TSI Instruments 4043 - 4 Maintenance; Flow Sensor; Re-Certification; Cases

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Chapter 4
Maintenance
Flow Sensor
Periodically inspect the flow sensor by looking into the outlet of the
flowmeter. Remove dust, particles and fibers from the sensor, with
clean, dry compressed air. The flow sensor will break if touched.
Never run liquids through the flowmeter and never touch the
sensor with a brush. Dust or other deposits on the flow sensor will
degrade the 4040/4043/4045 flowmeter’s flow accuracy.
Caution
The flowmeter must be switched off for cleaning.
Only use clean, dry, compressed air when
attempting to remove contamination from the
sensor.
Re-certification
To maintain a high degree of confidence in the measurements made
by the Models 4040/4043/4045, TSI recommends that you return the
instrument to TSI every 12 months for re-certification. For a nominal
fee, we will recalibrate the unit and return it to you with a certificate of
calibration and US National Institute of Standards Technology (NIST)
traceability. This “annual checkup” assures you of consistently
accurate readings; it is especially important in applications where
strict calibration records must be maintained.
Cases
If the instrument case or storage case needs cleaning, wipe it off with
a soft cloth dipped in isopropyl alcohol or mild detergent. Never
submerge the flowmeter.
Storage
When storing the flowmeter, always cover the ends of flow tubes with
the provided caps to prevent dust or other foreign matter from
entering the tube.
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