Operating instructions

AMC-DTR Sensor Transmitter User Manual

4.9 Sensor Installation (with Smart/Simple Sensor Definition)

3-wire electrochemical and catalytic bead sensors for toxic / oxygen and LEL combustible gas

detection are offer as an industry standard. These are referred to as Simple sensors. The

AMC-DTR design accommodates users wishing to continue use of their existing simple sensors

by accepting electrochemical types into TB2 of the DTR-10-0232 Display Assembly or catalytic

bead types into TB1 of the DTR-10-0233 I/O Power Supply (mounted to the bottom of the

enclosure). The AMC-DTR Smart Sensor interface also uses proven electrochemical

technology for toxic / oxygen and catalytic bead for LEL combustibles BUT has taken this

technology a step further. A tiny memory IC is incorporated into AMC-DTR factory supplied

Smart sensors allowing them to contain the entire database of AMC-DTR parameters onboard

the replaceable Smart Sensor assembly. This unique Smart Sensor Interface may be used to

configure smart sensors and / or AMC-DTR’s from a PC rather than entering all variables via the

magnetic keypad.

Electrochemical and catalytic bead smart sensors both plug into the Smart Sensor Housing

that connects to AMC-DTR electronics with its 8-conductor Smart Sensor Interface cable.

CAUTION:

Smart sensor housing with electrochemical toxic / oxygen sensors must connect to S1

located on the back of the DTR-10-0232 Display Assembly (See Figure 11). Smart

sensor housing with catalytic bead combustible sensors must connect to S1 located

on the optional DTR-10-0233 I/O Power Supply PCB assembly (See Figure 12).

The AMC-DTR design accommodates a range of sensor technologies, accepting

electrochemical types into TB2 of the DTR-10-0232 Display Assembly, solid state, IR or

catalytic bead types into TB1 of the DTR-10-0233 I/O Power Supply (mounted to the bottom of

the enclosure). The following sections show each.

When the Smart sensor is used, only the Sensor Module needs to be replaced when the sensor

needs replacement. To replace the Sensor Module, turn the power off, unscrew the sensor

housing cover from the sensor housing base (See Figure 10) and remove the sensor module.

Install the new sensor module and turn the power on. The AMC-DTR will power up and

configure with the new sensor module.

SENSOR HOUSING COVER

SENSOR HOUSING BASE

GROUND WIRE

8-CONDUCTOR SMART

SENSOR INTERFACE CABLE

SENSOR MODULE

Figure 10: Smart Sensor Housing Assembly