3
Specifications
General Information
The Liquid Controls Optical Air Eliminator is designed for
use with LectroCount
®
Electronic Registers. An optical
sensor, installed in the wall of the air eliminator housing,
is used to monitor the liquid level. The presence or ab-
sence of liquid at the sensor level activates or deactivates
a solenoid valve located at the top of the air eliminator to
vent air or vapor from the system.
The optical air eliminator is designed to work with Liquid
Controls M5, M7, M10, M15, and M25 meters, for appli-
cations measuring refined petroleum products. Designed
with the same mounting dimensions as Liquid Controls
mechanical air eliminators, the optical air eliminator does
not require plumbing changes to retrofit to existing meter
installations; however, electronic registers do require CPU
board part number 81920 for LCR and LCR-II; CPU board
part number 81924 for LC³. The optical air eliminator also
requires the use of a solenoid-operated control valve such
as the E-7 or A2848-11 on the outlet side of the meter.
Environmental Rating
NEMA 4X
Safety
Designed to meet Class I, Division 2 requirements
Materials of Construction
Class 1
Body:
Aluminum
Solenoid
: Brass
Class 2
Body
: Anodized Aluminum
Solenoid
: Stainless Steel
Pressure Rating
Maximum non-shock working pressure
• 150PSI (10.3BAR)
Maximum differential pressure
• 100PSI (6.9BAR)
Temperature Rating
-40° to 160°F (-40° to 71°C)
Products
Class 1
Refined Fuels
Gasoline, Gasohol, Diesel fuel, and Fuel Oil
Class 2
Aviation
Av-Gas and Jet Fuel
Solenoid (S3)
Voltage:
+12 (± 2)VDC
Optional:
+24 (± 4)VDC
Current:
1A maximum
Optical Sensor
Voltage:
+10 to +28VDC
Current:
0.5A maximum
Class 2
The Liquid Controls Optical Air Eliminator can be manufac-
tured for Class 2 aviation applications. The Class 2 optical
air eliminator (Part #A8981A) is made with an anodized
aluminum housing and a stainless steel solenoid valve.
Optical Air Eliminators (A8981 & A8981A)
