E8500 Instruction & Operations Manual
version 1.017
Page 7 of 49
Zero All Sensors
. Press
OK
. The display will automatically switch to the
MEASURE
mode and the last line will execute a countdown. At the end of the
countdown you are ready to use the instrument.
3. If, at the end of the autozero countdown, the display shows an error message for
a particular sensor, see the troubleshooting table in section D of this chapter. The
instrument will measure correctly all sensors that do not show an error message.
4. With the analyzer in its case, connect the probe to the unit. One hose with the
quick disconnect fitting connects to the “Sample In” port, and the other hose
connects to the “
+
” pressure port. The thermocouple connector plugs into the
“Stack” temperature connector. For the most accurate draft measurements,
another autozero calibration should be done (through the CALIBRATION button
menu) after the probe & hoses are fully connected to the analyzer but before the
probe is inserted into the stack.
5. The instrument can have up to six electrochemical gas sensors, one PID sensor,
and three infrared (NDIR) gas sensors. The E8500 Plus has three temperature
sensors total.
6. All sensor readings are single range readings with ranges listed in Appendix A.
The CO reading is an exception. If the CO concentration exceeds the “Dilute CO”
threshold that can be adjusted in the SETUP menu, a CO dilution takes place
automatically to increase the CO dilution measurement range to as high as
20,000 ppm. If the measured CO concentration exceeds the upper end of the set
dilution range, then a CO purge mode is initiated. If any of the ranges are
exceeded for the other sensors the corresponding parameter will read OVER on
the display. In that case, it is strongly recommended to withdraw the probe from
the stack immediately and let the analyzer run with the pump on in a clean air
environment to prevent sensor saturation.
NOTE:
For CO measurements greater than 20,000 ppm, the optional
CO NDIR sensor can measure up to 15% CO.
C.
SAFETY GUIDELINES & ADVICE
Most stack gases are hot, full of moisture, corrosive, and laden with soot particles.
To make sure that your instrument will give you a long time of trouble-free performance,
please observe the following recommendations.
1. Follow the instructions in the E8500 Plus manual.
2. Never use the instrument without the disposable fiber soot line filter or the
condensation disk filter, which are located inside the analyzer. Operating the
