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➢
Press
OK
.
➢
Enter the activation code (see page 8).
➢
Press
OK
.
➢
Press
Up
key to go to folder
“F 500”
.
➢
Press
OK
.
➢
Press
Up
key to go to folder
“F 510”
.
➢
Press
OK
.
The duration between two auto-zeros is displayed.
➢
Set it with
Up
and
Down
keys.
This time-delay must be between 0 (no auto-zero) and 60 minutes.
➢
Press
OK
to validate the duration.
8.4. Air velocity measurement integration (CTV210-R)
This function is available on CTV210-R transmitters only.
The air velocity measurement element of the class 210 is very sensitive and reacts to air velocity changes. When making
measurements in unstable air systems, the air velocity measurement may fluctuate. The integration coefficient (from 0 to 9)
makes an average of the measurement; this helps to avoid any excessive variations and guarantees a stable measurement.
New displayed value =
[((10 - Coef.) x New value) + (Coef. x Old value)] /10
Example: CTV210-R with hot wire (0-30 m/s) – Current measurement: 2 m/s – New measurement: 8 m/s
The air velocity source being unstable, the user selects a strong integration. Integration: 7. The variation is lower than
10 m/s, it is possible to apply the integration calculation formula.
Next displayed value:
((2 * 8) + (7 * 2))/10 = 3 m/s.
The transmitter is powered on.
➢
Press
OK
.
➢
Enter the activation code (see page 8).
➢
Press
OK
.
➢
Press
Up
key to go to folder
“F 501”
.
➢
Press
OK
.
➢
Set the integration value with
Up
and
Down
keys.
This value must be between 0 and 9 with:
•
Coefficient 0:
no integration, important fluctuation of the displayed value.
•
Coefficient 9:
maximum integration, more stable measurement display.
8.5. Add an offset
The transmitter is powered on.
➢
Press
OK
.
➢
Enter the activation code (see page 8).
➢
Press
OK
.
➢
Press
Up
key to go to folder
“F 500”
.
➢
Press
OK
.
“F 521”
blinks, corresponding to the setting folder for the main parameter.
➢
Press
OK
.
The first number of the offset blinks.
➢
Enter with
Up
and
Down
keys the number value or the negative sign of the value then press
OK
.
The second number blinks.
➢
Enter with
Up
and
Down
keys its value then press
OK
.
➢
Repeat the procedure for the following numbers.
➢
Press
OK
when the last number is set.
“F 521”
blinks, the offset for the main parameter is configured.
F 500: MEASUREMENT SETTINGS
19