Cleaning The Sensor Module; Inserting A Cleaned Or New Sensor Module - TESTO 380 Instruction Manual

7 Maintaining the product
7.9.2.

Cleaning the sensor module

1 Sensor module
2 Runner
3 Sensor contacts
1. Carefully wipe the sensor module (1) and runner (2) with a dry
cotton bud, applying only slight pressure. Do not touch the
sensor contacts (3). If particles of dirt cannot be removed, the
sensor module can be cleaned using a cotton bud moistened
with distilled water.
Particle residues may be visible in the form of a ring in the
centre of the sensor module or a change of colour. It is not
necessary to remove the remaining particle residues by
increased pressure on the sensor module (risk of damage!),
as the measurement system is recalibrated prior to every
measurement.
> Wipe between the sensor contacts, from one to another (3).
2. Rub the sensor module dry with an unused cotton bud.
7.9.3.

Inserting a cleaned or new sensor module

1. Insert sensor module (observe markings)
2. Put the top part of the particulate matter sensor on and tighten
(clockwise).
3. Attach the tube to the top part of the particulate matter sensor.
4. Attach the preheating section and lock (clockwise).
5. Attach the measurement gas tube.
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