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Teledyne API N500 CAPS NO
X
Analyzer with NumaView™ Software
089770000 Rev 05
O
3
G
ENERATOR
O
VERRIDE
This feature in the Utilities>Diagnostics menu is used to manually turn the ozone
generator off and on. This should be done before disconnecting the generator, to prevent
ozone from leaking out, and after a system restart if the user does not want to wait the
30-minute warm-up time.
I
NTERNAL
S
PAN
G
AS
G
ENERATOR AND
V
ALVE
O
PTIONS
The zero/span valves and internal span gas generator options need to be enabled in the
software (contact the factory on how to do this).
The semi-permeable PTFE membrane of the permeation tube is severely affected by
humidity. Variations in humidity between day and night are usually enough to yield
highly variable output results. If the instrument is installed in an air-conditioned shelter,
the air is usually dry enough to produce good results. If the instrument is installed in an
environment with variable or high humidity, variations in the permeation tube output will
be significant. In this case, a dryer for the supply air is recommended (dewpoint should
be –20° C or less).
The permeation tube of the internal span gas generator option is heated with a
proportional heater circuit, and the temperature is maintained at 50°C ±1
°
C. Check the
IZS Temp in the Dashboard or the IZS Temp Raw signal in the
Utilities>Diagnostics>Analog Inputs menu. At 50° C, the temperature signal from the
IZS thermistor should be around 2500 mV.
RS-232
C
OMMUNICATIONS
Teledyne API's analyzers use the RS-232 communications protocol to allow the
instrument to be connected to a variety of computer-based equipment. Problems with
RS-232 connections usually center around such things as incorrect connector
configuration, incorrect software settings, improper/incomplete seating of the internal
cable. Do not do anything inside the instrument without first contacting Technical
Support (Section 5.9). For additional information, see Section 2.3.1.4 under “Serial
Summary of Contents for N500
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