Senseca ECO 420 handleiding
Handleiding
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ECO 420 series - Compact CO2 monitor with alarm
Operation and maintenance
B-H90.0.0X.DK2-4.1 Page 16 of 26
If the calibration is not completed successfully an error message is displayed. [AL ERR. appears
in the display. (See chapter 7 “Error and system messages”)
Confirm the error message pressing the Function key. The device restarts. The values of the
last correctly performed calibration are restored.
6.2.1 1-point adjustment
Used for optimization of the accuracy at the adjustment point. The best possible accuracy
can be achieved even with elevated CO
2
concentrations
Required material:
• Clean ambient air or test gas (>350 ppm) for gradient correction
• Gas extraction device, if applicable
In order to conduct a CO
2
adjustment, proceed as follows.
1 Press the Function key for 4 seconds to start the calibration. [ONF appears in the display
first, then [AL.
2 1-point calibration is started. [.SL appears in the display.
3 The device determines a stable value first. If the measured value is outside of the value
range integrated in the device, the display flashes briefly and an acoustic signal is issued
every 10 s.
4 If the display flashes briefly, an acoustic signal sounds and the bar display blinks, a stable
correct value has been achieved.
5 You can change the value of the gradient compensation with the up key and down key.
Otherwise, confirm the preadjusted value with the function key.
The 1-point calibration is finished.
6.2.2 2-point adjustment
Used for optimization of the accuracy for extreme requirements over a wide measuring
range beginning from 0 ppm.
Required material:
• Test gas (>350 ppm) for gradient correction
• Test gas 0 ppm CO
2
for zero point
• Gas extraction device
In order to conduct a CO
2
adjustment, proceed as follows.
1 Press the Function key for 4 seconds to start the calibration. [ONF appears in the display
first, then [AL.
2 2-point calibration is started. [.OF appears in the display.
3 Allow the test gas to flow at about 0.5 l/min at 0 ppm of CO
2
.
The device deter-mines a stable value first. If the measured value is outside of the value
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Productinformatie
| Merk | Senseca |
| Model | ECO 420 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 2979 MB |
