Rae AreaRAE, Руководство по эксплуатации и техническому обслуживанию

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PROGRAMMING THE AREARAE
4-13
4.4.4 Single-Sensor Calibration
This procedure determines the second point of the sensor
calibration curve for a single sensor. A standard reference gas
(span gas) is needed to perform this procedure. Table 2.2
(Alarm Limits and Conditions) shows the standard calibration
gas typically used as the span gas at the factory.
1. Continuing from Step 4 or Step 6 of the previous section,
the display should show “Single Sensor Calibration?”
Press [Y/+]. The display shows all the installed sensors in
the monitor with the cursor blinking at the first sensor
location. Press [Y/+] to select the highlighted sensor and
start the calibration. Or press [MODE] to move to the next
sensor location.
TOX1 VOC TOX2
CO VOC H2S
LEL pick OXY
LEL OXY
TOX1 VOC
Gamma
CO VOC - - -
LEL pick OXY
LEL OXY
AreaRAE AreaRAE Gamma
2. Turn on the valve of the CO gas bottle to start gas flow.
Display shows “ Apply CO Gas ” and waits for the
calibration gas to reach the sensor. Once the sensor
detects the gas,
“
Calibration in progress… 60
”
appears
with the countdown timer showing the remaining seconds
as the monitor calibrates. When the countdown timer
reaches 0, the display shows the sensor name and the
calibrated value:
TOX1 VOC TOX2
CO cal’ed
reading = 50ppm
LEL OXY
TOX1 VOC Gamma
CO cal’ed
reading = 50ppm
LEL OXY
AreaRAE AreaRAE Gamma
If the sensor does not detect any gas after 60 seconds,
“
No gas flow…
”
is displayed and calibration is aborted.
Note: The reading should be very close to the span gas
value. After a five-second pause,
“
Span Cal Done! Turn
Off Gas ” appears in the display.