In stal la tion
Terminal Connections
(
continued
)
CE Mark units see fig. 19, on page 21.
TB1 position
Function
1 4-20mA Output
2 NOT USED
3 NOT USED
4 NOT USED
5 NOT USED
6 Common (Ground)
7 +24VDC Power
NOTE
:
Contact with PCB components
should be avoided to prevent damage by
static electricity. All wire connections are
made to the Terminal Blocks.
It is recommended that a three wire (red,
black, white) shielded cable be used for
making power and output signal connections
on the Model S214. The terminal block
accepts 16 AWG to 22 AWG stranded or
solid wire. Each wire should be stripped
before wiring the Model S214 Hydrogen
Sulfide (H
2
S) Gas Enhanced Smart Sensor.
NOTE
:
14 AWG wire can be used if it is
carefully stripped (figure 9).
fig ure 9
To connect wiring to the terminal block,
insert a screw driver into the orange tab and
press down (figure 10), opening the terminal.
Insert the wire into the terminal and release
the orange tab, clamping the wire in the
terminal. Check the connection by GENTLY
tugging the wire to ensure it is locked in.
A 4 to 20mA output signal is provided by the
Model S214 Hydrogen Sulfide Gas Enhanced
Smart Sensor and can be sent up to 9000 feet
(2740 meters) to a General Monitors
readout/relay display module, industrial
analog to digital converter, computer based
monitor, PLC, DCS, etc. See the Appendix
(section 5.1.3) for cable length specifications.
The 4 to 20mA signal provides for control
room or other locations remote to the Model
S214 to display indications of operation and
alarm conditions.
fig ure 10
GENERAL MONITORS
Model S214
8
