AutoPSI-S - Optrand, Inc.
Contents
1. sealing torque 12 to 17 in lb O Ring These sensors are designed for the Optrand s PSIplug a modified production spark plug Model SP 55 65 When installing these sensors verify the O ring is not damaged with each installation An O ring insertion tool is recommended when replacing an O Ring Apply installation torque of 3 to 5 in lb M3 5 sensor housings use this sealing technique Example C21265 Glow plug Spark plug Use manufacture recommended torque 3 2 Installation General Install the sensor into a drilled and tapped hole Verify the sealing techniques are properly implemented Tighten the sensor to the recommended torque Optrand Inc will not be liable for any injury or property damage that results from improper use or installation of Optrand products PSIplug Sensor Assemblies In order to avoid damage to the sensor extreme care must be exercised when installing miniature sizes specifically in the PSIplug With each installation of the PSIplug use a new spark plug washer Inspect o rings for wear and tear on a regular basis and replace them when necessary Doc OD 002E 9 18 09 3 3 3 AutoPSI Signal Conditioner The AutoPSI system is designed to continuously monitor dynamic pressure The patented circuitry is designed to provide auto referencing which maintains sensor accuracy at extreme temperatures and over long periods of time The sensor has either four or five wires extending out of the electronic enclosur2. 294 Q Sensors with GP and GPA Model Number Extensions GP Sensors denote a P Slglow functional glowplug sensor GPA Sensors denote the PSIglow A sensor package which does not have glow plug functionality sensors for Non Combustion Applications Sensors without the incorporated flame arresting heat shielding element are suitable for non combustion applications Model numbers of all non combustion sensors do not have the application specific model number extensions PSIplug Mountable Sensors The M3 5x0 6 sensors can be used for combustion applications when mounted in the PSIplug modified production spark plug The flame arresting heat shielding element is incorporated inside the PSIplug See the chart on the next page Sensor Model Numbering Guide i 0 7 bar 100 psi 1m 2 0 70 bar 1 000 psi 2 1 0 Hz 25 kHz 2 1 5m 5 1 M8x1 0 1 Conical Tip 118 3 07200 bar 3 000 psi 2 Conical Tip 60 1907340 bar 5 000 ps 4 Flange Face 7 0 700 bar 10 000 psi 5 O ring 8 O 100 bar 1 500 psi 8 Taper Shoulder 9 O 2000 bar 30 000 psi Fi Accessories Series A Armored Cable Q Integrated Flame Quencher GPA PSlglow Adapter Non glowing PSlglow Sensor Integrated with Spark plug PSlplug Example C 2 1 3 7 1 La A J AutoPSI S Sensor Type 0 70 bar 1 000 psi Pressure Range Sta
3. ORRA TED u an Colla AutoPSI Pressure Sensor Instructions rating Ope Table of Contents 1 Overview 2 Specifications 3 Operating Instructions 3 1 Pressure Sealing 3 2 Installation 3 3 AutoPSI Interface Unit 4 Static Pressure Calibration 5 Connecting to Data Acquisition System Pressure calculation 6 Sensor Model Numbering Guide 7 NEC Class 1 Div 2 Information 8 PSIplug Installation Notes Doc OD 002E 9 18 09 1 Overview The AutoPSI S Pressure Sensor is a fully self contained unit The sensing element is coupled via an optical fiber to an enclosure that houses all electronic circuitry The enclosure has four or five color coded leads depending upon system grounding requirements for terminating to a power source and data acquisition system 2 Specifications Over Pressure Non Linearity k Hysteresis Diaphragm Resonant Freguency Freguency Range Sensor Housing Temperature Range Cable Operating Temperature Fiber optic Cable Length Fiber optic Cable Mim Bending Radius Sensor Type Interface Unit Pressure Output Signal Diagnostic Output Signal Power Supply Voltage Current Draw Interface Temperature Range Pressure Media Vibration Guaranteed Lifetime Doc OD 002E 9 18 09 2 x Pressure Range typical 0 5 FS under non combustion conditions under constant temperature 1 3 FS under combustion conditions 1 varying t
4. e tube The following describes the purpose of each wire White Wire Sensor Output Signal Blue or Green Wire Diagnostic Static Calibration Red Wire Power Black Wire Ground Power and Signal Bare Wire Case if present otherwise case is connected to Ground Power Apply 9 18V DC for S sensors and SV DC for A Sensors between the Red and Black wires 12V DC 1s the recommended operating voltage for S sensors 028 5 1 13 x 77 4 3 05 Case Ground Bare Signal Out Wht Diagnostic Grn Ground Blk Power In Red N Sensor Output Signal Connect between the White and Black wires The output signal is analog 0 5 5 0 Volts for S Sensors and 0 5 4 5 Volts for A sensors The analog signal and Sensor Sensitivity Value must be used to calculate the correct pressure Each sensor comes with a Sensitivity Value Label attached to signal conditioner If the sensitivity label is destroyed or lost the sensor can be calibrated Refer to section 4 in this manual Diagnostic Output Signal Connect between the Blue or Green wire and the Black wire The diagnostics output signal is a DC Voltage proportional to the LED current level and indicates when the sensor 1s in or out of calibration This voltage 1s typically in the 1 0 3 0 Volts range for S Sensors 0 5 2 0 Volts for A Sensors and can vary from sensor to sensor The LED current 1s continuously adjusted to compensate for the sensor electronics temperatu
5. emperature within one combustion cycle 120 kHz min 1 0 Hz to 25 kHz 40 C to 350 C 40 C to 200 C 2m 6 5 5mm 3 16 Sealed Gauge Integrated with Sensor Analog AutoPSI S 0 5 5 V AutoPSI A 0 5 4 5 V Analog AutoPSI S 0 5 3 6V AutoPSI A 0 5 2 5 V AutoPSI S Sensors 9 18V DC AutoPSI A Sensors SV DC 85 mA Max 50 mA Typical AutoPSI S 20 C to 60 C AutoPSI A 20 C to 125 C Gaseous or Liguid 100G 1 2 or 3 Years depending on sensor package or application 3 Operating Instructions To operate simply install the pressure sensor apply power and start measuring the pressure signals The rest of this section describes each step in detail 3 1 Pressure Sealing Installation Torque There are several sealing methods for the sensor The sealing option is part of the sensor model number Conical Tip or Tapered Shoulder Pressure sealing surface is located at the front of the sensor Recommended sealing torque 50 100 in lb Example Conical C31242 Q Shoulder Requires a brass or copper washer at the step of the sensor housing Recommended sealing torque 25 in lb Example C31273 Q Flange Requires a brass or copper washer over the threads of the housing The flange or hex part of the housing squeezes the washer Recommended sealing torque 15 to 25 in lb Example C21224 Q Flange Face M5 sensors only Sensor can be sealed either on the flange or the face which has a 118 Deg taper seat Recommended
6. fication is 10 in lbs a 1 3 turn from finger tight is appropriate to seal the sensor The O ring is designed for several uses only should be inspected after each removal of the sensor If tears or cracks are found the O ring should be replaced O rings should be installed with care as not to damage them on the threads Moistening the O ring can also help in achieving a good fit inside the sensor adapter The spark plug and sensor assembly should be installed as a whole using an appropriate slotted socket Sockets are available from Optrand or can be machined by the user A user machined socket must have a slot to accommodate both the adapter on the plug and the sensor cable to prevent pinching of the cable between the plug well and outside of the socket 0 25 6 5mm wide for the adapter and 0 125 3 5mm wide for the cable Please contact Raph Wlodarczyk 734 451 3480 or sales optrand com if you have any questions regarding PSIplug installations Doc OD 002E 9 18 09 Optrand Inc 46155 Five Mile Road Plymouth Michigan 48170 USA Phone 734 451 3480 Fax 734 451 2945 www optrand com DOC OD 002 REV E
7. nd other values consult your user manual for optimum results To calculate the pressure from the sensors output voltage the following formula should be used P V Vmin S P Pressure psi V Output voltage V Vmin Minimum output voltage V S Sensitivity V psi please note sensitivity on sensor label is in mV psi Example Sensor sensitivity 1 51 mV psi 0 00151 V psi Measured sensor output 5 0 V Measured sensor minimum voltage 0 5 V P 5 0V 0 5V 0 00151 V psi 2980 psi 205 46 Bar 6 Sensor Model Numbering Guide AutoPSI A and AutoPSI S Sensors The 5V powered AutoPSI A Sensor is identified with a Hxxxxx 1 e H32394 Q model number The AutoPSI A sensor has only one type of sensor High Temperature electronics Temperature compensated sensor and 1s always labeled with a Hxxxxx model number The 9 12 V power AutoPSI S Sensors are available as either and AutoPSI S standard or AutoPSI TC temperature compensated variants The AutoPSI S Sensor will always have a Cxxxxx 1 e C32394 Q model number and the AutoPSI TC Sensors will always have a Dxxxxx 1 e D32394 Q model number Sensors with Q Model Number Extension Sensors with the Q model number extension are suitable for all internal combustion applications gasoline natural gas or Diesel engines All Q Doc OD 002E 9 18 09 6 sensors incorporate a flame arresting heat shielding element inside the sensor housing Example C21
8. ndard 0 1 Hz to 5 kHz Bandwidth Custom 5m Fiber Optic Cable Length 3 8 24 Thread Size Conical Tip 118 Pressure Sealing Integrated Flame Quencher Armored Cable Doc OD 002E 9 18 09 I 1 Notes on NEC Class 1 Div 2 Installations Certain Optrand sensor models are UL Listed for use in NEC Class 1 Division 2 hazardous locations Approved use requires that these models be properly installed using an Appleton Electric conduit connector type TMCX118100 A current limit of 400mA at a potential limit of 18V 1s the maximum allowable on any wire without having special approval for the device from a safety regulatory organization such as UL for Class 1 Div 2 installations Since each sensor draws approximately 85mA the maximum number of sensors that can be powered from one power supply is four We recommend using a 12V DC power source with a 0 4A fuse Please contact Optrand if you need additional information 8 PSIplug Installation Notes Special care is required when installing the spark plug boot or ignition coil Since the sensor can potentially sit very close to the ceramic the boot may cause damage by prying the sensor off the spark plug It may be necessary to remove some of the boot material prior to installing the sensor to allow clearance for the sensor and cable The sensor hex size is 9 64 3 57mm and should be installed using an appropriate miniature box wrench or miniature adjustable wrench Although the torque speci
9. ors with zero volts on diagnostic wire The output voltage will decrease as the diagnostic voltage is increased 4 5 Allow up to 20 minutes for the circuit to stabilize some readjustment may be required 4 6 Start the calibration process 4 7 After the calibration is complete remove pressure from the sensor If the zero pressure output voltage is changed significantly the circuit Was not stabilized before calibration A second technigue connects a potentiometer from the diagnostic wire either blue or green to ground Steps 4 3 amp 4 4 of the above procedure are as follows 4 3 Connect a 2 kOhm twenty turn potentiometer or variable resistor from the diagnostic wire blue or green to ground black wire Adjust the potentiometer to zero Ohms 4 4 Monitor the sensor output voltage white wire and adjust the potentiometer until the output signal drops to 0 6V Doc OD 002E 9 18 09 5 5 Connecting to Data Acquisition Equipment If connections of Optrand Sensors to Data Acquisition System are not made correctly noisy signals or damage to electronics may occur All data acquisition systems require a ground reference whether the input signals are differential or single ended This is often done with a resistor between the input signal ground and system or digital ground on the data acquisition card National Instruments recommends a 100kOhm resistor for a ground reference Other manufacturers of data acquisition cards may recomme
10. re fluctuations fiber bending or aging of the opto electronic components Optrand s patented auto referencing technique A diagnostic voltage greater than 3 6 Volts for the S Sensor and 2 5 Volts for the A Sensor indicates a faulty sensor In dynamic operation the diagnostic wire does not require any Doc OD 002E 9 18 09 4 connection unless the user wants to continuously monitor the sensor health The auto referencing feature uniguely available to Optrand sensors 1s particularly useful in long term monitoring and control applications 4 Static Pressure Calibration The AutoPSI S sensor can measure static pressure when the diagnostic blue or green wire is used as input instead of an output If the diagnostic wire 1s connected to a DC power source 0 3 5 volt or a potentiometer to ground the sensor will measure static pressure This mode is useful for calibrating the sensor with a dead weight tester or other static pressure calibration technique The two recommended procedures for static calibration of the AutoPSI S sensor are as follows 4 1 Install the sensor to the test instrument 4 2 Apply power to the sensor 4 3 Drive the diagnostic wire blue or green wire with a variable voltage source starting at zero volts 4 4 Monitor the Sensor Output voltage white wire and adjust the voltage source on the diagnostic until the output signal drops to 0 6V The output signal will be at 7V for S Sensors and SV for A Sens
Download Pdf Manuals
Related Search