Oldham ctx 300 - CTX 300 calibration (for Semiconductor)

5 – Maintenance
27
CTX 300 calibration (for Semiconductor)
This is a Semiconductor type sensor.
■ Flip the switch (rep. 1) into the CAL
position.
Figure 29
■ Ensure that the sensor is in clean air,
otherwise inject synthetic air into it
using the calibration kit and referring
to the recommendations below.
Important: to correctly calibrate a
sensor equipped with a semi-
conductor cell, use of a humidifier kit
(code 6335919) is MANDATORY.
Using the humidifier kit
- Lift the lid (ref. A) and, using a
washbottle, moisten the filter,
without saturating it, with distilled
water
- Replace the lid and check that all
parts are properly assembled and
that the assembly is fully airtight.
- Adjust the flow rate to 60 l/h and
wait 10 minutes until the humidifier
is fully purged.
- Apply the gas introduction pipe
(ref. C) to the nose of the sensor
and wait at least five minutes for
the measurement to stabilize.
Note: the sensor must be powered
for at least two hours before any
adjustment can be made.
Figure 30: the humidifier kit.
(B) Filter
(A) Lid
(C) Gas input
pipe
(D) « Cristal » tubes.
Length: 0.5 m
To detector
To standard gas
cylinder
(gas input)