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1. Beg siNTROL Snifter User Manual mew Version 1 3 08 09 2009 Dg siNTROL Table of Contents 1 DIN PRODUC TOWN baci o aa 3 1 1 Sally esros DONE IRI RE NE ea e CNP RI NR E M 3 1 2 Product ovevieW nenn 3 1 3 How does it va 3 2 INSTALLATION et 4 2 1 Selecting the installation location 4 2 2 Installing the sehs r z 2 Cp 6 3 WIRING er 6 4 TECHNICAL SPECIFICATION amp beata p i maine cai ie aa na 8 5 DIMENSIONS PT re ll ia 9 6 OPERATION cica dai di a ee 10 7 AUTOMATIC SE TUP 11 8 MAINTENANCE 2 4 13 9 TROUBLESHOBTING uns ee near 13 9 1 The Monitor is not giving relay output signal 13 9 2 The Monitor is not responsing after autosetup procedure 13 NOTES nina ee ehe 14 Bg siNTROL 1 INTRODUCTION This manual describes how to install and use SINTROL s triboelectric dust monitor Snifter Sintrol shall not be liable for any loss or damage whatsoever arising from use of any information or details therein or omission or error in this manual or any misuse of the product 1 1 Safety Snifter requires 12 24 VDC power supply Although 12 24VDC voltage level is considered safe but the process gas or dust particulates can be hazardous to health Unless the process conditions are known to
2. C Power consumption 3W Cable power signal 2 meter 4 pair cable Installation 1 2 BSPT Weight Approx 0 7 kg This instrument conforms to the following standards ce Product standard Reference standard electrical equipment for IEC 61326 1 2005 First Edition measurement control and laboratory use EMC requirements Bg SINTROL 5 DIMENSIONS BSPT Figure 5 Structure and dimensions of Snifter Bg SINTROL 6 OPERATION The Snifter Dust Monitor measures the dust level in a gas flow by monitoring electrostatic dynamic discharge when charged dust particles hit or pass near by the probe There are two solid state relay contact alarm outputs and three colour indicator LED in front cover The alarm relays are arranged such that relay 2 is ON connected in normal operation Relay 2 turns OFF and relay 1 ON when dust level exceeds 5x normal dust level and both relays are ON when dust level exceeds 20x normal The alarm threshold factory default values Alert gt 5x normal dust level Limit 1 value Alarm gt 20x normal dust level Limit 2 value Three state of LED indicator GREEN ORANGE RED NORMAL ALERT ALARM dust concentration dust concentration gt 5x NORMAL gt 20x NORMAL Dg SINTROL Relay and LED indicator functions 7 AUTOMATIC SETUP To be able to detect variations in dust flow a
3. be entirely safe suitable precautions must be taken before any entry is made into the duct for installation or maintenance purposes Take appropriate precautions when installing the monitor e The unit may be installed in ducting containing particulate hazardous to health The particulate may be inflammable explosive or toxic e The gas can be hot and pressurised 1 2 Product overview The Snifter Dust monitor is a microprocessor based self adjusting device equipped with two alarm relays and indication LED in front cover The Snifter is designed for filter bag leak detection It can also be used to detect blockage or stoppage in pneumatic transport and bulk solids handling It is a compact unit with the sensor and control electronics built into one IP65 enclosure which has been specifically designed for easy installation and operation The Snifter is designed for applications at up to 2 bar and 140 C 1 3 How does it work The Snifter uses proven and reliable triboelectric technology where the interaction of particles with the sensor rod causes a small electrical charge to pass between the particulate and sensor It is this small electric charge that provides the signal monitored by the electronics the signal generated is proportional to the dust level even if particles accumulate on the sensor Experience has shown that this method of monitoring dust level in gasses offers accurate results with minimum maintenance Dg
4. evels should be avoided 5 The units must not be installed in direct sunlight or in areas where the ambient temperature is above 60 C Bg siNTROL The mounting socket in the middle of the side or in the middle of the top The unit above horizontal axis Figure 2a Round cross section duct Figure 2b Square cross section duct Figure 3 Snifter installed on a duct NOTE The sensor must not contact the opposite wall or any other obstacle inside the duct The only allowed interaction with sensor is dust particles Dg SINTROL 2 2 Installing the sensor Once the location of the unit has been selected the Snifter with BSPT 1 2 male thread can be installed to process adapter with 1 2 female thread Make sure the installation is in the right position insert the sensor inside the adapter and rotate the Snifter until the connection is tight NOTE Do not over tighten the Snifter with process connection It may cause damage to sensor and electronics 3 WIRING Required voltage for Snifter is 12 24 VDC The snifter comes with two meter power and signal cable ready connected There are 4 pairs 8 wires in the same cable two wires for 12 24 VDC and two for relays Remaining four wires are not in use they are for factory service diagnostics purposes Connect the 12 24 VDC power supply to grey and pink wires Blue and Red wires are for relays Blue or Red gives the same voltage like
5. nd to set the alarm so that it will go on if there is excessive dust flow you must determine the typical dust flow in the application when the process is operating normally The unit has an AUTOMATIC SETUP function AUTOMATIC SETUP sets the parameters so the relays gives the alert when the dust concentration exceeds 5x the typical dust level and an alarm when 20x typical level is exceeded See table on page 13 Connect the sensor to the duct connect the power on wait 10 minutes start the auto setup procedure close the cover For AUTOMATIC SETUP you need to know that the process is running with a normal dust flow rate Then open the cover of the unit and initiate AUTOMATIC SETUP by pressing the small button see Figure 6 The green LED indicator in front cover starts blinking when AUTOSETUP PROCEDURE is going on AUTOMATIC SETUP procedure takes up to 10 minutes to be completed green LED in front cover stops blinking and Snifter is ready for use Bg siNTROL je Figure 6 Automatic setup button AUTOMATIC SETUP 1 Ensure that the process is in normal conditions Make sure that the monitor has been connected to process and powered for at least 10 minutes in order to warm up and stabilise Press the AUTOMATIC SETUP BUTTON the small button on printed circuit board Figure 6 Make sure that green LED indicator in front cover starts blinking Turn the cover of enclosure closed and wait for up to 10 minu
6. power voltage when relay latches Both relays must be connected to zero voltage 2 OV with another wire CONN1 pin number wire Colour signal name 1 WHITE 2 BROWN a Reserved for 3 GREEN _ service diagnostics 1 YELLOW 2 GREY OV i PINK V 12 24 VDC d BLUE relay S RED relay 2 Dg siNTROL Cabling Power source D PINK 2 GREY 3 BLUE relay 1 12 24 Vdc 4 RED relay2 Voltage indicator Figure 4 Wiring of power and signal cables 1 Voltage V 12 24 VDC colour PINK 2 Voltage V OVDC colour GREY 8 Signal out V 12 24 VDC Imax 170 mA color BLUE 4 Signalout V 12 24 VDC Imax 170 mA colour RED Dg siNTROL 4 TECHNICAL SPECIFICATION Snifter specifications Measurement objects Solid particles in a gas flow Particle size 0 3 um or larger Measurement range from 0 1 mg m Temperature max 140 C Pressure 2 bar Gas velocity Min 4 m s Humidity 9596 RH non condensing Measurement principle Triboelectric electrostatic dynamic detection Damping time 1 300 seconds predefined Output signals 2 solid state relays 170mA and 200mA Alarm settings Alert 5x normal dust level Alarm 20 x normal dust level Ambient temperature 20 60 C Probe SS316 L 220 mm Enclosure Aluminium Protection category IP65 Power supply 12 24 VD
7. siNTROL 2 INSTALLATION 2 1 Selecting the installation location The best location for installation of the units of the Snifter is in a section of duct where the particulate has an even distribution and the flow is as laminar as possible This is to ensure that the sensor rod comes into contact with a representative flow of particles The ideal position would be in a section of duct that has no bends valves dampers or other obstructions for a distance equal to at least three duct diameters downstream or upstream preferable 5 x duct diameter See figure 1 gt x DN 3 x DN LAN Figure 1 Recommended distances to duct bends DNzDuct Diameter In some applications a compromise must be made and the sensor will have to be fitted in a position that satisfies the majority of above requirements The Snifter must be attached to metal ductwork so that they will be electrically shielded from interference and be provided with a ground reference 1 The unit shall be installed in a position where the gas flow passes the sensor rod in a 90 angle 2 In round cross section ducts the unit can be installed in any position above the horizontal axis between 9 o clock and 3 o clock See figure 2a 3 For square cross section ducts the unit must be positioned in the middle of the top or in the middle of one of the sides See figure 2b 4 Although the sensor is not affected by vibration very high vibration l
8. tes until the green LED stops blinking indicating the Automatic Setup sequence has finished The unit is ready for use Dg siNTROL 8 MAINTENANCE Snifter Dust Monitor needs very little maintenance To achieve maximum reliable operation the recommended maintenance interval is 2 months Maintenance is done by removing the unit from the process and cleaning the sensor rod to prevent signal leakage to ground If the particles in the gas are sticky and tend to build up the cleaning needs to be done more often Check the PC board is firmly connected inside the enclosure Check LED indicator cable and signal power cable connectors are connected correctly 9 TROUBLESHOOTING 9 1 The Monitor is not giving relay output signal Check the power and signal wiring are connected correctly 2 Check there is power on cover LED glows 3 Do the auto setup procedure green LED starts blinking stops when ready If the monitor is not giving any relay output signal after checks 1 2 and 3 contact your local distributor 9 2 The Monitor is not responsing after autosetup procedure 1 Check that there is normal process going on and there were normal operation conditions during auto setup 2 Check the power and signal wiring are connected correctly 3 Check the signal is not leaking to ground There is NO contact between metal sensor probe and duct wall Ensure the gas is not condensing causes signal leakage Check
9. the sticky dust does not build up on the base of the sensor and no bridging between sensor probe and duct wall Dg siNTROL NOTES Dg siNTROL Sintrol Oy Ruosilantie 15 FI 00390 Finland Tel 358 9 5617 360 Fax 358 9 5617 3680

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