Operator's Manual

1514
Job Menu
The JOB MENU is the heart of CAT85. Each job
has its own list of saved tests. After saving your
tests, view directly in the Job Link® mobile app
or send your report to a model CATPR wireless
thermal printer. SAVE AND EXIT when you’re
ready for your next job. Jobs are automatically
numbered sequentially. Open the JOB ARCHIVE
to view, continue, or delete jobs.
Combustion
By default, the COMBUSTION test starts automatically after
startup is complete. This test analyzes ue gas from various heating
equipment. Use this test to setup, test, and document equipment
performance.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Mount the CAT85 onto a secure, cool, magnetic surface near the
sampling point.
3. Twist probe cone lock into the ue port at the sampling point and
secure the probe. See “Common Sampling Points” section.
4. Select COMBUSTION from the JOB MENU.
5. Select the fuel and equipment type.
6. View live measurements.
For best results, test for at least 5 minutes near the center of the
ue, where you nd the highest level of CO.
7. SAVE ALL measurements displayed.
8. Remove the probe and cone from the ue when nished.
Be careful not to let the metal touch anything until it cools.
Reference Ranges
When selecting equipment, the reference range icon shows when
available. Temperature, O2, CO, and CO air free all have reference
ranges. These ranges show the generally accepted ranges for the
chosen equipment type. The arrow is GREEN if within the reference
range and YELLOW if not. These ranges are for reference only.
ZERO PROBE
ZERO PROBE sets the pressure sensor to 0 and resets the oxygen
zero point. Always remove the probe from the ue before using ZERO
PROBE. For the very best O2 measurements, start the pump and keep
the probe in ambient air for 2 minutes before using ZERO PROBE.
CO Sensor Overexposure
Do not power o if you see this warning. It appears if the CO sensor
detects a potentially damaging level of CO. Remove the probe from the
ue so fresh ambient air can pump through the device.
Trending
Use trending to check how combustion parameters change over
time. See “Settings” section for TRENDING SETUP.