Audio/Visual Alarm Combined audible and visual alarm signalling, for use with sensors and monitoring systems Environments: Mining Tunnelling Machine monitoring Features TX6831 For use with sensors and monitoring systems in hazardous areas Compact and strong moulded polycarbonate housing Certified intrinsically safe for use in Group I hazardous areas High intensity LED all-round visual alert with optional 85 db audible sounder 1 second flashing LED visual alert Choice of flashing LED visual alert colours available: Amber Blue Green Red For use with sensors and monitoring systems in hazardous areas Optional confidence alert at 15 second intervals Choice of input signal: Contact state Analogue Choice of analogue input signal: 4 to 20 ma 0.4 to 2 V User configurable alarm setpoint, can also be configured for Under or Over alarm Benefits Cost effective - self contained construction saves cost of installation and cabling The audio visual alarm can be fitted directly to some Trolex sensor/transmitters using the terminals inside the sensor housing, or can be supplied fitted directly to a junction box Simple and easy to mount - compact dimensions make it easy to fit the Audio/Visual Alarm where space is at a premium Minimal weight, the Audio/Visual Alarm weighs only 100 g Rugged design is environmentally protected to IP65 standards TX6831-DS-EN-01 Page 1 of 8
Functional Overview Supplied in a compact and strong moulded polycarbonate housing, this high-intensity LED visual alarm has an optional 85 db audible sounder. The alarm can be fitted directly to many Trolex sensor/ transmitters using the terminals inside the sensor housing, or can be supplied fitted directly to a junction box. Choice of input signal; contact state or analogue. 4 to 20 ma or 0.4 to 2 V analogue input signal compatibility, with user adjustable alarm trigger setpoint, can be configured for under or over alarm. Certified intrinsically safe for use in Group I hazardous areas, for use with sensors and monitoring systems in hazardous areas. Versions available with visual alarm only. Technical Information Light source: High intensity LEDs Input signal: Contact state - Open or Close for alarm Analogue signal with potentiometer adjustable setpoint, can be configured for Over or Under alarm Audible alarm: Alarm indication: Alarm signal out of limits: Hysteresis: Housing material: Protection classification: Nett weight: High intensity audible sounder 85 db @ 1 m (12 V dc) Flashing visual alert every 1 second Optional audible alarm Optional confidence alert at 15 second intervals Alternating LED flash with double sounder beep - when fitted 5% of setpoint Moulded polycarbonate Protected to IP65 Sounder to IP54 100 g Electrical Information Supply voltage: Power consumption: Analogue input signal: State input signal: 7.5 to 16.5 V dc 15 ma - mean 75 ma peak during LED flash 4 to 20 ma OR 0.4 to 2 V options Low: 0 V min. to 1.1 V max. High: 1.3 V min. to +Supply V max. TX6831-DS-EN-01 Page 2 of 8
Dimensions Audio Visual Alarm Enclosure Drilling Details TX6831-DS-EN-01 Page 3 of 8
Connections Unit Connections Connecting to a 4 to 20 ma Signal Loop Connecting to a 0.4 to Connecting to a Volt Connecting to a 5 V 2 V Signal Source Free Input Contact State Input Checkpoint The TX6831 Audio/Visual Alarm must only be interconnected with approved power supplies, signal sources and monitoring equipment when used in hazardous areas. TX6831-DS-EN-01 Page 4 of 8
Setup Type of Input Signal A 4 to 20 ma Analogue input 0.4 to 2 V Analogue input 5 V State input Contact State input OFF OFF ON ON Alarm Setpoint Mode B Analogue input Analogue input Voltage free contacts Alarm on Rising signal OFF Alarm on Falling signal ON Alarm on High level OFF Alarm on Low level ON Alarm on contacts Closing ON Alarm on contacts Opening ON Adjusting the Setpoint The alarm setpoint can be configured by adjusting the Setpoint potentiometer. By default the audio/visual alarm is configured with an alarm level of 50% of full scale. Connect an approved test instrument configured to measure 0 to 2 V to the Test Point. Power up the audio visual alarm, refer to the Connection diagrams on page 4 if necessary. The output voltage from the test point is linear and proportional to the alarm level, 0.4 V equals 0% of full scale and 2.0 V equals 100% of full scale. Each voltage increase of 0.016 V equals an increase of 1% of full scale. By default the audio/visual alarm is configured with an alarm level of 50% of full scale, ie. 1.2 V. With the audio/visual alarm positioned as above, turn the potentiometer clockwise increases the alarm setpoint or turn it anti-clockwise decreases the alarm setpoint. Use a small screwdriver turn the potentiometer and set the alarm setpoint to the desired level. TX6831-DS-EN-01 Page 5 of 8
Application A TX6373 Gas Sensor fitted with a TX6831 Audio/Visual Alarm - 4 to 20 ma A TX5921 Vortex Air Flow Sensor fitted with a TX6831 Audio/Visual Alarm - 4 to 20 ma TX6831-DS-EN-01 Page 6 of 8
Order Reference TX6831 - Audio Visual Alarm ATEX Group I.01 Input - 0.4 to 2 V.11 Input - 4 to 20 ma.12 Input - Contact state.14 Colour - Red.91 Colour - Green.93 Colour - Blue.94 Colour - Amber.95 With sounder.901 Without sounder.902 TX6831.... Certifications ATEX Certification Ex Certificate number: Ex Certification codes: SIRA 99ATEX2152X I M1 EEx ia I (Ta = -20 C to +60 C) Special Conditions for Safe Use Under normal or fault conditions, the internal temperature of this equipment may rise above 150 C, therefore, care shall be taken when the enclosure is opened to ensure that no dust enters the equipment. General Conditions for Safe Use Prior to installation, it is essential that user refers to the above certificate to ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex. ATEX Directive (94/9/EC) ANZEx Certification Ex Certificate number: Ex Certification codes: ANZEx 12.3005X Ex ia I (Ta = -20 C to +60 C) Conditions for Safe Use Prior to installation, it is essential that user refers to the above certificate to ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex. TX6831-DS-EN-01 Page 7 of 8
Certifications - continued Russia Customs Union Ex Certificate number: Ex Certification codes: TC RU C-GB.ГЂ.05.B.00325 PO Ex ia I Ma X Conditions of Use Prior to installation, it is essential that user refers to the above certificate for any specific conditions of use. The user must ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex. South Africa MASC Ex Certificate number: Ex Certification codes: MASC M/11-222X Ex ia I (-20 C Ta +60 C) Specific Conditions of Use Under normal or fault conditions, the internal temperature of this equipment may rise above 150 C, therefore, care shall be taken when the enclosure is opened to ensure that no dust enters the equipment. General Conditions of Use Prior to installation, it is essential that user refers to the above certificate to ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of certificates are available from Trolex. India Test Report No: Ex certified for Group I (Mining): ERTL(E)/TES/T238/0064/11-12 Ex ia I (-20 C Ta +60 C) Conditions of Use Prior to installation, it is essential that user refers to the above test report for any specific conditions of use. The user must ensure that the termination and cable parameters are fully complied with and are compatible with the application. Copies of test reports are available from Trolex. Copyright and Trademarks 2015 Trolex Limited. Trolex is a registered trademark of. The use of all trademarks in this document is acknowledged. Document history: Issue 01 2 April 2015 First publication of this document Newby Road, Hazel Grove, Stockport, Cheshire SK7 5DY, United Kingdom +44 (0)161 483 1435 sales@trolex.com TX6831-DS-EN-01 Page 8 of 8