TS4000H
8
Figure 1: Base Unit
2.5 Interface Module
The TS4000H Interface Module is encapsulated in an anodized aluminum housing enabling
sensor information to be processed at the point of detection. The TS4000H provides a 4-20 mA
output signal proportional to 0 to 100% FS gas concentration at the Base Unit.
The Interface Module includes the following features:
Galvanically isolated Intrinsic Safety Barrier to the internal electronics of the
Interface Module
Electrical conditioning circuitry for the electrochemical cell
Mechanical and electrical interface for the electrochemical cell
Explosion proof seal from the Interface Module to the Base Unit
One I/O pair for digital serial communication to and from the Base Unit and
Interface Module
One +24 VDC / COM GND pair for power into the Interface Module
Monitored Faults:
data memory failure, failed to zero (during calibration), and failed to
calibrate.
For engineering specifications covering the electrochemical cell and control electronics refer to
Section 9.5.
