Broken or Damaged Probe
If the sensor is broken or damaged, the probe and electronics must be returned to the
factory. A new sensor will be installed and calibrated. Refer to "Returning Your Meter"
on p. 93.
Flow Calibration and Calibration Validation
To ensure continued high accuracy of your Model F-5500 Flow Meter, ONICON Inc.
provides a full NIST traceable calibration. It is recommended that the meter's accuracy
be checked annually by performing the Zero CAL-CHECK
®
Calibration Validation test.
Fuse Replacement
WARNING!
Turn input power OFF before removing or installing a fuse. Use only
recommended fuse replacements.
Verify the fuse is defective by measuring it with an Ohm Meter (Two replacement fuses
are provided with each unit). Replacement fuse is Littelfuse part number 0454.750MR
To replace the fuse:
The fuse F1 is located near the power terminal block and can be removed by using
tweezers or needle-nose pliers.
Sensor Cleaning
The sensor is insensitive to small amounts of residue, but continued use in dirty
environments will necessitate periodic cleaning. To inspect the sensor, remove power
from electronics and remove the unit from the pipe or duct, exposing the sensor
elements. If they are visibly dirty, clean them with water or alcohol (ethanol) using an
appropriate brush until they appear clean again. Even though the sensor elements are
rugged, avoid touching them with any solid object and use a light touch while cleaning
them.
11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]
F-5500 Thermal Mass Flow Meter Manual 06/17 - 2030 / 107023
Page 79
Model F-5500
COMMUNICA
TIONS
Model F-5500
MAINTENANCE
Maintenance: General
Maintenance
