73
INZ-TN2ZRE-E
o
2
correction:
Correction of measured NO, SO
2
and
CO gas concentrations into values at
reference O
2
concentration
Correction formula:
C = –––––––– x Cs
C : Sample gas concentration after O
2
correction
C
S
: Measured concentration of sample
gas
O
S
: Measured O
2
concentration (Limit
setting: 1 to 20% O
2
)
O
V
: Reference O
2
concentration
(value changeable by setting.0 to
19% O
2
)
Average value after o
2
correction and o
2
average value
calculation:
The result of O
2
correction or instanta-
neous O
2
value can be outputted as an
average value in the preset period of
time.
Used for averaging is the moving average
method in which sampling is carried out
at intervals of 30 seconds.
(Output is updated every 30 seconds. It
is the average value in the determined
period of time just before the latest updat-
ing.)
Averaging time is settable within 1 to 59
minutes (in increments of 1 minute) or 1
to 4 hours (in increments of 1 hour).
Average value resetting:
The above-mentioned output of average
value is started from the initial state by
opening the average value resetting in-
put terminals after input voltage for 1.5
seconds or longer.
Output is reset by input voltage and
restarted by opening
Communication function:
RS-485 (9pins D-sub) or USB (Type-B)
Half-duplex bit serial
Start-stop synchronization
ModbusTM protocol
Contents : Read/Write parameters
Read measurement con-
centration and instrument
status
Remark : When connecting via RS-
232C interface, an RS-232C
↔
RS-485 converter should
be used.
4. Performance
Repeatability:
±0.5% of full scale
Linearity:
±1% of full scale
Zero drift:
±2% of full scale/week
In the case of auto zero calibration use
for 500ppm or less range
span drift:
±2% of full scale/week
Response time (for 90% Fs response) :
1 to 15 sec electrical response
Within 60 seconds including replacement
time of sampling gas (when gas flow rate
is 0.5L/min)
Gas replacement time depends on the
number of measuring components,and
measuring range.
interference from other gases:
Interference
component
CO
2
analyzer
SO
2
analyzer
CH
4
analyzer
CO
analyzer
CO
1000ppm
CO
2
15%
H
2
O
saturation
at 20°C
H
2
O
saturation
at 2°C
CH
4
1000ppm
––
––
––
––
––
––
≤
1%FS
≤
1%FS
≤
1%FS
for 500ppm
analyzer,
≤
2.5%FS
≤
2.5%FS
for 200ppm
analyzer
≤
2%FS
≤
1%FS
≤
1%FS
for 200ppm
analyzer,
≤
2.5%FS
≤
1%FS
≤
1%FS
≤
1%FS
≤
1%FS
NO
analyzer
––
––
≤
2%FS
≤
1%FS
≤
1%FS
≤
50ppm
≤
1%FS
≤
2%FS
5. EC Directive Compliance
The product conforms to the requirements of the Low Volt-
age Directive 2006/95/EC and EMC directive 89/336/EEC
(as amended by Directive 92/31/EEC), both as amended
by Directive 93/68/EEC.
It conforms to following standards for product safety and
electromagnetic compatibility ;
EN61010-1 : 2001
Safety requirements for electrical
equipment for measurement, control and
laboratory use.
“Installation Category II”
“Pollution Degree 2”
EN61326-1 : 1997, AI: 1998, A2: 2001, A3: 2003
Electrical equipment for measurement,
control and laboratory use — EMC re-
quirements.
21-On
21-Os