5 Functions
44
Rev. 06/2021
5.1.4
Failure Hour Counter
The failure hour counter of the NO
X
monitoring registers the hours that the nitrogen oxide daily
average has been above the configured level limit so far in a running calendar year. The detected
normal operation hours of a day are added to this failure hour counter if the final nitrogen oxide
daily average exceeds the configured level limit (also see section
Limit Monitoring
For this failure hour counter, you specify a time limit in the NO
X
monitoring that must not be ex-
ceeded and a warning threshold that indicates that the failure hour counter is approaching the
time limit.
You can configure the normal operation detection in the
NO
X
Setup
view (see section
Preferences
on page 112).
The change of day is firmly preset to 0:00 hrs Central European Time (CET) or UTC+1. At the be-
ginning of a new calendar year, the failure hour counter is automatically reset to
hours.
5.1.5
Exhaust Gas Temperature Monitoring
The exhaust gas temperature monitoring of the NO
X
monitoring is used for monitoring catalytic
converter operation and also as dew point detection for the NO
X
sensor (see section
Dew Point
Detection
on page 44), and it is designed for thermocouples of type K. For up to two measuring
points, you define a temperature threshold respectively, that must not be exceeded. If the ex-
haust gas temperature is to be monitored both before and after the catalytic converter, you can
also define the permissible temperature difference range of the exhaust gas between the cata-
lyst inlet and catalyst outlet.
You can configure the exhaust gas temperature monitoring in the
NO
X
Setup
view (see section
Preferences
on page 112).
5.1.6
Dew Point Detection
For the dew point detection of the NO
X
sensor, the temperature in the exhaust pipe at the cata-
lyst outlet is used, which is measured by the NO
X
monitor to monitor the exhaust gas tempera-
ture (see section
Exhaust Gas Temperature Monitoring
on page 44). The dew point detection
threshold is firmly predefined in the NO
X
monitor.
For engines with two catalytic converters in split exhaust gas lines, the exhaust gas temperature
at the catalyst outlet must be measured in both exhaust gas lines for NO
X
sensor dew point de-
tection.
The status of the dew point detection is displayed in the
NO
X
Monitoring
view of the EasyNO
ₓ
(see section
Overview
on page 101).
Summary of Contents for EasyNOx
Page 1: ...EasyNOX NOX Monitoring Operating Manual P N 01 50 026 EN Rev 06 2021 ...
Page 33: ...4 Product Description Rev 06 2021 33 4 1 7 Overview Drawings 4 1 7 1 Dimensions EasyNOX ...
Page 34: ...4 Product Description 34 Rev 06 2021 ...
Page 35: ...4 Product Description Rev 06 2021 35 CAN Bus NOX Sensor Module P N 63 05 015 ...
Page 36: ...4 Product Description 36 Rev 06 2021 I O Communication Module Optional ...
Page 142: ......