Electrical Entries And Connections - Sony Multiscan CPD-1304S Service Manual

Structure of GasLab Q2

4.2.2 Electrical entries and connections

There are four holes for all electrical purpose (power, communication and I/O services) on top
of the device. These electrical entry holes provide a M20x1.5 thread (see figure 4.4). Optionally
½" NPT thread via adapter is possible, please contact Elster for details. These holes have to be
equipped with with blind plugs, adapters or cable feedthroughs. This screw-in parts must have
the correct IP class and suitable ex-certifications. They are to be installed and potted according
to the specifications of the manufacturer from the screw-in part in order to maintain the stated
explosion protection. Two electrical entries and two stopping plugs are used by default as
standard for Q2. Other examples of suitable electrical entries would be:

Certified cable glands with a compression ring.
Which is only permitted in combination with cables:
not being sensitive to cold flow, not allowing air to pass through, and at least three meters long.

Conduit stopping boxes
as long as they are sealed within 1xD from the housing (For ATEX and IEX-Ex).
Elster preferred cable fittings and blind plugs are listed in the following table:
Type of blind plug
Redapt PA-D brass stopping plug type 'A'
Type cable fitting
Hawke ICG 653/UNIV
flameproof cable gland,
castable with two part-
sealing compound**,with
shiled connection
The components mentioned here are necessary accessories for the
measuring instrument, which is included in the recommended version. In
addition, even a large number of variations*** is possible.
* Higher number of cores only for ATEX and IECEx; lower number of cores for all other certification.
** In order to maintain the stated explosion protection, the sealing / potting of the cable screw connection
must be carried out according to the specifications and hints from the manufacturer of calbe fitting!
***Variation example: Use of conduit with single wires, these must be sealed within 18" (45cm) to meet
FM conditions (FM approval is still pending) for ATEX and IECEx it must be within 1xD from the housing
just like in a normal gland. Please contact the Elster GmbH, if you want to deviate from the standard.
The upper part of fig. 4.4 shows the electrical entries and the connection box with the connection
board for all electrical interfaces (plugs at the edge of the board). The plugs are secured by detent
hooks. The wires to the lower part of housing are located in the middle of the connection board.
The corresponding plug must not be removed. For more information see chapter 5.4.
Overview of supplied electrical interfaces
Power :
Communication ports:
I/O services:
GasLab Q2
Protection
Ex db IIC
Protection No. of Cable Dia-
Cores* meter (mm)
6/12 5.5 to 12
Ex d IIC 6/12 9.5 to 16.0
10/15 12.5 to 20.5
24 V DC Fluctuation, including mains fluctuation ±15%
1 x Ethernet (Modbus TCP; HTTP)
2 x RS485 (Modbus serial)
2 x Digital input device, self-powered max. 9 V,
to be connected to a potential-free contact or NAMUR sensor
4 x Digital output (First one NC, others NO),
potential-free, max.120 mA at 28,8V (DC)
4 x Analog output (Short circuit protection, R max = 390 Ω)
G a s Q u a l i t y A n a l y z e r
Thread Part No.
M20x1.5 PA-D-1-0-04-00
Thread Part No.
ICG 653/UNIV...
...Os M20 Brass
M20x1.5
...O M20 Brass
M20x1.5
...A M20 Brass
M20x1.5
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