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FOR
9152 SERIES
STANDARD CELL ENCLOSURE
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Modern Electronic M etrology
TECHNICAL MANUAL FOR 9152 SERIES STANDARD CELL ENCLOSURE
GUILDLINE INSTRUMENTS
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TABLE OF CONTENTS Para. Page
SECTION 1 - GENERAL DESCRIPTION
1.1 1.2 1.3
Scope General Description Specifications SECTION 2 - OPERATING INSTRUCTIONS
1-1 1-1 1-1
2.1 2.2 2.3
Installation Controls and Indicators Operating Notes SECTION 3 - MAINTENANCE
2-1 2-1 2-2
3.1 3.2 3.3
Preventive Maintenance Certification of Cell EMF's Corrective Maintenance SECTION 4 - PRINCIPLES OF OPERATION
3-1 3-1 3-2
4.1 4.2 4.3 4.4 4.5 4.6
Introduction Temperature Sensitive Oscillator Amplifier and Detector Heater Driver Overtemperature Circuit Power Supply SECTION 5 - DRAWINGS
4-1 4-2 4-2 4-3 4-3 4-4
(i)
LIST OF ILLUSTRATIONS
SECTION 2 - OPERATING INSTRUCTIONS Front Panel Controls and Indicators SECTION 4 - PRINCIPLES OF OPERATION Heater Control Unit Temperature Sensitive Oscillator Amplifier and Detector Heater Driver Overtemperature Circuit Power Supply
LIST OF TABLES
SECTION 3 - MAINTENANCE Control Circuit Board Testing Transistor Voltages
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SECTION 1 GENERAL DESCRIPTION 1.1 SCOPE This manual contains operating and service information for the Guildline Instruments Model 9152 series, STANDARD CELL ENCLOSURE. using common test equipment. 1.2 GENERAL DESCRIPTION The Model 9152 STANDARD CELL ENCLOSURE consists of a multi walled insulated chamber, the internal temperature of which is maintained by a patented solid state control system at 30 ± .01°C. saturated standard cells. The design assures minimum thermal gradients within the inner chamber containing the The cells are immune to inversion, normal Provision is made shock and vibration in commercial carrier shipment. failure or for use during transportation. It is intended for personnel who are familiar with EMF standards and service techniques
for connection of an external 12 volt battery as back up in case of mains Portable versions have a Formica case with the cell connections and calibration card on top; these are on the front panel with the other controls in the 19" rack-mount version, 9152/R4. 1.3 SPECIFICATIONS EMF STANDARDS: Four or twelve invertible saturated standard cells (1.0181 + volts) with porous septa. pairs. EMF LIMIT OF ERRORS: Guildline test report supplied to ± 2uV for each cell, traceable to the legal standard of voltage as maintained by NRC and NBS, may be sent to NRC (or NBS, U.S. customers only) for a report to ±lyV or better. Connections accessible at isolated, unplated copper terminal
1-1
INTERNAL TEMPERATURE: TEMPERATURE REGULATION:
30°C Nominal (except special order). Within ±0.003°C for 24 hours over ambient
J
of 18 to 28°C for line or battery operation. TEMPERATURE STABILITY: Better than 0.01°C from nominal for a period of five years. TEMPERATURE MONITORING: External null detector (not furnished), connects via front panel terminals to internal thermistor bridge. Monitors chamber stability to ±0.0019C. OVERTEMPERATURE PROTECTION: Bimetallic sensor shuts down control circuit and activates OVERTEMP indicator on the front panel when the inner chamber temperature exceeds 34°C ± 2°C. FRONT PANEL INDICATORS: HEATER ON lamp AC ON lamp OVERTEMP lamp RATED AMBIENT TEMPERATURE RANGE: POWER REQUIREMENTS: +18°C to +28°C continuous 115 or 240 volts ac ± 10%, 50/60 Hz, 15 watts, or 12 volt battery at 0.4A. DIMENSIONS (WxDxH) and WEIGHTS: 9152/4: 9152/12: 41 x 25.5 x 29.5 cm (16 x 10 x 11.5 inches) 57.5 x 25.5 x 29.5 cm (22.5 x 10 x 11.5 inches) 21 kg (46 lbs) 9152/R4: 48.5 x 34 x 31.5 cm (19 x 13.1 x 12.15 inches) 10.8 kg (24 lbs)
SECTION 2 OPERATING INSTRUCTIONS 2.1 INSTALLATION Place the instrument on a vibration-free bench. of the enclosure. Connect the line cord to
a 115V or 230V, 50/60 Hz outlet as indicated on the nameplate at the rear The amber AC ON lamp should light, together with the green HEATER ON lamp. When the inner chamber containing the standard cells reaches its operating temperature the HEATER ON lamp will indicate periodic cycling. the standard cells to the operating temperature. before measurement or use. 2.2 CONTROLS AND INDICATORS (See Figure 2-1) HEATER ON: A green lamp is provided to indicate periodic cycling of the heater (1). POWER ON: Indicated by an amber light on the front panel (3). OVERTEMP: A red lamp indicates when the internal temperature has exceeded 35 ° (2). C This may occur when the unit is operated in an ambient in excess of the operating temperature, or in the event of control failure. BRIDGE ON: This switch energises the temperature deviation bridge (8). DEVIATION C° : This control 1s the balancing arm of the temperature deviation bridge (9). It is calibrated to indicate deviation
\
Due to the
thermal lagging it will take several hours to raise the inner chamber and The standard cells should be allowed to stabilise at the operating temperature for at least ten days
from the normal operating temperature and has a range of ±0.02 C° .
2-1
f
GA:
These terminals are for connection of an external galvanometer to indicate balance of the temperature deviation bridge (6) (7).
STANDBY:
These terminals are for the connection of a 12V battery to maintain temperature in the event of line supply failure or during transportation (4) (5).
STANDARD CELL TERMINALS;
Pairs of low thermal EMF copper binding posts are mounted beneath a draft cover on the cabinet top. Connections from the standard cells are brought to these terminals which are separated from each other with material of high insulation properties.
GND:
On the top of the cabinet a terminal is provided which is connected to the thermal enclosure. This allows for special grounding, if required.
2.3
OPERATING NOTES Connection to standard cells - connection to the cell terminals should be made with solid copper wire having low thermal EMF characteristics. wires to each pair of standard cell terminals should be twisted and preferably shielded to avoid spurious pick-up. Wire or equivalent. Use Guildline Type SCW The certified EMF of each standard cell and the date The
of certification is indicated on the label mounted on top of the cabinet. Monitoring of the Internal Temperature - the temperature deviation bridge is used to measure difference in internal temperature from the temperature at the time of calibration. Connect a galvanometer having a sensitivity of Switch the about 2000 mm/pA to the GA terminals and adjust the zero. galvanometer.
bridge ON and adjust the DEVIATION C° control for no deflection on the The temperature deviation can then be read from the dial.
2-2
An electronic detector may be used Instead of a galvanometer. should be connected to the detector ground. The bridge should be switched off when not in use. CAUTION:
If 60 Hz
pick-up at the GA terminals 1s a problem the enclosure GND terminal
If the enclosure is grounded via the GND terminal, the 12V standby supply must be isolated from ground, otherwise the heaters will be disabled.
1-HEATER ON INDICATOR 2-OVER TEMPERATURE INDICATOR 3-A.C. ON INDICATOR 4-STAND BY 12 V NE6. TERMINAL 5-STAND BY 12 V POS. TERMINAL 7-GALVANOMETER TERMINALS 8-BRID6E O N /O F F SWITCH 9-DEVIATION DEGREES CONTROL
FIGURE 2-1 FRONT PANEL CONTROLS AND INDICATORS
SECTION 3 MAINTENANCE 3.1 PREVENTIVE MAINTENANCE CLEANING - The instrument requires very little maintenance other than periodic dusting of the outside of the cabinet. Use alcohol to clean around the standard cell terminal to avoid formation of leakage paths. TEMPERATURE - Check the internal temperature with the temperature deviation bridge before using the cells as references and otherwise periodically. Compare the dial reading with the nominal deviation given on the Calibration Certificate. CELL STABILITY - Special equipment is required to perform this test: a) Potentiometer having ±100yV Range and O.lyV Resolution; eg. Guildline Model 9176G, 9160G, 9930, 9936, 9932 or equivalent. b) Detector for Potentiometer, Sensitivity 30,000 mm/yA; eg. Guildline Model 9460A, 9461B or equivalent. Connect a potentiometer to measure the difference in EMF between any two cells. remainder. Measure the difference in EMF between cell #1 and the Compare these figures with the differences calculated from Changes greater than one
the figures on the Calibration Certificate. a fault has developed.
or two microvolts indicate that recertification may be required or that Periodic certification is necessary to ensure accuracy of the cell EMF figures^as all may change in the same direction. 3.2 CERTIFICATION OF CELL EMF's If the voltage of the standard cells is to be determined by direct comparison with a national standard of voltage such as maintained by the Canadian National Research Council or the U.S. National Bureau of Standards, the comparison should be made with the cells inside the enclosure at operating temperature. THE CELLS AND ENCLOSURE SHOULD BE TRANSPORTED After transportation, or if the enclosure WITHOUT REMOVAL OF THE CELLS.
has" been allowed to cool, the cells should be allowed to stabilize at
3-1
operating temperature for at least 10 days before measurement or before use. The enclosure can be expected to achieve operating temperature after cooling, within approximately 48 hours. The enclosures can be maintained at operating temperature during transportation by connection of the "STANDBY 12V" terminals to a 12V battery or to a car cigarette lighter socket. operate with polarity reversed. Connection of the 12V supply in the wrong polarity cannot damage the unit but it will not After connection of the 12 volt supply It has been occasionally found This is due to electrical noise Should this difficulty check that the "ON" lamp is cycling.
that the instrument, when connected to the cigarette lighter, will not switch OFF while the engine is running. imposed by the generator on the 12V D.C. supply. the 12V terminals. 3.3 CORRECTIVE MAINTENANCE
occur it can be overcome by connecting a 4000 yf 25V capacitor across
3.3.1 PRELIMINARY CHECKS Check POWER ON lamp - this should be lit when the instrument is connected to AC line. not lit. If not check the lamp and either of the other lamps that is Also check the power outlet.
Check the HEATER ON lamp - it should indicate the cycling on and off of the heater. Check the OVERTEMP lamp. If it is lit the fuse FI is blown. It may have
been a defective fuse or the temperature inside the enclosure has exceeded 35 C° either from a high ambient temperature or failure of the control , circuit. a) Proceed to para. 3.3.4. Check the internal temperature by: compare the dial
using the temperature deviation bridge:
reading with the Nominal Deviation on the Calibration Certificate, or b) comparing the standard cell EMF1s with a known standard. The
temperature coefficient of the standard cells is e -50pV/C°. A general change in the EMF's of all the cells indicates a shift of the internal temperature of the enclosure.
3-2
NOTE:
Standard Cell EMF must be measured with special equipment as listed in para. 3.1,
Symptoms appear at the beginning of each of the following paragraphs as a guide to detailed fault location. for the PRINCIPLES OF OPERATION. 3.3.2 TEMPERATURE CONTROL If the temperature is low and the HEATER ON lamp is lit, check the continuity and resistance of the heater circuit. for details. If the temperature is low and the HEATER ON lamp is lit, check the operation of the control circuit as follows: Locate R1 connected from pin to pin of P2. See dwg. 16555.01.04 Refer to Section 4 of this manual
Short out Rl, and the HEATER ON lamp should light; if not, check for a fault in the control circuit; if the lamp lights, check the resistance of Rl and the thermistor RT1. Rl should be 1.5 - 2.5 ohm. RT1 is equal to Rl at 30°C, or higher if the temperature is less than 30°C; it has a temperature coefficient of = -4%/C°. and RT1 as a matched pair. Control circuit board testing - measure the voltage at the pins of connector PI as indicated in TABLE 1. * TABLE 1 - CONTROL CIRCUIT BOARD TESTING PIN 20 21 7 9 10 12 14 (19 3-3 and PIN 16 16 16 7 7 7 7 7 should read 15.0 V 15.0 V 60 Hz 60 Hz components to check T1 T1 CR106, CR107 see NOTE 1 see NOTE 1 see NOTE 1 when heater off when heater on: see NOTE 2 standby supply) If necessary, replace Rl
-12 V D.C. -3.2 V -3.2 V -3.2 V = -0.3 V -0.7 V -12 V
NOTE 1:
If this reading is incorrect check the voltage across C101, 500 pf capacitor - it should read 8.2V C103 and Q101.
5%; if not, check
R107, CR101, CR102 and C101; if correct, check RI02, R105,
NOTE 2:
If this reading is not obtained, check Q7.
Check the operation of the temperature sensitive oscillator; if the resistance of RT1 is greater than the resistance of Rl, the oscillator should be running; check with an oscilloscope between TPl (coll of Q102) and Jl-7. components; Waveform should be as shown, if not check the following
Q101, Q102, C104, T101, C102 TPl 5V R103, R125, R104, R110
If oscillation is observed, check between TP2 (coll Q103) and Jl-7. Waveform should be as shown, if not check the following components:
^ TP2
___ i
F 3V 3V
Q103, C106, Rl 17, R 112, R106
3-4
If this waveform is observed, measure the D.C. voltage between TP3 (CR104 Anode) and Jl-7. R122 and R114. * Indicated waveform typical if RT1 1s at ambient temperature of about 25 C° . As a further guide to trouble shooting, typical D.C. voltage at the transistor terminals are given 1n TABLE 2. TABLE 2 - TRANSISTOR VOLTAGES DEVICE -3.2 -5.2 -3.05 CM
1
It should read >-2.5 volts.
If not, check
C105, C107, CR103 and CR104.
If it is correct check Q104, Q105,R121,
VOLTAGE READINGS (Jl-7 Common)
HEATER O N E E HEATER OFF
-3.2 -5.2 -3.05 --Variable---
Q101 Q102 Q103 Q104 Q105
Q7
-3.05 -5.4 -2.95 -1.4 1 0
-5.2 -3.05 -5.3 -1.45 -1.45 -.25
-3.05 -5.4 -2.95
-5.2 -3.05 -5.3
-1.42 I
0
= -.25
-12.8
3.3.3 TEMPERATURE DEVIATION BRIDGE If the temperature of the enclosure is normal as indicated by the standard cell EMF measurement and the bridge cannot be balanced, the resistances of thermistor RT2 and resistor R13 should be measured. at pins L and of P2, and R13 at pins and J of P2. should be equal. as a matched pair from the factory. to recentre the DEVIATION control. Disconnect the The resistances line cord from the supply, unplug P2 from the chassis, and measure RT2 If the difference exceeds 3 ohms, procure RT2 and R13 A smaller difference may be compensated This will establish a new figure for If RT2 and R13
for by readjustment of R16, a trimpot located on the printed circuit board, the NOMINAL DEVIATION given on the Calibration Certificate.
have the same resistance, check R108, R109, Rill, Rl18 and R120.
\
3-5
I
3.3.4
OVERTEMPERATURE - lamp lit Allow the enclosure to cool to less than 30°C. of R26 (2.2 f ) i. sensitive switch S2 is open. Check the resistance
Check between P2-E and P2-F to ensure temperature If these conditions are satisfied, replace Monitor the increase If the lamp does not indicate
fuse FI and check that the HEATER ON lamp is lit. in temperature with Deviation Bridge. of the control circuit as follows: Locate pins A and of P2.
heater cycling when the temperature approaches normal, check the operation
Short pin A to pin B; the HEATER ON lamp should go out. as a matched pair.
If it does,
check the resistances of RT1 and Rl as detailed in para. 3.2.2, replace If not, check at TPl and TP2 with an oscilloscope Refer to TABLE 2 for voltage (common to Jl-7) - with P2-A and P2-B shorted there should be no oscillation. Check the voltage at TP3 - it should be zero. measurements to aid in locating the fault in the heater driver. 3.3.5 REPLACING A STANDARD CELL Disconnect standby power supply battery and unplug line cord while working on the unit. 1. Remove 4 screws from the left hand end of the cabinet, (from the back of 9152R). 2. 3. Remove the insulation pad. Remove 3 screws holding end plate of outer barrel, (note the position of identification mark) and the solder lug under one screw. 4. 5. Remove the insulation pad. Examine the layout of the wiring. Note that all wiring makes a full
turn inside the cavity before making connections to the end plate heater or entering the Inner chamber. 6.
Y "
\
Unplug the connectors to the end plate heater and the overtemperature switch. Note wire colours and locations.
7.
Remove 3 screws holding the aluminum end plate on the second barrel and remove the end plate (note the ground wire to a solder lug under one screw, and another solder lug used to retain the cables in place). 3-6
8.
Remove 3 screws securing the end plate to the inner barrel, and remove the end plate. (Note the position of the slot, and the ground wire to the solder lug under one screw).
9. 10. 11.
Note the position of the cell wiring, and that the terminal board is horizontal. The cells enclosed in foam may now be withdrawn from the inner barrel. Remove the moulded foam, and replace the defective cell. care to avoid shorting the cells. (NOTE: Cells may be identified by position and by serial number. Cell is closest to the left hand end of the terminal board, where the wiring enters). #1 Take special
12. 13. 14.
Replace the moulded foam and tape the two halves together. tab to facilitate removal from the barrel.
Leave a
Slide into the inner barrel, taking care to avoid damaging the thermisl wiring. Position the cells with the terminal board horizontal. Re-assemble the enclosure following the dismantling procedure in rever; Ensure that no wires are trapped between the end plates and the barrel.' or under screws during assembly.
The unit may now be plugged in and connected to the standby supply. Monitor the operation of the temperature control to ensure that the heater is cycling normally when the correct temperature has been reached. The new cell will require time for its potential to stabilize due to shakii up in transit and handling.
V'
V
3-7
SECTION 4 PRINCIPLES OF OPERATION 4.1 INTRODUCTION The heater control unit in the Model 9152 enclosure consists of the following functional blocks. a) Temperature Control - consisting of a sensor, oscillator, amplifier, detector and heater. b) Temperature Monitor - consisting of a sensor and a resistance bridge. c) d) Overtemperature Circuit Power Supply
FIGURE 4-1 - HEATER CONTROL UNIT
4-1
4.2
TEMPERATURE SENSITIVE OSCILLATOR
FIGURE 4-2 - TEMPERATURE SENSITIVE OSCILLATOR Temperature changes are sensed by the thermistor RTl connected with Rl. across the 1:2 ratio autotransformer TlOl. the base of Q101. As the temperature decreases, the thermistor resistance increases and the voltage divider output to As soon as this voltage exceeds half the transformer output the circuit gain becomes greater than one and oscillation occurs. 4.3 AMPLIFIER AND DETECTOR
FIGURE 4-3 - AMPLIFIER AND DETECTOR The output of the oscillator is amplified by Q103 and rectified by a vtaltage doubler consisting of C105, CR103, CR104 and C107. R115 gives current limiting protection for the next stage. The resistor
4-2
4.4
HEATER DRIVER
FIGURE 4-4 - HEATER DRIVER The voltage across C107 causes base current 1n the emitter follower Q104 which in turn drives another emitter follower Q105. current. This produces base current to switch on transistor Q7 which controls the heater The resistors R119, R121 and R122 ensure that Q7 1s not conducting when there is no output from the oscillator. 4.5 OVERTEMPERATURE CIRCUIT
TO HEATER
FROM POWER SUPPLY
FIGURE 4-5 - OVERTEMPERATURE CIRCUIT If thev temperature in the enclosure exceeds 35 C° switch S2 closes. , The load provided by R26 is sufficient to blow the fuse FI and disconnect all power to the heater.
4-3
POWER SUPPLY
FIGURE 4-6 - POWER SUPPLY A universal power transformer T2 which allows for operation of the instrument from 115 or 230 volts, 50 or 60 Hz, feeds a full-wave rectifier. and C101. The heater 1s fed from the unregulated output and the control circuit is fed from a regulated consisting of R107, CR101
SECTION 5 DRAWINGS Number 15179.01.06 15177.01.06 13858.02.02 13858.02.02 16555.01.04 16555.01.02 16556.01.02 16555.01.15 Title Front Panel Component Location Main Chassis Component Location Temperature Control PCB Parts List Temperature Control PCB Assembly General Schematic General Assembly Parts List Front Panel Assembly Parts List Standard Cell Enclosure Bill of Materials
FRONT PANEL COMPONENT LOCATION SERIES
JUL HEATER
RT2 RTI
W
V
RI3
NOTE: RTI,RT2,Rl3 ARE IN CONCENTRIC CHAMBER
TOP VIEW
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COMPONENT LOCATION MAIN CHASSIS 9152 SERIES
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R 105 I R 102 1.5 103 R 124 I
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NOTE : Q 101 , Q102 , Q103 , QI06 PADS T O - 0 0 5 ARE MOUNTED ON
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R 119 R 1 S' 1 4 7
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J * GUILDLINE INSTRUMENTS LTD.
SMITHS FALLS ONT. < CANAQA 1£
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REVISION S
B ARR EL No.2 BOTTOM 8& HTR.
HEATER CONNECTIONS;
9152/4 9152/12
SHOWN ABOVE SHOWN BELOW
T2 230V
CONNECTIONS 5 0 / 6 0 Hz
9152/12 9152 / 4
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Printed Circuit Board Transistor Transistor Transistor Diode Diode Diode 40V Capacitor 47uf 25V Capacitor lOOuf Capacitor lOuf 35V 40V Capacitor 470uf . Capacitor,Tant lOOuf 20V IK Variable Resistor 0 .1 % Resistor 700 ohm Resistor 800 ohm 0.1% Resistor 4.99K 1% Resistor Carbon 1W 100 ohm Resistor Carbon 560 ohm Resistor Carbon g-W IK Resistor Carbon - g W 2.2K .7 Resistor Carbon ^-W Resistor Carbon - g W 47K Resistor Carbon - § W 100 ohm Resistor Carbon -^W 330 ohm Resistor Carbon -4 -W 1.5K Resistor Carbon |-W 82K Resistor Carbon -g W 12 ohm Transformer Transistor Pad
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Q102 0101,103 0104,105 CR105,106,107,102 CR103,104 CR101 C103,107 C102 10506 C101 C104 R118 Rill R109 R120 R107 R114 R105,121,122,124 R106,117,103 R115 R119 R112 R104,110 R102 R108 R125 T101
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Capacitor, Elect. Transistor
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C108 Q106
PARTS
TITLE
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DWN CHK CHK [ r e v
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ECN DWN CHK CHK REV ECN
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DWN CHK CHK
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LIST NUMBER
16555.01.02
SHEET D A TE 2 CHKD 1 OF 1 APVD SH EETS
MODEL
R E V ITEM 1 2 3* 4* 5 6 7 8* 9 10* 11 12 13* 14 15 16 17 18* 19 20 21 22 23
9152/4, 9152/12
description
JLM. _D_ 1764- - 1339 _LM, " Q T Y CODE 1 1 2/3 4 1 1 1 4 2 1 A/R 1 1 1 1 1 1 1 2 1 1 A FS FS FS FS FS FS FS MANUFACTURER Guildline Guildline Guildline Guildline Amphenol Guildline Guildline Guildline Guildline Guildline Cambion Guildline Buss FS FS FS FS FS Guildline Guildline Guildline Guildline Guildline Guildline PART NUMBER
^ 1 2 /80 DWN
LM
CIRCUIT R E F
E F F E E F BC BC DC D E E E E E E
Front Panel Assembly Barrel Assembly Foam Cell Holder Standard Cell Plug THMS/RES Set - Bridge (30°C) THMS/RES Set - Control PCB (30°C) Foam Insulation (with hole) Foam Insulation Formica Spacer Delete Terminal Pins Ticket Window Resistor, carbon 1/2W 2.2 5% Fuse, 1 Amp Fast Blow Cable Clamp, 3/16" Cable Clamp, 1/4" Foam Insulation Foam Insulation Foam Insulation Foam Insulation Foam Insulation Cabinet *For 9152/12 Read:
16556.01.02 16557.01.02 17146.01.10 Model 9153 143-015-01 17745.01.02 17746.01.02 11069.01.10 11069.02.10 10231.01.10 1785-02-01-00 10030.01.10 AGC-1 N3B N4B 17715.01.10 17717.01.10 17718.01.10 17719.01.10 17720.01.10 16548.01.24
P2 Rt2 & R13 Rtl & Rl
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FI
3 4 13 8 10 18
Foam Cell Holder Standard Cell Ticket Window Foam Insulation (with hole) Formica Spacer Foam Insulation
2 12 1 8 2 1
FS FS FS FS FS
Guildline Guildline Guildline Guildline Guildline Guildline
17146.01.10 Model 9153 10030.02.10 11069.01.10 10231.01.10 17716.01.10
PARTS
TITLE
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LIST
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DWN CHK ,T K
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Front Panel Assembly
MODEL
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FAM TREE KEY LIST NUMBER
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SHEET 1
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SHEETS
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a
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1 2 3 4 5 6 7 8 9 10 11
Front Panel Harness Temperature Control PCB Lamp Lamp Lamp Transistor Grommet Solder Tag Delete Mains Cord Transistor Kit
1 1 1 1 1 1 1 1 1 1
FS PCB PS PS pa PS PS
Guildline Guildline Dialight Dialight Dialight Ontario Rubber Belden Keystone
14069.01.03 13858.02.02 507-3917-1471-600 507-3914-1472-600 507-3917-1473-600 2N3741 224 #6 17238 4726
DS2 DS1 DS3 Q7
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BILL OF MATERIALS TITLE
R EV ECN
GUILDLINE INSTRUMENTS LTD.
DWN CHK CHK R EV ECN DWN CHK CHK REV ECN DWN CHK CHK
FAM.TREE KEY BILL NUMBER
ms
SHEET DATE 1 OF DWN APVD 1
REF
Standard Cell Enclosure
MODEL
E >
1138 LM >V¥? 126 t h '
SH EETS
--------- ---------- ---- v*--------------------------------------------------
9152/, 9152/12
ECN ITEM
DESCRIPTION
(MODIFICATION) QTY
MANUFACTURER
12- 7 1 CHKD/^ PART NUMBER
Ln i O --------REF
1*
2
3 A 5
6
7 8
Transformer 6 Pos. Chocolate Block Fuse Holder Potentiometer Toggle Switch Lamp Holder Binding Post Binding Post
1 1 1 1 1 3 1 1
Hammond G.E.C. Henley Littlefuse Centralab Cutler Hammer Dialight Superior Superior
59826 C7039P 3823-1 HMS-100 ohms 8280K16 508-7538-50 DF21BC DF21RC
T.2 TB1 FI R16 SI DS1,2,3 El E2
* For
9152/12 Read! Hammond 116557 T2
Transformer