S0210921 Smart Engine Analyzer (SR-8A) Operating and Installation Instructions OI 020481 and II 012881 1/28/88 Rev. C: 2/2/93 * You must read this manual before installing or operating the instrument. Model: S/N: Electronics International Inc.
Important Notice ***** MUST READ ***** If you think it is not important to read this manual, you're wrong! This manual contains important installation information that may affect the safety of your aircraft, delay your installation or affect the operation of your instrument. You Must read this manual prior to installing your instrument. Any deviation from these installation instructions is the sole responsibility of the installer/pilot and may render the STC invalid. Read the Warranty / Agreement.
Contents Warranty ------------------------------------------------------------------------------ 2 Operating Instructions: ------------------------------------------------------------ 3 Introduction ---------------------------------------------------------------------------------Features --------------------------------------------------------------------------------------Operating The Smart Analyzer in Your Aircraft ---------------------------------------- 3 3 6 Installation Instructions: ------------
Warranty 1209921 Electronics International Inc. warrants this instrument and system components to be free from defects in materials and workmanship for a period of one year from the user invoice date. Electronics International Inc. will repair or replace any item under the terms of this Warranty provided the item is returned to the factory prepaid. l. This Warranty shall not apply to any product that has been repaired or altered by any person other than Electronics International Inc.
SR-8 OPERATING INSTRUCTIONS OI 020481 Rev: A 2/10/92 The Smart Analyzer is easy to operate. You can learn the basic operation of this unit in the first few minutes of hands-on operation. Although the Smart Analyzer is simple to operate, its capabilities are numerous. The following section will describe the operating features of the Smart Analyzer and some of its capabilities. Features 1. Multi-Function Capability: The Smart Analyzer has 8 channels.
Operating Instructions Features A set of switches on the back of the Smart Analyzer allows the unit to be set up for a 4 or 6-cylinder engine, fuel-injected or carbureted engine and to scan 6 or 8 channels (see Installation Instructions for more information). 2. Mode Select Switch: A) Manual Mode - With the Mode Select Switch in the center position, the Smart Analyzer will display the temperature on the channel designated by the green Channel Indicators.
Operating Instructions Features 1) Any EGT or TIT channel exceeds 1650F. 2) Any CHT channel exceeds 500F. 3) Any EGT or TIT channel drops below 1100F. 4) As an EGT analyzer (when first 4-6 channels on the SR-8A are used to measure EGT's): Any time the EGT spread between cylinders exceeds 95F for a fuel-injected engine (195F for a carbureted engine). Also, a DC (Differential Condition) indicator will appear in the display.
Operating Instructions Features Analyzer has detected a problem but it will not stop its scan until it reaches the hottest analyzer channel. (Note: In order to use this feature to lean to an EGT, the first 4-6 channels of the SR-8A should be used to measure EGT's.) B) Scan Mode - You may also use the Peak Locate feature in the Scan Mode. Pressing the Peak button will start the fast scan on the current channel being displayed and it will scan until it reaches the hottest analyzer channel.
Operating Instructions Operating The Smart Analyzer in Your Aircraft Temperature Limits. The Smart Analyzer will automatically diagnose your engine during takeoff. A red Temp Prob light will alert you if the Smart Analyzer detects a problem during takeoff. 4. Climb: Leave the Smart Analyzer in the Scan Operating Mode during the entire climb. The Smart Analyzer will automatically diagnose your engine during the climb. A red Temp Prob light will alert you if the Smart Analyzer detects a problem.
Operating Instructions Operating The Smart Analyzer in Your Aircraft adjustments and wait 3 to 5 seconds between adjustments. As you approach peak the exhaust gas temperature will rise much slower until it starts to decrease. When this happens you have reached peak EGT. The 1`F resolution of the digital display will be invaluable in helping you precisely detect peak EGT. C) Finding The Cylinder That Peaks First: For most engines step B (Precision Leaning) will result in a properly leaned engine.
INSTALLATION INSTRUCTIONS II 012881 S1003911 Rev. A 2/10/92 You should have no trouble installing the Smart Analyzer in your aircraft. The instrument, probes and cables simply plug together to make hookup easy. Probe and instrument installation is standard and straightforward. Although instrument setup may be new to some of you, it is a simple matter of setting four switches on the back of the unit. Perform step #1 then only the steps that apply to your configuration: 1.
Installation Instructions 1. Important Information and Initial Check Out: 6. Before starting the installation make sure the unit will fit in the location you intend to install it without obstructing the operation of any controls. 7. If this instrument is to replace an existing unit in the aircraft, it is the installer's responsibility to move or replace any existing instruments or components in the aircraft. 2.
Installation Instructions 2. Instrument Setup: a) Swt. #1: Set this switch DOWN if you wish to scan 8 channels. Set this switch UP if you wish to scan only 6 cylinders. b) Swt. #2: If you have a 6-cylinder engine, the first 6 channels should be used for EGT or CHT analysis. Therefore, set this switch DOWN. If you have a 4-cylinder engine, set this switch UP. c) Swt. #3: Set this switch DOWN to enable the Differential Warning feature.
Installation Instructions 4. EGT Probe Installation: 4. EGT Probe Installation: A single EGT probe should be installed in the exhaust stack of the leanest cylinder. Each engine has its own characteristics and the leanest cylinder can be different from aircraft to aircraft. As a general rule, the leanest cylinder is one of the back cylinders on a carbureted engine and one of the center cylinders on a fuel-injected engine.
Installation Instructions 6. OIL Temperature Probe Installation: All Other Engines Equipped with a 5/8"-18 Oil Drain Plug Remove the 5/8" - 18 oil drain plug located on the bottom of the engine. Install E.I.s P-120 Oil Probe with a new oil seal and torque to specifications. Check for oil leaks after the first flight. 7. Carb Temp Probe Installation: Remove the threaded plug located in the carburetor housing just below the throttle valve.
Installation Instructions 9. Mark Each Extension Cable: Note 1: Any channel will accept any one of E.I.s probes. Note 2: For channels requiring Precision Connectors, you will remove the Slip-on Connectors and install the yellow Precision Connector as described later in this installation procedure. Note 3: The wire harnesses for a twin-engine aircraft will arrive with the red Slip-on Connectors removed. The connectors are left off to facilitate installation.
Installation Instructions 11. Route Each Extension Cable: Red Slip-on Connector Male Connector Double the wires. Double Crimp Keep the tab straight. E) Place a male connector on the red wire and a female connector on the yellow wire. Double crimp these connectors. A good crimp is very important. Poor crimps will cause jumpy readings and are the biggest source of problems. Yellow Precision Connector A) Strip the over braid back 3 1/2". Be careful not to nick the wires.
Installation Instructions 11. Route Each Extension Cable: Tie off any excess cable under the instrument panel. Be sure these cables do not obstruct the freedom of travel of any controls. 12. Hook Up Connecting Wires: Connect the red wire in the Connecting Wire Harness to the 12 or 24 volt bus via a 1 amp fuse or circuit breaker (see the Wiring Diagram at the back of this manual). Connect the black wire to ground. Connect the white/brown to the 12V bus (leave it open for a 24V system).
Installation Instructions 14. System Ground Test: wrong Extension Cable. If the reading is decreasing, your may have reversed the connectors on the Extension Cable leads (the yellow wire on the probe must connect to the yellow wire on the Extension Cable). B) Start the engine and check each channel for a proper reading. On the ground EGTs will read around 900F and CHTs will read around 200F.
Troubleshooting Suggestions B. Probe Check Out: When measuring from one lead (either lead) of the probe to the probe sheath (metal tip), there should be an open (10k or greater). 2. Another method of checking a probe is to plug the suspected bad probe into a channel that is working properly. If the problem follows the probe, you have a defective probe. C. Extension Cable Check Out: With the Extension Cable connected to the Smart Analyzer, remove the probe from the suspected bad Extension Cable.
SPECIFICATIONS and OPERATING FEATURES S0218921 2/18/92 Model: SR-8 Weight: 16 oz. Environmental: Meets TSO C43a Power Requirements: 7.5 to 30 Volts, 1/10 Amp. Display: LCD (viewable in direct sunlight), with 12 and 24 volt backlight control wires for night operation (channel indicators dim when backlight is on). Display Temperature Range: 1999'F to -1999'F (may be ordered in 'C). Accuracy: 1/2% in accordance with TSO C43a. Resolution: 1F (with enhanced stability and response circuits).
SR-8A Wiring Diagram WD 0218921 Connects to: Probe #1. Probe #2. Probe #3. Probe #4. Probe #5, Probe #6. Probe #7. Probe #8. 2/18/92 Channel marked on ext. cable. 1 2 SR-8A Back View 3 4 5 6 7 8 Extension Cable Harness. Connecting Wire Harness. Description White/Brown White/Red Note: Any channel will accept any one of E.I.'s probes. White/Orange Note: Varying cable lengths will not affect accuracy. Red Black White/Yel 19 Connects To: 12V Back Light. 12V Bus. 24V Back Light.
SR-8A Sample Wiring Diagram For Single 6-Cylinder Engine Aircraft WD 0218922 Connects to: EGT #1. EGT #2. EGT #3. EGT #4. EGT #5, EGT #6. CHT OAT Channel marked 1 on ext. cable. 2 2/18/92 Back View SR-8A 3 4 5 6 7 8 Extension Cable Harness. Connecting Wire Harness. Description White/Brown White/Red Note: Any channel will accept any one of E.I.'s probes. White/Orange Note: Varying cable lengths will not affect accuracy. Red Black White/Yel 20 Connects To: 12V Back Light. 12V Bus.
Appendix A Adding a Channel to the SR-8A If you have an unused channel and would like to add an extension cable to your instrument, perform the following steps: 1. Order an XCS Extension Cable at the proper length from Electronics International Inc. 2. Disconnect the Circular Connector from the back of the SR-8A. 3. Insert the the XCS Extension Cable into the Circular Connector at the proper location (see below). Once these connectors are installed do not try to remove them without an extraction tool.
Appendix B SR-8A Circular Connectors Extension Cable Harness, Back View (wire side) OR Instrument Connector, Front View 2 3 Yel 6 14 3 Red 5 Yel 10 3 4 Red 4 Yel 5 Red 16 1 2 Red 2 Yel 7 Red 7 Yel 1 Red 1 Yel Note: 1 Red = Channel #1 Red wire. 1 Yel = Channel #1 Yel wire.
