Electronic control unit E713

General information
The E713 is an electronics unit designed to record and process signals from ZIROX® oxygen probes. It converts probe signals to oxygen concentration using the Nernst equation and provides measuring-value output via standard analog interfaces. The unit supplies probe power and controls heating for heated ZIROX® probes. The E713 is available in variants for panel mounting or DIN-rail installation and can be delivered together with an optional pump module in a steel field enclosure.

Applications / Features

• Signal acquisition and processing for ZIROX® oxygen probes
• Measuring-value output via 4-20 mA (standard), optional 0/2-10 V
• Power supply and heating control for heated probes (heating output up to 5 A)
• Process monitoring and integration into control systems
• Optional digital interface (RS232) and calibration via RS232

Technical data

• Signal input: cell and thermoelectric voltage from ZIROX® probes
• Measuring range: 0...20.64 Vol.-% O2 (expandable to 100 Vol.-% on request)
• Accuracy: relative error < 5 % (typical)
• Reference gas supply: none built-in (can be provided via optional pump module)
• Display: LCD dot-matrix, 2 x 16 characters (plain text)
• Keypad: 2 foil keys
• Analog output: 4...20 mA (corresponds to 0...20 Vol.-% O2), optional 0/2-10 V; galvanic isolation up to 500 V DC
• Digital interface: RS232 (optional)
• Power supply: 24 V DC ±10 %, typical device current approx. 60 mA (plus probe heating current)
• Heating control: 24 V DC, max. 5 A
• Dimensions (panel housing): 96 x 96 x 150 mm³; (DIN-rail module): 90 x 75 x 55 mm³
• Weight: approx. 0.3 kg (panel variant)
• Protection degree: IP22 (panel variant) / IP20 (DIN-rail module)
• Operating temperature: 0...+40 °C (standard) / up to +50 °C depending on variant; humidity 0...95 % rel.
• Storage temperature: -20...+50 °C (standard) / up to +60 °C depending on variant

Characteristics / Technical specifications

• Low-cost electronics option for control-cabinet or DIN-rail installation
• Signal processing according to the Nernst equation for ZIROX® probes
• Standard analog output 4-20 mA; optional interfaces and calibration
• 24 V DC supply with integrated heating control for heated probes (max. 5 A)
• Flexible measuring range and optional configurations on request