Det-Tronics U9500 Infiniti Gas Transmitter - Manual (Page 11)

95-8444 9 10.1
CONTROLLER/SIGNAL RECEIVER OPTIONS
All Model U9500 Series transmitters offer an analog 4
to 20 mA output, which is configurable for electrically
isolated or non-isolated operation. The analog signal is
capable of driving a maximum 600 ohm resistance load.
Typical controllers used with the U9500 Series include
the family of R8471 Controllers, or the Model 8000 eight
channel controller for % LFL flammable gas monitoring.
It is also acceptable to use the U9500 with other devices
or systems capable of accepting 4 to 20 mA signal
inputs. The following illustrations provide examples
of recommended interconnecting wiring between the
U9500 and analog signal receivers:
Figure 11 — A Typical System, Infiniti Transmitter with
PointWatch Wired to R8471 Controller,
Non-Isolated Current Output
Figure 12 — A Typical System, Infiniti Transmitter
with PointWatch Wired to a Model 8000
Controller, Isolated Current Output
Figure 13 — A Typical System, Infiniti Transmitter
used with PLC Analog Input Module,
Isolated/Non-Isolated Current Output
SENSOR SEPARATION
Det-Tronics sensor termination boxes (STBs) enable
the installation of the sensor separately from the Infiniti
transmitter module. Three conductor shielded cable must
be used to prevent possible nuisance EMI/RFI. Contact
the factory for ordering information. (See Appendix C for
CE/ATEX rating details.) Refer to these typical system
wiring diagrams for guidance:
Table 2 — Wiring Size and Maximum Distance from
Transmitter to Sensor
Figure 14 — Sensor Separation with Combustible Gas
Sensor and Infiniti Transmitter
Figure 15 — Sensor Separation with PointWatch and
Infiniti Transmitter
Figure 16 — Sensor Separation with Toxic and
Oxygen Gas Sensors and Infiniti
Transmitter
Figure 17 — Sensor Separation with Chlorine Gas
Sensor, Intrinsically Safe barrier and
Infiniti Transmitter
AUX RELAY LOW RELAY HIGH RELAY NC COM NO NC COM NO NC COM NO
FLT RELAY
S POWER
RESET
PW
IN
NO COM NC – + CAL
S
POWER OUT
– + + –
BLACK
RED
YELLOW
WHITE
GREEN
POINTWATCH DETECTOR
ISOLATED OUTPUT
CURRENT LOOP
CHASSIS GROUND
POWER
SENSOR
EXTERNAL RESET
HIGH ALARM
HIGH ALARM / OC
AUX. ALARM
AUX. ALARM / OC
LOW ALARM
LOW ALARM / OC
FAULT
FAULT / OC
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
–
+
+
–
+
–
18 TO 32VDC
GROUND
POWER
SIGNAL
HIGH
ALARM
AUXILIARY
ALARM
LOW
ALARM
FAULT
RESET
24 VDC
+ –
2
4-20 MA
A2034
R8471 CONTROLLER
*
*
*NO CONNECTION
Figure 11—A Typical System, Infiniti Transmitter with PointWatch Wired to R8471 Controller, Non-Isolated Current Output