AirSense
Model I-310en Operator’s Manual
10/16/11
Page:
10
Altitude Correction Considerations
The Model I-310en is factory-
calibrated for operation at sea
level. When operated at higher
elevations, the calibration will
correct for altitude as the unit
detects outside air concentration
In applications where the detected
CO
2
concentration does not
routinely fall close to outside-air
levels, the procedure below can be
used to set the operating elevation.
Beware that this procedure
works only on units that are
calibrated for sea level
operation.
Altitude Correction Procedure
To adjust the calibration of a unit
currently calibrated for sea level
operation to a new altitude proceed as follows:
1. Let the Model I-310en stabilize to the ambient CO2
concentration, and record the reading in ppm. If the
reading is greater than 1500 ppm, wait for a lower
reading before performing this procedure.
2. Multiply the reading by the scale factor corresponding to
the operating altitude in the altitude correction table.
For instance if the unit is operating at an altitude of 4000
ft, the scale factor from the table is 1.14. If the
concentration reads 420 ppm, multiply 420 times 1.14
giving 478 ppm. Adjust the display to read 480.
3. Remove the Model I-310en’s cover (see cover removal
procedure on page 4).
4.
Note whether the shorting block at jumper JP5 is
covering both pins or only a single pin
, then borrow the
shorting block and slide it over the two pins of jumper
JP2 (see Figure 2 on page 5). Use the 'UP' and 'DOWN'
ALTITUDE
CORRECTION TABLE
Altitude
[feet]
Multiplication
Factor
0
1.0
500
1.02
1000
1.03
1500
1.05
2000
1.07
2500
1.08
3000
1.10
3500
1.12
4000
1.14
4500
1.16
5000
1.18
INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com
Specifications subject to change without notice. | 111011 | PRE 200217 | Page 13 of 17
I-310eN – UserManual
