SUTO S120-AMBIENT (01) PDF Document

Before operating the SUTO S120-AMBIENT, please observe all notes and instructions indicated in the manual. This manual must be available at the operation site at all time. Should the device be tampered with in any manner other than a procedure described and specified in the manual, the warranty is void.

WARNING! Compressed air!

Any contact with quickly escaping air or bursting parts of the compressed air system can lead to serious injuries or even death!

• Do not exceed the maximum permitted pressure range (see sensors label).

• Only use pressure tight installation material.

• Avoid that persons get hit by escaping air or bursting parts of the instrument.

• The system must be pressure-less during maintenance work.

WARNING! Voltage used for supply!

Any contact with energized parts of the product, may lead to an electrical shock which can lead to serious injuries or even death!

• Consider all regulations for electrical installations.

• The system must be disconnected from any power supply during maintenance work.

• Any electrical work on the system is only allowed by authorized qualified personnel.

General Safety Instructions:

• It is not allowed to use the product in explosive areas.

• Please observe the national regulations before/during installation and operation.

• It is not allowed to disassemble the product.

Observe the permitted operating parameters for the SUTO S120-AMBIENT. Any operation exceeding these parameters can lead to malfunctions and may lead to damage on the instrument or the system. Measurement values can be affected by malfunction if the product is not installed properly and frequently maintained.

• The instrument must be operated within or better than compressed air quality Class 4.5.4 according to the ISO8573-1. If the air quality cannot reach the specified Class, the device may show wrong measurement values or even may get damaged.

• Do not exceed the permitted operating parameters.

• Make sure the product is operated in its permitted limitations.

• Do not exceed or undercut the permitted storage and operation temperature and pressure.

• The product should be maintained and calibrated frequently, at least annually.

• Make sure that the transportation temperature of the device is between -10 … +50°C.

• For transportation it is recommended to use the packaging which comes with the device.

• Please make sure that the storage temperature of the device is between -10 … +50°C.

• Avoid direct UV and solar radiation during storage.

• For the storage the humidity must be <90%, no condensation.

• Measures oil vapor contents in ambient air.

• Easy setup with supplied funnel.

• Applicable in the permanent or portable applications.

• Measures down to 0.001 mg/m³.

• PID sensor for the highest accuracy.

• Service and alarm indication through LEDs.

• Connectable to display and data logger of SUTO iTEC as well as third-party display and control units.

• IP65 casing provides robust protection in rough industrial environment.

• Local display for showing actual readings and integrated data logger.

Measuring Parameter

* Based on 1000 hPa(a), 20°C, 0% relative humidity

General Data

Electrical Data

Output Signals

Accuracy

Upon powering up the S120-Ambient, a period of stabilization is required to achieve a sufficiently accurate reading. The duration of this stabilization period is influenced by factors such as the input pressure and the concentration level of oil vapor. The table below shows the minimum time from powering up to obtaining accurate results.

Please make sure that all components listed below are included in your package.

The S120-Ambient can be used as a portable device or fixedly installed. The device is not suitable for permanent outside installations.

Use always the supplied stand to place the funnel in the ambient and make sure the area in front of the funnel is free of any obstacles which could lead to wrong measurements.

For wall mounting, the device can be mounted on the wall using the supplied brackets.

The air inlet and outlet are located at the bottom of the S120-Ambient. Follow these steps to connect the S120-Ambient with the funnel for air collection:

1. Connect the hose to the inlet of the S120-Ambient.

2. Connect the other end of the hose to the funnel and place the funnel in the room.

Please consider the following recommendations for a successful measurement result:

• All components from the sampling point to the S120-Ambient must be oil- and grease-free.

• Ambient and gas temperature must be within the specified ranges.

• The sampling air must be dry (<= 60% rH) and clean.

ATTENTION! Avoid contamination with oil or grease! It will lead to very slow measurement or impossible measurement results!

The S120-Ambient provides five electrical connectors:

Pin assignment of M12 connectors:

Legend to pin assignment:

Connection to the power supply:

Connect the M12-A or M12-B connector to the power supply provided in the package.

RS-485 networking (Modbus/RTU):

When output signal is carried over the Modbus/RTU protocol, connect the S120-Ambient to the RS-485 network through the M12-A or M12-C connector.

TCP/IP networking (Modbus/TCP):

When the Modbus/TCP protocol is applied, connect the S120-Ambient to the TCP/IP network through the RJ-45 connector. Remove the protection cap and plug in the network cable (RJ-45).

The S120-Ambient is delivered with standard ex-work configuration or with specific customer settings according to the order.

You can use the local display or an optional Service Kit to configure the S120-Ambient.

Main Screen

On the left side of the main screen, the online measuring values are shown:

• Oil vapor: Oil vapor content per cubic meter at reference condition

• Temperature: Sensor casing temperature

• Pressure: Pressure at the sensor

• Status: Sensor status (for service)

On the right side, the online graphic view is shown. Note: An oil vapor reading of 0.555 indicates a fault.

Quick Buttons

The quick buttons and their functions are described below:

Status Bar Icons

Description of icons displayed in the status bar:

After you click the Menu button, the following menus are available:

To configure sensor settings, navigate to Menu > Sensor settings. After you change settings, click “Save”.

Basic Setting

Analog Output

To configure the scaling of the analog output. Whenever the output unit is changed, it is recommended to adjust the scaling of the analog output.

Alarm Settings

To configure the threshold of oil vapor that triggers the alarm. You can enable the alarm, set the threshold, delay, and hysteresis.

Status

To check the device status in case of a service issue. It shows remaining life time, calibration requirement, filter capacity, pressure, temperature, and status code.

To view and change system-level settings, navigate to Menu > System settings.

The S120-Ambient provides a software-based guided measurement which simplifies the process and prevents wrong measurements. A PDF report can be created from the measurement series.

To start a guided measurement:

1. Click Menu > Guided measurement.

2. Select the type of measurement you want to perform:

• Monitoring with programmed time out: Starts a measurement with a user-programmed duration. The system will stop automatically and save the data. This mode is ideal for audits where you must measure at several points.

• Monitoring with manual stop: Starts the measurement without a programmed stop time. You can start and stop it whenever you want, then decide to save or delete the data. This is used to monitor changes in values.

Steps for guided measurement:

1. After selecting the measurement type, an overview screen appears. Click Yes to start.

2. Input the customer and tester details for the report (Customer, Tester, Location, Measuring point, File Name).

3. Input the altitude where the device is placed. Altitude is needed for an accurate oil vapor measurement. Only positive values are valid. If the altitude is negative, enter 0.

4. Select the target compressed air class as needed (e.g., ISO 8573-1). CLASS 0 allows you to customize the alarm limit values.

5. If you selected CLASS 0, enter a limit value for the measurement channel.

6. Enter the measurement duration. It takes time to obtain stable data after power-on. Set a proper measurement time based on the actual situation.

7. The system checks if the compressed air is connected and within the valid pressure range. Click Start to begin the measurement.

During the measurement, the Data logger icon switches from STOP to LOG. The remaining time is displayed. When the measurement is completed, choose to Discard data or Save data.

After performing guided measurements, you can view and manage measurement files through Guided Measurement > Report Manager.

• To view measurement results: Click on the file entry (not the check box). A window appears showing a PDF preview.

• To copy, export, or delete files: Select the file check boxes, and then click the corresponding button at the bottom.

This section describes how to troubleshoot the SUTO S120-Ambient based on LED indicators, relay status, current output, and display readings.

LED Indicators

Errors and Actions Table

Relay / Current Output Troubleshooting

Display / Modbus Readings Troubleshooting

Analog Output

The S120-Ambient has an analog output range of 4 … 20 mA. This output is scaled to:

• 4 mA = 0.000 mg/m³

• 20 mA = 5.000 mg/m³

Modbus Interface Default Settings

Communication parameters (Modbus/RTU)

Communication parameters (Modbus/TCP)

The device returns a response message to the master with Function code: 03.

Byte Order Sequence

*S: Sign, E: Exponent, M: Mantissa, XXX: no value

Modbus holding registers (read-only)

Interpretation of system status (32-bit data read as single bits)

Modbus/TCP output channels

The S120-Ambient provides a relay alarm output to monitor oil vapor content and give an alarm at a particular threshold value.

Alarm relay specifications:

• Rating: 40 VDC / 0.2 A

• Power-off state: NO (normally open)

• Default threshold value: 1.0 mg/m³

The different states are in the table below:

The advantage of the normally open relay is that both critical situations can be detected: when the alarm value is reached, and when the device has a power outage. To power an external buzzer or alarm light, you need to invert the signal with an external alarm circuit.

Calibration

The instrument is calibrated before delivery. On-site conditions such as oil, high humidity, or other impurities can affect the accuracy. We recommend calibrating the instrument at least once per year. To request calibration service, please contact the manufacturer.

ATTENTION! Please save all your measurement data on an external device before returning the instrument to calibration and service. It might be necessary to reset the display’s storage during calibration and service.

Maintenance

To clean the instrument and its accessories, you are recommended to use a moist cloth only.

ATTENTION! Do not use isopropyl alcohol to clean the display!

Disposal of waste

Electronic devices are recyclable material and do not belong in the household waste. The instrument, accessories, and packings must be disposed of according to your local statutory requirements. The disposal can also be carried by the manufacturer of the product; for this, please contact the manufacturer.