Agilent Technologies G3440-68011 User manual
Agilent Technologies
Agilent G3440-68011 Micro Electron
Capture (µECD) 3rd Detector
For the Agilent 7890B Gas Chromatograph
Installation Instructions
Parts Supplied
1/8-inch
Table 1 Parts supplied
Description Quantity Part number
Electron Capture Detector (µECD) 1 G2397-65506
µECD 3rd detector box assembly 1 G3440-60011
µECD board (included with µECD Module) 1 G3433-61020
µECD Caution label 1 19233-90730
3rd µECD supply tube weldment 200 mm 1 G3433-81000
Third detector EPC communication cable 1 G3432-60505
Third detector heated zone cable 1 G3432-60506
Third detector PCA frame assembly 1 G3430-00122
Frame 3rd EPC 1 G3430-00062
Third detector adaptor plate 1 G3497-00001
Solenoid valve bracket 1 G1580-00070
AUX Zone/VLV box cable 1 G1530-60660
MSD HTD Zone 1 G1530-60790
Nutwarmer cup assembly 1 19234-60700
Nutwarmer insulation 3 19234-60715
Scr-Mach M4X0.7 25 mm 2 0515-2712
M4 x 12 mm screws 11 0515-2496
Nameplate (attached to detector) 1 7120-1454
1/8-inch nut & ferrule set brass swagelok 1 5181-7481
Bulkhead fitting retainer, 316 SST 1 0100-0137
1/8-inch bulkhead union 1 0100-0133
M 4 captive screw 2 1390-1023
2Installation Instructions
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Parts Identification
Figure 1 µECD Parts identification
µECD
EPC module
µECD board
µECD Caution
label
µECD module
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Installation Instructions 3
Figure 2 Brackets and cables
Figure 3 Pneumatic parts
Detector PCA
frame assembly
Third detector adapter plate
Third detector EPC frame
Third detector EPC
communication cable
Grommet
MSD heated zone cable
Third detector heated
zone cable
3rd µECD supply tube weldment 200 mm Bulkhead fitting retainer
Not used (discard)
Bulkhead union
4Installation Instructions
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Figure 4 Solenoid valve bracket and aux zone/valve box cable
Tools Required
•T-20 Torx driver
•Flat screwdriver
•7/16-inch and 1/2-inch Open-end wrench
•Phillips head screwdriver
•ESD wrist strap
Aux zone/valve box
cable connector
Solenoid valve bracket
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Installation Instructions 5
Installation Procedure
This procedure explains how to install the Side-Mounted Electron Capture
Detector (μECD) accessory on the Agilent 7890B Gas Chromatograph (GC).
Prepare the GC
1If the GC is connected to a mass spectrometer (MS), vent the MS and shut it
down. Refer to the MS Operation manual.
2If a headspace sampler (HS) is installed to a GC inlet, disconnect it. Refer to
the HS documentation.
3Set the GC oven temperature to 40 °C. Turn off the inlet, detector, valve
box, and other heaters.
4When the oven cools, turn off the GC and unplug the power cord.
5Allow time for the detector(s) and other heated zones to cool.
6Remove the pneumatics cover. Two large buttons on each side of the GC
secure the cover to the detector frame. Press both buttons and lift the cover
off.
WARNING
Refer to the Safety Manual that came with your Agilent 7890B Gas
Chromatograph for hazards that may exist when maintaining your instrument.
WARNING
All versions of µECD cells contain radioactive material. Exposure to radioactive
material is hazardous to human health. Under no circumstances should an µECD
cell be disassembled, as this is in violation of the General License agreement.
µECDs must be returned to a licensed facility. Agilent will accept only µECDs
manufactured by either Hewlett-Packard or Agilent Technologies, Inc.
WARNING
Before proceeding, turn off the column heater and other heated zones and let
them cool down. When they have cooled, turn off any detector gases at their
supply, then turn off the main power switch and unplug the power cord.
CAUTION
Always allow time for the column heater and other heated zones, to cool before
turning off the gas supplies. Failure to allow cooling may damage the flow path.
CAUTION
Make sure you are properly grounded with an ESD wrist strap before continuing.
6Installation Instructions
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
7Remove the detector cover by raising the cover vertically (until it is
perpendicular to the GC oven) and then firmly lifting up on the right side of
the cover to free it from the hinge pin. Slide the cover’s hinge pin out of the
hole on the inlet side and set the cover aside.
8Remove the electronics cover. Loosen the screw on the left side of the
electronics cover. Open the cover 90 degrees and lift up on the right side.
Slide the cover off of the left side hinge.
9Remove the GC right side cover. Loosen the single top screw, then slide the
cover towards the back of the GC and remove.
10 Remove the top back cover by loosening the four screws. Slide the top back
cover to the left until free, gently tilting out the lower end of the cover as
needed for removal.
11 Remove the GC left side cover by loosening the top screw, sliding the panel
towards the back, and lifting off the cover.
12 Put on an ESD wrist strap, and attach the ground to the GC sheet metal
frame for electrostatic protection.
Install the solenoid valve bracket and cables
1Skip to step 6 if the solenoid valve bracket is already installed on your GC.
2Insert the four smaller valve plugs and two larger aux heater plugs into the
slots in the solenoid valve bracket. Match the labels on each plug to its
correct location as shown in Figure 5.
Figure 5 Connector installation for the solenoid valve bracket
3Connect the aux zone/valve box cable connector into the analog and power
(A&P) board at P22. See Figure 6.
A1
V1 V2 V3 V4
A2
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Installation Instructions 7
Figure 6 Aux zone/valve box cable and solenoid valve bracket install
4Align the solenoid valve bracket so the cables are coming from the bottom
of the bracket and the screws are located at the top over the screw holes in
the frame. See Figure 6.
5Tighten the captive screws into the frame.
6Connect the MSD heated zone cable (long) to the bracket in the first (A1) or
last (A2) position. Record its position for use during configuration.
7Route the MSD heated zone cable (long) across the top of the GC oven. Pass
it under any detector gas lines and through the channels to the right side of
the instrument. See Figure 7.
Figure 7 Route the MSD heater cable across the GC oven top (view from front of GC)
8On the left side of the oven top, unfasten the grommet and include the MSD
heated zone long cable. See Figure 8. Refasten the grommet.
AI V1
V2
V3
V4 A2
Solenoid valve
bracket
Bracket captive
screws
MSD heated zone
cable (installed in
first position)
Aux zone/valve box
cable connection at P22
8Installation Instructions
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Figure 8 MSD heated zone cable included in main communication grommet
9Route the MSD heated zone cable behind the inlet fan and down the left
side of the GC. Include it in the grommet as shown in Figure 10 on page 10.
10 Connect the third detector heated zone cable to the open end of the MSD
heated zone cable (on the side of the GC). See Figure 10 on page 10.
11 Connect the EPC5 female connector of the third detector communications
cable to the matching EPC5 connector on the main communications harness.
The EPC5 connector is typically located in EPC bay 5. See Figure 9 on
page 9. You may need to lift any PCM or Aux EPC module to access EPC5 on
the main harness.
12 Connect the Aux Det1 female connector of the third detector
communications cable to the matching Aux Det1 connector on the main
communications harness. Aux Det1 is located in the back inlet EPC bay.
As an example, shown in Figure 9, is a TCD EPC communications cable
connection and routing.
MSD heated zone
cable
Grommet
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Installation Instructions 9
Figure 9 Third detector EPC communications cable connections and routing
13 Route the third detector EPC communications cable along the outside edge
of the EPC carrier, back and through the slot near the inlet fan, then behind
the inlet fan and down the left side of the GC. See Figure 9 and Figure 10.
Figure 10 Route the third detector EPC communications cable
EPC5 connector located in bay 5 Route cable between inlet fan and EPC
chassis split vent trap area
Route cable along back edge of
EPC chassis
Aux Det1 connection Route cable along side
of EPC bays
Grommet
MSD heated zone
cable
Third detector EPC
communications cable
10 Installation Instructions
Agilent G3440-68011 Micro Electron Capture (µECD) 3rd Detector
Prepare the GC left side
1Use a flat-head screwdriver to remove the sheet metal knockout on the left
side of the GC. See Figure 11.
Figure 11 Remove sheetmetal knockout
2Remove the circular insulation plug and any excess insulation. Use a
flat-bladed screwdriver to create a 1/4-inch hole through the oven
insulation and into the oven. See Figure 12.
Figure 12 Prepare mounting hole for the µECD
3Install the 3rd detector adaptor plate to the side of the GC using four
12 mm M4 screws. See Figure 13.
Hole for 3rd µECD installation
Insulation removed
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