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Stox-O2 Smart Oxygen Sensor Device

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Stox-O2 Smart Oxygen Sensor Device

· 4-20mA standard two-wire and RS485 Modbus-RTU output, 24V DC. power supply.
· Detects single gas + temperature and humidity at the same time.
· With calibration, sensor performance.
· Fast signal stability time at power on.
· Suitable for indoor and outdoor environments, sensor can work in -40 to 55 ℃.
· Response time is fast and has a stable zero point without drift, anti-electromagnetic interference ability.
· Long lifetime, anti-poisoning.
· Integrated safety protection enables use in potentially explosive environments.
· Electronic circuit boards have a dust and corrosion resistant coating.
· Small size.
· RoHS approved.

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Industrial Process Gas Device

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产品描述

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Overview

The Stox Smart Oxygen Sensor Device is an intelligent sensor device from EC Sense, which has a 4-20mA two-wire and a RS485 Modbus RTU output signal. It uses an intelligent microprocessor with high-reliability solid polymer electrochemical gas sensor technology and intelligent algorithm calculation. The Stox Device is a smart solution for industrial safety applications, combining temperature and humidity in one sensing device.

The intelligent Gas Sensor Device provides a self-test, which evaluates the sensor performance without a gas measurement. Therefore, it is the excellent solution for smart home and IoT applications. The data is put out through the the output signal or RS485 transmission command, which makes it easy and convenient to identify the right time to perform maintenance and replacement.

Each Stox Sensor Device has been professionally calibrated with the gas. It can be instantly used without prior warm-up time and the calibration information is stored in the flash chip. There is a calibration software from EC Sense in case a recalibration should be performed with the RS485 output or the 4-20mA output signal should be corrected.

The Stox Gas Sensor Device has a standard 4-20mA two-wire or RS485 Modbus RTU output signal that allows for quick device and system setup or connection to a display, DCS, PLC and other systems.

Principle

Stox Sensor Device is a durable product. It converts the original small current signals of the gas sensors into a standard 4-20mA or RS485 Modbus-RTU output through a digital circuit.

The Sensor Device uses the Solid Polymer Electrochemical Sensing Technology. It employs a three-electrode arrangement - the working, the counter and the reference electrodes - in which concentration measurements can be performed continuously and the sensor operates at a fixed potential. The gas of interest (target gas) diffuses through a diffusion barrier, like a capillary, into the cell to the working electrode, where an electrochemical reaction takes place. Oxidation and reduction reactions are happening simultaniously. The current flowing through the cell is direct proportional to the concentration of the target gas. A reference electrode keeps the potential constant together with a potentiostat.

Specification

Gas Sensor Specifications
Principle	Solid Polymer Electrochemical Sensing Technology
Accuracy	± 5% Full scale
Repeatability	< ± 2%
Linearity	Linear
Long-Term Drift	< 1% / month
Expected Lifetime	> 3 years

Temperature & Relative Humidity Sensor Specification
Parameter	Range	Resolution	Accuracy	Repeatability	Response Time	Long-Term Drift
Temperature	-40 to 85°C	0.01°C	± 0.2°C	0.1°C	< 5 to 30s @ t63%	< 0.02°C / years
Humidity	40-100%RH	0.01%RH	± 2%RH	0.1%RH	8s @ t63%	< 0.25%RH / years

Electrical Specifications
Optional Output Signal	4-20mA two-wires (Only gas sensor ouput, without temperature and humidity)
Optional Output Signal	Or RS485 Modbus-RTU (Gas with temperature and humidity sensor signal output)
Fault Output	3.5mA Fault Signal: Sensor signal weak
	3mA Fault Signal: Sensor failure or sensor disconnected
	RS485 Modbus-RTU output with sensor life and performance detection and early sensor failure warning
Supply Voltage	12 to 24V DC
Supply Current	3 to 22mA
Power Consumption	< 0.6W
Maximum Loop Resistance	< 500R@24V DC

Environment Specifications
Operating Temperature	Sensor can work from -40 to +55℃
Operating Humidity	15-95% RH. Non-condensing
Operating Pressure	Atmospheric pressure ± 10%
Storage Temperature	0 to 20℃

Mechanical Specifications
Size	39 x 130mm
Weight	135g
Power Cable length	1m
Warranty	12 months
Package Size	185 x 150 x 108mm

Product	Gas Formula	Partnumber	Range	Resolution	Response Time
Smart Oxygen Sensor Device	O₂	05-Stox-O₂-25%-01	0-25%vol	0.01%vol	< 3s (T90 < 30s)

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From 23 to 25 March 2021, EC Sense participated in the National Affiliate Center in Shanghai

From March 23 to 25, 2021, EC Sense participated in the AWE2021 China Home Appliances and Consumer Electronics Expo held at the Shanghai National Association Center.This AWE exhibition will cover six venues in the National Convention and Exhibition Center, presenting innovative products and technical solutions in the past two years. The exhibition categories will cover traditional home appliances and consumer electronics manufacturing industry, smart home, smart technology, 3C digital, core parts and so on

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Six venues will be built in the National Convention and Exhibition Center for this AWE Expo

At the EC Sense booth, you can also see our products on display, which focus on the full range of gas monitoring for intelligent living in human settlements.New EC Sense product -DGM10 dual gas module intelligent algorithm design, sensor performance and life determination signal output

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AWE2021 China Home Appliances and Consumer Electronics Expo held by Shanghai National Association Center

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