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Summary of Contents for Crowcon Xsafe Bright
- Page 1 Xsafe Bright Gas Detectors with Display and Relays Installation, Operation and Maintenance Instructions M077910 Issue 4 March 2020...
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Page 3: Table Of Contents
Contents 1. Introduction ................1 1.1 Product overview .............. 1 1.2 Safety information ............1 1.3 Storage instructions ............2 1.4 Product labels ..............2 1.5 Product dimensions ............3 1.6 Exploded view ..............4 2. Installation ................5 2.1 Location ................5 2.2 Mounting ................. - Page 4 4. Specifications ................24 5. Spare parts ................25 6. Warranty ................26 Appendix ..................28...
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Page 5: Introduction
PID sensors or infrared (IR) carbon dioxide gas sensors. Please refer to the product identification label to determine the type of sensor fitted. Xsafe Bright has no hazardous location capability. It may not be installed in a zoned hazardous location. For such applications Xgard Bright is advised. -
Page 6: Storage Instructions
Xsafe Bright. 1.3 Storage instructions Some types of sensor available with Xsafe Bright have limited life when left un-powered and/or may be adversely affected by temperature extremes or environmental contamination. Ideal storage conditions are 20˚C and 60%RH. -
Page 7: Product Dimensions
Introduction 1.5 Product dimensions All dimensions in millimetres Diagram 1: Xsafe Bright dimension view... -
Page 8: Exploded View
Introduction 1.6 Exploded view Diagram 2: Xsafe Bright exploded view... -
Page 9: Installation
The following points should be noted when locating gas detectors: • To detect gases which are lighter than air, detectors should be mounted at high level and Crowcon recommend the use of a collector cone (Part No. C01051). -
Page 10: Mounting
Installation 2.2 Mounting Xsafe Bright should be installed at the designated location with the sensor pointing down. This ensures that dust or water will not collect on the sensor and stop gas or solvents being measured entering the cell. Care should be taken when installing the detector to avoid damaging the painted surface of the enclosure. -
Page 11: General Cabling Requirement
24.2. Xsafe Bright has min voltage requirement of 10V. The alarm 2 current for Xsafe Bright (pellistor) is 95mA and the sounder output max current is 0.25 A, so a total current in alarm driving the sounder output is: Max current = 0.25 + 0.095 = 0.345 A. -
Page 12: Cabling Requirement Multidrop Modbus
Example Calculation 2 As example calculation 1 but without the sounder. Xsafe Bright pellistor requires a dc supply of 10-30V, at max current in alarm 2 of 95mA. Ensure there is a minimum of 10V at the detector, taking into account the voltage drop due to cable resistance. -
Page 13: Calculating Acceptable Cable Length And Detector Quantities
RS-485 A and B connections to the appropriate terminals. Two sets of RS-485 terminals and a spare cable gland entry (sealed with a stopping gland by Crowcon) are provided to enable signals to be ‘looped’ to the next detector easily. - Page 14 5. The maximum detector voltage of 30V must not be exceeded. Example Calculation using the above rules How many Xsafe Bright can be put on a multidrop cable if: 1. The controller has a guaranteed minimum output voltage of 18V.
- Page 15 Installation So consider the voltage to the detector furthest (n=1) from the controller has to be 10V. Each cable segment has a there and back resistance of 12.1 x 2 x 20/1000 = 0.484 ohms. So the cable volts drop to detector (n=2) is: Vc = 0.070 x 0.484 = 0.03388V V(n=2) = V(n=1) + Vc = 10.0338 V Now the voltage at detector (n=3) is...
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Page 16: Earthing Requirements
Allow sufficient length of cable to the detector, fit shroud if required, pass the cable through cable gland. 1. Screw the gland Entry into the Xsafe Bright M20 cable Entry. Using two spanners or wrenches, hold the gland Entry in position to prevent rotation and tighten the Middle Nut until resistance is felt between the Seal and cable. - Page 17 Installation 2. Hold the Middle Nut in position to prevent rotation and tighten the Backnut until resistance is felt between the Seal and cable, then turn the Middle Nut through a further half to one full turn to complete the Outer Seal. Armoured cable Backnut Compression Spigot...
- Page 18 Installation 3. Remove the Inner seal from the Entry. Place the Entry over the Armour Spigot. Move the Middle Nut to meet the Entry. 4. Hold the Entry in position with a spanner/wrench to prevent rotation. Hand tighten the middle Nut to the Entry and turn a further half to one full turn with a spanner/wrench.
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Page 19: Fitting Accessories
Installation 2.9 Fitting accessories Collector cone (product code C01051) Aids detection of lighter than air gases such as hydrogen or methane. Includes a pipe spigot for application of bump test gas. Spray deflector (product code C01052) For outdoor installations and sensor protection from water sprays. -
Page 20: Operation
3.1 Operation panel The Xsafe Bright operation panel comprises an OLED screen, a three-colour status LED and two magnetically operated Hall Effect switches. The screen displays white characters on a black background and can be viewed clearly even in bright sunlight. -
Page 21: Start Up
Operation 3.3 Start up When the Xsafe Bright is powered up, the unit will perform internal diagnostic checks whilst the display will show a Crowcon logo. This procedure will be displayed for about 45 seconds followed by displaying a warming up status for about 120 seconds. -
Page 22: Menu Functions
Operation 3.4 Menu functions Enter/Menu key Scroll key From the gas display screen, use the supplied magnetic wand to select the Enter/Menu key to show password screen. Enter the password: ‘0000’ to display the following menu. Select the Scroll key to change the displayed number, and the Enter/Menu key to move to the next integer. -
Page 23: Zero
Adjust the value shown to match the calibration gas concentration, to continue, long press left key ‘/OK’ to accept the calibration level. Connect the calibration cap to the Xsafe Bright and then connect the appropriate gas cylinder to the adapter. When the gas reading is stable press the... -
Page 24: Routine Maintenance
Ensure the associated control panel is inhibited so as to prevent false alarms. Service and maintenance work should be carried out by Crowcon, an approved service centre or by suitably qualified and trained personnel. Site practices and conditions will dictate the frequency with which detectors are tested and calibrated. -
Page 25: Ir Carbon Dioxide
4. Fit the replacement sensor (having checked that the part number matches that stated on the detector junction box label). Take care to align the locating pins correctly with the slots in the Xsafe Bright enclosure. 5. Re-fit the sensor retainer having first inspected the sinter to make sure that it has not become contaminated. -
Page 26: Pid
• The baseline is unstable or shifts when the sensor is moved • Sensitivity of the sensor has dropped 3.11 Maintenance and cleaning of the PID sensor: For cleaning and maintenance of the PID please refer to Crowcon Application Note PID-AN-001. Discarding the PID electrode stack The electrode stack does not have any toxic components, however, if it has been contaminated by toxic materials, show due care when disposing. - Page 27 Operation electrode stack wing clips are engaged, and the top faces of the electrode stack and sensor house are flush. 3. Refit the sensor into the sensing equipment. 4. Re-calibrate the gas detector in accordance with manufacturer’s instructions. Ordering spare components Quote the order code below: 10.6eV lamp for PID-A1 Electrode stack for PID-A1...
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Page 28: Specifications
24Vdc (nominally), 0.7A maximum load Operating temperature -40°C to +70°C (-40°F to 158°F) Note: sensor operating temperatures vary. Refer to the sensor module datasheet or contact Crowcon for specific sensor data. Humidity 0 to 95% RH, non-condensing Repeatability +/- 2% FSD... -
Page 29: Spare Parts
Spare parts 5. Spare parts Part No Description C01647 Xgard Bright Spare/Replacement M4 Earth Stud Assembly M04885 Xgard Bright Spare Sensor Seal M03871 Xgard Bright Threaded Hex Spacer 15mm (M4) M03870 Xgard Bright Threaded Hex Spacer 10mm (M4) M03760 Xgard Bright Spare M4 x 8 Posi Pan Head Screw (Customer may require 7) M03810 Xgard Bright M3x6 Grub Screw (Customer may require 2) -
Page 30: Warranty
Limitation of Liability: Except where prohibited by law, Crowcon will not be liable for any loss or damage arising from the Crowcon product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including... - Page 31 Our postal address is: Crowcon Detection Instruments Ltd. (UK Head Office) 172 Brook Drive Milton Park Oxfordshire OX14 4SD...
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Page 32: Appendix
Appendix List of VOC chemicals measured by Xsafe Bright PID Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Acetaldehyde C2H4O 10.23 Acetone C3H6O 9.69 1.17 Acrolein C3H4O 10.22 Allyl alcohol C3H6O 9.63 Allyl chloride C3H5Cl 10.05 Ammonia 10.18... - Page 33 Appendix Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Butene, -1 C4H8 9.58 Butoxyethanol, -2 C6H14O2 Butyl acetate, C6H12O2 9.91 Butyl acrylate, C7H12O2 ~9.6 Butyl mercaptan C4H10S 9.15 Butylamine, n- C4H11N 8.71 Camphene C10H16 Carbon disulfide 10.08 Carbon tetrabromide CBr4 10.31...
- Page 34 Appendix Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Dichloro-1-propene, 2,3- C3H4Cl2 10.5 Dichlorobenzene o- C6H4Cl2 9.06 Dichloroethene, 1,1- C2H2Cl2 Dichloroethene, cis-1,2- C2H2Cl2 9.66 Dichloroethene, trans-1,2- C2H2Cl2 9.65 Dicyclopentadiene C10H12 7.74 Diesel Fuel Diethyl ether C4H10O 9.53 Diethyl sulphide C4H10S 8.43...
- Page 35 Appendix Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Ethanolamine C2H7NO 10.47 Ethoxyethyl acetate, -2 C6H12O3 Ethyl acetate C4H8O2 10.01 Ethyl acrylate C5H8O2 10.3 Ethyl benzene C8H10 8.76 0.56 Ethyl butyrate C6H12O2 Ethyl hexyl acrylate, -2 C11H20O2 Furfural C5H4O2 9.21...
- Page 36 Appendix Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Isobutyl acrylate C7H12O2 Isobutylene C4H8 9.24 Isobutyraldehyde C4H8O Isooctane C8H18 9.86 Isopentane C5H12 10.32 Isoprene C5H8 8.85 Isopropanol C3H8O 10.17 Isopropyl acetate C5H10O2 9.99 Isopropyl chloroformate C4H7O2Cl 10.2 Jet Fuel...
- Page 37 Appendix Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Methyl acrylate C4H6O2 10.25 Methyl bromide CH3Br 10.54 Methyl ethyl ketone C4H8O 0.96 9.51 Methyl isobutyl ketone C6H12O Methyl isothiocyanate C2H3NS 9.25 Methyl mercaptan CH4S 9.44 Methyl methacrylate C5H8O2 1.31...
- Page 38 Appendix Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Methylpent-3-en-2-one, -4 C6H10O Methylpentan-2-ol, -4 C6H14O Methylpentane-2,4-diol, -2 C6H14O2 Methylstyrene C9H10 Mineral spirits Naphthalene C10H8 8.14 Nitric oxide 9.27 Nitroaniline -4 C6H6N2O2 8.85 Nitrobenzene C6H5NO2 9.92 Nitrogen trichloride NCl3 10.22...
- Page 39 Appendix Crowcon Ionisation Correction Factor Formula Potential eV (10.6ev Lamp only) Propylene oxide C3H6O 10.22 Propyleneimine C3H7N Pyridine C5H5N 9.25 Pyridylamine -2 C5H6N2 Styrene C8H8 0.45 Terpinolene C10H16 Tert-butanol C4H10O Tetrabromoethane, 1,1,2,2- C2H2Br4 Toluene C7H8 8.82 0.56 Toluene-2,4-diisocyanate C9H6N2O2 8.82...
- Page 40 UK Office Singapore Office Crowcon Detection Instruments Ltd Crowcon Detection Instruments Ltd 172 Brook Drive, Block 194, Pandan Loop Milton Park, #06-20 Pantech Industrial Complex Abingdon Singapore 128383 Oxfordshire Tel: + 65 6745 2936 OX14 4SD Fax: +65 6745 0467 Tel: +44 (0) 1235 557700 Email: sales@crowcon.com.sg...
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