9 - 3
INZ-TN2ZKJ-E
Average value resetting:
The above-mentioned output of average value is started
from the initial state by applying a no-voltage rectangular
wave to the average value resetting input terminals
(opened after short-circuiting for 1.5 seconds or longer).
Output is reset by short-circuiting and restarted by opening.
Pump ON/OFF contact output:
During measurement, this contact closes. While calibration
gas is flowing, this contact opens. This contact is con-
nected in power supply of pump, and stop the sample gas
while calibration gas flowing.
Communication function:
RS-232C (9pins D-sub)
Half-duplex bit serial
Start-stop synchronization
Modbus
TM
protocol
Contents:
Read/Write parameters
Read measurement concentration and instrument
status
Remark:
When connecting via RS-485 interface,
an RS-232
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
Span drift:
±
2% of full scale/week
Response time (for 90% FS response) :
Within 60 seconds including replacement
time of sample gas (when gas flow rate is
0.5L / min).
5.
Standard Requirements for Sample Gas
Flow rate:
0.5L / min
±
0.2L / min
Temperature:
0 to 50˚C
Pressure:
10 kPa or less (Gas outlet side should be
open to the atmospheric air.)
Dust:
100
µ
g/Nm
3
in particle size of 1
µ
m or
less
Mist:
Unallowable
Moisture:
Below a level where saturation occurs at
2˚C (condensation unallowable).
Corrosive component:
HCl 1 ppm or less
Standard gas for calibration:
Zero gas;
Dry N
2
Span gas; Each sample gas having
concentration 90 to 100% of
its measuring range (recom
mended).
In case a zirconia O
2
analyzer is installed
externally and calibration is carried out on
the same calibration gas line:
Zero gas;
Dry air or atmospheric air
(provided without CO
2
sensor)
Span gas; For other than O
2
measure
ment, each sample gas having
concentration 90 to 100% of
its measuring range.
For O
2
measurement, O
2
gas of 1 to 2 vol%.
6. Installation Requirements
• Select a place where the equipment does not receive
direct sunshine, draft/rain or radiation from hot sub-
stances.
If such a place cannot be found, a roof or cover should
be prepared for protection.
• Avoid a place where receives heavy vibration.
• Select a place where atmospheric air is clean.
