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OLC(T)100

Technical manual

The detector may be opened in a gaseous explosive zone (dusty non-explosive)
only to change the sensor block or for maintenance or to connect a compatible
intrinsically safe voltmeter with the following characteristics:

•

Certified for use in explosive atmospheres (Group IIc), no generator of
current or voltage

•

Ui max <= 28V; Ii max <= 93.3 mA

•

≤

3.5 mH

•

≤

44 nF under 28V ; Ci

≤

20 nF under 10.5 V ; Ci

≤

0.88 µF under

8.6V

Содержание OLC 100

Страница 1: ...P N NPO100GB rev C...

Страница 2: ...ut the written consent of Industrial Scientific Oldham S A S All of the information that is provided in this document is accurate to the best of our knowledge As a result of continuous research and de...

Страница 3: ...Necessary equipment 13 Regulations and conditions of use 13 Electrical power supply 14 Transfer curve 14 Location of the detector 15 Detector positioning 15 Connector cable 16 Cable connection 17 Sco...

Страница 4: ...47 General Specifications 48 Catalytic head OLCT100 XP 49 Toximetric heads OLCT100 XP and OLCT100 IS 51 Semiconductor heads OLCT100 XP 53 Infrared head OLCT100 XP IR 54 Chapter 11 Specific instruction...

Страница 5: ...assuming responsibility on behalf of INDUSTRIAL SCIENTIFIC OLDHAM even though they may be involved in the sale of INDUSTRIAL SCIENTIFIC OLDHAM products INDUSTRIAL SCIENTIFIC OLDHAM shall not be respo...

Страница 6: ...AL SCIENTIFIC OLDHAM by INDUSTRIAL SCIENTIFIC OLDHAM personnel or by personnel authorised by INDUSTRIAL SCIENTIFIC OLDHAM Guarantee Under normal conditions of use and on return to the factory parts an...

Страница 7: ...rameter is either conducted directly via a connecting cable to a dedicated central measurement unit as with the OLC100 explosimeter that operates on the principle of the Wheatstone bridge Such a measu...

Страница 8: ...omprises the following elements Id Description 1 Company label 2 Cover 3 PCB protector for OLCT version 4 PCB 5 Cable gland inlet 6 Enclosure 7 Sensor block 8 Nozzle 9 Ground connection 10 LEL sensor...

Страница 9: ...ble being connected to the central unit measurement unit automation 2 Sensor block connector 3 Calibration ribbon connector 4 4 mA adjustment 5 Push button access for 4 mA adjustment 6 Zeroing 7 Sensi...

Страница 10: ...er of the organisation that provided the OLDHAM production quality certification INERIS 5 Warning 6 Type of gas detected and range of measurement 7 Maximum ATEX certification temperature excluding met...

Страница 11: ...r The OLCT100 range of detectors is provided with an amplifier producing a 2 or 3 wire 4 20 mA analog output These are transmitter detectors and therefore the letter T OLC100 Enclosure Explosion proof...

Страница 12: ...e Detection of toxic gases Electrochemical sensor Or SC Electrochemical sensor Detection of oxygen Electrochemical sensor Electrochemical sensor Detection of CO2 Infrared sensor 4 20 mA output 2 wires...

Страница 13: ...f necessary Tools Fixing hardware Regulations and conditions of use The installation should meet all the regulations currently in force for installations in explosive atmospheres in particular the sta...

Страница 14: ...e curve shown gives the transmitter output current as a function of the gas concentration If the user connects the transmitter to a unit other than one that is provided by ISC Oldham they should be ce...

Страница 15: ...found at ceiling height Gas densities are provided on page 30 Detector positioning The detector shall be installed with the detector sensor pointing downwards For explosive gas detectors only any tilt...

Страница 16: ...mation unit by a shielded instrumentation cable armored if necessary The choice of cable will be dictated by the particular requirements of the installation distance and type of detector see table bel...

Страница 17: ...zone xx xx 09 15 EG SF or EG FA or EG PF U 300 compatible with M87202 The maximum permissible length will depend on the cross section of the cable conductors see table and on the minimum supply voltag...

Страница 18: ...ored and unarmored cable 054 Figure 10 implementation of a cable entry type of simple compression Cable connection The connection of the cable between the detector and central unit should be made with...

Страница 19: ...on 19 022 Figure 11 connections for a 2 wire 4 20 Ma detector 024 Figure 12 connections for an intrinsically safe 2 wire 4 20 Ma detector with a Zener diode 023 Figure 13 connections for a 3 wire 4 20...

Страница 20: ...ground terminal to earth according to the regulations This ground connection may however be taken from the terminal on the screw fixing the PCB to the inside of the housing 028 Figure 15 Ground connec...

Страница 21: ...pecified range of measurement can damage the electrochemical sensors Inspection or calibration is then recommended In the presence of high concentrations of carbon dioxide CO2 1 vol the oxygen measuri...

Страница 22: ...y Bottle of pure air Bottle of standard gas of suitable concentration for the measurement range between 30 and 70 of the measurement range Commissioning Prior checks Check the following points Wiring...

Страница 23: ...nductor sensor 4 hours Infra red detector 2 hour Opening the cover This stage is necessary for the 4 mA check zeroing and calibration of the detector Unscrew the lid of the enclosure by using a tool p...

Страница 24: ...Proceed as follows 034 Figure 16 Zeroing OLC100 1 Inhibit any alarm signals on the central unit 2 Place the calibration shroud onto the detector head Figure 16 A 3 Connect the calibrator shroud to the...

Страница 25: ...standard gas bottle D by using a flexible hose B 4 Open the valve on the standard gas bottle C flow rate 30 to 60 litres hr 5 After the measurement has stabilized approx 2 minutes read the display of...

Страница 26: ...lar Figure 18 H 3 Insert the measurement lead plug into connector A 4 Place the calibration shroud on the detector head D 5 Connect the calibration shroud to the pure air bottle G by using a flexible...

Страница 27: ...e gas to be detected If the user would like to calibrate the detector with a gas other than that detected and programmed in the factory reference should be made to the table on page 30 by using the re...

Страница 28: ...ge displayed mV 4 mA 16 mA x bottle concentration Sensor range For example for a range of 1000 ppm CO with a standard gas bottle of 300 ppm the voltage displayed will be Voltage displayed mV 4 mA 16 m...

Страница 29: ...00 18 0 9 2 35 1 75 1 25 1 15 Ammoniac NH3 15 00 30 20 100 0 6 0 90 0 65 0 50 0 45 Butane C4H10 1 50 8 50 60 2 0 1 90 1 50 1 00 0 90 Ethane C2H6 3 00 15 50 135 1 0 1 50 1 10 0 80 0 75 Ethanol C2H6O 3...

Страница 30: ...ay background gases recommended for calibrating the detector Example first line of table Calibration of an acetone detector with a standard gas comprising 1 volume butane Value to be displayed 1 injec...

Страница 31: ...ts depends on the industrial application where the detector is in use Frequent inspections should be made in the months following the commissioning of the installation and should then become more wide...

Страница 32: ...mediately For use in dusty explosive atmospheres the user should undertake full and regular cleaning to avoid the build up of dust The maximum permissible thickness of a dust layer must be less than 5...

Страница 33: ...described in this chapter are reserved for authorized trained personnel only Inspection and maintenance shall be carried out in accordance with standards EN60079 17 or IEC 60079 17 with whatever edit...

Страница 34: ...the and multimeter sockets respectively 0 2 VDC range or similar 2 Insert the measurement lead plug into connector A 3 Use a small screwdriver to press the 4 mA adjust button D The instrument then sen...

Страница 35: ...Check standard gas concentration High concentration of explosive gases D r glage Zero setting Calibration OLCT100 Detector Observed fault Possible cause Action Line current 0 mA Connector cable Power...

Страница 36: ...e procedure below Inhibit any alarm signals on the central unit Switch off the supply to the detector For a catalytic sensor first remove the PCB connector Loosen the locking screw on the detector hea...

Страница 37: ...enance screw B on the detector head cover Disconnect the high temperature cable from terminal block A on the detector head Connect the high temperature cable to terminal block A 048 Figure 22 OLC100HT...

Страница 38: ...s should be between 30 and 70 of the detector s scale of measurement 042 Figure 23 calibration kit Use Proceed as follows 1 Connect the tube Figure rep B to the cap Figure rep A and to the pressure re...

Страница 39: ...ct on measurement no effect if calibration is carried out under the same conditions shroud flow rate Effect on response time none 200 6327910 Splash guard kit Protects the detector against splashes Ef...

Страница 40: ...passing through a sheath Requires the use of the gas circulation head Effect on measurement no effect Effect on response time negligible 224 6793322 Mounting kit Enables a detector to be fixed to the...

Страница 41: ...ptater kit Enables the detector to be attached to the same place without having to drill more holes 220 6793718 Cable gland Purpose Reference M20 compression gland kit for non armored cable Material s...

Страница 42: ...10 0 ppm 0 30 0 ppm and 0 100 ppm SO2 for OLCT100 6 314 025 Electrochemical sensor 0 10 0 ppm Cl2 for OLCT100 6 314 023 Electrochemical sensor 0 2000 ppm H2 for OLCT100 6 314 026 Electrochemical sens...

Страница 43: ...R23 R141b R143a R404a R507 R410a R32 R227 R407c and R408a freons for OLCT100 6 314 039 Semiconductor sensor for ethanol toluene isopropanol 2 butanone and xylene for OLCT100 6 451 626 OLC100 Board 6 4...

Страница 44: ...44 OLC T 100 Technical manual Chapter 9 Declaration of EC conformity The page below reproduces the EC declaration of conformity for the OLCT100 and OLC100 family of detectors...

Страница 45: ...9 Declaration of EC conformity 45...

Страница 46: ...46 OLC T 100 Technical manual Chapter 10 Technical specifications...

Страница 47: ...Annexe Ordering information 47 Dimensional characteristics 044 Figure 24 dimensional characteristics of the detectors M44 pitch 1 M44 pitch 1 M44 pitch 1...

Страница 48: ...upply 1 mA fault 2 mA Initialization mode Current greater than 23 mA off scale Type of cable Explosimeter screened 3 live wires HT Explosimeter screened 3 live wires Electrochemical detector screened...

Страница 49: ...nse time T50 6 seconds T90 15 seconds for Methane Lifetime typical 48 months Storage conditions 50 to 70 C 20 to 60 RH 1 bar 10 6 months maximum Warm up time max 2 hours to first switching on power Sp...

Страница 50: ...50 OLC T 100 Technical manual Mark on sensor VQ1 4F poison resistant sensor Figure 25 mark on VQ1 sensor...

Страница 51: ...ement range ppm XP Version IS Version Temperature range C RH AsH3 Arsine 1 00 20 to 40 20 90 Cl2 Chlorine 10 0 20 to 40 10 90 ClO2 Chlorine dioxide 3 00 20 to 40 10 90 CO Carbon monoxide 100 300 1000...

Страница 52: ...iH4 Silane 50 0 20 to 40 20 95 SO2 Sulfur dioxide 10 0 30 0 100 20 to 50 15 90 Specific characteristics table 2 2 Type of gas Accuracy ppm Life months Response time T50 T90 s Storage conditions Warm u...

Страница 53: ...cteristics Measurement principle semiconductor Temperature range 20 C to 60 C Relative humidity 20 to 95 RH non condensing relative humidity Pressure atmospheric 10 Lifetime typical 36 months Storage...

Страница 54: ...head OLCT100 XP IR Measurement range 0 100 LEL explosive gases 0 5 CO2 carbon dioxide Measurement principle Infra red absorption Accuracy CO2 version 3 of full scale at mid scale 20 C LEL version 5 of...

Страница 55: ...s of explosion The information given in the following sections should be respected and taken into account by the manager of the site where the equipment is installed As far as the aim of improving the...

Страница 56: ...P66 and shall be installed in accordance with standard ICE EN 60079 14 whatever edition is in force and possibly in accordance with further requirements related to the local or national regulations Th...

Страница 57: ...m experience in the field The analysis of the information recorded during maintenance by our technical team has enabled us to determine the following Probabilities of Failure on Demand under normal co...

Страница 58: ...nge the sensor block or for maintenance or to connect a compatible intrinsically safe voltmeter with the following characteristics Certified for use in explosive atmospheres Group IIc no generator of...

Страница 59: ...L 011 Acetonitrile 0 100 LEL 012 Acetylene 0 100 LEL 013 Acrylic acid 0 100 LEL 014 Acrolein 0 100 LEL 015 Butyl acrylate 0 100 LEL 016 Ethyl avrylate 0 100 LEL 017 Acrylonitrile 0 100 LEL 018 Benzene...

Страница 60: ...L 050 Propylene Oxide Epoxypropane 0 100 LEL 051 Pentane 0 100 LEL 052 Propylene 0 100 LEL 054 Styrene 0 100 LEL 055 Super SP95 0 100 LEL 056 Toluene 0 100 LEL 057 Triethylamine 0 100 LEL 058 White sp...

Страница 61: ...02 R134A 0 2 000 ppm 503 R141 0 2 000 ppm 504 R142B 0 2 000 ppm 505 R11 0 1 volume 506 R23 0 1 volume 507 Dichloromethane 0 500 ppm 508 Chloromethane Methylchloride 0 500 ppm 509 R123 0 2 000 ppm 510...

Страница 62: ...62 OLC T 100 Technical manual...

Страница 63: ...Annexe Ordering information 63...

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