*myarchiexpo

EE85

Product catalog summary

Overview: The EE85 is a CO2 sensor optimized for building automation and process control applications. It utilizes Non-Dispersive Infrared (NDIR) technology for measuring CO2 concentrations and features a patented auto-calibration procedure for long-term stability.

Specifications:

Measuring Ranges: 0...2000ppm, 0...5000ppm, 0...10000ppm
Accuracy: Varies by range, with a maximum deviation of ±(100ppm + 5% of measuring value) for the 0...10000ppm range.
Response Time: Less than 195 seconds to reach 63% of the final value.
Temperature Dependence: Approximately 2ppm CO2/°C.
Long-term Stability: Approximately 20ppm per year.
Switch Output: Maximum switching voltage of 50V AC / 60V DC, with a maximum load of 0.7A at 50V AC and 1A at 24V DC.
Supply Voltage: 24V AC ±20% or 15 - 35V DC.
Current Consumption: Typical 10mA, maximum 0.5A for 0.3 seconds.
Warm-up Time: Less than 5 minutes.
Housing: PC with protection class IP65 for housing and IP20 for the probe.
Operating Conditions: Temperature range of -20...60°C (-4...140°F) and 0...95% RH (non-condensing).

Features:

Auto-calibration for compensating infrared source aging.
Dust protection due to no airflow through the sensing cell.
Simple installation with included mounting flange.
Compact size suitable for residential and commercial areas.

Applications: The EE85 is suitable for building automation and process control, particularly in residential and commercial areas.

Ordering Information: The EE85 can be ordered with different measuring ranges and probe lengths, as specified in the ordering guide.

Catalog excerpts

Duct mount CO2 Switch EE85 is optimized for building automation as well as for process control applications. It measures CO2 concentration based on the Non-Dispersive Infrared (NDIR) technology. A patented autocalibration procedure compensates for the aging of the infrared source and leads to outstanding long-term stability. The air from the duct flows through the probe into the EE85 enclosure and back into the duct. Inside the enclosure the air diffuses through a membrane into the CO2 sensing cell. As there is no flow through the sensing cell, this is very well protected against dust. EE85 is available with measuring ranges of 0...2000, 0…5000 or 0…10000ppm and with two probe lengths. The switch threshold and hysteresis can be set with potentiometers on the printed circuit board. The mounting flange included in the scope of supply facilitates installation in the ventilation ducts. Typical Applications building automation for residental and commercial areas process control very simple installation compact size auto-calibration Technical Data Measuring Values CO2 Measurement principle Sensing element Measuring range Accuracy at 25°C (77°F) and 1013mbar Response time τ Temperature dependence Long term stability Sample rate Non-Dispersive Infrared Technology (NDIR) E+E Dual Source Infrared System 0...2000 / 5000 / 10000ppm 0...2000ppm: < ± (50ppm +2% of measuring value) 0...5000ppm: < ± (50ppm +3% of measuring value) 0...10000ppm: < ± (100ppm +5% of measuring value) < 195s typ. 2ppm CO2/°C typ. 20ppm / year approx. 15s Max. switching voltage Max. switching load Min. switching load Contact material Switch Output Supply voltage Current consumption Warm up time Housing / protection class Cable gland Electrical connection Electromagnetic compatibility 2) Working temperature and conditions Storage temperature and conditions 1) minimum flow speed 1m/s (200ft/min) 2) warm up time for performance according to specification

Open the catalog to page 1

Dimensions (mm) Operation Principle Seal A...according to ordering guide Connection Diagram NO = normally open NC = normally closed WR = working range Order Example Ordering Guide MEASURING RANGE Measuring range: 0...5000ppm Model: CO2 Switch EE85 v1.8 / Modification rights reserved 151

Open the catalog to page 2