S601 Stationary Compressed Air Purity Monitor for 24/7 Quality Measurement

Permanent 24/7 compressed air quality and purity monitoring according to ISO 8573-1.

Right Mark

All-in-one solution to measure ISO 8573-1 parameters

Right Mark

24/7 compressed air quality and purity monitoring

Right Mark

High-resolution 5" color touch screen

Right Mark

Integrated data Logger for online monitoring

Right Mark

Single compressed air inlet for a convenient setup

Right Mark

Robust metal cabinet for rough industrial applications

Right Mark

Plug & Play operation, no configuration needed

Right Mark

For Compressed Air, Nitrogen N2, Carbon dioxide CO2

The SUTO S601 Compressed Air Purity Monitor permanently measures and monitors compressed air contaminants like Dew Point, Oil Vapor, Particle Concentration and Pressure in real time. In doing so, the S601 brings together state-of-the-art technology in one easy to use package.

24/7 Compressed Air Quality and Purity Monitoring

Product contamination can ruin a business and harm its customers. The typical approach of spot checks and random testing of compressed air systems does not allow businesses to quickly react to contamination events. It also does not provide continual assurance that contamination levels are being kept under control. In the ever-changing world of production, real-time and permanent monitoring is crucial to protect your products’ integrity. The SUTO S601 monitors contaminants, giving businesses piece of mind that its products and customers are protected.

Compliance with the ISO 8573-1 Standard

With the advancement in technology and SUTO´s revolutionary sensors, the S601 is perfectly suited to monitor the air purity parameters in accordance to ISO 8573-1. Particle, dew point and oil vapor contamination are all continuously monitored and stored for later reporting. And this is all done in one single device.

Integrated Data Logger for Data Analysis

The data logging function ensures records are kept intact and stored. Real-time information can be then retrieved from the S601 by SCADA systems via Modbus outputs. The integrated color touch screen display also allows users to view all information locally.

Alarm Indication

Alarm points can be set to trigger if contaminants hit the selected limits. An optional external light or siren can be added to the alarm.

All Measurement Ranges at a glance
  • Particle measurement from 0.1 < d ≤ 0.5 µm, 0.5 < d ≤ 1.0 µm, 1.0 < d ≤ 5.0 µm
  • Pressure Measurement (0.3 … 1.5 MPa)
  • Dew point measurement from -100 to +20°C Td
  • Oil vapor measurement from 0,001 bis 5,000 mg/m³
Easy Installation and Connection

The S601 Stationary Compressed Air Purity Monitor is quick and easy to install, just connect the unit to power and the compressed air supplies with a user-friendly 6 mm quick connector. The Robust IP54 wall mountable casing provides high protection in industrial environments.

SUTO Exchange Service

The exchange calibration service eliminates downtime of the S601. It enables users to have a seamless record of their compressed air quality measurements. Get to know more about the SUTO Exchange Service here.

If you have any special request or further question, please contact us here. We are happy to help.

Read more

  • Permanent measurement and monitoring of compressed air quality in high-tech applications with strict purity requirements, such as medical air, pharmaceuticals, food and beverage, etc.
  • Ensuring compressed air quality standards according to ISO 8573-1.
  • The robust cabinet makes is well suited for rough industrial applications.


Particle concentration
AccuracyOption A1263:
30 ... 70 % von
d > 0.1 μm
90 ... 110 % von
d ≥ 0.3 μm
Option A1260:
50 % @
0.1 < d ≤ 0.15 μm
100 @ d > 0.15 μm
Selectable unitscn/m³, cn/ft³
Measuring rangeOption A1263:
0.1 < d ≤ 0.5 μm
0.5 < d ≤ 1.0 μm
1.0 < d ≤ 5.0 μm
5.0 μm < d
Option A1260:
0.3 < d ≤ 0.5 μm
0.5 < d ≤ 1.0 μm
1.0 < d ≤ 5.0 μm
5.0 μm < d
SensorLaser optical particle counter
Sampling rate1 min.
Flow rate2.83 l/min
Pressure Dew Point
Accuracy± 1 °C Td (0 ... 20 °C Td)
± 2 °C Td (-70 ... 0 °C Td)
± 3 °C Td (-100 ... -70 °C Td)
Selectable units°C, °F
Measuring range-100 ... +20 °C Td
SensorQCM + Polymer
Response time (t90)-20 °C Td -> -60 °C Td = < 240 sec
-60 °C Td -> -20°C Td = < 30 sec
@ 4 l/min
Oil vapor
Accuracy5 % of value +/- 0.003 mg/m³
Detection limit0.003 mg/m³
Resolution0.001 mg/m³
Selectable unitsmg/m³
Measuring range0.001 ... 5.000 mg/m³
SensorPID (Photoionisation detector)
UV lamp lifetime1 year or 6000 working hours, whichever comes first
Sampling rate1 sec.
Accuracy0.5 % FS
Measuring range0.1 ... 1.6 MPa(g)
SensorPiezo resistive sensor
Accuracy± 0.3 °C
Measuring range-30 ... +70 °C
Reference conditions
Selectable conditionsISO1217 20 °C 1000 mbar


Update rate1 / sec.
Alarm output
Relay2 x Changeover Relay (freely programmable)
Rating230 VAC, 3A
Power Supply
Voltage supply100 ... 240 VAC, 50/60 Hz
Current consumption50 VA
USBUSB Micro with OTG support


OthersDevice comes pre-configured
Configuration can be done via
on-screen touch
IntegratedTouchscreen, Size: 5“, Resolution:
800 x 480 px
Data Logger
StorageUp to 3 million recorded data sets
(10 channels each)
Process connectionBrass nickel-plated, FKM
HousingSheet steel, powder coated cabinet
Electrical connectionAC Clamp Terminals, M12, RJ45
Protection classIP54 (cover lid closed)
ProzessanschlussMicro quick connector, full
passthrough, male (1.5 m hose with
coupling included)
Weight15 kg
Operating conditions
MediumCompressed Air, Nitrogen N₂, Carbon dioxide CO₂ (software setting)
Medium qualityISO 8573-1: 4.4.4 or better
Medium temperature0 ... + 40 °C
Medium humidityMedium humidity < 40 % rH,
no condensation
Operating pressure0.3 ... 1.5 MPa(g)
Ambient temperature0 ... +50 °C
Ambient humidity0 ... 90 % rH
Storage temperature-10 ... +70 °C
Transport temperature-10 ... +70 °C


Successfully Copied


Info sheets
Successfully Copied


Successfully Copied

Ensuring Purity and Reliability to ISO 8573-1 Standards

ISO 8573-1 sets global standards for evaluating the purity classes of compressed air, considering particles, water, and oil. Meeting the strict criteria of industries like pharmaceuticals and food requires regular assessment of compressed air quality. The S601 Stationary Compressed Air Quality Monitor is crafted to align with ISO 8573-1 standards, providing a dependable method to assess and guarantee the purity of compressed air. Consistent monitoring with this monitor not only ensures the safety of processes and products but also mitigates production downtime and improves the overall reliability of the system.

ClassParticle ConcentrationPressure Dew PointOil Concentration
cn/m3ºC (ºF)mg/m3
0.1 < d ≤ 0.5 µm0.5 < d ≤ 1.0 µm1.0 < d ≤ 5.0 µm
0As specified by the equipment user or supplier and more stringent than class 1
1≤ 20,000≤ 400≤ 10≤ -70 (94.0)≤ 0.01
2≤ 400,000≤ 6,000≤ 100≤ -40 (-40.0)≤ 0.1
3undetermined≤ 90,000≤ 1,000≤ -20 (-4.0)≤ 1
4undeterminedundetermined≤ 10,000≤ +3 (+37.4)≤ 5
5undeterminedundetermined≤ 100,000≤ +7 (+45.6)> 5
6xxx≤ +10 (+50.0)x

Personal advice

Would you like to receive more information about products and applications?
Or do you need personal advice? We’re here to help!