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D. Connect the Gauge Tube
Make sure that the gauge tube is securely connected to the vacuum system, using good vacuum
practice. The gauge tube must be mounted with its axis horizontal, and the port pointing down;
large errors may result at higher pressures if the gauge axis is not horizontal.
E. Attach the Gauge Cable
The gauge cable has a special connector for the gauge on one end and a 15-pin DB connector on
the other. Be sure to use the cable supplied with the Model 906A.
CAUTION
Make sure that the power to the controller unit is off before you connect
the gauge tube to the controller unit. Unplugging and then plugging in
the gauge cable with the power on can cause the gauge to burn out.
Connect the gauge cable to the gauge tube. Align the keyway of the connector with the key on the
gauge tube, and push the connector onto the gauge tube’s pins until it seats firmly.
Connect the 15-pin DB plug of the gauge cable to the 15-pin DB jack on the back of the controller
unit. Push the plug onto the jack until it is firmly in place. Tighten the retaining screws to make
certain the connector remains in place. Loose connections can damage the gauge.
NOTE
If you have a cable from one of the analog display Granville-Phillips
CONVECTRON® gauge controllers, it is an easy task to convert the cable
for use with the Model 906A. The analog controller uses a combination
cable for the CONVECTRON® gauge and for AC power input. To con-
vert the cable:
• You must have a DB15 connector with male pins; a connector with solder
cups is an easy version to work with. If you have difficulty locating one of
these, call us and we will send you one.
• Identify the cable which plugs into the CONVECTRON® gauge.
• Follow the cable to the edge-connector and cut the cable, separating the ca-
ble from the edge-connector.
• Remove the jacket of the cable, about 1.5 inch (40 mm).
• Strip the wires, about 0.25 inch (0.5 mm).
• Observe the pin numbers identified on the CONVECTRON® gauge con-
nector and the DB15 connector.
• Connect as follows (Granville-Phillips colors are shown, but you should
verify the connections with a continuity checker): see next page.
TELEPHONE: 650-969-8811 TOLL-FREE (U.S. only): 800-446-8811 FAX: 650-965-0764 EMAIL: [email protected]
www.duniway.com
