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Installation and operating
Compact Thermal Mass Flow Meter
Please read the following instructions carefully before installing the product. Trouble free and
safe operating of the product can only be guaranteed if recommendations and conditions stated
in this manual are respected.
manual
OS418
(Pro-Inline)
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Table of Contents
Related Manuals for OMEGA AIR OS418
Summary of Contents for OMEGA AIR OS418
- Page 1 Installation and operating manual OS418 Compact Thermal Mass Flow Meter (Pro-Inline) Please read the following instructions carefully before installing the product. Trouble free and safe operating of the product can only be guaranteed if recommendations and conditions stated in this manual are respected.
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Page 2: Table Of Contents
9.3.2 Connect Several OS418 to Modbus Master ......... 17 13.1 M-Bus Outptut ................20 13.2 Connection between OS418 Outputs and Customer Equipment ... 20 14 Configuration ................... 22 15 Read and Analysis of Measurement Data ..........22 15.1 Data Logger ................22 15.2 Operations ................. -
Page 3: Safety Instructions
1 Safety Instructions Please check if this instruction manual matches the product type. Please observe all notes and instructions indicated in this manual. It contains essential information which must be observed before and during installation, operation and maintenance. Therefore, this instruction manual must be read carefully by the technician as well as by the responsible user/qualified personnel. -
Page 4: Registered Trademarks
• The product should be maintained and calibrated frequently, at least annually. General safety instructions It is not allowed to use the product in explosive areas. • Please observe the national regulations before/during installation and • operation. Remarks • It is not allowed to disassemble the product. ATTENTION! Measurement values can be affected by malfunction! The product must be installed properly and frequently... -
Page 5: Application
4 Application The OS418 is a Compact Thermal Mass Flow Meterthe designed to measure the consumption of compressed air and other gases within the permissible operating parameters. These parameters are stated in chapter 6 Technical Data. -
Page 6: Technical Data
• Options for output signals: ◦ Analogue 4 … 20 mA and pulse output ◦ Modbus interface ◦ M-Bus interface Wireless interface for remote sensor settings • Configurable through Android or iOS devices • Embedded Data logger capable of recording 5-million measurement •... -
Page 7: Electrical Data
6.2 Electrical Data Power supply 15 ... 30 VDC, 120 mA @ 24 VDC 6.3 Data Logger Memory size Up to 8,000,000 samples. Recording channels Up to 3: flow, consumption, and pressure. Logger programming Use the mobileApp S4C-FS (Free for download on Google Play Store) Logger readout Use Windows-based software - S4A via USB (Free for download on the company website) -
Page 8: Flow Ranges
6.6 Flow Ranges Unit: l/min; Media: Standard flow in air; Reference pressure: 1000 hPa; Reference Temperature: +20°C DN15 DN20 DN25 DN32 Standard 1000 2000 3500 6000 range (S) Low range 1200 Unit: l/min; Condition: N at 0°C and 1013.25 hPa DN15 DN20 DN25... -
Page 9: Additional Data For Models With Pressure Sensor
6.7 Additional Data for Models with Pressure Sensor Accuracy ±0.5% FS Parameters Pressure: bar (default) or psi Sensor Piezzo-resistive sensor Measuring range 0 … 1.0 MPa... -
Page 10: Dimensional Drawing
7 Dimensional Drawing Unit: mm 7.1 OS418 Dimension DN8/DN15 DN20/DN25... -
Page 11: Thread Adapter Dimension
DN32 7.2 Thread Adapter Dimension... -
Page 12: Installation
34.0 G1” NPT1” 40.0 G1-1/4” NPT1-1/4” 52.0 8 Installation OS418 is delivered with following components: Qty. Description Order no. OS418 Compact Thermal Mass Flow Meter 5 m cable with M8 connector and open ends USB cable Instruction and operation manual Calibration certificate 8.1 Installation Considerations... -
Page 13: Led Indicators
It is strongly recommended not to install OS418 permanently in wet air/gas conditions, which exists usually right after a compressor outlet. 8.2 LED Indicators The OS418 provides four LED indicators on the display panel, which indicate the status of the data logger, display, and wireless connection separately. Function... -
Page 14: Electrical Connection
5 m cable with a M8 connector on one side and open wires on the other side. To operate the OS418, one cable connection is sufficient. However, if the pulse output is to be used or the supply and signal should be on separate cables, a second connection cable must be ordered. -
Page 15: Signal Outputs
Pin assignment connector plug M8 Output Connector Pin 1 Pin 2 Pin 3 Pin 4 Modbus Pulse and analog M-Bus M-Bus M-Bus M-Bus M-Bus Wire color Brown White Blue Black ATTENTION! Do not screw the M8 plug forcibly. Otherwise, it may damage the connecting pins. -
Page 16: Modbus Interface
Volumetric flow Volumetric flow Pulse length Max. pulse output ≦ 3 ≦ 10800 [ms] per hour 1080 > 3 > 10800 2880 > 6 > 21600 3960 9.3 Modbus Interface 9.3.1 Modbus Information The default settings of the Modbus interface are as follows: Mode Baud rate 19200... -
Page 17: Connect Several Os418 To Modbus Master
4-byte 9.3.2 Connect Several OS418 to Modbus Master The OS418 with Modbus/RTU interface can be easily daisy-chained to a Modbus Master device. This master can be either the company's displays and gateways or any third-party Modbus/RTU master. Through this method you can add up to 16 flow meters to the master device. - Page 18 At the end of the bus, a 120 Ohm resistor should be placed a termination resistor. See the below picture for details. Create Daisy-Chain using RS-485 Splitter To connect the OS418 to the daisy-chain, the RS-485 splitter and the M8 to M12 converter cable are needed.
- Page 19 Furthermore, place a M12 termination resistor at the last splitter in the daisy- chain, as show in the figure below. Remark: The OS331 can maximum provide 10 W power to the connected devices. If more power is required a separate power supply is needed. Topology of Modbus/RTU Daisy-Chain The recommended bus topology is to connect devices as a daisy-chain, as shown in the figure in section 9.3.2.1 Modbus/RTU Cable Length.
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Page 20: M-Bus Outptut
4-byte Flow 4-byte M-Bus status 4-byte 13.2 Connection between OS418 Outputs and Customer Equipment This section provides figures to show how outputs supported by the OS418 connect with the customer equipment. In the following figures, the Instrument indicates the OS418. - Page 21 Analog output (Isolated) Pulse output (passive) Modbus/RTU output M-Bus output...
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Page 22: Configuration
Contact manufacturer in case you are not familiar with the settings. Read and Analysis of Measurement Data The OS418 embeds the data logger to record the measured data. You can use the S4A, the free data analysis software to read and analyze the data. 15.1 Data Logger Before you use the data logger, learn about how it works: •... -
Page 23: Operations
• The OS418 log file supports up to 5.6 million records due to its memory size, which is equivalent to 64-day data at the one-second sampling rate. When the OS418 runs out of memory, the new record will replace the •... -
Page 24: Calibration
5. Click Read, read out data records logged during a time period that you specify. Click the File menu to have graphic views on measurement data in a log file; and if needed, to export this log file to the Excel or CSV format. For more information about operations on OS4A, click the Help button on the top right corner. -
Page 25: Appendix - Specifications
Appendix - Specifications 19.1 Error Codes When an error code shows on the LED display, use the following table to identify the error cause. Code Description Code Description Er. 01 Real time clock failure Er. 20 Flow sensor failure Er. 02 ADC failure Er. - Page 26 OMEGA AIR d.o.o. Ljubljana Cesta Dolomitskega odreda 10, 1000 Ljubljana, Slovenia T: +386 1 200 68 00 | info@omega-air.si | www.omega-air.si...
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