Calex ExTemp Series Operator's Manual - Page 12

Browse online or download pdf Operator's Manual for Temperature Controller Calex ExTemp Series. Calex ExTemp Series 17 pages. Intrinsically safe infrared temperature sensor and lct loop configuration tool

Print Page
LOOP CONFIGURATION TOOL (LCT)
The Loop Configuration Tool model LCT is a configuration
adapter for ExTemp infrared temperature sensors.
It is designed to be connected to the 4 to 20 mA current loop on
the safe side of an Intrinsically Safe barrier or isolator, and to a
Windows PC via USB.
This manual describes how to connect the LCT and use it to
configure the sensor. For information on connecting and using
the sensor itself, please refer to the previous sections of this
manual.
WARNING
This device MUST NOT be used in hazardous areas. It is not certified for use
in explosive atmospheres and may only be connected on the safe side of a
suitable, certified Intrinsically Safe barrier or isolator.
Do not attempt to repair a faulty unit. Contact the vendor to arrange a return.

ELECTRICAL CONNECTION

Connect the device to the 4 to 20 mA measurement loop via the hook-type connectors. For
reliable communications, the total resistance R
range specified on the connection diagrams. You may need to connect a resistor in series with
the existing measurement instrumentation on the 4 to 20 mA loop to ensure this.
Hazardous Area
(All Zones IIC and IIIC)
To the sensor
WIRE IDENTIFICATION - LCT
The LCT connectors are colour coded as follows:
Colour of Wire and Hook Connector
Red
Black
12
on the 4 to 20 mA loop should be within the
L
Safe Area
(Non-Hazardous)
Intrinsically Safe
isolator or barrier
Polarity
+
-
LCT
PC with
software
Measurement
instrumentation
Power supply