Data Acquisition Systems
Howell Data Acquisition Systems may contain one or multiple Data Acquistion Units (DAU), one Configuration Module Unit (CMU), and one or two Display Units (DU).
Features
Howell offers multiple configurations of DU sizes and graphical layouts to satisfy customer requirements. All options will include 2 DUs of varying dimensions. Like the DAU, the Display Units are configurable to maximize adaptability, flexibility and expandability applicable to multiple aircraft types. Each DU has a personality module, which stores specific installation information. The installation information is used to configure the items displayed on the DU to the specific engine and display options without software modifications. The engine gauge layout can be changed to a different engine layout within the existing limit of the display host software modules by using the configuration file.
Industries Served
- Military
- Commercial
- Fixed-Wing
- Rotary-Wing
Specifications
H397 Series
Data Acquisition Unit
Parameters (I/O)
Parameters (I/O): Limited only by the number of pins available in the connector (79)
- Frequencies 3.5 Hz to 30,000 Hz, 0.5 Vrms to 150 Vrms
- Thermocouples, ANSI Type K thermocouple from 0 °C to 1200 °C
- RTDs (2 or 3 wires)
- DC Voltages (High or Low Level)
- Synchro
- Second Harmonic
- Ratio-metric (Engine Oil Pressure, etc.)
- Capacitive Fuel Quantity
- Discrete inputs, Switch closure to ground or 28 VDC)
- Discrete outputs, current Source or Sink limited to 0.2 amp resistive load
- RS-232, RS-422
- ARINC 429, 825
Specifications
Software Certification is to DO-178B DAL A
Environmental certification is to DO 160-G
Power: 28 VDC nominal per MIL-STD-704A. Power consumption 15 Watt Max.
TSO: C43c, C44c, C47a, C49b, C55a
Reliability substantiated to 10-9 (Catastrophic) per MIL-HDBK-217
Dimensions: 8.4” x 4.8” x 2.6”
Weight: 4.0 lbs Max
Specifications
H697 Series
Configuration Module Unit (CMU)
Specifications
Two operating modes allow for normal operation or maintenance.
Dimensions: 4.00” x 2.13” x 1.56”
Weight: 0.5 lbs
Power: 28 VDC nominal, 2 Watts Max
Gallery
Notable Clients
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