NuAire LabGard NU-543-300E, Руководство по эксплуатации и обслуживанию

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OM0284 Page 47 of 72
Rev 2 July/2021
7.5.4.3 Sensor Value Adjust
From calibration parameter menu, select and press ENT key for sensor value adjust.
Select and press ENT key for inflow velocity
The actual inflow value and offset will be highlighted.
Pressing the ↑ or ↓ keys will increase or decrease the amount of airflow velocity offset shown on the
bottom of the display.
Using the measured average airflow velocity obtained (i.e. 105fpm) (.53mls) enter the amount of offset
necessary from the actual sensor velocity value (i.e. 120fpm) (.61mls) to achieve the measured or intended
display value (i.e. 120fpm -15 = 105fpm) (.61mls -.08 = .53mls). Offset value may be positive or negative as
needed. Once desired offset value is achieved, press ENT key to accept.
•
Press to exit.
7.5.4.4 Alarm Verification
If desired, the alarm setpoint can be verified by entering into the alarm verification menu.
The airflow alarm is always active in this menu, so if the blower is turned on in this menu, an airflow alarm will
be active until the airflow is above the low alarm limit.
Using the ↑ and ↓ key adjusts blower speed as necessary to activate a low or high airflow alarm. Measure
either downflow or inflow at the alarm point to verify limits.
Calibration Parameters
Blower Speed
Sensor value adjust
Alarm validation time 30 sec
Alarm verification
Sensor Value Adjust
Inflow Velocity 120
Temperature 260
Offset = -15
Alarm Verifications
105
1020rpm, 50.1%
fpm, 26.0⁰