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GREEN INSTRUMENTS G26 Instruction Manual

Ambient oil mist detector
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G26
Ambient Oil Mist Detector
Instruction Manual

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  • Page 1 Ambient Oil Mist Detector Instruction Manual...

  • Page 2: Table Of Contents

    Content Content NTRODUCTION BOUT THIS ANUAL NQUIRIES AND EEDBACK BOUT THE YSTEM 1.3.1 System components 1.3.2 Additional components – O HOOSING THE IGHT LARM EVELS PACITY OF PECIFICATIONS NSTALLATION ENERAL 3.1.1 Control at Delivery 3.1.2 Safety Aspects 3.1.3 Symbol identification TANDARD NSTALLATION 3.2.1...
  • Page 3 G26 Ambient Oil Mist Detector ETTING OF LARM EVELS ETTING OF IGNAL OUTPUTS AINTENANCE ROUBLESHOOTING PARE ARTS 10 M AINTENANCE INSTRUCTION ABLE OF IGURES 1-1: O IGURE PACITY VERSUS PATH LENGTH FOR DIFFERENT CONCENTRATION 3-1: I G26 A IGURE LLUSTRATION OF A...

  • Page 4: Introduction

    Green Instruments A/S reserves the copyright of the manual. Without prior written per- mission of Green Instruments A/S, the manual may not be copied and given to unauthor- ized people.

  • Page 5: Inquiries And Feedback

    The G26 Ambient Oil Mist Detector uses a green laser light beam based on the principle of light transmission. A light beam with specific spectral characteristics is projected across the space to be monitored for oil mist leakage.

  • Page 6: System Components

    1.4 Choosing the Right Alarm Levels – Opacity of Oil Mist The alarm levels of the G26 Ambient Oil Mist Detector can be adjusted to specific re- quirements. The variable output as well as the display of the monitoring unit states the level of opacity in percent, i.e.

  • Page 7: Figure 1-1: Opacity Versus Path Length For Different Concentration

    G26 Ambient Oil Mist Detector smaller droplets have a higher opacity effect and are thus easier to detect than larger droplets. In order to understand the relationship between opacity, oil mist concentration and the path length of the oil mist, two fictive examples are given in Figure 1-1. The figure illustrates different oil mist opacity levels corresponding with different oil concentrations and path lengths for a fictive oil type with oil droplets ranging from 10…20 µm.

  • Page 8: Specifications

    Specifications 2 Specifications Control and Monitoring Unit Option 1: 100–240 VAC – 50/60 Hz – 1.4 A Power supply Input Option 2: 20 - 30 VDC – 2 A Ambient temperature 0 °C–55 °C Analog output: 2 x 4…20 mA max. 500 Ω - (active & linearized) Communication options: (All included as standard) Digital output: 4 x Alarm Relays...
  • Page 9 G26 Ambient Oil Mist Detector Optional Equipment (refer to spare part section 9) Support and alignment Mild steel for welding. Used in case of mounting on structures brackets with thickness less than 6 mm Audit targets 100, 22 & 8 % Opacity (+/÷ 2% of full range)

  • Page 10: Installation

    & reflector. Attention Installation and operation of the G26 Ambient Oil Mist Detector and associated equipment must be carried out by skilled personnel. Green Instruments A/S does not take any responsibility of the operation of the system and associated equip- ment whatsoever.

  • Page 11: Control At Delivery

    3.1.1 Control at Delivery Upon receipt of the G26 Ambient Oil Mist Detector, please inspect and confirm that the received items are in accordance with the packing list and not damaged. Any discrepancy should be reported to the supplier immediately. If any of the received parts are damaged, the shipping company should be informed, and new parts made available before complet- ing the installation.

  • Page 12: Symbol Identification

    EU directives 3.2 Standard Installation A G26 Ambient Oil Mist Detecting System can consist of up to 2 sensors (i.e. transceiv- er/reflector units). Other systems configuration supporting up to 16 sensors available up- on request. The installation of each transceiver/reflector unit is similar to each other. Fig- ure 3-1 illustrates the installation of a system with a transceiver/reflector unit.

  • Page 13: Figure 3-1: Illustration Of A G26 Ambient Oil Mist Detector With Transceiver/Reflector Unit

    G26 Ambient Oil Mist Detector Figure 3-1: Illustration of a G26 Ambient Oil Mist Detector with transceiver/reflector unit Figure 3-2: Mounting position of the transceiver and the reflector Ver.2.0 – Revision March 2022...

  • Page 14: Transceiver And Reflector

    Installation 3.2.2 Transceiver and Reflector The transceiver and reflector are mounted into the alignment brackets as illustrated in Figure 3-3 and Figure 3-4. Special attention must be given to the alignment, ensuring the transceiver and reflector is mounted precisely centered and directly opposite each other. Figure 3-3: Installation of transceiver Figure 3-4: Installation of reflector...

  • Page 15: Junction Box

    G26 Ambient Oil Mist Detector 3.2.3 Junction box The junction box is an optional item used in cases where the cable between the Control and Monitor unit and the Transceiver exceeds 15 meters and/or in cases where multiple transceivers are daisy chained together. If the scope of supply includes a junction box, the junction box is pre-mounted with a connection cable for easy connection to the transceiv- The connection terminals are located in the junction box.

  • Page 16: Menu Structure & Configuration

    Menu structure & configuration 4 Menu structure & configuration 4.1 Transceiver 4.1.1 Transceiver button function Figure 4-1: Transceiver Interface The transceiver user interface consists of a green power LED, a yellow warning LED and a red alarm LED, a zero and a span button, and 5 signal strength LEDs. •...

  • Page 17: Figure 4-2: Illustration Of The Strongest Signal, No Obstructions To The Light Beam

    G26 Ambient Oil Mist Detector Figure 4-2: Illustration of the strongest signal, no obstructions to the light beam • When the illumination changes to one of the LEDs to the left, it indicates that the re- flecting beam becomes weaker, i.e., the beam is scattered or blocked, or the trans- ceiver lens and/or reflector become contaminated.

  • Page 18: Set Laser Aligning Function

    Menu structure & configuration 4.1.2 Set laser aligning function WARNING Once you start laser aligning function (section 4.1.2), you need to continue with setting unit address (section 4.1.3) until the new settings are saved (section 4.1.4). Visible laser radiation! When the transceiver operates in pulsed mode, the laser is classified as Class 1, which is safe under all conditions of normal use.

  • Page 19: Set Unit Address

    G26 Ambient Oil Mist Detector After the fine adjustment, the beam to the centre of the reflector, tighten all the bolts and screws on the alignment brackets. Remove the paper or the cardboard used. Go to the next step – set unit address.

  • Page 20: Save New Settings

    Menu structure & configuration Attention If 2 sensors have the same address, the system will go into alarm state and indicate 100% opacity as shown on Figure 4 7 & Figure 4 8. Figure 4-7: Symptom of address conflict Figure 4-8: Accident address change (2 sensors have the same address) Note Unit address will always appear shortly when the transceiver is connected to pow- er supply.

  • Page 21: Enabling Service Mode

    G26 Ambient Oil Mist Detector 4.1.5 Enabling Service Mode Note The laser can be turned off and transceiver alarms can be ignored by putting the transceiver into service mode. During service on, in and around the installation, the beam of light can accidentally be blocked causing false alarm.

  • Page 22: Figure 4-10: Service Mode (Flashing Warning Led)

    Menu structure & configuration Figure 4-10: Service Mode (flashing warning LED) Pressing SPAN will add 10 minutes to the default timer (see Figure 4-11). The service mode can last up to 60 minutes (10 mins. per. LED) (see Figure 4-12). Remaining time can be seen on signal Strength LEDs.
  • Page 23 G26 Ambient Oil Mist Detector Service mode can be canceled in the same way as it is entered i.e. by pressing and hold- ing ZERO until the 2 outer signal strength LEDs light up (see Figure 4-9), immediately releasing ZERO and pressing and holding ZERO again until 2 outer signal strength LEDs light up once more, then releasing once again.

  • Page 24: Control And Monitoring Unit

    Menu structure & configuration 4.2 Control and monitoring unit The control and monitoring unit uses HMI for the configuration, monitoring and visuali- zation. The description of the menu and system configuration can be found in this sec- tion. 4.2.1 Home menu Figure 4-13: Home menu with 1 configured sensor Home menu is the first screen when the system is turned on.

  • Page 25: Sensor Menu

    G26 Ambient Oil Mist Detector 4.2.2 Sensor menu If only one sensor is configured, the sensor menu will be the same as the home menu. If two sensors are configured, pressing the sensor name (e.g. S_1) will give access to the sensor menu of that sensor (Figure 4-13).

  • Page 26: Alarm List Menu

    Menu structure & configuration Figure 4-15: Sensor menu 4.2.3 Alarm list menu By pressing Alarm on the Sensor Menu of a specific sensor, the Alarm list menu shown on Figure 4-16 will appear. Figure 4-16: Alarm list menu The alarm list menu has 6 function buttons: •...

  • Page 27: Figure 4-17: Select An Alarm In The Alarm List Menu

    G26 Ambient Oil Mist Detector Figure 4-17 indicates the red alarms mean the alarms are currently active. The green alarm means the alarm is currently active and acknowledged. When an alarm is recov- ered, the recovered time will be indicated at the Recove column on the screen (as the yel- low alarm).
  • Page 28 Menu structure & configuration The full alarm list is as follow: Alarm Description Information Sens 1 Error Error at Sensor 1 General error on sensor. Check if a more specific error is present on the same sensor. If not replace the sensor. Sens 1 Warning Warning at Sensor 1 Opacity warning level threshold reached.
  • Page 29 G26 Ambient Oil Mist Detector Alarm Description Information crease reflector distance. Replace the sensor. Ref 1 H Warning Warning for Low Reference light high. Reference Light In- Run align function. tensity Ref 1 H Alarm Alarm for Low Refer- Reference light to high. Run align function to ad- ence Light Intensity just light intensity.

  • Page 30: Trend Menu

    Menu structure & configuration 4.2.4 Trend menu Press Trend on the Sensor Menu, the opacity trends of all sensors will be displayed Fig- ure 4-19. Figure 4-19: Trend menu The opacity values (vertical axis) are shown on a time scale (horizontal axis). The scale of vertical axis is -10% - 100% opacity.

  • Page 31: Figure 4-21: Sensor Setup

    G26 Ambient Oil Mist Detector The Sensor Setup Menu has two function buttons: • System Setup: to access to the general System Setup menu • Home: to go back to the home menu Figure 4-21: Sensor Setup The light on top of the screen shows the alarm condition. Green/Yellow/Red light means no alarm and/or warning/active warning/active alarm.

  • Page 32: System Setup

    Menu structure & configuration Note that the monitor and control unit will always provide a warning alarm which is 50% of the Alarm level. During a normal operation, this warning can be interpreted as a lens cleaning warning. Alarm Delay Alarm delay is the delay time in second for the alarm to be activated.
  • Page 33 G26 Ambient Oil Mist Detector The menu displays the software version of the control and monitoring unit. It has a function button: • Home: to go back to the home menu The following parameters of the system can be configured in this menu: Sensor count The sensor count is the total number of the monitoring points, i.e.

  • Page 34: Calibration

    Calibration 5 Calibration Note ZERO and SPAN are adjusted to produce the desired output range covering the lightest and darkest sensing conditions. ZERO: 0% Opacity = 100% Transmission = All light Transmitted (Clear) SPAN: 100% Opacity = 0% Transmission = No light Transmitted (Dark) During ZERO calibration, all possible obstructions to the light beam (such as oil mist, smoke or dust) must be absent in the atmosphere between the transceiver and the reflector.

  • Page 35: Manual Span Calibration

    G26 Ambient Oil Mist Detector The transceiver interface will appear as shown in Figure 5-2 , after a valid Span calibra- tion meaning the Auto Span Calibration is registered. The interface will continue to show this until timeout of the Auto span.

  • Page 36: Figure 5-4: The Transceiver In Normal Operation Mode

    Calibration First, block the light beam (e.g. by mounting the AUDIT Target - 100% Opacity (part no. 02947) right after the transceiver. The alarm and warning LEDs turn ON, when the beam is blocked. Alternatively use a hand to block the beam. Then press and hold SPAN until all blue signal LEDs illuminate.

  • Page 37: Commissioning

    G26 Ambient Oil Mist Detector 6 Commissioning Before starting the system for the first time after completing the installation, please check and confirm that all parts are installed correctly and according to the instructions, and that all the connections are secured. Check and confirm all the electrical connections are correct according to the instructions.

  • Page 38: Maintenance

    Maintenance 7 Maintenance Besides normal cleaning of the lenses, the system does not require any maintenance. The lenses must be carefully cleaned with a cleaning pad (part no. 02398). It is strongly recommended to calibrate the system after cleaning the transceiver lens and the reflector (see chapter 5).

  • Page 39: Troubleshooting

    G26 Ambient Oil Mist Detector 8 Troubleshooting Trouble shooting should always be carried out by trained and certified personnel. The G26 Ambient Oil Mist Detector is connected to hazardous electric voltages, which can cause personal injury if not handled correctly. Possible Cause →Action Trouble Incorrect power supply →...

  • Page 40: Spare Parts

    The specific appearance of the parts list is sub- Part Part Description ject change without notice; the function however will not change 02915 G26 Transceiver module assembly 02870 G26 Reflector module assembly G26 Control & Monitoring Unit 02974 110-240 VAC G26 Control &...
  • Page 41 G26 Ambient Oil Mist Detector The specific appearance of the parts list is sub- Part Part Description ject change without notice; the function however will not change G26 Ambient Oil Mist Detector 02892 Instruction Manual Optional 01057 Alarm annunciator for panel mounting 02398 Cleaning pads Audit Target 100% Opacity (+/÷...

  • Page 42: Maintenance Instruction

    Maintenance instruction 10 Maintenance instruction System Type G26 Ambient Oil Mist Detection System MI26-0001 Task: Cleaning of Optical Lenses Task This instruction identifies cleaning optical lenses. description: Cleaning of optical lenses must be carried out by a skilled technician. Difficulty 1-5...
  • Page 44 EUROPE Green Instruments A/S Erhvervsparken 29 9700 Brønderslev, Denmark Tel: +45 96 45 45 00 sales@greeninstruments.com AMERICA Green Instruments USA, Inc. 6750 N. Andrews Avenue Suit 200 Fort Lauderdale, FL-33309, USA Tel: +1 954 613 0400 usa@greeninstruments.com ASIA Green Instruments (S) Pte. Ltd. 4008 Ang Mo Kio Avenue 10 #01-09/10 Techplace I, Singapore 569625 Tel: +65 3100 0577 sales.sg@greeninstruments.com...

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