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AS-MLLS Multipoint Liquid Level Switches
SummaryFCI provides multipoint liquid level and interface
switches that include a “strip sensor” or a thermowell mounted
sensing element with integral or remote electronics that provide
indication of presence or absence of liquid or interface at the
multiple sensor locations along the length of the element. The
multipoint liquid level element is directly installed into tanks,
reservoirs, sumps and gearboxes on commercial and military aircraft,
spacecraft, vehicles and marine applications. Optional temperature
output and controller function is available.
Please complete and submit the attached Application Data Sheet or
contact FCI’s Field Representative in your area to receive a
technical quotation for your Multipoint Liquid Level and Interface
Switch application.
Applications |
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Hydraulic
gearbox oil |
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Fuel tanks and
reservoirs |
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Lubricating
gearbox oil |
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Potable water |
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Coolant and
heating fluids |
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Gray water |
SpecificationsService: Liquid multipoint level.
Accuracy Liquid level: ± 0.25 inch of sensing point.
Accuracy Temperature: ± 1% full scale.
Repeatability: ± 1% full scale..
Reliability (MTBF): 60,000+ Hours.
Qualifications: MIL STD 810 and RTCA/DO-160, customer project
qualification support optionally available.
Quality System Approvals: ISO9001 and AS9000
Weight: Liquid Level Element: 1 to 2 lbs. [0.45 to
0.90 kgs] depending on configuration.
Remote Control Unit Enclosures: 1 lb. [0.45 kgs].
Level ElementMaterials of Construction:
Standard: 316 stainless steel mounting connection with PVC
stilling well structure and Kapton
polyimide RTD elements..
Optional: All 316 stainless steel level element with
brazed or all-welded design.
Process Connection: Threaded fitting per MS33514-16 Style 3
(1.312-12 UNJ-3A) or mounting flange available per customer
requirement.
Insertion Length: (Sensing Level Depth) Up to 40 inches [1016
mm] as required by customer.
Operating Temperature:
PVC/Kapton Polymide Design: -65° to +158° F [-54° to +70°
C].
Stainless Steel Design: -65° to +650° F [-54° to +343°
C].
Proof Pressure:
PVC/Kapton Polymide Design: Up to 300 psig [21 bar(g)].
Stainless Steel Design: Up to 2000 psig [138 bar(g)]
Electrical Connection: Connector on flying lead or
element-mounted connector.
Controller
Operating Temperature: -40° to +131° F [-40° to +55° C]
Higher temperature service optionally available.
Input Power: 28 Vdc nominal per MIL-STD-704. 7.5 Watts
maximum.
Power Consumption: 50 to 85 mA.
Output Signal: Discrete ground/open switched array. Stepped
4-20 milliamp output optionally available.
Enclosure: Aluminum Alloy painted lusterless black per
MIL-C-83286. Integral control unit enclosure optionally available.
Electrical Connection: Military or commercial connector.
Optional Equipment: All welded 316 Stainless Steel
Construction. Integral Control Electronics. Process Mounting Flange.
Calibration and/or material certificates.
Optional N.I.S.T. Test Lab Calibration Services
Factory N.I.S.T. calibration is available as an option for customer
specified setpoint(s). |
