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0001

The S401 is designed to be easy to use, affordable and it's offering a wide measurement range.

Features

Videos
"S401: Installtion of a flow meter under pressure"

0002

With a wide measuring range, a high resolution and sampling rate, the S421 provides a very fast and precise measurement.

Features

0003

The S415 and S418 offer reliable and efficient compressed air flow and consumption measurement directly at the point of use.

Features

Videos
"S418: product video"

0004

Features

0005

The S450 is designed specifically for measuring compressed air flow in harsh environments, by providing a robust metal enclosure (IP67).

Features

Videos
"S401: Installtion of a flow meter under pressure"

0006

With the NEMA 4X enclosure (IP67) the S452 inline version allows compressed air flow measurement in all-weather applications. 

Features

0007

The S430 is made for the use in wet and hot air, featuring long-term stability, wide turn-down ratio and good temperature stability.

Features

Videos
"S430: Installation and configuration"

0008

The S460 offers high accuracy flow measurement, easy installation for permanent and temporary use and excellent price performance.

Features

0009

The S220 provides reliable and long term stable dew point monitoring in industrial applications, down to –100 °C Td.

Features

0010

The S212 provides reliable and long term stable dew point monitoring in industrial applications down to -50 °C Td.

Features

0011

S215 provides reliable and long term stable dew point monitoring in industrial applications, from -20 … +50 °C TD.

Features

0012

The S217 provides reliable and long term stable dew point monitoring in industrial applications.

Features

0013

The S201 provides reliable and long term stable dew point monitoring in industrial applications, down -60 °C Td

Features

0014

S230 / S231 (Ex area) provide reliable, long term stable dew point monitoring in industrial or hazardous applications.

Features

0015

The S305 offers simple and inexpensive dew point monitoring, by serving a measuring and display device.

Features

0016

The S505 is the ideal tool to measure the dew point in your compressed air system, enabling users to check the performance of their desiccant or fridge air driers.

Features

0017

The S330 / S331 is a very powerful yet cost effective new data logger and display solution, connectable with all STUO Sensors.

Features

0018

The S320 compressed air meter provides a cost effective display solution for industrial applications.

Features

0019

The S551 offers the ideal data logger for energy analysis (ISO 50001) and air audits (ISO 11011).

Features

0020

S4M is the complete monitoring solution for managing energy and helping with real-time data to identify potential issues before they happen.

Features

0021

The S120 monitors oil contents of compressed air and gases permanently or for spot checks when used as a portable unit in conjunction with S551.

Features

0022

The S130 / S132 is a new generation laser particle counter optimized for applications in compressed air or compressed gases.

Features

0023

Software-guided measurements and a time-saving setup into a mobile, touchscreen-controlled multi-tool.

Features

0024

The S601 measures and monitors contaminants in real time, giving businesses security that its products and customers are protected.

Features

0025

The S530 detects leaking through tubes and tanks by an ultrasonic sound, even from several meters distance.

Features

0026

The S110 Power Meter is designed for easy installation and high accuracy.

Features

0027

High accurate and affordable industrial pressure sensor for manifold applications.

Features

0028

High quality temperature sensors for manifold  industrial applications.

Features

0029

The Miniflex 1000 current clamp sensor is able to measure the current carried on a power conductor up to a value of 1000 Aac.

Features

0030

Features

Videos
"S401: Installtion of a flow meter under pressure"

0031

The S418-V is designed to monitor performance vacuum pumps, by offering convenient installation, great flexibility and a very short response time.

Features

0033

The S435 Vortex Flow Meter measures mass flow and consumption in saturated steam with automatic density compensation.

Features

0034

The S531 ultrasonic leak detector for compressed air and gases that helps users quickly find and record leakages in their system.

Features

Videos
"S531: Operating Instructions for S531 in the Non-LMS Mode"
"S531 + LMS: S531 Leak detector in use with the LMS Leak Management Software"

0036

The S520 offers a single hand held unit to perform high reliable on site measurements in compressed air systems.

Features

0038

The S402 OEM is made for compressed air system and solution providers, offering an affordable and economic flow meter for compressed air and gases.

Features

0039

The S462 offers water flow measurement with easy installation, no process downtime, no pressure loss or leak.

Features

Videos
"S462: Configuration & Installtion"

0040

The cloud based intuitive LMS helps to manage compressed air leaks.

Features

0041

The S215 provides reliable dew point measurements to monitor industrial processes. The range of -20 … +50 °C Td makes it perfect for fridge drier monitoring.

Features

0042

The S211 with a range of -60 … +20 °C Td is the ideal tool for monitoring desiccant dryers.

Features

0043

The S220 provides reliable dew point measurement for high tech applications and has a range of -100 … +20 °C Td.

Features

How to ensure compressed air quality according to ISO 8573-1?
The ISO 8573-1 offers operate a guideline to define the compressed air quality and divides it into classes. For the operators, the most important step is to choose the most suited measurement tools which works under pressure. Until lately, it was only possible to get accurate results when preforming an on site sampling and later evaluating the results in external labs, as described in the other parts of the ISO 8573. 

But this is costly, complicated and time-consuming, furthermore the described methods are often not feasible to be performed on site, heavy interruptions and system changes are needed. Another downside is, that compressed air users have no chance to react to on-site changes immediately, as they need to wait for the laboratory results.

SUTO is solving these problems by offering live monitoring solutions for compressed air quality measurements according to ISO 8573-1. The advanced sensors are providing real time readings on site, are easy to install under pressure and enable users to react immediately to changes in the compressor system. This saves customers not only investments on audits, but also prevents production failures and ensures a high reliable process.
Why is compressed air quality a crucial parameter in a compressed air system?
Compressed air is used in almost any industrial process, ranging from food and beverage to medical applications. Thereby, the compressed air is sometimes in direct contact with the products, for example in packing processes, where packing containers are blown out using compressed air. Considering that the compressed air system is part of the process and can be in direct contact with the products, it is very important to monitor the air quality.

The ISO 8573-1 has defined quality classes for the 3 major parameters, as they are oil contents, particle concentration and pressure dew point (water concentration), this helps users to define the air quality which might be in contact with the end product, according to defined standards. Modern filtration systems are capable to filter out any unwanted contamination of the compressed air used, most likely introduced by the compressors. But in case filters fail or degrade, users must have a reliable real-time monitoring to react on these failures, otherwise production output might be contaminated or even has to be called back from consumers. 

In such cases, the damage on the product but also on the brand reputation can have a huge impact. Only a continuous monitoring of the compressed air quality helps to prevent this from happening.
What is the meaning of the ISO 8573-1 compressed air quality classes?

The ISO 8573-1 offers users are guideline to classify the impurities of the compressed air. Therefore, the ISO 8573-1 has defined contamination limits for the three parameters oil, particles and water. These limit values are represented in classes of 1 to typically 5 or 6. Each parameter is considered as a single measurement value, so systems can have different ISO 8573 classes throughout the different parameters.

For example, if a system is classified as 1.2.1 according to the ISO 8573-1 it is typically meant that the particle concentration is class 1, the dew point is class 2 and the oil concentration is class 1. For particle concentration, the measurement is divided into 3 channels in regard to the particle size “d”: 0.1 < d ≤ 0.5 µm; 0.5 < d ≤ 1.0 µm; 1.0 < d ≤ 5.0 µm. Each size channel has its own defined limit values according to the ISO 8573-1. The water or humidity concentration is defined as pressure dew point, representing the humidity levels in the compressed air.

Oil concentration is measured in milligrams per cubic-meter (mg/m3) of air. The ISO 8573-1 helps operators of compressed air systems to define the quality of the air and unifies the references and limit values to be used, making it easy to classify systems.
Which measurement principles are used in SUTO oil vapor sensor and particle counters?
SUTO oil vapor sensors used in the S120, S600 and other products are PID (Photo Ionization Detectors) sensors. PID sensors are using UV lamps to ionize the hydro-carbon molecules in the air passing by the sensor element, through the ionization the electrical charge of the molecule changes, this change can be detected by the sensor and the unit are able to quantify the value of hydro-carbons in the air. The measurement of oil vapor is mandatory according to the ISO 8573-1, it represents the oil contamination in the compressed air system. PID sensors are the state of the art when it comes to real-time oil measurement in compressed air systems.

SUTO particle counters are based on laser optical sensors. A high efficient laser beam is crossing the air stream, if now an airborne particle passes through the laser beam it will scatter the light. The light-sensitive sensor will detect this scattering and count the particles. Based on the different scattering of different particle sizes, the sensor is able to not only give a quantification but also able to detect the size range of the particles as defined and according to the ISO 8573-1 and ISO 8573-4. 
Why is a live monitoring of the quality parameters so important?
Over the past years, it was a common practice to take on-site air samples and analyze them in external labs for quality audits. These external analyzes have one very big drawback, results are available within weeks and there is no monitoring or real-time measurement of the compressed air quality possible. This means, by realizing the measurement with probe sampling and external lab analyzes, the compressed air quality is always only a snapshot of the air quality at this particular date and time. But if in between two compressed air quality audits something would degrade or filters would fail, it could not be detected by the operators.

SUTO systems are offering live on-site monitoring solutions for a real-time measurement of the air quality. This enables to react in time when something is going wrong. By real-time compressed air quality measurements, operators are enabled to act on changes the moment they are happening and not when it's already too late.
Where are compressed air impurities typically are coming from?
A modern compressed air system consists of a compressor which is then followed by filters and air dryers, a so-called filtration system. These filters are needed, because compressors are sucking in ambient air and introduce any impurity of the ambient air into the system. So even an oil-free compressor might introduce oil into the system, since oil vapor can already be part of the intake air.

Furthermore, water and particles in the ambient are also sucked in, compressed and introduced to the system. Multiple filters after the compressor are used to remove unwanted contamination, but small particles, water vapor and oil vapor will still pass these filters. Therefore, driers and activated carbon filters are needed to further filtrate the air.

But also the piping system itself contains components which might introduce impurities. Valves, sealing, connections, quick couplings or other components are often sources of contamination.