Detcon TP-700 - Field Wiring

Model TP-700
TP-700 Instruction Manual Rev. 4.1 Page 10 of 42
Plug any unused
ports
Explosion Proof
Housing
(J-Box)
Drain
TP-700
Sensor
Assembly
Conduit
"T"
EYS Seal Fitting
(+)
mA
(-)
A(+)
B(-)
Wiring to
Sensor Assembly
Wht
Blu
Red
Grn
Blk
Explosion
Proof
Junction Box
(+)
mA
(-)
N/U
A(+)
B(-)
Customer
Supplied Wiring
Transient Protection Module
(TPM) P/N 500-003087-100
Mount TPM in Explosion
Proof Enclosure to ground
unit properly. Mount to
bottom of enclosure using
6-32 screws.
+
6-Pin Pheonix Plug
P/N 306-175705-100
MODEL
TP-700
detcon inc.
H
2 S Sensor
Figure 10 Typical Installation
NOTE: For products utilizing the aluminum junction box option, the conduit seal shall be placed
at the entry to the junction box (see Figure 10 as an example). For products utilizing the stainless
steel junction box option, the conduit seal shall be placed within 18” of the enclosure. Crouse
Hinds type EYS2, EYD2 or equivalent are suitable for this purpose.
NOTE: The Detcon Warranty does not cover water damage resulting from water leaking into
the enclosure through the conduit connections. However, since the electronics are 100% epoxy
encapsulated, only the wire terminations could get wet. Moisture could cause abnormal
operation and possibly corrosion to the terminal connections, but permanent damage to the sensor
would not be expected.
NOTE: Any unused ports should be blocked with suitable ¾” male NPT plugs. Detcon Supplies
one ¾” NPT male plug with their accessory J-box enclosures. If connections are other than ¾”
NPT, use an appropriate male plug of like construction material.
2.6 Field Wiring
Detcon Model TP-700 solid-state H
2
S sensor assemblies require three conductor connections between power
supplies and host electronic controller’s 4-20mA output, and 2 conductor connections for the Modbus™ RS-485
serial interface. Wiring designations are + (DC), – (DC), mA (sensor signal), and Modbus™ RS-485 A (+), and
B (-). Maximum wire size for termination in the Detcon J-Box accessory is 14 gauge.