The online ozone outlet concentration measurement 4-20mA or RS485 output device of the ozone monitor is developed by Shenzhen Wanyi Technology Co., Ltd. using the technology of American Environmental Sensor Technology Company, with a research and development process of nearly 20 years, to create the CESTSEN brand gas detector.

The company focuses on the research and development, production, sales, and after-sales service of gas detection equipment. The core components of the equipment, sensors, are provided by established sensor manufacturers in the United States, the United Kingdom, Germany, and other countries, and can only be used after careful selection by Wanyi Technology's engineering team. The complete set of gas distribution instruments is calibrated strictly in the laboratory. Wanyi Technology strives to create gas detection equipment with high accuracy, good safety, easy operation, and reliable quality for industry customers.

The EST-301-O3 ozone monitoring instrument is a fixed gas concentration measuring instrument that adopts high-precision circuit design. The core uses original imported sensor chips, which have been developed and calibrated by Wanyi Technology, signal amplification, calibration, and strict testing before being sent out of the factory.

The instrument design and production shall comply with relevant national standards:

GB/T18883-2002 "Indoor Air Quality Standards" GB3095-1996 "Environmental Air Quality Standards"
GB50325-2010 "Code for Indoor Environmental Pollution Control of Civil Building Engineering"
GB50325-2001 Code for Indoor Environmental Pollution Control of Civil Building Engineering
GB12358-2006 "General Technical Requirements for Workplace Gas Detection and Alarm Devices" Industrial Standard
EU Directive 2002/231/CE Taiwan Indoor Air Quality Standard
EMC electromagnetic compatibility related testing standards, European standard EN55022, American standard FCC

The EST-301-O3 ozone detector is mainly used for:

Gas storage leakage monitoring for pharmaceutical factories, food factories, hospitals, ozone disinfection residue detection for drinking water disinfection, disinfection, bleaching, odor removal, etc., as well as measurement of ozone peak and concentration residue for food refrigeration, sterile air purification, etc.

Measurement of ozone concentration in electrostatic precipitators, ozone generators, air purifiers, fresh air systems, and indoor air.

Functional Features

Explosion proof safety chamber design, in compliance with IEC60079 electrical explosion-proof requirements; Aluminum explosion-proof shell has good sealing, corrosion resistance, long life, low temperature resistance, resistance to sulfide and silane gas poisoning; Suitable for use on offshore platforms, as well as in various harsh environments such as high temperature and high humidity.

Adopting advanced imported sensors with high precision, long service life, repeatability, and stability.

Automatic recognition of sensor probes, which can use sensor probes for different types of gases; After replacing the sensor probe, the program automatically recognizes and obtains parameters such as gas type, range, low point alarm value, and high point alarm value.

Equipped with backlit LCD, on-site display of concentration values, on-site and remote maintenance settings do not affect the control unit; The non-contact method of magnetic induction completes calibration and parameter setting.

Four high brightness LED lights, respectively indicating power, low, high alarms, and function prompts, with programmable low and high alarm action values; At the same time, the sound alarm will emit an alarm sound to immediately inform the on-site staff.

Simultaneously having both digital and analog signal outputs, the analog signal is a standard three wire 4-20mA current signal; The digital signal is RS485, which can easily communicate with the upper computer.

A password can be set to enter the menu to prevent other personnel from operating or changing parameters at will, ensuring safety and reliability.

EST-301-O3 technical specifications:

working voltage	12-30VDC	repeatability	≤2%；
Working current	20-30mA (static)	stability	≤± 2% F.S/6h (zero point) ≤± 5% F.S/6h (gain)
Display mode	Backlit 4-digit LCD display (optional)	operation temperature	-10 ℃~+40 ℃ (see sensor specifications for details)
Display units	PPM/%/% LEL/PPM (optional)	relative humidity	≤ 95% RH without solidification (see sensor specifications for details)
Measurement range	0-1000PPM/0-100%/0-100% LEL/0-2000PPM (optional)	atmospheric pressure	±10% atm
display resolution	1/10000 of the measuring range	signal output	Three wire system 4-20mA (analog) and RS485 (digital)
detection resolution	See sensor specifications for details	Distance	≤100m(4-20mA)、≤1000m(RS485)
Detection object	Toxic and harmful gases/oxygen/flammable gases/total volatile compounds (see sensor specifications for details)	Explosion proof grade	Ex d IIC T6
Detection Principle	Fixed potential electrochemistry/primary battery electrochemistry/catalytic combustion/UV ionization (see sensor specifications for details)	protection grade	IP65
detection	Diffusion type	Wiring method	M20 * 1.5 internal thread
response time	See sensor specifications for details	Installation method	Wall Mount
ALARM VALUE	Can be set (0 represents canceling the alarm)	Shell Material	Aluminum explosion-proof shell (main shell), stainless steel (accessories)
Alarm method	Two level sound and light alarm (external sound alarm, optional)	Dimensions	226*177*92mm
alarm error	≤± 5% alarm set value	Whole machine weight	About 1.5 kg
Contact capacity output	10A 250VAC

Wanyi Technology's "Internet of Things Monitoring Cloud Platform" is an efficient, stable, and secure application platform built between IoT applications and monitoring devices. It is device oriented, adaptable to multiple network environments and common data transmission protocols, and has strong practicality, ease of operation, and real-time data performance. It has multiple comparison methods for querying and has good data comparison effects. It can set alarm values through WeChat/SMS/email and other warning methods. It is mainly divided into two parts: data query and device management.