Prosense SOMA Series Installation And User Manual

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PROSENSE SOMA Series Gas Detectors

Installation and User Manual

Prosense Teknoloji San. Ltd. Şti.

Cumhuriyet Mah. Mermer sok. No:16 Kartal İstanbul

Tel: (90) 216 306 77 88 Faks: (90)216 473 81 29

www.prosense.com.tr

PRS-UM-SOMA-EN-Rev.1.1-14.01.2023

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Summary of Contents for Prosense SOMA Series

Page 1 PROSENSE SOMA Series Gas Detectors Installation and User Manual Prosense Teknoloji San. Ltd. Şti. Cumhuriyet Mah. Mermer sok. No:16 Kartal İstanbul Tel: (90) 216 306 77 88 Faks: (90)216 473 81 29 www.prosense.com.tr PRS-UM-SOMA-EN-Rev.1.1-14.01.2023...
Page 2 Otherwise, it could fail to perform as designed and persons who rely on this product for their safety could suffer severe personal injury or death. The warranties made by Prosense with respect to this product are voided if the product is not installed, used and serviced in accordance with the instructions in this user guide.
Page 3 Contents Safety Information............................5 Strictly follow the Instructions for Use ....................5 Maintenance ............................5 Use in areas subject to explosion hazards ..................5 Liability for proper function or damage ..................... 5 Special Conditions for Safe Use; ......................... 6 Introduction ..............................7 Detector body .............................
Page 4 Change password ..........................26 Change Display Backlight ........................26 Information Menu options ........................27 Display Measurements ........................27 Display Transmitter information ...................... 27 Display Sensor information ......................28 Test Menu Options ..........................28 Run Display test ..........................28 Run Analogue Output test ........................ 28 Run Bump Test ..........................
Page 5 Prosense or if the sensing head is used in a manner not conforming to its intended use. Prosense cannot be held responsible for damage caused by non-compliance with the recommendations given above.
Page 6 Special Conditions for Safe Use; • The equipment must be installed so, that during intended use, including maintenance and cleaning, or during malfunctions that can normally be expected, an ignition source due to electrostatic charging of the enclosure is excluded. •...
Page 7 RS485 serial communication with integrated onboard devices. Diagram-1: SOMA Detector SOMA Series gas detectors for monitoring a very wide range of toxic and flammable gases and oxygen. SOMA series are available as intrinsically safe (Ex ia) detectors suitable for use in Zone 1 or 2 hazardous areas.
Page 8 (Tamb = -20 °C ÷+60 °C) Ambient temperature range IP 65 => Mechanical protection degree against solid, dust and liquid. SOMA Series detectors has below features: • Fixed sensor for detection of Toxic, Flammable Gases and Oxygen • Pre-calibrated plug-in Pro-Cell sensor modules for many types of gas •...
Page 9 Prosense SOMA detectors comprises of the main parts as shown below: Diagram-2: Exploded view of SOMA detector Detector body The detector enclosure has two threaded entries. The two M20 cable entries are located at the bottom of the enclosure for connecting the power source and signal output to bottom entry allows direct connection of the sensor socket.
Page 10 Sensor Module Diagram-3: Detector body The Prosense sensor module designed to detect flammable, toxic and oxygen gases. Sensor head may include Infrared and a wide range of toxic gas sensors based on electrochemical cell (ECC) technology. Sensor module includes sensor itself, sensor electronics that keeps sensor calibration data and special connectors to mount detector main board.
Page 11 Dimensions The detector dimensions are given in below diagram. The measurement unit is millimetre. Detector side view Detector front view Detector top view Detector bottom view Diagram-5: Detector view and dimensions in mm PRS-UM-SOMA-EN-Rev.1.1-14.01.2023...
Page 12 • in places where temperature is outside the admissible operating range, • corrosive environments, • inside air vents. • environments where silicon can be found. Prosense SOMA series detector has two mounting holes on detector body to fix detector directly to a surface as shown in diagram-3. PRS-UM-SOMA-EN-Rev.1.1-14.01.2023...
Page 13 Caution: All electrical connections should be made in accordance with any relevant local or national legislation, standards or codes of practice. Prosense SOMA detectors operate with 12 VDC. The connection socket located on main board as given in Diagram-8 and details given in below table 1:...
Page 14 same principles apply to conduit installations. These bonding techniques provide good RFI/EMC performance. Earth/ground loops must be avoided to prevent the risk of false signal variation. The Earth Screen of the field cable should be “tied to Earth” or connected to Ground at one point only.
Page 15 Copies of certiﬁcates are given in the end of this manual. The following safety parameters are applicable to the Prosense SOMA detectors. Device Parameters Value...
Page 16 Detector configuration Prosense SOMA detector can provide 4-20 mA, 5-15Hz and RS485 MODBUS serial outputs. Detector can provide two output options at same time: • 4-20mA analogue signal output and RS485 MODBUS serial output • 5-15Hz signal output and RS485 MODBUS serial output 4-20 mA signal output and 5-15Hz signal output uses same connection ports.
Page 17 RS485 serial communication output: provide detector power and 5-15HZ (3) and V- (4) to read output signal. Prosense SOMA series detector has RS485 serial communication output on main board. Connection ports are located on a different socket nearby analogue output and power input ports.
Page 18 System Status by detectors. The Prosense SOMA detector has a screen to show status messages and measurement levels online. Also it has five LEDs to show power, fault, alarm1, alarm2 and alarm3 status. If all is fine the green power LED will lit and screen will show the gas that detector measuring, current level of gas detector reading, data and time information, ambient temperature and a bar to show level of current gas measurement.
Page 19 ALARM %LEL METHANE Measurement Range Auto-adjustment Function SOMA series detectors designed to measure 0-100%LEL and 0-100%vol flammable gas at same time. The detector has auto-range feature and measurement range works as follows: Starts measuring gas concentration in 0-100%LEL level: %LEL...
Page 20 Fault LED will be lit applying power and blink once in a second 7. Check the screen. It will display “Prosense” logo while running self check and return to main screen with a “WARM-UP”mark at upper right edge of display.
Page 21 Detector Settings Prosense SOMA detector prepared at factory to work as standalone detector. User may want to change settings and alarm levels depending of the usage. SOMA detector screen can be used to change the detector settings. The 3 keys on display will be used to perform any operation which are Enter, up (Increase) and down (decrease).
Page 22 Menu structure Detector menu includes all necessary steps to setup detector and display information SOMA Series Gas 1. Calibrate 2. Alarm Settings Diagram 13: Main menu structure 3. Configure 4. Information Diagram 13: Main menu structure 5. Test 6. Exit...
Page 23 Alarm Settings Alarm levels can be adjusted via using alarm menu steps. Once you reach the main menu the first option is alarm settings. Press Enter to move the alarm settings menu. A new menu listing alarm parameters will be shown: Alarm Level: 1 Set Point: 10% Auto-reset: YES...
Page 24 SOMA detector may include relays depending of the model type. Relay settings can be used if the detector has relay options. Off Delay: To define the delay while alarms and relays performing activation or deactivation functions. This function must be adjusted according to operating conditions and safety rules. For example, in some plants ventilation fans kept activated after the measurement level falls below the alarm level.
Page 25 4-20mA Output Fault : 2.0 mA Warm Up : 3.0 mA Calibration : 3.0 mA Inhibit : 3.0 mA Over Range : 22.0 mA Display Parameters User can adjust these values to desired values depending of the application requirements. Detector display can be adjusted as per requirements. The display options are given in Display menu item: 1.
Page 26 Enter key long enough to confirm. The display will show “Successful” message and return back to higher level menu. User should remember the password to perform changes later on. If user forgets the password, detector should be returned back to Prosense to reset Change Display Backlight password.
Page 27 : 128 Ohm Temperature :24C Display Transmitter information To get details about transmitter and firmware level use transmitter information step in Information menu. A screen will display details. Prosense SOMA 3133 XMTR SN : TST-PS01 XMTR FW : 1.1.0 Modbus Adr. :01...
Page 28 Display Sensor information To return back to previous menu please press Enter key till the screen changes. To get details about transmitter and firmware level use transmitter information step in Information menu. A screen will display details. 100 %LEL METHANE : XXXXX Alarm 1: 10 %LEL Alarm 2: 20 %LEL...
Page 29 To return back from Analogue Output test please press Enter key till the screen updated with Run Bump Test previous menu items. Bump test can be run at any time when needed. The Bump test runs depending of the parameters defined for bump test in configuration details. To initiate bump test please select Bump test menu item in Test menu and press Enter key.
Page 30 Detector will return to measurement screen for another 30 seconds with same message. Once the time counted down to zero the screen will display test results: Start Concentration 0%LEL Peak Concentration 24%LEL End Concentration 0%LEL Test Result OK! If test fails the screen will indicate the result: Start Concentration 0%LEL Peak Concentration...
Page 31 Calibration It is recommended to periodically carry out calibration to ensure correct operation. Prosense SOMA series detector calibration includes two steps as zero and span calibration. It is possible to perform each step independently. Prosense recommends performing both calibration steps to have correct calibration.
Page 32 1. Calibrate 2. Alarm Settings 3. Configure 4. Information 5. Test 6. Exit Select Calibration. Screen will show calibration options: 1. Set Zero 2. Set Span 3. Cancel Cal 4. Reference Gas 5. Previous Menu It would be better to first set reference gas details and calibration cycle period as these values cannot be altered once calibration started for zero or span.
Page 33 During this time you should apply necessary gas for zero level. For catalytic, pellistor and electrochemical sensors use clean air gas, for infrared sensors use N2 gas. For more details contact Prosense. Detector will automatically perform zero calibration while gas applied to Span Calibration sensor during this period.
Page 34 During this period gas should be applied to sensor. Detector will automatically set span level. When countdown completed it will return to monitoring screen via exiting from menu. If you try to enter menu detector will ask password again. The alarms will be activated as gas applied Cancel Calibration to detector and detector exit from calibration mode.
Page 35 Under normal conditions (visual inspection in 3 months period and test/recalibration in 6 months period), the Prosense Oxygen and other toxic sensors have an expected life equal to or greater than 24 months.
Page 36 Status Codes: PRS-UM-SOMA-EN-Rev.1.1-14.01.2023...
Page 37 Spare Parts PRS-UM-SOMA-EN-Rev.1.1-14.01.2023...
Page 38 General specification Electrical Specifications: Input Voltage 12 VDC Max Power Consumption Max 3.15 Watts. Current output 4-20mA 1.0 - 3.0 mA (adjustable) Fault 2.0 - 3.0 mA (adjustable) Inhibit (during configuration/warming) 1.0 - 3.0 mA (adjustable) Calibration mode 4.0 mA to 20.0 mA Normal gas measurement 21.0 - 22.0 mA (adjustable) Maximum over range...
Page 39 Read this instruction first and keep this instruction manual always available. The following instructions apply to equipment covered by ATEX certificate number: 1. Prosense SOMA series gas detectors may be installed in hazardous area with flammable gases, vapours and mist.
Page 40 Certificate PRS-UM-SOMA-EN-Rev.1.1-14.01.2023...
Page 41 Declaration PRS-UM-SOMA-EN-Rev.1.1-14.01.2023...
Page 42 Prosense Technology's liability for any claims arising out of or related to this product will in no case exceed the order value. To the extent permitted by applicable law, these limitations and exclusions will apply regardless of whether liability arises from breach of contract, warranty, tort (including but not limited to negligence), by operation of law, or otherwise.

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