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Auto calibration cycle setting:
Auto calibration cycle is set.
Setting is variable within 1 to 99 hours
(in increments of 1 hour) or 1 to 40 days
(in increments of 1 day).
in auto calibration is set.
Settable within 60 to 900 seconds (in
increments of 1 second)
Auto calibration remote start
Auto calibration starts by opening the
auto calibration remote start input terminal
after short circuiting for 1.5 sec or longer.
Auto calibration starts when contacts
open.
Auto zero calibration
:
(*1)
Auto zero calibration is carried out peri-
odically at the preset cycle.
This cycle is independent from "Auto
calibration" cycle.
When zero calibration gas and solenoid
valve for opening/closing the calibration
the customer, zero calibration will be car-
ried out at the set auto zero calibration
timing.
Auto zero calibration cycle setting:
Auto zero calibration cycle is set.
Setting is variable within 1 to 99 hours
(in increments of 1 hour) or 1 to 40 days
(in increments of 1 day)
zero calibration is set.
Settable within 60 to 900 seconds (in
increments of 1 second)
High/low limit alarm
(*1)
:
Alarm contact output turns on when
measurement value reaches the preset
high or low limit alarm value.
Contacts close when the instantaneous
value of each channel exceeds the high
alarm limit value or falls below the low
alarm limit value. (max. 5 (for Horizontal
type) or 6 (for Vertical type) alarms are
settable)
Instrument error contact output
Contacts conductive at occurrence of
analyzer error No. 1, 2, 3 or 10.
Calibration error contact output
Contacts conductive at occurrence of
manual or auto calibration error (any of
errors No. 4 to 9).
Auto calibration status contact outputs
Contacts conductive during auto calibra-
tion.
O
correction:
Correction of measured NO, SO
2
CO gas concentrations into values at
reference O
:
(*1)
:
(*1)
:
(*1)
:
(*1)
and
2
concentration.
2
Correction formula:
C =
C : Sample gas concentration after O
correction
C
: Measured concentration of sample
S
gas
O
: Measured O
S
setting: 1 to 20% O
O
: Reference O
n
(value changeable by setting.0 to
19% O
Average value after O
2
calculation:
The result of O
taneous O
average value over the preset period of
time.
Moving average method is used. Sampling
interval is 30 seconds.
(Output is updated every 30 seconds.
Update is the averaged value of the most
recent elapsed averaging time period.)
Averaging time period 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 input
terminals after short circuiting for 1.5 sec
or longer.
Output is reset by input voltage and
restarted by opening the terminal circuit.
Communication function:
RS-485 (9pins D-sub connector)
Half-duplex bit serial
Start-stop synchronization
Modbus RTU™ protocol
Contents : Read/Write parameters
Remark
Atmospheric pressure correction:
Measure atmospheric pressure and cal-
culate compensation (for use, be sure to
relieve the exhaust gas from analyzer to
the atmosphere)
After atmospheric pressure correction;
Span point: The change is 0.5% mea-
Correction range: 700hPa-1050hPa
And refer to section "3.4.4. Purging of
instrument inside".
*1 Standard function for Vertical type.
86
21-On
× Cs
21-Os
concentration (Limit
2
)
2
concentration
2
)
2
correction and O
average value
2
correction or instan-
2
value can be output as an
2
Read measurement concen-
tration and instrument status
: When connecting via RS-
232C interface, an RS-232C
be used.
sured value or less relating
to the change of the atmo-
spheric pressure 1%.
INZ-TN2ZPG-E
2
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