A1 13 DTR.APC.APR.ALW.03
(ENG)
Appendix MID
5.2. Connectors to pressure installation.
Connecting your pressure install with a transmitter should be made in accordance with the requirements for an
installation using the transmitter connector. Transmitters in the MID version are equipped with one of the
following types of Aplisens pressure ports: M, P, G1/2 G1/4, GP, R1/2, 1/2NPT (see p.5.2.4.). Pressure
connection type, which designation given is the type of transmitter, the purchaser should agree with the
manufacturer. Transmitters in the MID version do not provide connections to the diaphragm seals.
5.3. APC-2000ALW for MID applications. Electrical connections to the transmitter.
In measuring systems according to EN 12405-1 APC-2000ALW transmitters in MID version connecting to
measuring install is always a two wire. For the connection of power and signal receiving terminals <SIGNAL+>
and<SIGNAL-> of transmitter should be used with the polarization behavior -< + > to <SIGNAL +>; < - > to
<SIGNAL->. Terminals < test +> and < test - > of transmitter in the metrological applications are not used.
The way of APC-2000ALW transmitter connecting to measurement installation in MID applications is shown in
Figure 1a.
+TEST
-TEST
-
+
SIGNAL
240
Ω
4÷20 mA + Hart
+
_
jumper
FOR HART OUTPUT SIGNAL
JUMPER MUST BE REMOWED WHEN Rd<250OHM
gas-volume
conversion device
with DC supplier
Ro
Fig. 1a. APC-2000ALW for MID application. Connecting diagram of transmitter to powering and measuring
installation.
For electrical connection should be use twisted pair cable; not shielded, flexible, with diameter 5mm φ 7mm,
complies to ATEX standards. Example of the type of cable is shown below.
Grounding to the transmitter should be performed according to the gas-volume conversion device
documentation. To transmitter grounding should be used external earthing terminal if grounding by pressure
connector is not enough. An exemplary method of grounding of pressure measuring system is shown in Figure
1b.
gas-volume
4÷20 mA + Hart
+
_
conversion device
with DC supplier
Fig. 1b. APC-2000ALW pressure transmitter for MID application. Recommended by manufacter way of earthing
to the measuring system.
Producer Technokabel
LAPPKABEL
Type
IB-YSLY 2x0.75 ÖLFLEX
®
EB 2X1 (nr art. 0012440)
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