8 GFS35Z Zeeman Furnace Accessory

8/10/2019 8 GFS35Z Zeeman Furnace Accessory

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Page 1 of 27 iCE 3000 Technical Support Manual Version 0.5

Chapter 8

GFS35Z Zeeman Furnace Accessory


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1 INSTALLATION..............................................................................................52 Circuit Description........................................................................................6

2.1 Safety and DC Supply Sensing Section............................................... 62.2 Magnet Over-temperature Sensing ......................................................72.3 Magnet Open Sensing ...........................................................................7

3 Test Points.....................................................................................................7

4

CHANGES TO THE POWER SUPPLY .......................................................... 85 GFS352 Zeeman Electronics Set-up Procedure ....................................... 22

6 Zeeman Furnace Head Clamp Force Setting ............................................ 27


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GFS35Z Zeeman Furnace

1 INSTALLATION

Installation of the Zeeman Furnace System

Initial Inspection

Check the contents of the shipment against the packing list supplied. If the

contents are incomplete, or damaged, a claim should immediately be filed with

the carrier. Thermo Fisher should be notified of any damage and of any items not

supplied in order to facilitate repair of replacement.

Installation of the ZEEMAN Head in the Spectrometer

Lower the complete head and magnet assembly into the sample compartment

from the rear of the spectrometer. Engage the front support onto casting and retain

with two fixing screws. The complete head assembly should now be able to swing inand out of the optical path.

Furnace Head Alignment

With the furnace head assembly tilted forward, fit and align a hollow cathode

lamp. Swing the complete head assembly back into the optical path and use the

horizontal and vertical furnace head adjusters to set the head in the correct position

using the cuvette jig for final adjustment.

GFS35Z Zeeman furnace head - general view


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2 Circuit Description

-30 0 30 60 90 120 150 180 210 240 270 300 330 360 390

Signal phase (degrees)

Simplified timing diagram of mains voltage, lamp periods and

Zeeman magnet current waveforms

2.1 Safety and DC Supply Sensing Section

There are a number of sensing circuits included to provide safety to the operator,

and to the hardware. These are as follows

Magnet over-temperature sensing.

DC supply sensing.

Current limit.

Magnet open sensing and Z Sync too long.


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2.2 Magnet Over-temperature Sensing

Each coil of the Zeeman magnet has a P.T.C. (positive temperature coefficient)

thermistor embedded in the winding to sense the temperature of the winding. The

thermistors have a nominal resistance of 1000 ohms at 100C. Each thermistor is

connected to a bridge circuit. If the resistance of either sensor goes above 1000 ohms,

then a magnet over-temperature signal will immediately switch OFF the magnet

drive. An open-circuited sensor will also result in an error signal.

If either sensor goes short-circuit (this will also show an error signal).

Either sensor can be disabled by the removal of link LK1 or link LK2, as

appropriate. However, this should only be used as a fault-finding aid or as a

temporary 'stopgap' in the event of the failure of a sensor.

WARNING: If both links are removed the magnet coils could overheat and be

permanently damaged if a fault condition occurs or if a high duty-cycle

furnace program is being used.

2.3 Magnet Open Sensing

The magnet is formed from two halves which can be hinged open to allow the

furnace center block to be removed. It could be extremely dangerous if the magnet

were energized in the open position, causing the two halves to close suddenly. This

could injure an operator, or damage the magnet. The position of the magnet halves

is detected using an opto-interrupter. When the magnet is open, an error output isgenerated which will inhibit the magnet drive.

3 Test Points

TP1 Magnet Over-temperature error signal

TP2 D.C. Power Supplies error signal

TP4 Current Limit error signal

TP5 +5V supply

TP6 GND

TP7 +15V supply

TP8 0V(15)

TP9 -15V supply

TP10 +24V supply

TP11 Vref (+5.00V)

TP12 IMAG (4 volts represents 44 Amps magnet current)

TP13 Magnet Open error signal

TP14 VDAC (Ramp Control DAC output voltage)


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4 CHANGES TO THE POWER SUPPLY

Special 200/208V Versions

Some Furnace Power Supplies are fitted with an additional Auto transformer toallow the magnet to run at 200 or 208 watts. This transformer is located in the

Furnace Power Supply.

200/208V version - auto-transformer wiring


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4 - DIAGRAMS

Polariser


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Zeeman components in GFS35Z


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. Magnet pcb


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Item Part Number Description

2 4013 172 78591 RH ELECTRODE ASSY

3 4013 172 78621 LH ELECTRODE ASSY

4 4013 172 78631 CLAMP PLATE ASSY5 4013 172 78641 SHAFT ASSY - HANDLE

6 4013 172 78651 HEIGHT ADJUSTMENT ASSY

7 4013 166 83771 LEADSCREW HEAD

8 4013 166 83761 LEADSCREW

10 4013 166 83781 SAMPLE SLEEVE

11 4013 166 83561 SHROUD

12 4013 168 58231 WINDOW 09X1

13 4013 166 83791 9 DIA WINDOW HOLDER

14 4013 166 81431 TUBE CLIP-PAINTED

15 4013 166 84151 COVER

17 4013 166 83551 CONE LH

19 4013 172 75572 WINDOW HOLDER - INSULATED20 4013 168 56822 WINDOW 15.5MM DIA X 1MM

22 4013 166 83801 COLLAR-SPRING

23 4013 166 81501 SEAL

24 4013 166 83811 GASKET - LH ELECTRODE

25 4013 166 83821 DOWEL

26 4013 166 83831 DOWEL - FLATS

28 4013 166 81441 DOWEL 3MM - INSULATING

30 4013 167 06021 FURNACE MAIN FRAME

31 4013 166 83582 MAGNET

32 4013 166 83611 RESILIENT MOUNT

34 4013 166 83851 SHAFT - MAGNET PIVOT

35 4013 166 83861 LATCH36 4013 166 83871 LATCH PILLAR

37 4013 166 83881 SENSOR BRKT

38 4013 166 83891 SENSOR FLAG

40 4013 166 83901 ADJUSTER SCREW

41 4013 166 83911 LINK ARM INNER

42 4013 166 83921 LINK ARM OUTER

43 4013 166 83931 LINK ARM PIN

44 4013 166 83941 TRUNNION NUT

Zeeman Furnace Assy.


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49 4013 166 83981 RETAINING STRAP

50 4013 166 83991 CLAMP BAR

51 4013 166 84001 LEAD

52 4013 172 78801 CONDUIT DUCTING

53 4013 166 83521 RETAINING ROD - CONDUIT

54 4013 166 68751 EXTENSION PIECE

60 2922 014 04106 TUBE NIPPLE FOR 4X1 TUBE61 2913 003 98058 T CONNECTOR POLYPROPYLENE

64 4013 228 41661 BEARING DU-B 06 10

66 4013 228 41671 O RING 2,4 SECTX19,6 I/D

67 4013 228 41681 O RING 2,4 SECTX13,6 I/D

68 4013 221 90121 RST TDR MOXIE 75C

75 4013 172 50782 SLOTTED OPTICAL SWITCH ASSY

76 2613 008 00179 BEAR BUSH 6X10X10

78 2613 008 02206 OILITE BEARING FCM8X10MM

79 4013 231 55002 HANDLE 42MM M6

80 2522 401 09013 HEX NUT DC STL ST M6

81 4013 231 55001 KNURLED KNOB M8 BLACK

82 2522 401 09012 HEX NUT DC STL ST M5

85 2413 015 11078 CABLE CLIP BRASS

87 0813 108 98081 TYGON TUB 3/16 IDX5/16 OD

88 0813 108 98082 TYGON TUB 1/16 IDX3/16 OD

90 0313 055 98053 BRAIDED SCREENING 20MM

91 4013 223 00005 CONDUIT FLEX 35ID

92 4013 223 00003 CONDUIT STRT FITTING 35ID

93 2522 032 02652 HEX BOLT BR NI M8X16

94 4013 172 78671 CONDUIT CABLEFORM

95 4013 172 78681 CONDUIT EARTH LEAD

96 4013 172 78691 CENTRE BLOCK EARTH LEAD

97 4013 172 78711 RH ELECTRODE EARTH LEAD

98 4013 172 78721 MAGNET CLAMP EARTH LEAD

99 4013 166 84061 SPRING-CUVETTE CLAMP

101 4013 228 42471 CAP 25I/DX6 LG PVC

102 4013 228 42461 LENS KBX 022

103 4013 228 42451 LIGHT GUIDE LG5 (O/FIBRE)

104 2613 080 30267 O RING 0.437INX0.070IN

105 2813 030 98045 PVC FOOT GY

106 4013 166 84081 SHAFT -RH ELECTRODE

107 4013 228 42481 PIN SPRING STL ST 4X20

109 4013 166 83721 CRANK ARM PIN

110 4013 166 84101 CURVED WASHER PAINTED

111 4013 223 02091 ACC FIX PCB MNI-M3-2.5

112 2422 015 05008 ACC FIX CABLE TYRAP44MM TY25M

113 4013 231 00000 SW MICRO MERCURY TILT114 4013 228 43111 RETAIN RING ST STL 032MS

116 1913 000 10377 CBL SL MARK 7,5I/DX25BK

117 1213 100 04014 PVC SELF ADH TAPE 1 IN BLK

118 4013 161 79281 LABLE - PLAIN

119 2813 100 06593 CAP SL MARK RED 2ID 2MM

120 2813 100 06617 CAP SL MARK YELLOW 4ID 7MM

121 2522 401 94015 HEX NUT DC ST ZN HV M8

122 2522 600 84152 WASH ST ZN HV 8.4X17


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124 2522 634 14007 RETAIN RING STL ST 4

125 2522 043 02048 GRUB SCR HEX ST BLK M4X6

126 4013 228 43101 SCREW CAP HD M6X50 A4

127 2522 177 29087 PAN SCR STL ST M4X25

128 2522 177 29058 PAN SCR STL ST M3X6

129 2522 600 27017 WASH STL ST 3,2X7X0,5

130 2522 401 09011 HEX NUT DC STL ST M4131 2522 006 04025 CAP SCR STL ST M4X20

132 2522 177 29061 PAN SCR STL ST M3X10

133 2522 177 29081 PAN SCR STL ST M4X8

134 2522 600 27026 WASH STL ST 4,3X9

135 1304 500 42503 LOCTITE 241 10ML BOTTLE

136 1313 506 98401 LOCTITE 662

137 1322 512 79601 LOCTITE 358 COVER

138 4013 161 79022 LABEL - HOT COVER

139 4013 228 43291 CAP PLASTIC 12865 M6

140 0813 056 47014 CBL SL PLAIN BL GLASS 6MM

141 2422 015 05024 ACC FIX CABLE TYRAP15MM TY23M

143 2522 177 29079 PAN SCR STL ST M4X6144 2522 608 02002 WASH ST CU NI M4X8

145 4013 161 78061 LABEL - WARN. MAGNETIC FIELD

146 4013 228 40651 WASHER NYLON BLK9,53X5,54X0,8

5.2 Zeeman PCB


1 4201 179 30912 PCB ASSEMBLY - MAGNET DRIVE PVB

2 4201 166 00062 BRACKET -ZEEMAN PSU

3 4201 172 03221 RIBBON CABLE - ZEEMAN 920W)

4 4201 172 03212 CABLEFORM - ZEEMAN MAINS5 4201 179 30921 PCB ASSEMBLY - MAINS FILTER

6 4201 228 00001 GROMMET - 6.4/9.5

7 4201 161 00072 LABEL SET - ZEEMAN

5.3 GFS35Z Zeeman Furnace Recommended Spares


115 4013 172 84231 CENTRE BLOCK ASSY

116 4013 172 84241 ADJUSTER SCREW ASSY

117 4013 172 84321 CLAMP FORCE JIG

118 4201 172 03181 MOTOR C/F - POLARISER

120 4201 172 00401 POLARISER BRACKET MODULE (SPARE)122 4013 220 34001 TIMER

123 4013 220 78061 TRANS POWER FET N CHANNEL

126 4013 166 91311 MAGNET BOLT

127 9423 450 20003 SOLAAR M SERIES ZEEMAN GFAAS SPARES KIT

128 4201 172 03221 RIBBON CABLE - ZEEMAN (20w)

129 4201 172 01011 ZEEMAN PCB/MAINS ASSEMBLY

132 4201 172 03291 CABLEFORM - ZEEMAN FURNACE HEAD

133 4013 166 81431 TUBE CLIP - PAINTED


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Magnet and furnace head


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Furnace head


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Services to furnace head


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Cooling water system


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Wiring diagram -1


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Wiring diagram - 2


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5 GFS35Z Zeeman Electronics Set-up Procedure

All test points and adjustments, are on the Main CPU pcb.

A new part-ridged uncoated cuvette should be used in the furnace when the psu

control circuit is set-up.

Use the Pre-defined Phases in the Furnace Tests from the Service Diagnostic

Software for the following calibration procedure.

(Use the annotated colored PCB layout diagram shown earlier in this section to make the

following adjustments.)

Inserting the Cuvette

With the jaws open, insert a part-ridged electrographite cuvette into the head.

Ensure that the cuvette seats itself properly when the jaws are closed, and that

the injection hole sits approximately in the middle of the centre block port.

Note: The cuvette used for setting-up the furnace must be an unused part-ridged electrographite cuvette for each new furnace head tested. A

test cuvette is included in each kit for this purpose. This is essential to

ensure an accurate electrical set up.

Calibration of Water Temperature Sensor

Allow the system to stabilise at a controlled water temperature for at least 10 minutes.

After the system has stabilised, measure the cooling water temperature using the

thermometer. Adjust RV12, if necessary, to give the correct temperature reading;

i.e. to make the sensed temperature the same as the temperature measured with

thermometer.

Check the DAC Output

Test Points TP5 +ve TP23 (AGND) -ve

Option J

Adjustment RV5

Reading 1.585 v 1 mV

Clockwise down

Connect a voltmeter (0 - 10 V d.c. range) across TP5 (+ve) and TP23 'AGND'

(-ve).

Select the 600 deg C for 30 seconds V.C. option (option J). The voltage should

read 1.585 V 1mV. If the voltage is incorrect adjust RV5 (Main pcb) to bring

the voltage to the correct value. Record the voltage on the results sheet.

Switch Furnace Power Supply off and set all DIP switches to off.

Turn Power On.

Check the Clamp Settings


Option F

Adjustment RV10

Reading 5.00V 10mV

Clockwise down


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Connect a voltmeter (0 - 10V d.c. range) to TP3 (+ve) and TP23 (-ve).

With no power to the head set the voltage to 5.000 V 10mV, by adjusting

RV10 on the main pcb.

Check the Clamp Settings


Option H

Adjustment RV9

Reading 2.800V 10mV

Clockwise down

Connect a voltmeter (0 - 10V d.c. range) to TP3 (+ve) and TP23 AGND (-ve).

Select the 2900 deg C VC for 10 seconds option (option H). The voltage reading

should be 2.800 V 10mV. If the voltage is incorrect adjust RV9 on the Main

pcb.

.

Remove Loop Offset

Test Points TP5 +ve TP7 -ve

Option J

Adjustment RV8

Reading 0.000V 1 mV

Clockwise up

Connect the voltmeter (0 - 10 V d.c. range) across TP5 (+ve) and TP7 (ve).Select the 600 deg C for 30 seconds option (V.C.) (option J). The voltage reading

should be 0.000 V1mV. If the voltage is incorrect adjust RV8 on the Main pcb.

Set-up the Temperature Feedback Range


Option H

Adjustment RV2

Reading 0.000V 10mV at 10 secondsClockwise down

Connect the voltmeter (0 - 10 V d.c. range) across TP1 (+ve) and TP23 AGND (-ve).

Select the 2900 deg C for 10 seconds (V.C.) option (option H). Adjust RV2 to give

a voltage reading of 0.000V 10mV exactly at the end of the 10 seconds.


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Set-up Temperature Feedback Offset

Switch the RUN/TRIM switch (SW1 on Main pcb) to TRIM.


Option FAdjustment RV7

Reading 5.685V 1 mV IN TRIM MODE

Clockwise down

Connect the voltmeter (0 - 10V d.c. range) across TP4 (+v) and TP23 AGND

(-ve).

With no power to the head adjust RV7 to give a voltage reading of 5.685V

1mV.

Switch the RUN/TRIM switch (SW1 on Main pcb) to RUN.

Set the Temperature Feedback


Option J

Adjustment RV6

Reading 1.585V 20mV at 30 seconds

Clockwise down

With the voltmeter still connected to TP4 and AGND, select the 600oC for

30 seconds (V.C.) option (option J). Adjust RV6 to give a voltage reading of

1.585V 20mV exactly at the end of the 30 seconds.

Check the Temperature Feedback Range


Option H

Reading 5.685V 20mV at 10 seconds

With the voltmeter still connected to TP4 and TP23, select the 2900oC for

10 seconds (V.C.) option (option H). The voltage reading should be 5.685V

20mV exactly at the end of the 10 seconds.

Temperature Control Test

Run the unit under temperature control (Factory Test G).

Check that the furnace heats correctly under temperature control.

Clamp Setting

TP23 and (TP100)Set RV13 to give 0 volts

This sets the clamp off to give maximum sensitivity


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Reassembly of the Power Supply

Replace and secure cover with the 6 screws around its base.

Replace the water box cover.

System Test on Chemical Analysis, and Emission Breakthrough Check

Connect the furnace to a system comprising a Spectrometer, FAS

autosampler, PC and a printer. Argon should be used as the inert gas for

the furnace.

Insert a new part-ridged pyro-coated cuvette.

Tilt the furnace head forward, and request a "Clean Cuvette"; the system

should shut down with the Error message "the furnace head is out ofposition". If not; check tilt forward sensor is correctly wired up.

Undo the magnet bolt and pull the poles apart; the Error message "the magnet

is open" should be displayed. If not; check the connection to the opto sensor.

Do up the magnet and tilt the head back again.

Set up the FAS and align with the cuvette. Load the FAS carousel as follows:

Sample position Solution

#1 - #5 20 ppb Mn

#6 Deionised water

#7 20 ppb Mn

Select a "Wash autosampler", check that the a/s washes correctly.

Run a "Clean Cuvette" once, then start the analysis. Check with a mirror that

the blank dries without boiling/spitting, and that drying is complete before the

end of the phase. The signal graph should display a smooth dry phase (no

sharp spikes present), and a low absorbance ash phase.


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Commissioning Chemical Analysis Test

Load the parameters for the Mn chemical test - see below.

Carry out a "Clean cuvette".

Start the analysis.

The blank should be less than 0.025A and the Mn sample should be greater

than 0.8A with an RSD of less than 2%.

Printout the results (File - Print - Analysis Results), and save the results.

Change the background correction to "D2".

Carry out another two "Clean Cuvette"s and then start the analysis again.

The blank should be less than 0.01A and the Mn sample should be greater

than 1.0A with an RSD of less than 2.0%.

Printout and save the results.

System Test and Commissioning Test Analysis Parameters

MANGANESE

Wavelength

Bandpass

Background correction

High resolution

Number of resamples

Injected sample volume

Sequence

Cuvette type

Injection temperature

279.5 nm

Reduced 0.2

Zeeman / D2

Off

5

10ul

Samples #1 - #5 selected out of 7

Coated

0oC

RD TC

TC

Furnace Program Time Ramp Gas Gas Commands

phase temp (C) (s) (C/s) type flow

1 80 10.0 50 3 0.2L/min

2 90 10.0 1 3 0.2L/min

3 100 5.0 1 3 0.2L/min

4 110 1.0 2 3 0.2L/min

5 700 5.0 250 3 0.2L/min

6 1800 3.0 0 3 0.0L/min

7 2500 3.0 0 3 0.2L/min


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6 Zeeman Furnace Head Clamp Force Setting

To enable the clamp force to be set accurately, a setting tool, part number 4013

17284321 is required.

Access to the clamp force setting adjustment is achieved by removing the rubber cap

and grommet to reveal the hex head screw. Start the procedure with the clamp force

slack.

Insert the setting tool between both contact cones such that the balls on the tool seat

in the cones and close the clamp.

(Connect a continuity meter between pins A and B on the setting tool. Insert a piece of

fine paper between the contact pin C on the tool and gradually tighten the clamp force

by using the hex head screw until the paper is just trapped. Slacken the screw slightly

and remove the paper.

DO NOT OVERTIGHTEN THE SCREW OR DAMAGE WILL BE DONE TO THE

TOOL

Gradually tighten the clamp screw until the continuity meter is triggered. The clamp

force is now set correctly. Remove the setting tool.

c

Thispage

is

A

Clamp force setting tool (part no. 4013 172 884321)

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8 GFS35Z Zeeman Furnace Accessory