H384, H484 & H598 SERIES AIRBORNE ENGINE MONITORS
A vital component of condition-based maintenance, our health and usage monitoring systems monitor critical engine parameters to reduce operating and maintenance costs.
A vital component of condition-based maintenance, Howell’s health and usage monitoring systems help flight crews:
- Troubleshoot problems by isolating abnormal performance
- Reduce maintenance cost and system damage through early diagnosis
- Reduce parts replacement
- Improve maintenance scheduling and logistic support
- Improve incident or event analysis
- Eliminate errors in data recording and analysis
- Establish critical engine condition and trend monitoring for enhanced performance
- Engine Temperatures
- Outside Air Temperature
- Pressure Altitude
- Engine Speeds
- Fuel Flow
- Bleed Valve Position
Our monitors retrieve and process data in several ways:
- Monitors display data for a quick check of parameter values, or data can be downloaded to a computer for more in-depth review and analysis.
- User-friendly software prints a report, formats the data into useful graphic presentations or transfers it to other computers. The data can be stored to maintain historical records.
- Our patented Referred Engine Diagnostic Data (REDD)®1 software package provides detailed analysis and diagnosis of processed data. REDD® software quickly determines actual engine condition by calculating and displaying variances between an ideal engine and the monitored engine.
- H384, H484 & H598 Series Airborne Engine Monitors
Trend data can be recorded manually or automatically during flight. The monitor records all relevant parameters along with the date and time. The data can be formatted for use with an engine manufacturer’s approved software or with Howell’s own patented trend software programs.
Monitors detect an excedience and record the time of the event, its duration, peak value, values of related parameters, and if applicable, the maintenance level required based on severity. Monitors can also recall related parameter values leading up to the event from a buffer. These values are stored in memory and assist in post flight analysis of the excedience. An output signal to a cockpit advisory or warning panel is also available.
FLIGHT PROFILE DATA
Monitors record profile data by two methods: Timed Recording Mode or Profile All Mode.
- The Timed Recording Mode collects data at fixed time intervals set by the operator.
- The Profile All Mode collects transient data, including start and shutdown data at a preset rate. All other operation data is recorded when the engine stabilizes within a new “operational band.” This data compression technique minimizes the amount of data stored, thus maximizing operational time monitored.
IDENTIFICATION & USAGE DATA
- Date and Time
- Aircraft Number
- Engine Number
- Engine Starts
- Engine Hours
- Engine Cycle Counting
- Hot Section Exposure
- Low Cycle Fatigue
|H484||H384 & H598|
|Dimensions||3.00” H x 6.00” W x 7.16” D||3.75” H x 5.75” W x 6.50” D|
|Weight||4 lbs||4 lbs|
|Processor||32 BIT RISC||32 BIT RISC|
|Input Power||14 to 40 VDC, 50W||14 to 40 VDC, 50W|
|Operating Range||-40 to 70 °C||-40 to 70 °C|
|Frequency Inputs||5@ 3.5 to 30,000 Hz||5@ 3.5 to 30,000 Hz|
|Thermocouples||2 ANSI Type K||8 ANSI Type K|
|Discrete Inputs||6@ 0 to 28 VDC||16@ 0 to 28 VDC|
|High Level Inputs||3@ ±30 VDC||12@ ±30 VDC|
|Discrete Outputs||2@ 28 VDC, 1 Amp||4@ 28 VDC, 1 Amp|