Accutrol T-ABVA 설치, 운영 및 유지보수 매뉴얼 - 페이지 12
{카테고리_이름} Accutrol T-ABVA에 대한 설치, 운영 및 유지보수 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Accutrol T-ABVA 16 페이지.
페이지 인쇄Calibration
Confirm the following checklist items are completed before proceeding:
ABVA unit is installed properly and has been powered up for at least 20 minutes.
The laboratory airflow control system is functioning properly and lab pressurization is being
maintained per design requirements.
The fume hood or BSC exhaust control system is functioning properly and maintaining proper control
set point.
The laboratory temperature control system is functioning properly and room temperature is controlled
per specification (nominal temp 66 to 74 degrees F)
All airflow velocity measurements are to be taken using a calibrated meter providing a minimum
accuracy of +/- 5% of reading. Consult appropriate ANSI/ASHRAE Standards for methods.
Mode 1 Calibration
a. Verify unit is operating in Calibration Mode 1.
One LED ON = MODE 1
b. Once you have confirmed the Alarm is operating in Mode 1, adjust the exhaust flow volume or fume
hood sash to provide the desired velocity for the alarm set point.
c. Using a calibrated velocity meter, measure the average airflow velocity using appropriate
ANSI/ASHRAE method.
If the measured velocity is within the desired alarm set point, then proceed to Step d.
If not, then adjust exhaust flow or fume hood sash, and repeat Step c until the desired
velocity is achieved.
d. To calibrate the alarm set point, press and hold the Calibration Button for 5 seconds, until you hear
the buzzer beep, then release the Calibration Button and step away from the hood. You will now hear
a series of short fast beeps while the microprocessor is acquiring data from the sensor. After about
5-seconds, the buzzer will provide one longer beep to signify calibration set point has been stored.
e. Verify the alarm set point is calibrated properly by modulating the exhaust volume or moving the fume
hood sash to achieve the desired alarm set point.
After calibration is verified, you may place a calibration
sticker over the Calibration Button to identify date of
calibration.
T-ABVA Manual |Rev.C, JULY 2017
Press and Hold MUTE
Button for 3-Seconds
Press and Hold CAL
Button for 5-Seconds
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