Airflow Sensor Calibration; Type A2 And Type C1 - Labconco Logic+ A2 Technical Manual

Airflow Sensor Calibration

All Type B2 biosafety cabinets have an airflow sensor to sense the exhaust air pulled
from the cabinet by the remote (building) exhaust system. Type A2 and C1 biosafety
cabinets may have an airflow sensor as an optional accessory.
Unless installing or replacing the airflow sensor, the zero point should be correctly set
from the factory (see Zero Point Calibration later in this section). Once proper airflows
have been set by a trained and qualified certifier, the nominal set point should be
calibrated after setting the Filter Life Gauge in the Calibration menu. For a Type B2
biosafety cabinet, both the nominal and alarm set point will be calibrated.

Type A2 and Type C1

Note: If installing an airflow sensor on an A2 or C1 biosafety cabinet in the field, which
did not previously have this accessory installed, first enable the Airflow Sensor in
Configuration, as described in
To access the Airflow Sensor Calibration screen(s), follow the steps in
Blower Speed and Setting the Filter Life Gauge
the Filter Life Selection
1. On the Filter Life Selection
NEW FILTER
SAME FILTER
SET FILTER LIFE
2. Using the average inflow velocity measured during airflow certification, use
or [DOWN] to adjust the
The Nominal Inflow Value
(FPM) or meters per second (M/S) based on the desired units selected in the
Settings submenu. Once set, press [OK/MUTE].
Change Configuration
screen. Then follow these instructions:
screen, press [OK/MUTE].
[OK/MUTE]
Nominal Inflow Value
will flash, and it will be displayed in feet per minute
47
in Section 8: Configuration.
previously shown in this section, until on
INFLOW = 105 FPM
'OK' TO CONTINUE
to match this measured velocity.
Adjusting the
INFLOW
CALIBRATION
Nominal
Inflow
Value
[UP]