1%O₂ steps)
When reference gas is 100%O ,
2
100 to 98 ^... 100 to 0%O₂
(freely settable in 1%O₂ steps)
2 ranges
Measuring system:
Paramagnetic pressure type
Output signal: 4 to 20mA DC
(load 550Ω max.)
0 to 1V DC
Repeatability: Within ± 0.5% of full scale
(in 10% or higher ranges)
Within ± 1% of full scale
(in ranges below 10%)
Zero drift:
Within ± 1% of full scale/week
(in 10% or higher ranges)
Within ± 1.5% of full scale/week
(in ranges below 10%)
Span drift:
Within ± 2% of full scale/week
Flow rate of sample gas:
0.5L/min. or 1L/min
Response time (90% response: *Indication start-up time):
2sec or less (sample gas flow rate 1L/
min, range width 5%O₂ or more)
3sec or less (sample gas flow rate 1L/
min, range width less than 5%O₂)
3sec or less (sample gas flow rate 0.5L/
min)
*The time (= 1sec.) required for gas re-
placement in the internal piping is not
included.
Linearity:
Within ± 2% of full scale
Compositional variations:
0.04%O or 1% of full scale, or which-
2
ever is larger.
Sample gas temperature:
0 to 40˚C
Pressure loss: Approx. 1.3kPa {about 130mmH₂O}(at
sample gas flow rate 0.5L/min)
Approx. 2.8kPa {about 280mmH O}(at
2
sample gas flow rate 1L/min)
Reference gas: N₂, O₂ gas or air
Reference gas pressure:
100kPa (range width: 10%O₂ or more)
Specified pressure: 50 to 150kPa (range
width: less than 10%O )
2
*Specified pressure is marked at the ref-
erence gas inlet.
*Reference gas is supplied at the above
pressure to allow for flow rates of 5 to
20mL/min.
Purging gas (dry air or N ) flow rate:
2
1L/min
(flowed for purging corrosive ambient
gas)
Gas inlet/outlet dimensions:
Rc1/4 (PT1/4 female screw) or NPT1/4
EDS3-115c
Date Apr. 1, 2011