Product Overview

The Monicon IR80 is a high-quality, self-contained gas sensor using NDIR (Non-Dispersive Infra Red) technology to provide fast, reliable warnings against dangerous concentrations of carbon dioxide. The instrument can operate as a standalone unit or in conjunction with a controller or computer. It is housed in a compact, epoxy-coated aluminium enclosure. It is fully user programmable, and all user variables are stored in non-volatile memory (EEPROM) and retained indefinitely, even during total power failure.

Key Features

• Microprocessor-based design.
• Dual NDIR detectors and temperature compensation.
• "One Person" calibration and configuration via on-board pushbuttons.
• Gas concentration and instrument status are indicated on an 8-character alphanumeric dot-matrix display.
• Outputs/Interface: 4-20mA analogue output, voltage-free relay contacts, and RS485 digital interface.
• Complies with Electromagnetic Conformance (EMC) standards EN50081 and EN50082.

Applications

• Breweries.
• Landfill Sites.
• Food processing and Soft Drinks Manufacture.
• Cellars and Laboratories.
• Chemical Processing.
• Mushroom Farming and Greenhouses.

Technical Specifications

Specification	Value
Full-Scale Range	0-5% CO2
Supply Voltage	Nominal 24Vdc (operates from 20Vdc to 35Vdc)
Power Consumption	2W nominal, 2.3W maximum
Response Time (T90)	Typically less than 45 seconds
Analogue Output	4-20mA current source referenced to 0V
Analogue Output Load	100 Ohms typical, 500 Ohms maximum
Operating Temperature	-20 degrees C to +50 degrees C
Repeatability	+/- 2%
Resolution	1%
Recommended Calibration Interval	12 months (depending on application)

RS485 Digital Interface

• Operating Mode: Slave mode, half duplex, polled.
• Communication Parameters: 1200-N-8-1.
• Maximum Units on Loop: 100.
• Error Checking: 1 byte checksum.