Troxler RoadReader 3430 Reference guide

1
Installation Procedures for the InstroTek Universal Base
Board (UBB)
June 24 2013
The UBB is designed as an easy replacement for Troxler models 3411, 3430, 3440
baseboards as ell as the InstroTek 3500. Certain tools are required to install and setup
the UBB for it to function correctly. The InstroTek arranty on this product requires that
only authorized, trained service personnel familiar ith these types of products conduct
the installation and setup. Once the UBB is installed, the gauge should be re-calibrated or
verified according to ASTM D2922.
Model 3401 and 3411 Baseboard Installation are covered in Section A
Model 3430 and 3440 Baseboard Installation are covered in Section B
InstroTek Model 3500 Baseboard Installation are covered in Section C
lectronic Adjustment and Setup Procedure are covered in Section D
Tools Required:
• Soldering iron and solder
• De-soldering iron or solder remover (3411 only)
• Phillips scre driver
• 5/16” nut driver
• Small je elers scre driver or Potentiometer adjusting scre driver
• Oscilloscope
• Digital multi-meter (DMM)
• High voltage probe
S CTION A – Installing the UBB in a 3401 or 3411 Gauge:
Use the follo ing parts from the existing 3411/3401
gauge along ith your ne UBB to complete this
task
1- GM tube holders and scre s(2)
2- GM tubes ith nylon spring supports and
springs (2 each)
3- He3 tube (1)
4- metal base plate (1)
5- Copper grounding spring (2)
6- Curved He3 tube support and scre (1each)
7- Scre s and ashers that attach circuit board
to metal plate.
8- Scre s and ashers that attach baseboard
assembly to gauge
Fig. 1
Fig.2

2
Disassembling the existing baseboard:
1. Turn off the gauge and place the gauge on a
standard block. Remove the top shell,
disconnect the batteries, discharge the high
voltage and remove the existing baseboard
and metal plate assembly.
2. Remove the He3 tube from the assembly by
removing the curved support bracket and
then pulling the tube do n ard a ay from
the baseboard.
3. Use a 5/16 nut driver to remove the scre s
securing the GM tube holders. The GM
tube holders are slotted and are held by the
metal plate. One end of the GM tube holder
ill still be connected to the baseboard by
soldered resistors. Slide off the other one
and remove the tubes. Figs 1, 2 and 3.
4. Do not discard the copper grounding
springs, as they are needed ith the ne
UBB assembly.
5. The nylon spring supports and small coil
springs are located in the resistor connected
end of the GM tubes and may drop out if the
tube is turned do n ard during removal.
Save these.
6. Separate the metal base plate from the
baseboard by removing the scre s on the
top of the baseboard.
7. Slide the metal base plate off the remaining
GM tube holder.
8. From the top of the board, use a de-
soldering tool to disconnect the resistors
from the baseboard. This ill allo you to
remove the remaining GM tube holder from
the old baseboard.
9. You are no ready to assemble your ne
UBB board.
Assembling the new UBB baseboard:
1. Remove the metal cover from the UBB by
removing the scre s.
2. Locate the 3 groups of jumpers on the UBB.
Fig 5.
Fig.3
Reuse these parts
Fig. 5
Fig.6

3
3. The groups of jumpers are marked as
“3411” “3430” or “3440/ 3500” s itches.
4. To configure the UBB for operation as a
3401/3411baseboard, only the group of
jumpers marked as 3411 switches need to
remain shorted by means of the jumpers.
Carefully remove all of the jumpers from
the groups marked as 3430 switches and
3440/3500 switches by cutting them with
wire cutters.
5. Locate the groups of jumpers marked S4 and
S6. Leave the jumpers marked 3411. Cut
the jumpers marked 3500/3430.Fig 6b
6. Place one copper grounding spring bet een
the bottom side of the UBB and the GM
tube holder ith the resistors. Ensure the
resistor leads from the GM tube holder
extend through the solder holes of the UBB.
Secure the GM tube holder ith the
mounting scre s. Solder the resistor leads
to the UBB at GM1 and GM2 points. Fig.6.
7. Slide the metal base plate into the grooves
on the GM tube holder.
8. Secure the UBB to the metal base plate ith
the scre s taken out.
9. Place the GM tubes into the secured GM
tube holder making sure the end of the GM
tube ith springs and nylon spring supports
are the end inserted into this connector.
10. Install the other copper ground spring and
GM tube holder by sliding it onto the metal
base plate and securing it to the UBB ith
the appropriate scre s. Fig. 7 and 8.
11. Reinstall the He3 tube and mounting
bracket. Fig.9.
12. Place the complete assembly back into the
gauge and secure it ith the appropriate
scre s.
13. Connect the batteries and control board
(front panel) to the UBB.
14. The UBB assembly is no complete and
ready for electrical adjustment and setup.
15. Proceed to Section D.
Fig.7
Fig.8
Fig.9
Fig 6b
S4
S6

4
S CTION B – Installing the UBB in a 3430 or 3440 Gauge:
NOT : In addition to the UBB, the UBB Base Board Kit, part
#1520103, is required to replace baseboards in Troxler Model 3430 and
3440 gauges.
The Base Board Kit Includes:
1. Metal base plate assembly (1)
2. GM tube interface circuit board (1)
3. 4-40 scre s (4 each)
4. 6-32 x .500 (6 each)
5. 6-32 x .375 (3 each)
6. Interface board header (1)
7. # 4 lock asher (4 each)
8. # 6 lock asher (9 each)
9. metal cover box
Installing the UBB in a 3430 or 3440 gauge:
Use the follo ing parts from the existing 3430/3440
gauge along ith your ne UBB and Base Board
kit to complete this task.
1. GM tubes (2)
2. GM tube holder and scre s(1)
3. He3 tube (1)
4. Curved He3 tube support and scre
5. Scre s and ashers that attach circuit
board to metal plate.
6. Scre s and ashers that attach baseboard
assembly to gauge.
7. Small angle bracket at GM tube end.
Disassembling the existing baseboard:
1. Turn off the gauge, place the gauge on a
standard block, remove the top shell,
disconnect the batteries, discharge the high
voltage and remove the existing baseboard/
base plate assembly.
2. Remove the He3 tube from the existing
baseboard by removing the metal bracket and
Fig. 10
Fig. 12
Fig. 11

5
pulling the tube do n ard a ay from the
existing baseboard.
3. Remove the scre s securing the plastic GM
tube holder. (Fig 10)
4. Carefully remove the GM tubes by prying
them out of the connectors ith a small flat
scre driver.
Assembling the new UBB baseboard:
1. Remove the metal cover from the UBB by
removing the 3 scre s and ashers. Fig. 11.
2. Locate the 3 groups of jumpers on the UBB.
See Fig. 5.
3. The groups of jumpers are marked as “3411”
“3430” or “3440/ 3500” s itches. To
configure the UBB for operation baseboard
of your choice, only the group of jumpers
for your selection of baseboard need to
remain shorted by means of the jumpers.
Carefully remove all jumpers of the
remaining 2 groups by cutting them with
wire cutters.
4. Locate the groups of jumpers marked S4 and
S6. Leave the jumpers marked 3500/3430.
Cut the jumpers marked 3411. Fig 12b
5. Looking do n on the UBB ith the jumpers
at the bottom section of the board, locate the
3 holes on the left side. Solder the GM
assembly header on the underside the board
at this location. The header should sit flush
on the board. Fig. 12.
6. Attach the small angle bracket to the ne
metal base plate. Fig 13a &13b.
7. Secure the UBB to the base plate ith the
appropriate scre s. Use the provided flat
ashers under the lock ashers. Fig 14.
8. Carefully press the GM tubes into the
contacts on the GM tube interface board.
9. Slide the GM tubes into the GM tube holder
mounted on the metal base plate and attach
the GM tube interface board to the baseboard
mounted header. Fig. 15.
10. Secure the GM tube interface board ith the
provided 4-40 scre s and ashers. Fig. 16.
Fig. 13a
Fig. 13b
Fig. 14
12b
S4
S6

6
11. Reinstall the He3 tube and mounting bracket.
12. Place the complete UBB assembly back into
the gauge and secure it.
13. Connect the batteries and scaler to the UBB.
14. For 3440 gauges connect the depth strip to
the header on the upper edge of the UBB.
Fig. 16.
15. The UBB assembly is no complete and
ready for setting up.
S CTION C – Installing the UBB in
an InstroTek 3500 Gauge:
All existing hard are from the presently installed
3500 baseboard is utilized for the replacement
baseboard.
Disassembling the existing baseboard:
1. Turn off the gauge, place the gauge on a standard
block, remove the top shell, disconnect the
batteries, and remove the 3 scre s securing the
metal cover from the top of the existing
baseboard. Discharge the high voltage by shorting
the pins on the upper left side of the baseboard.
2. Remove the 6 scre s securing the existing
Base board to the base plate.
3. Using both hands, gently pull the baseboard
directly up ard removing it from the base plate.
Assembling the new UBB baseboard:
1. Align the HE3 tube ith the connector on the
ne UBB and firmly press the UBB do n ard.
Verify the HE3 tube makes a secure connection to
the UBB connector.
2. Gently raise the lo er left side of the UBB and
visually align the GM pins on the UBB ith
the GM header assembly connected to the
baseplate.
3. Press do n on the UBB seating the GM pins into
the GM tube header.
4. Secure the UBB to the baseplate ith the 6
baseboard securement scre s.
Fig. 15
Fig. 16

7
5. Before installing the metal UBB cover verify the
setup procedure in Section D.
S CTION D - lectronic Adjustment
and Setup Procedures
1. Place the gauge on the standard block. Turn
on the gauge.
Setting up the moisture signal:
2. Set the oscilloscope to 200 mV scale, ac coupled and very small
µsec(s) time base.
3. Locate the test point “M-ADJ” on the UBB. This is located at the
upper right of the UBB belo the battery connections.
4. Place the scope probe in the test point and connect the ground lead
of the probe to the gauge aluminum base.
5. Using the scope and small scre driver, adjust potentiometer R33
until you have a moisture signal at this test point ith peak
amplitude of 600 mV.
Setting up the Density signal:
6. Locate the test point “D2-ADJ” and “D1-ADJ” on the UBB.
These are located on the lo er side of the UBB left of the jumpers.
7. Place the scope probe in one test point and connect the ground lead
of the probe to the aluminum gauge base.
8. Using the scope and small scre driver, adjust potentiometer R15
(for “D2-ADJ”) and R7 (for “D1-ADJ”) until you have a density
signal for each of these test points ith a peak amplitude of 600
mV.
Reassemble the gauge:
9. Turn off the gauge and discharge the high voltage circuit by
shorting the “HV-Discharge” pins on the upper left corner of the
UBB ith an insulated metal object such as a scre driver.
10. Place and secure the metal cover on the UBB.
11. Reassemble the gauge.
12. The gauge ill need to re-calibrated or
verified for accurate results according to
ASTM D2922.