Technical Guide
CN-IC1-12
Title
:
i-Controller Visograph Navigation REV.201.05
EXTERNAL
23
1-5JULY2021
Sensor Offsets
Sensor Offsets are used to calibrate devices for their
unique environment. Each sensor reading can be
adjusted (+/-) a small amount to refine the sensor
reading. The default Offset is 0.0. When an Offset is used,
the Sensor Reading value will include the Offset amount.
NOTE: The order of pages may vary based on number of
sensors and options present.
Sensor offsets are available for all
Flō
unit sensors. Sensor
offsets are to be set when an installed sensor is reading
differently from a calibrated device.
Maximum offset
values for each sensor type are as follows:
Temperature Sensors: +/- 3
˚F
Pressure Transducers: +/- 5PSI
Humidity Sensor:
+/- 3%
Dew Point Sensor:
+/-
2 ˚F
CO2 Sensor:
+/- 50ppm
If the sensor requires a larger offset than listed above,
then the sensor should be evaluated and replaced if
necessary.
The CO2 sensor will only appear if the
Flō
unit contains
the CO2 option. The second suction/discharge pressure
transducers will only appear if the
Flō
unit has more than
two compressors. And the VAV sensor offsets will only
appear if the unit is connected to a VAV zone. Next to
each offset is the actual sensor reading including the
offset.
To adjust the sensor offset:
1.
Using the
and
buttons (T4 and T6)
navigate and highlight the “
-
” next to the sensor
you wish to adjust.
2.
Once the value is highlighted, press the
(T5)
button and the value should blink.
3.
Using the
and
buttons change the value
to “+” or “
-
“depending on if the offset is intended
to increase or decrease the sensor reading.
4.
Once the desired value has been reached press the
button to set the value.
5.
Repeat steps 1-4 to adjust the value of the Offset
for the sensor you wish to adjust.
6.
Use the
(T7) and
(T8) buttons to navigate
to the next page for additional sensors that require
offsets.
7.
Once all changes have been completed, press the
(T1) button to the Field Tech Options Menu.
Figure 53. Sensor Offsets screen 1
T1: Go to Field Tech Menu
T2: Go to Pressure Offset Menu
T3: Go to VAV Offset Menu
T4: Scroll Up/Increase Value
T5: Enter (Select and Set Value)
T6: Scroll Down/Decrease Value
T7: Previous Page
T8: Next Page
Figure 54. Sensor Offsets screen 2
