Armstrong Monitoring Corporation AMC-310 Talimatlar Kılavuzu - Sayfa 14
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7. Use the 'UP' and 'DOWN' buttons to adjust the high output threshold to the desired
value. In the example this would be set to 1000.
8. Remove the shorting block from JP4 and restore it to its original position at jumper JP5.
The Model 310 will reset and its output will now only change when the gas concentration
is within the range selected. Below this range the output remains low, above this range
the output remains high.
5.2 Altitude Correction
The Model 310 is factory-calibrated for operation at sea level. When operated at higher
elevations, the calibration must be adjusted by the amount shown in the altitude correction table
shown below.
Altitude (feet)
Multiplication Factor
5.2.1 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 310 stabilize to the ambient CO
ppm.
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 310's cover (see cover removal procedure on page 7).
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' buttons to change the concentration to the value
just calculated.
5. Remove the shorting block from jumper JP2 and return it to its previous position over
one or both pins of jumper JP5.
6. Replace the cover (see procedure on page 10).
AMC-310 AirSense Infrared CO
ALTITUDE CORRECTION TABLE
1.0
1.02
1.03
1.05
0
500
1000 1500 2000 2500 3000 3500 4000 4500 5000
Analyzer
2
1.07
1.08
1.10
concentration, and record the reading in
2
12
1.12
1.14
1.16
1.18