AO2040/CALDOS Advance Optima Continuous Gas Analyzers

Use air as the ignition suppression gas (quality per lS0 8573-1, class 3; seeOperating Specifications” section, page 20).
Mechanical treatment of the ignition suppression gas line can lead to contamina-tion of the gas line.
When the contamination gets to the ignition suppression gas valve, the valve doesnot close

completely and the ignition suppression gas flows into the housing withthe full working pressure ofp,=

250-500 kPa (= 2.5-5 bar). An indication for apossible damage to the housing is an outward vaulting of the display and control
unit key pad.
For a reliable retention of the contamination it is absolutely necessary to install thedelivered compressed air conditioning filter in the ignition suppression gas line.

1 Cable opening M20 for power supply on the control unit for the pressurizedenclosure system

2 Cable openings for internal wiring connections

3 Connection plate with 6 black cable openings M20 for non-intrinsically safewiring (some cable openings are used for internal wiring connections)

Metallic cable opening M20 for the shielded system bus cable of the

4 A02060-… analyzer module
5 Cable opening M20 for the 24-VDC connection cable of theA02060-… analyzer module
Potential compensation connectors67 3 light blue cable openings M20 for intrinsically safe wiring

AO2040

The M20 threaded connectors are suitable for cables with outer diameters of6-12 mm.
.Only the manufacturer’s original equipment plugs should be used to close off thethreaded cable connectors.
Unused cable connectors must be closed off with factory-provided plugs.
Securely tighten the cap nuts on the unused cable connectors (torque to 2.5 Nm).

Route the condensate monitor’s intrinsically safe signal leads through a bright bluecable connection and

connect them to the terminals E1 and E2 on the right side ofthe ER 144AVEx isolation amplifier.
The total length of the connecting leads should not exceed 75 meters. install thesupplied 100-k resistor

parallel to the sensor and as close to the sensor aspossible. The 100-kΩ resistor is already installed

on the sensor in the stainlesssteel version of the condensate monitor.