Riken Keiki GD-3EC, Technical Manual

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2. Important Safety Information 2-4 Safety information
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<Connector screw thread types and sizes (SD-3/SD-3SC)>
<Standard>
Connector 1 Connector 2 Connector 3 Connector 4 Connector 5 Connector 6
M25 × 1.5 M25 × 1.5
― ― ―
M25 × 1.5

“ ― ” indicates no connector is available.

Connectors 1, 2, and 6 can be used as cable entry ports. Use Connector 6 if the main unit (SD-3SC) is
connected to the remote sensor head (GD-3) with a cable. Use approved cable glands when connecting the
remote sensor head (GD-3).

Blank off unused connectors with blanking plugs.

For more information on using individual connectors, refer to ‘4-7 Cable connection’.
<Optional>
Connectors 4 and 5 are available with optional screw threads, as follows:
Connector 1 Connector 2 Connector 3 Connector 4 Connector 5 Connector 6
M25 × 1.5 M25 × 1.5
―
M25 × 1.5 M25 × 1.5 M25 × 1.5

“
―
” indicates no connector is available.

Connectors 1, 2, 4, and 6 can be used as cable entry ports. Use Connector 6 if the main unit (SD-3SC) is
connected to the remote sensor head (GD-3) with a cable. Use approved cable glands when connecting the
remote sensor head (GD-3).

Up to two external cable connectors can be used at the same time. (Excluding the remote sensor head
(GD-3) connector cable)

Connector 2 or 4 can be used to connect the optional lighting arrester using the optional adapter (to convert
M25 × 1.5 screw thread to 1/2 NPT screw thread).

Connector 5 is used for HART communication with an optional HART modem connector. Do not insert
external cables or connect a lightning arrester. Blank off with a blanking plug if you do not use HART
communication.
 Blank off unused connectors with blanking plugs.

For more information on using the individual connectors, refer to ‘4-7 Cable connection’.
Connector 4
Connector 3
Connector 5
Connector 6
Connector 2
Connector 1