Related Manuals for METROTEC U15 Series
Summary of Contents for METROTEC U15 Series
- Page 1 METROTEC S yste me zu r Mess u n g u nd Regel u n g von S a u ers toff U15-DIGITAL Oxygen Measuring and Control Device U15 Series Measuring module *** Version 1.6 ***...
- Page 2 Quality management system DIN EN ISO 9001:2015, No. 12 100 27736 TMS This declaration becomes invalid if changes are made without our consent. Kirchheim/Teck, 27/11/2019 Place, Date Signature © 2019 METROTEC GmbH Heinkelstraße 12 • D-73230 Kirchheim Telefon 07021/95336-0 • Fax 07021/95336-13 www.metrotec.eu • info@metrotec.de...
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Page 3: Table Of Contents
METROTEC Table of Contents Safety Instructions ....... 4 Preface .......... 5 Introduction ......... 7 Measuring Principle ......................... 7 Measuring Module ........................8 Sensor ............................8 General Layout ......8 Description of the Measuring Electronics ................8 Device Start-up ......9 Switching the Measuring Module on .................. -
Page 4: Safety Instructions
METROTEC Safety Instructions Please read through this operating manual very carefully before installing and commissioning the unit. Incorrect utilisation will invalidate the guarantee! Correct functioning and the operating safety of the unit can only be guaranteed if the ambient conditions specified in the Specifications chapter are maintained. -
Page 5: Preface
METROTEC Preface With the aid of an oxygen sensor , the measurement unit serves to measure the oxygen partial pressure in gaseous atmospheres. Such sensors work at high temperatures and so it is necessary for measures to be taken to ensure that no flammable gas mixtures contact the sensor or the unit. - Page 6 METROTEC Figure: Oxygen Measuring Module Type U15-Digital This description is valid for the versions listed here Versions of u15-Digital Designation Sensor Output Alarm Supply U15-Digital Extractive 230VAC U15-Digital-2 Extractive 230VAC U15-Digital-24 Extractive 24VDC U15-Digital-224 Extractive 24VDC U15-Digital-C Inline 230VAC U15-Digital-2C...
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Page 7: Introduction
METROTEC Introduction Measuring Principle Oxygen measurement units are designed to process signals transmitted from an oxygen sensor constructed of stabilized zirconium oxide. Zirconium oxide, a ceramic material that is also spoken of as a solid-state electrolyte, acts as an excellent oxygen-ion conductor when at a high temperature. -
Page 8: Measuring Module
The module is parameterized after the installation, if necessary, and will operate permanently with these settings. Note: In order to implement extensive changes and to display measured values, the "METROTEC U15 App" for Android Smartphones is required. Sensor Depending on the version, the measuring module requires a separate extractive oxygen sensor or an inline sensor to carry out its functions. -
Page 9: Device Start-Up
METROTEC Device Start-up Switching the Measuring Module on The measuring module is wired up in accordance with the wiring diagram. The module is ready to start when the supply voltage is applied. The right LED strip lights up. See Table 1, Figure 1. -
Page 10: Measured Value Output
The linear output of measured values implicates the assignment of the measured values to either the 0 to 20 mA or the 4 to 20 mA output in linear mode. This assignment is permanent and can only be changed on location by means of the "METROTEC U15 App" for Android Smartphone . -
Page 11: Configuration
METROTEC U15 App for Android Smartphone Note: In order to implement extensive changes and to display measured values, the "METROTEC U15 App" for Android Smartphones is required. Enabling Configuration The configuration will be enabled by pressing "T1" until the bottom LED of the left LED array lights up. -
Page 12: Adjusting The Limit Value
METROTEC In the 0 to 20 mA configuration this is at 10 mA, in the 4 to 20 mA configuration this is at 12 An adjustment should be made only, if the following conditions are met: 1. The sensor must have reached operating temperature 2. -
Page 13: Practical Approach
METROTEC Practical approach In many cases the visual display of the mA signal is not within sight distance of the measuring module. Thus our recommendation is to disconnect the mA connection from terminals 4 and 5 and replace it by a commercially available portable mA measuring device. - Page 14 METROTEC Example for 0 to 20 mA and for 4 –20 mA at 0-20% oxygen. 12 16 20 Switching the analog output to linear / logarithmic occurs by means of a jumper between the terminals 16 and 17. Should there be a 2nd analog output, it will also be switched over in the process.
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Page 15: Analog Interfaces
Semiconductor relay for readiness App for Android Smartphone The "METROTEC U15 App" for Android Smartphone enables you to look at measuring values and change configuration settings. First the measuring module must be activated. This is done by pressing "T2". The top green LED in the right LED array starts to flash. This signals readiness for establishing a Bluetooth connection. -
Page 16: Connection Diagrams
METROTEC Connection Diagrams Note: Digital outputs are floating semiconductor contacts (1A, 24V) mA Output 1 and 2 are electrically isolated from one another. Connecting sensors Note: Please refer to the operating instructions of the respective sensor. Extraktive Sensoren Inline-Sensoren Function... - Page 17 METROTEC U15-Digital Terminal Function Definition 230 VAC Supply 230 VAC Supply PE (Protective Earth) Protective Earth Measured value output 1 + Measured value output 1 - ---- ---- ---- ---- Semiconductor relay Readiness 24 VDC, 1 A Semiconductor relay Readiness 24 VDC, 1 A...
- Page 18 METROTEC U15-Digital-C Terminal Function Definition 230 VAC Supply 230 VAC Supply PE (Protective Earth) Protective Earth Measured value output 1 + Measured value output 1 - ---- ---- ---- ---- Semiconductor relay Readiness 24 VDC, 1 A Semiconductor relay Readiness 24 VDC, 1 A...
- Page 19 METROTEC U15-Digital-24 Terminal Function Definition 24 VDC + Supply 24 VDC - Supply PE (Protective Earth) Protective Earth Measured value output 1 + Measured value output 1 - ---- ---- ---- ---- Semiconductor relay Readiness 24 VDC, 1 A Semiconductor relay Readiness 24 VDC, 1 A...
- Page 20 METROTEC U15-Digital-C24 Terminal Function Definition 24 VDC + Supply 24 VDC - Supply PE (Protective Earth) Protective Earth Measured value output 1 + Measured value output 1 - ---- ---- ---- ---- Semiconductor relay Readiness 24 VDC, 1 A Semiconductor relay Readiness 24 VDC, 1 A...
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