Improved Aircraft Signal Conditioner Unit
Overview
- Delivers Class III accuracy
- Processes signals from up to 12 probes/sensors
- Capacity for up to 8 different tank configurations
- All in one signal conditioning unit
Enclosure
- Dimensions: 6.4”x 6.3”x 2.7” (16.3cm x 16.0cm x 6.9cm)
- Weight: Approx 2 lbs (0.9kg)
- Connectors: D38999/26SC35SN, D38999/26SD35SA, D38999/26SE35SN, D38999/26SD35SN
- Material: Nickel plated aluminum
Features
- Safety
- Detect Fuel Imbalance
- DO-160 Level 4 Lightning Protection
- Reliability:
- Startup, Continuous, and Initiated Built-In-Test (SBIT, CBIT, IBIT)
- Increased Operational Availability via Operational Fault Management (Reduced Common Mode Failures)
- Fuel temperature measurement
- No field calibration required when paired with LMS probes and sensors
- Slosh filtering
- High and Low-Level detection
System Accuracy
- MIL-G-26988C Class III (±1% indication, ±0.5% full scale)
- Densitometer Required
- No Compensator Required for One Fuel Type
- Compensator Required for Multiple Fuel Types
- MIL-G-26988C Class II (±2% indication, ±0.75% full scale)
- No Compensator Required for One Fuel Type
- Compensator Required for Multiple Fuel Types
- MIL-G-26988C Class I (±4% indication, ±2% full scale)
- No Compensator Required for Multiple Fuel Types
Operational Temp. Range
- -55° C to +75° C
Inputs
- One SCU can excite and monitor up to twelve (12) fuel probes or compensators and up to twelve (12) temperature sensors (Reduces number of SCU’s per Aircraft)
- Select up to Eight (8) different tank configurations
- Up to One (1) ARINC 429 receive only data busses
- 8 discrete inputs (4 open/gnd, 4 open/28V)
- Input: 28VDC
Outputs
- Up to two (2) ARINC 429 transmit/receive data busses
- Two 0-10V analog outputs
- Up to 8 discrete outputs
- Customer Specific Requirement
Power Requirements
- Input: 28VDC per MIL-STD-704
- Current Draw: < 100mA
- Maximum Power Consumption: 7W
| DO-160G | Section and Description | Category |
|---|---|---|
| 4 | Temperature & Altitude | B2 |
| 5 | Temperature Variation | A |
| 6 | Humidity | A |
| 7 | Operational Shocks and Crash Safety | B |
| 8 | Vibration | S (Curve T) R (Curve G) |
| 9 | Explosive Atmosphere | E |
| 10 | Waterproofness | W |
| 11 | Fluids Susceptibility | F |
| 12 | Sand and Dust | S |
| 13 | Fungus Resistance | F |
| 14 | Salt Fog | S |
| 15 | Magnetic Effect | Y |
| 16 | Power Input | ZXX |
| 17 | Voltage Spike | A |
| 18 | Audio Frequency Conducted Susceptibility | Z |
| 19 | Induced Signal Susceptibility | ZCX |
| 20 | Radio Frequency Susceptibility (Radiated and Conducted) | R |
| 21 | Emission of Radio Frequency Energy | M |
| 22 | Lightning Induced Transient Susceptibility | A4J4L4 |
| 23 | Lightning Direct Effects | X |
| 24 | Icing | A |
| 25 | Electrostatic Discharge (ESD) | A |
| 26 | Fire, Flammability | C |
For product inquiries or questions, please email: sales@liquidmeasurement.com, or submit the contact form below.