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Standard Functions
Output signal holding:
to the value right before the calibration is started or the
be held.
Range changeover:
range to the 1st range.
voltage (the remote range changeover sig-
nal) is applied on the contact dedicated for
each component, the 1st range is effective.
becomes effective.
Remote output holding:
voltage is applied. Values indicated on LCD are not held.
Auto calibration:
1 hour to 99 hours (in increments of 1 hour) or
60 seconds to 900 seconds (in increments of 1 second)
Auto calibration remote start:
longer on the auto calibration remote start contact and
then open the contact, one-time auto calibration starts.
time setting" for Auto calibration (see the previous item).
Auto zero calibration:
calibration and a solenoid valve for opening/closing the
calibration and that for the auto calibration can be different.
1 hour to 99 hours (in increments of 1 hour) or
60 seconds to 900 seconds (in increments of 1 second)
Upper/lower limit alarm:
are available.
Instrument error contact output:
The contact is closed if a device error occurs.
Calibration error contact output:
The contact is closed if a calibration error occurs.
Auto calibration status contact output:
The contact is closed during auto calibration.
Pump ON/OFF contact output:
This contact is closed during measurement, and opened
is stopped during calibration.
Optional Functions
O
correction:
2
Conversion of measured NO, CO, and SO
tions into values at reference O
21 – On
C =
21 – Os
2
2
* The upper limit value of the fractional part in this
calculation is 4. The result of calculation is indicated
and transmitted as an analog output signal.
Average value after O
2
calculation:
and calculate the moving average of instantaneous con-
centration after O
correction or instantaneous O
2
minute increment) or 1–4 hour (in one hour increment).
30 seconds.
CO concentration peak count alarm:
(available only for CO/O
number of times.
Communication function:
RS-232C (9-pin D-sub)
Half-duplex bit serial
Modbus™ protocol
tions and instrument status
RS232-RS485 converter.
74
gas concentra-
2
concentration
2
correction
2
concentration
concentration
correction and O
average value
2
measurement)
2
INZ-TN2ZPAJ-E
value
2
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