sgx sensortech (is) ltd registered in england no. 0 8067077 a1a-IR600_ser version 7, septem ber 2010 features configured for carbon dioxide (ir601), hydrocarbon s (ir602, ir603) and acetylene (ir604) sensing ranges 0 - 2% vol. (opt. 0 - 5% vol.) for c o 2 , 0 - 100% lfl (opt. 0 - 100% vol.) for hydrocarbons diffused gas sampling via sinter low power reference channel for self-compensation special gold plated optical/gas cavity for stable s ignal levels operational in varying ambients of temperature, pressure and humidity fast response rugged stainless steel construction no moving parts resistance to corrosion immunity from poisoning reliable fail-safe operation low maintenance sealed preamplifier/buffer electronics compatible with sgx sensortech tx600 circular transmitter board and dx600 display board accessories available for field applications atex certified ii 2g ex d iic t5 gb (t a = - 20 to +60 c) csa certified -- file 107498 description the IR600 series are designed to detect and monitor the presence of co 2 , methane, broadband hydrocarbons and acetylene using the same non-dispersive infrared (n dir) principle as used in the sgx sensortech range of mini ature infrared gas sensors. dual detector channels are us ed with a reference for background compensation. a temperatu re sensor is mounted for temperature compensation. the ir601 is filtered specifically for co 2 , whereas the ir602 and ir603 are cross-sensitive to a range of hydroca rbons. the ir603 covers the wider range but has a slight r esponse to water vapour when the rh is high. the ir602 is f iltered to a narrower waveband, more specific to methane and s hows less response to the water levels typically found i n mining applications. the ir604 is narrowly filtered for ac etylene, but has some response to water due to the close pro ximity of the water absorption bands. for more information , refer to infrared sensor application note 1. IR600 sensors are designed to be integrated with fi xed gas detection systems. their construction is a stainles s steel flameproof enclosure with an integral stainless ste el sinter for the safe entry of the gases being tested. three types of mounting thread are available to all ow easy fixing to the junction box of the fixed system. on the front face there is an external m46 thread for attaching optional accessories for use in different applications. the three accessories available are: flow cap, weather cap an d quick calibration hood. the IR600 series incorporate an inbuilt and sealed preamplifier/buffer that must be coupled directly t o a transmitter/display as typified by the sgx sensortech tx600 circular transmitter and display boards. the IR600 lead in/out terminates in an 8-pin connector. certifications the IR600 series is certified by sira certification ser vices, eu notified body no. 0518. certificate number bas01atex2110x certifies it as flameproof equipment to en60079-0:2006 (including amendments a1 and a2) and en60079-1:2007 subject to the instructions specific to hazardous area installatio ns . the IR600 series is certified by csa international for class 1, groups b, c and d hazardous locations for both ca nada and the usa. certification for canada is as products in class 48 18 03 to the requirements of csa standards c22.2 no. 30-m1986 and c22.2 no. 142-m1987 and is covered by file no. lr107498. operation the ndir operating principles are described in the following sgx sensortech infrared sensor application notes, available from the sgx sensortech website: note 1: background to ndir gas sensing note 2: signal processing note 3: software design note 4: electronics design note 5: determining coefficients for linearisation and temperature compensation note 6: advice for using infrared gas sensors in min ing applications data sheets for the recommended transmitter and dis play are: a1a-tx600 and a1a-dx600. IR600 series miniature infrared gas sensors for hazardous areas free datasheet http:///
sgx sensortech (is) ltd registered in england no. 0 8067077 a1a-IR600_ser v ersion 7, page 2 handling precautions 1. do not allow sensors to fall on the floor. this could cause lamp filament breakage, damage to the pins an d the gas entrance aperture. 2. do not apply mechanical force against the gas en trance aperture. 3. do not immerse sensors in water or other fluids. 4. protect the gas entrance aperture against dust in gress and sprayed materials. 5. anti-static handling precautions must be taken. fractional absorbance curves these show the sensitivity versus concentration bef ore linearisation for the range of gases. for further e xplanation, refer to the infrared sensor application notes. typical sensitivity to 0 to 2% vol. carbon dioxide (ir601) typical sensitivity to methane (100% lfl = 5% vol) (ir603) typical sensitivity to methane (100% lfl = 5% vol) (ir602) typical sensitivity to ethylene (100% lfl = 3% vol.) (ir602, ir603) typical sensitivity to propane (100% lfl = 2.4% vol.) (ir602, ir603)
sgx sensortech (is) ltd registered in england no. 0 8067077 a1a-IR600_ser v ersion 7, page 3 typical sensitivity to benzene (100% lfl = 1.5% vol.) (ir603) typical sensitivity to acetylene (100% lfl = 2.5% vol.) (ir604) instructions specific to hazardous area installations (ref. eu atex directive 94/9/ec, annex ii, 1.0.6) 1. the head is classified as flameproof equipment a nd is marked: bas01atex2110x ii 2g ex d iic t5 gb t a = - -- - 20 c to +60 c 2 w/5 v max the head should only be used within the limits impo sed by this certification and by these conditions o f use. 2. the head may be used in a hazardous area without fu rther mechanical protection. however, the cable req uires mechanical protection and must be terminated in a suitable enc losure. 3. the he ad must be efficiently earthed (grounded). this may be achieved by mounting it into an appropriate ear thed metal junction box or into a non- metallic junction box fitted with an earth continui ty plate used in accordance with the box manufacturer's instructions. there are no internal connections to the sensing head body. 4. in the event that the head becomes embedded in a junction box by over- tightening or corrosion, it may be released by the use of a spanner or wrench on the two flat surfaces on the sides of the body. 5. there are no user serviceable parts inside the body of the sensing head, and no attempt should be made to open the body for any purpose. the unit is non-repairable. 6. the head has not been assessed as a safety devic e (ehsr 1.5). 7. when installed in outdoor locations where rain or spray could interfe re with the safe working of the head, or in indoor locations where water jets, sprays, or hoses are us ed routinely for cleaning purposes, the head should be fitted with the weather cap that is available as an accessory. 8. the end- user/installer should be aware that the certificati on of the head relies in its construction on the us e of the following materials, which are suitable for most common appli cations: enclosure ........... stainless steel sinter .................. stainless steel bushing .............. epoxy resin in accordance with the note in en60079-0:2006 clause 6.1(a), the end- user/installer shall inform the manufacturer of any adverse conditions that the head may encounter. th is is to ensure that the head is not subject to con ditions that may cause degradation of these materials.
sgx sensortech (is) ltd registered in england no. 0 8067077 a1a-IR600_ser v ersion 7, page 4 technical specification mechanical dimensions see outline, page 5 body material stainless steel weight 435 g environmental ambient temperature range: for operation for storage - 20 to +55 c - 20 to +60 c operational pressure range 700 to 1300 hpa humidity range for operation and storage 0 to 95% n on-condensing vibration complies with en61779-1 ingress protection see weather cap accessory, page 6 electrical input/output connector wiring see outline, page 5 maximum power supply 180 mw lamp supply +5 v max, 60 ma recommended note: applying >5 v will reduce the lamp lifetime performance note: for test purposes, all data taken using tx600 transmitter with these conditions: - sgx sensortech linearisation and temperature compens ation algorithms; see infrared sensor application no tes. - lamp modulation 0.4 - 5.0 v, square wave, at 4 hz and 50% duty cycle. - ambient temperature (20 c) and pressure (1010 hpa). - all gases diluted in nitrogen. sensor type ir601 ir602 ir603 ir604 gas carbon dioxide hydrocarbons acetylene sensing range 0 - 3000 ppm 0 - 2.0% vol. 0 - 5.0%vol. 0 - 100% lfl 0 - 100% vol. 0 - 100% lfl 0 - 100% vol. maximum response time (t90) <40 s voltage output in nitrogen for active and reference channels 4.0 0.5 v centred on 2.5 v sensitivity to gas over full concentration range (before linearisation) see fractional absorbance curves maximum deviation from linearity 0.1% vol. maximum variation of zero from - 20 to +55 c 10 ppm/ c 20 ppm/ c resolution (dependent on electronics) 100 ppm 500 p pm maximum non-reproducibility of zero at 20 c 100 ppm 500 ppm maximum non-reproducibility of sensitivity at 20 c 200 ppm < 1000 ppm long-term zero drift/month < 100 ppm 500 ppm response to 0 - 90% change in rh at 20 c (in target gas) 0% vol. +0.1% vol. +0.3% vol. +0.5% vol. mtbf (lamp dependent only) >10 years for 5 v operation
sgx sensortech (is) ltd registered in england no. 0 8067077 a1a-IR600_ser v ersion 7, page 5 outline (all dimensions in millimetres; dimensions without limits are nominal) table 1 - connections he14 crimp socket, 8-way double-row, single orientation socket wire co lour description 1 red temperature output 2 yellow active detector output 3 blue 0 va 4 black 5 va 5 orange 2.5 v reference 6 brown reference detector output 7 green lamp 8 purple lamp accessories (all dimensions in millimetres) three accessories are available to complement the i r600 series gas detection head. these accessories are sho wn on page 6, with the IR600 in place. table 2 - mounting options the sensing head is supplied with one of three diff erent mounting threads at the user's choice. thread thread code dimension x (mm) metric 20 x 1.5 mm 1 16.00 anp (taper) ?" - 14 npt 2 19.85 anp (taper) ?" - 14 npt 3 20.16 taper threads are manufactured in accordance with ansi/asme b1.20.1.
sgx sensortech (is) ltd registered in england no. 0 8067077 a1a-IR600_ser v ersion 7, page 6 flow cap das546633aa the flow cap allows the IR600 to be used in applica tions where it is to be aspirated permanently with a pump ed or pressurised sample. the cap is made of 316 stainles s steel and can be used in a variety of applications involv ing pumped sampling analysis or detection systems. weather cap das546632aa the weather cap protects the IR600 from water when used in external locations, where rain or spray cou ld interfere with the safe working of the head, or in internal locations where water jets, sprays or hoses are use d routinely for cleaning purposes, etc. the cap is ma de of 316 stainless steel and has been tested to ip64 for effectiveness, and also to ensure that it does not significantly affect the IR600's performance. quick calibration hood dpp546618da the quick calibration hood is constructed from polypropylene, and provides a convenient means of supplying test gases to the IR600 in the field, for calibration and checking purposes. the assembly push-fits into the central gas access recess of the head, and is desig ned to accommodate 6 mm id or ?" flexible tubing. ordering information IR600 series sensors, tx600 transmitter boards and dx600 display boards may be ordered as individual it ems or as combinations. the thread code must be included with a sensor orde r, e.g. ir601/1 for a carbon dioxide sensor with metric 20 x 1.5 mm mounting thread. tx600 transmitter boards should be calibrated to spe cific IR600 series sensors. when an IR600 series sensor is ordered with a factor y calibrated tx600 transmitter board, the combination is referred to as a tx600 series assembly. for example, a customer requiring a tx600 transmitt er board calibrated with an ir601/1 sensor should order : tx601/1 (i.e. ir601/1 + tx600 = tx601/1).
|
