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Pacific Scientific 5170, Инструкция по эксплуатации

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Pacific Scientific 5170 Скачать руководство пользователя страница 16

 

OPERATING FEATURES 

 

Display. 

Liquid crystal display (LCD). 

 

Auto Zero. 

To select AUTO ZERO operation, press the ZERO pushbutton. Unit automatically returns to normal 

operation. 

 

Manual Zero. 

To select MANUAL ZERO operation, press the SHIFT pushbutton followed by the ZERO 

pushbutton. Use the LEFT (3) and RIGHT (4) arrow pushbuttons to select digit. Use the UP (

5

) and DOWN (

6

) 

arrow pushbuttons to make fine adjustments as needed. Press the RESET pushbutton to clear the offset value. 
Press the SHIFT pushbutton followed by the ZERO pushbutton to return to normal operation. 

 

Auto Relative.* 

To select AUTO RELATIVE operation, press the RELATIVE pushbutton. Unit automatically 

returns to normal operation. AUTO RELATIVE automatically turns the relative offset ON. Push again to turn OFF. 

 

Manual Relative.* 

To select MANUAL RELATIVE operation, press the SHIFT pushbutton followed by the 

RELATIVE pushbutton. Press the LEFT (

3

) arrow pushbutton to turn offset ON. Press the RIGHT (

4

) arrow 

pushbutton to turn offset OFF. Use the LEFT (3) and RIGHT (4) arrow pushbuttons to select digit. Use the UP (

5

) 

and DOWN (

6

) arrow pushbuttons to make fine adjustments as needed. Press the RESET pushbutton to clear 

the offset value. Press the SHIFT pushbutton followed by the RELATIVE pushbutton to return to normal 
operation. 

 

Auto Range. 

To select AUTO RANGE operation, press the SHIFT pushbutton followed by the RANGE 

pushbutton. Press the SHIFT pushbutton followed by the RANGE pushbutton to exit Auto Range mode. 

 

Manual Range. 

To select MANUAL RANGE operation, press the RANGE pushbutton. Press the UP (

5

) and 

DOWN (

6

) arrow pushbuttons to select ranges. Press the RANGE pushbutton to return to normal operation. 

 

Units. 

To select UNITS, press the SHIFT pushbutton followed by the LEFT (

3

) arrow pushbutton. Press the UP 

(

5

) and DOWN (

6

) arrow pushbuttons to select flux density readings in gauss, tesla or ampmeters. Press the 

SHIFT pushbutton followed by the LEFT (

3

) pushbutton to return to normal operation. 

Hold. 

To select the HOLD operation, press the SHIFT pushbutton followed by the RESET pushbutton. Press the 

LEFT (

3

) and RIGHT (

4

) arrow pushbuttons to select between MIN HOLD, MAX HOLD, PEAK HOLD

*

, and 

HOLD 
OFF. In any mode press the RESET pushbutton to clear the held reading. Press the SHIFT pushbutton followed 
by the RESET pushbutton to return to normal operation. 

 

AC/DC. 

To select either AC or DC mode, press the SHIFT pushbutton followed RIGHT (

4

) arrow pushbutton. 

 

Analog Output.*

To enable and disable ANALOG OUTPUT operation, press the SHIFT pushbutton followed by 

the UP (

5

) arrow pushbutton. 

 

ON/OFF. 

Press the ON/OFF pushbutton to power the unit ON. To turn the unit OFF, press the ON/OFF 

pushbutton for 3 seconds. 

 

SLEEP MODE. 

This feature turns unit the OFF after one hour of inactivity (i.e. user input, remote commands 

etc.) 
Press the SHIFT pushbutton followed by the ON/OFF pushbutton to enable and disable this feature. The battery 
symbol and either ON or OFF will flash to indicate the state that has been selected. 

 

FIRMWARE VERSION. 

The firmware versions for the microcontroller and DSP may be displayed by pressing 

RESET for more than 1 second while in any normal operating mode. For example: r2.00 d2.00. 

*

5180 Model only 

Figure 3-3 

Operating Features 

3-2 

Содержание 5170

Страница 1: ...Manual UN 01 260 Rev G Pacific Scientific OECO All rights reserved ...

Страница 2: ...RELATIVE MODE 3 15 ANALOG OUTPUT FUNCTION 3 16 ANALOG OUTPUT USAGE 3 17 SOURCES OF MEASUREMENT ERRORS 3 19 MORE DETAILS ON AC MODE OPERATION 3 20 MORE DETAILS ON DC MODE OPERATION 3 21 Section 4 Remote Operation USB INTERFACE CONNECTION 4 1 REMOTE COMMAND STANDARDS 4 1 COMMAND FORMAT 4 1 ERROR BUFFER 4 2 STATUS REGISTERS 4 2 INFORMATION FOR REMOTE OPERATION 4 3 OTHER GENERAL 5180 FILE INFORMATION ...

Страница 3: ... 6 Figure 3 9 Overrange Indication 3 6 Figure 3 10 MODE AC DC Function 3 6 Figure 3 11 UNITS Function 3 6 Figure 3 12 RANGE Function 3 7 Figure 3 13 HOLD Function 3 8 Figure 3 14 Automatic ZERO Function 3 11 Figure 3 15 Manual ZERO Function 3 12 Figure 3 17 Automatic RELATIVE Function 3 14 Figure 3 18 Manual RELATIVE Function 3 15 Figure 3 19 OUTPUT Function 3 16 Figure 3 20 Analog Output Display ...

Страница 4: ...ust 2 keystrokes Settings for HOLD and Probe Zero are no longer retained when powered on off This often lead to the false appearance that the meter was malfunctioning in previous firmware versions Analog Output now automatically applies optimum filtering to the signal therefore the options of LO and HI have been removed and it is simply an On Off selection Peak Hold has been greatly improved with ...

Страница 5: ...l B in scientific documents In the CGS system a gauss G is one line of flux passing through a 1 cm area The more commonly used term is the tesla T which is 10 000 lines per cm Thus 1 tesla 10 000 gauss 1 gauss 0 0001 tesla Magnetic field strength is a measure of force produced by an electric current or a permanent magnet It is the ability to induce a magnetic field B It is commonly assigned the sy...

Страница 6: ...en the number of flux lines passing through the material flux density and the Hall voltage The Hall voltage is also a function of the direction in which the flux lines pass through the material producing a positive voltage in one direction and a negative voltage in the other If the same number of flux lines pass through the material in either direction the net result is zero volts This sensitivity...

Страница 7: ...robes the Hall generator is mounted in a cylindrical stem The axis of sensitivity is the primary difference as shown by B in Figure 1 3 Generally transverse probes are used to make measurements between two magnetic poles such as those in audio speakers electric motors and imaging machines Axial probes are often used to measure the magnetic field along the axis of a coil solenoid or traveling wave ...

Страница 8: ...peration Another feature called relative mode allows large flux readings to be suppressed so that small variations within the larger field can be observed directly Both the zero and relative adjustments can be made manually or automatically Other features include three hold modes allowing either the arithmetic maximum minimum or instantaneous peak values to be held indefinitely until reset by the ...

Страница 9: ...ations 1 G 300 G 3 kG 30 kG 1 mG 0 1 G 1 0 G 10 G Specifications continued on next page 5180 5170 Ranges Ultra Low Probe Low Mid High Resolution Ultra Low Probe Low Mid High 1 G 200 G 2 kG 20 kG 1 mG 0 1 G 1 0 G 10 G 2 1 ...

Страница 10: ... accuracy must be added to meter accuracy to determine overall accuracy 2 additional 8 mV tolerance for signals 4 of lowest range and 2kHz DC MODE Low Range Mid High Ranges AC MODE for sinewave 6G or 0 6mT 2 10 20Hz 20 5000Hz Analog output 3dB point is approximately 22kHz Delay Time 30µs Sample Rate 8µs with variable moving average filtering Risetime DC Mode 250µs DC peak hold 60µs AC Mode and AC ...

Страница 11: ...s were rigid glass epoxy 150 x 040 Polypro pylene see note Model STD18 0402 2 STD18 0404 4 STH17 0402 2 STH17 0402 4 HTH17 0604 4 HTD18 0604 4 STB1X 0201 1 Material A 0 063 B C Corrected Linearity Sensitivity Active Area Operating Temp Range Frequency Response Temp stability typ Zero Calibrate D 0 025 DIA NOM 1X DC to 20kHz DC to 10kHz DC to 10kHz DC to 20kHz DC only 0 200 Gauss ºC 0 158 004 0 180...

Страница 12: ...h Temperature 0 05 ºC typical Operating Temperature Range 0 to 75ºC 32 to 167 F Storage Temperature Range 25 to 75ºC 13 to 167 F 5180 gaussmeter probes SAD18 1904 4 Axial Probe SAD18 1902 2 Axial Probe 5170 gaussmeter probes SAH17 1904 4 Axial Probe SAH17 1902 2 Axial Probe ACTIVE AREA DIAMETER 0 4 mm 0 015 NOMINAL Figure 2 2 Standard Axial Probe CABLE LENGTH 1 524 m 5 SENSOR LOCATION 0 25 mm 0 01...

Страница 13: ...d Linearity 0 75 of Reading Frequency Bandwidth 0 to 700 Hz 3dB Offset change with Temperature 0 02mG ºC typical Accuracy change with Temperature 0 001 ºC typical Operating Temperature Range 0 to 75ºC 32 to 167 F Storage Temperature Range 25 to 75ºC 13 to 167 F Figure 2 3 Low Field Axial Probe 2 5 ...

Страница 14: ...MODEL NUMBER YA111 CAVITY DIMENSIONS Length 50 8 mm 2 Diameter 8 7 mm 0 343 ATTENUATION 80 dB to 30 mT 300 G PURPOSE To shield the probe from external magnetic fields during the ZERO or RELATIVE operations Figure 2 4 2 6 ...

Страница 15: ...ic fields Be careful when operating the instrument near large magnetic fields as it may move without warning Do not connect the auxiliary power connector to an AC power source Do not exceed 5 Vdc regulated Do not reverse polarity Use only a regulated AC to DC power supply certified for country of use Figure 3 1 Auxiliary Power Connector Warnings Do not allow the probe to come in contact with any v...

Страница 16: ...RANGE operation press the RANGE pushbutton Press the UP 5 and DOWN 6 arrow pushbuttons to select ranges Press the RANGE pushbutton to return to normal operation Units To select UNITS press the SHIFT pushbutton followed by the LEFT 3 arrow pushbutton Press the UP 5 and DOWN 6 arrow pushbuttons to select flux density readings in gauss tesla or ampmeters Press the SHIFT pushbutton followed by the LEF...

Страница 17: ...he battery compartment cover 3 If using an AC to DC power supply review Figure 3 1 for safety notes and the SPECIFICATIONS section for voltage and current ratings 4 Install the probe by matching the keyway in the connector to that in the mating socket in the meter The connector will lock in place when fully installed To disconnect pull on the body of the connector not the cable Figure 3 4 Battery ...

Страница 18: ...because it indicates an intermittent problem that should be corrected If the self test is successful the meter will perform a self calibration During this phase the meter will display a calibration sequence CALX message Calibration will halt if there is no probe connected Until the probe is connected the phrase Err will appear accompanied by a flashing PROBE annunciator as shown in Figure 3 7 Per ...

Страница 19: ...e the meter is turned on The conditions that are saved are RANGE setting including AUTO range MODE AC or DC UNITS of measure gauss tesla or amperemeter OUTPUT function Other aspects are not saved and default to these conditions RELATIVE mode turned OFF RELATIVE value set to 0 ZERO mode inactive HOLD mode turned OFF 3 5 ...

Страница 20: ...ld be selected If already on the highest range then the flux density is too great to be measured with this instrument AC OR DC MEASUREMENT SELECTION The meter is capable of measuring either static DC or alternating AC magnetic fields To choose the desired mode Press the SHIFT pushbutton followed by the right 4 arrow to select AC or DC on the display The DC and AC mode is discussed in more detail l...

Страница 21: ...d if the reading reaches 95 of the present range The range is lowered when the reading falls below 9 of full scale for the present range The speed at which the readings are updated decreases slightly when AUTO ranging is used NOTE The AUTO range selection will be canceled if the RELATIVE mode is turned on To choose the desired range press the RANGE pushbutton The RANGE legend will flash Press the ...

Страница 22: ...olds the peak value of the flux density waveform within the response time capabilities of the meter See the SPECIFICATIONS section of this manual for more information The peak can be either positive or negative whichever has the greatest magnitude For instance a peak value of 100 0 is greater than a peak value of 90 0 To choose the desired hold mode press the SHIFT pushbutton followed by the RESET...

Страница 23: ... is 200 0 G and the present flux density is 100 0 G the meter will display 100 0 G after the reset If the analog output is being used the output signal will continue to represent the real time flux density as seen by the probe It is not affected by the HOLD function PEAK HOLD USAGE See the SPECIFICATIONS section for response time and accuracy information In the PEAK HOLD mode the input signal is s...

Страница 24: ...of equal magnitude with opposite polarity After zeroing the only dc signal that remains is that produced by the probe when exposed to magnetic flux NOTE Zeroing the meter and probe affects only the static DC component of the flux density signal NOTE The process of zeroing also affects the analog signal There may be situations when the user prefers to shield the probe from all external magnetic fie...

Страница 25: ...h The process normally takes from 5 to 15 seconds The meter selects the lowest range and adjusts the nulling signal until the net result reaches zero At this point the automatic process is terminated and the flashing AUTO and the ZERO icons will disappear If the nulling process is successful the next highest range is selected No further electronic adjustments are made but at this stage a reading i...

Страница 26: ...on during zeroing Recall that the zeroing operation affects DC offsets only If you wish to suppress an AC field reading consider using the RELATIVE mode By pressing the UP 5 or DOWN 6 arrows the reading will be altered Pressing the UP 5 arrow adds to the reading pressing the DOWN 6 arrow subtracts from the reading NOTE Making a manual ZERO adjustment not only affects the lowest range but also the ...

Страница 27: ...de can only be used in a fixed range If the AUTO RANGE feature is in use and the RELATIVE mode is turned on the AUTO RANGE feature is disabled Conversely if the RELATIVE mode is turned on and the AUTO RANGE feature is activated the RELATIVE mode is disabled 2 If the meter is in the RELATIVE mode and a ZERO function is selected either MANUAL ZERO or AUTO ZERO the RELATIVE mode is disabled There may...

Страница 28: ...value press the REL key The AUTO and RELATIVE icons will flash momentarily indicating the operation When complete the unit will return to the measurement mode and the RELATIVE icon will be on indicating that a relative value is being subtracted from all subsequent readings To deactivate the relative mode press the SHIFT key followed by the REL key Difference between ZERO and RELATIVE ZERO introduc...

Страница 29: ... the REL key to exit and return to the measurement mode The RELATIVE icon will be on indicating that a relative offset is being subtracted from all incoming readings In other cases the probe may be positioned in a stable DC or AC magnetic field that does not exceed the present range limit In most cases the reading will be adjusted to zero so that the value of the reference is subtracted from all i...

Страница 30: ...can be connected to a voltmeter oscilloscope recorder data logger or external analog to digital converter Power consumption increases when using the analog output If use of the analog output port is unnecessary maximize battery life by disabling the analog output feature To toggle the analog output on or off simply press the SHIFT key followed by the UP arrow key The ANALOG ON icon will turn on wh...

Страница 31: ...roduces the same output 1 23VDC The analog output can reach a maximum output of about 4 25VDC in order to accommodate the peak value of a 3VRMS AC signal This means that the analog output can be used to measure flux density levels that exceed the normal range of the displayed readings For instance a level of 31 5mT in the 30mT range would normally result in a flashing 29 99mT overrange condition H...

Страница 32: ...is best to select a fixed range that covers the expected flux density span The analog output signal contains both the DC and AC components of the flux density signal This means that it will also contain any initial DC offsets in the probe and the meter s circuitry These offsets can be removed by the ZERO function The ZERO function can also be used to introduce a DC offset if desired This is useful...

Страница 33: ...sensitive to the number of flux lines passing through it but also to the angle which the pass through it The Hall generator produces the greatest signal when the flux lines are perpendicular to the sensor as shown in Figure 3 22 The probe is calibrated and specified with flux lines passing perpendicularly through the Hall generator 5 As shown in Figure 3 23 the greater the distance between the mag...

Страница 34: ...of the meter This could cause the waveform to clip and introduce errors in the final reading This can also lead to an overrange condition on the display and can lead to erratic behavior if the AUTO RANGE feature is active The presence of a clipped AC signal can be verified by observing the analog output signal As stated in the SPECIFICATION section the accuracy of the true RMS reading is only guar...

Страница 35: ... be 20mT MORE DETAILS ON DC MODE OPERATION It is possible for the flux density signal to contain both a DC component and an AC component In the DC mode this can lead to unstable readings If the peak value of the AC component reaches the electrical limits of the meter even though the average DC level is within the limits an overrange condition may appear on the display This situation can also lead ...

Страница 36: ... standard also called IEEE 488 2 was one step toward creating a universal way to communicate with any instrument regardless of the manufacturer or the type of instrument used This was later enhanced by the SCPI1991 Standard Software Commands for Programmable Instruments which defined specific commands and responses that covered a broad range of applications Though these standards were targeted for...

Страница 37: ...at provides a 1 bit summary for each of the four register sets This is called the STATUS BYTE Each register set consists of three individual registers as depicted in Figure 4 3 next page 1 The CONDITION register is a real time read only register that is constantly updated to reflect current operating conditions 2 The EVENT register is fed by the CONDITION register but operates as a latch Whenever ...

Страница 38: ... arguments to be passed when calling a The USB ID number assigned when the device was opened initially the handle returned by openUSB5100 b The SCPI command string the text string for the desired command as given in the user manual Remote Operation and SCPI command sections c Pointer to the object where you want the response returned to this should be a pointer to a string variable d Maximum respo...

Страница 39: ...Usb5100 DLL exports many functions that actually do the USB connection and communication with the 5180 meter This is the DLL that provides the functions used by the Pacific Scientific OECO manufacturing test calibration system It calls functions that are exported by libusb0 dll The functions in this DLL should be able to be called by most higher level programming languages using the methods descri...

Страница 40: ...ts from the MEASUREMENT EVENT OPERATION EVENT STANDARD EVENT or QUESTIONABLE EVENT registers are set or if an error message exists The STATUS ENABLE register is a mask register that is used to allow any of these conditions to set the RQS bit Setting any bit in the STATUS ENABLE register to 1 will allow a corresponding 1 in the STATUS BYTE register to set the RQS bit These registers are depicted in...

Страница 41: ... QUESTIONABLE EVENT register set and their respective enable bits are set the Questionable Summary Bit QSB will set MSB Measurement Summary Bit If any of the bits in the MEASUREMENT EVENT register set and their respective enable bits are set the Measurement Summary Bit MSB will set EAV Error Available This bit sets any time there is an error message available in the error buffer RSQ Request For Se...

Страница 42: ...nication CME Command Error Indicates that there was a syntax or spelling error in the command or the command received is not supported EXE Execution Error Indicates that the meter detected an error while attempting to execute a command DDE Device Dependent Error Indicates that the meter did not operate properly due to some internal error OPC Operation Complete Indicates that all requested operatio...

Страница 43: ...er specifications are not guaranteed when the CAL bit is set MEAS Measure mode Indicates the meter is in the process of acquiring and processing a reading QUESTIONABLE EVENT REGISTER If any of these bits set and their respective enable bits are set the Questionable Summary Bit QSB will set in the STATUS BYTE ROF Reading Overflow Indicates that the present reading exceeds the present measurement ra...

Страница 44: ...follows a command it must be separated from the acronym by one space The parameter is the ASCII representation of an integer For instance if the parameter to be sent is binary 1100 the actual parameter sent would be the two ASCII characters 12 since binary 1100 decimal 12 If you were to send the four ASCII characters 1100 it would be interpreted as decimal 1100 eleven hundred 5 A number returned f...

Страница 45: ...4 10 ...

Страница 46: ... OPERATION COMPLETE QUERY Causes the OPC operation complete bit to set in the STANDARD EVENT register and returns an ASCII 1 when all commands have been executed OPT OPTION IDENTIFICATION QUERY Returns a string that identifies the model number and serial number of the Hall probe The model number will always be 12 characters in length including trailing spaces such as STD580404 Following the model ...

Страница 47: ...s that follow it For instance the command RESET can be shortened to RES c If the command has more than four letters and the fourth letter is a consonant drop all letters that follow it For instance the command MEASURE can be shortened to MEAS d If the command contains a question mark or a non optional parameter it must be included after the short form version For instance a query command of CONDIT...

Страница 48: ...ithin brackets in this document Brackets are not part of the actual command string An n parameter is a single ASCII digit NRf is usually a multiple digit number The meter supports a subset of the available SCPI commands However there are some functions that are not supported with standard SCPI commands In these cases these special commands are patterned after other SCPI commands that are similar i...

Страница 49: ...4 14 Table 4 2 SCPI Commands ...

Страница 50: ...ror indications The error message will provide more detailed information about the errors The error buffer can be read and cleared with the following commands SYSTem ERRor Returns the next error message and removes it from the error buffer SYSTem CLEar Removes all messages from the error buffer If the meter detects an error in the command string a spelling error a command that is not supported or ...

Страница 51: ...he same as binary 00101101 thus setting bits 5 3 2 and 0 in the enable register STATus MEASurement ENABle STATus OPERation ENABle STATus QUEStionable ENABle Returns the contents of the specified EVENT ENABLE register STATus MEASurement CONDition STATus OPERation CONDition STATus QUEStionable CONDition Returns the contents of the specified EVENT CONDITION register The EVENT CONDITION register is a ...

Страница 52: ... TESLa Specifies ac flux density readings in tesla UNIT FLUX AC AM Specifies ac flux density readings in ampmeters UNIT FLUX DC GAUSs Specifies dc flux density readings in gauss UNIT FLUX DC TESLa Specifies dc flux density readings in tesla UNIT FLUX DC AM Specifies dc flux density readings in ampmeters UNIT FLUX Returns an ASCII string representing the present mode setting for the meter The ASCII...

Страница 53: ...TO RANGE function SENSe FLUX RANGe n Selects a fixed range n where n 0 for 300 G 30 mT 23 88 kA m 1 for 3 kG 300 mT 238 8 kA m 2 for 30 kG 3 T 2388 kA m SENSe FLUX RANGe Returns an ASCII digit representing the present range setting for the meter as follows 0 for 300 G 30 mT 23 88 kA m 1 for 3 kG 300 mT 238 8 kA m 2 for 30 kG 3 T 2388 kA m 4 18 ...

Страница 54: ...HOLD function where n is a single ASCII digit as follows 0 All HOLD modes turned off 1 MIN HOLD on 2 MAX HOLD on 3 PEAK HOLD on SENSe HOLD STATe Returns an ASCII digit representing the present HOLD mode setting as follows 0 All HOLD modes turned off 1 MIN HOLD on 2 MAX HOLD on 3 PEAK HOLD on SENSe HOLD RESet This command resets the presently held reading 4 19 ...

Страница 55: ...turned on and an automatic relative operation is initiated SYSTem ARELative STATe Returns a single ASCII digit indicating the on off state of the relative function A 0 indicates the relative function is turned off A 1 indicates the relative function is turned on MEASUREMENT COMMAND This command acquires a new flux density reading MEASure FLUX This command returns the latest flux density reading Th...

Страница 56: ...rument s event and error registers then programming it to supply readings in tesla in the dc mode and requesting the latest reading The host system should be prepared to receive the reading immediately after transmitting this command string to the meter USING QUERY COMMANDS When any query command is issued the meter will send its response back immediately However if a query command is part of a mu...

Страница 57: ...equire a response The best way to handle all situations is to issue the OPC command once prior to sending any other commands This will cause the meter to always transmit an ASCII 1 each time it executes a command string If the command string contains one or more query commands the 1 will be appended to the end of the response separated by a semicolon For instance the response to the command string...

Страница 58: ...ernal meter problem Broken probe or meter problem 003 040 043 044 045 098 099 060 061 062 063 064 065 066 067 Invalid calibration data Probe EPROM read error Probe CRC failed Incorrect probe current Probe CRC failed Probe data timeout Calibration data timeout ADC error AD zero error PIC DSP com error DAC offset error Probe current error Output DAC error Amplifier gain error High input resistance M...

Страница 59: ...AND LIABILITIES ON THE PART OF PACIFIC SCIENTIFIC OECO AND NO PERSON INCLUDING ANY DISTRIBUTOR AGENT OR REPRESENTATIVE OF PACIFIC SCIENTIFIC OECO IS AUTHORIZED TO ASSUME FOR PACIFIC SCIENTIFIC OECO ANY LIABILITY ON ITS BEHALF OR ITS NAME EXCEPT TO REFER THE PURCHASER TO THIS WARRANTY THE ABOVE EXPRESS WARRANTY IS THE ONLY WARRANTY MADE BY PACIFIC SCIENTIFIC OECO PACIFIC SCIENTIFIC OECO DOES NOT MA...

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