Det-Tronics U9500 Infiniti Gas Transmitter - Manual (Page 6)

95-8444 4 10.1
ImPORTANT SAFETy NOTES
Warning
Do not apply power to the system with the
enclosure cover removed unless the area has
been de-classified. Do not open the enclosure in a
hazardous area when power is applied.
CaUTiOn
The wiring procedures in this manual are intended
to ensure proper functioning of the device under
normal conditions. However, because of the
many variations in wiring codes and regulations,
total compliance to these ordinances cannot be
guaranteed. Be certain that all wiring complies
with applicable regulations that relate to the
installation of electrical equipment in a hazardous
area. If in doubt, consult a qualified official before
wiring the system.
The Infiniti contains semiconductor devices
that are susceptible to damage by electrostatic
discharge. An electrostatic charge can build
up on the skin and discharge when an object is
touched. Therefore, use caution when handling
the device, taking care not to touch the terminals
or electronic components. Observe the normal
precautions for handling electrostatic sensitive
devices.
To minimize the risk of damage, handle the
transmitter module by the edges only. Do not
touch the circuit board, or electronic components.
The fault detection circuitry does not monitor the
operation of external response equipment or the
external wiring to these devices. It is important
that these devices be checked periodically to
ensure that they are operational.
Exercise caution if an over-range reading is
indicated, since a dangerous condition could exist.
INSTALLATION
WIRING REQUIREMENTS
• Install per local installation practices and in
accordance with local authority having jurisdiction.
• See Figures 2 and 3 for wiring size and maximum
distance from the power supply to the transmitter.
iMPOrTanT
Proper installation practices must be followed
to ensure that condensation does not enter the
junction box and interfere with the electronic
circuitry. Refer to local installation codes.
WIRING PROCEDURE
The following procedure should be used for installing
and wiring the Infiniti Transmitter.
Refer to these figures and table when installing and
wiring the Infiniti:
Figure 1 — Infiniti Transmitter Mounting Dimensions
Figure 2 — Transmitter Wiring Requirements for
Toxic and Oxygen Models with Relays
Figure 3 — Transmitter Wiring Requirements for
Combustible Models with Relays
Figure 4 — Field Wiring Terminal with Relay Option
Figure 5 — Field Wiring Terminal without Relay
Option
Figure 6 — Transient Suppression for Inductive
Loads
Table 2 — Wiring Size and Maximum Distance from
Transmitter to Sensor (for applications
where a sensor termination box is used)
TYPICAL SYSTEM WIRING
Refer to these typical system wiring diagrams for
guidance when installing and wiring the Infiniti:
Figure 7 -— A Typical System, Infiniti Transmitter with
a Combustible Gas Sensor, Isolated
Current Output and Relay Outputs
Figure 8 — A Typical System, Infiniti Transmitter
with a Toxic Gas/Oxygen Sensor, Non-
Isolated Current Output and Relay
Outputs
Figure 9 — A Typical System, Infiniti Transmitter with
a PointWatch Detector and Non-Isolated
Current Output
Figure 10 — A Typical System, Infiniti Transmitter with
a PIRECL PointWatch Eclipse Detector
and Non-Isolated Current Output