Gas analyser

Rapidox 2100 OEM-SIL2

Measures: O₂

The Rapidox 2100 OEM-SIL2 is a high-performance zirconia oxygen (O2) analyser, designed to meet the SIL2 requirements of IEC 61508/61511 under high demand use for safety integrity, as part of a Safety Instrumented System (SIS). The analyser design uses two microprocessors that continuously monitor the state of operation, quality of readings and the integrity of the digital & analogue outputs and the alarm relays. The likelihood of a fault being undetected is reduced by several orders of magnitude compared with a non-SIL2 equivalent product.

Rapidox OEM Gas Analysers Single Gas

Datasheet

Overview

Zirconia oxygen sensors are extremely rugged and particularly suitable for monitoring inert atmospheres and aggressive industrial applications directly within manufacturing processes such as additive manufacturing (3D printers), soldering ovens and furnaces. High temperature (650°C) and vacuum applications are particularly suited to this model. The SIL2 version is particularly suited to applications where there is an additional risk of human suffocation, and the sensor needs to be relied upon to warn correctly of the presence of a suffocating atmosphere. The SIL2 design shrinks the failure window where a dormant fault condition could exist from days or weeks to just a few minutes.

The Rapidox 2100 OEM-SIL2 analyser is supplied in a custom DIN rail enclosure with or without local display and keypad (these are for programming and not in the scope of SIL2). The sensor cable can be made to any length up to 25m and there are a choice of sensor mounting options including aluminium and stainless manifolds as well as vacuum fittings (ISO-KF and CF). It has fully programmable analogue (voltage and current) outputs and alarm relays as well as RS232 / RS485 digital signalling as standard. In addition to the standard Rapidox digital communications protocol and software, Modbus-RTU is included as standard. The analyser is designed specifically for seamless integration to PLC systems.

Key features

• SIL2 dual microprocessor designed to meet the requirements of IEC 61598/61511
• Auto-test function set every ten (10) minutes to test alarm relay operation by injecting a false sensor signal without disruption to the attached equipment
• Set of LED status indicators (continuously integrity tested)
• Multiple high-spec electrical alarm relays with built in redundancy
• Digital outputs tested for the flow of data without interruption
• Voltage (0-5V) and current (4-20mA) outputs checked for integrity
• Alarm indications such as sounder are continuously monitored for integrity
• Master alarm and Master relay added
• Zirconia sensor supplied with bespoke cable
• Fast and accurate measurement of oxygen
• Fully programmable analogue outputs
• Data logging software
• Type K thermocouple option (out of the scope of SIL2)
• 24Vdc 20W power
• Pre-calibrated sensors for uninterrupted service