BW Technologies GasPoint Transmitter Manual PDF
Contents
1. 1 Power down the transmitter Qty Description Rating TOL Part 2 Unplug the sensor terminal block from the power board 1 1 External faceplate window cover M1147 if required ae 5 2 1 Internal hinged door faceplate cover M2345 3 Replace the component ensuring all wiring connections are complete and reassemble as shown in Figure 8 3 1 Transmitter main LCD boar PCB SIENE Refer to Installation 4 3 6 32 x inch machine Phillips screws M0262 4 Ensure all field selectable options are set measuring 5 1 Threaded stand off accepts thumbscrews M2364 range etc ae 6 2 6 32 x inch machine Phillips screws M0262 5 Apply power and reinitialize power up 6 Set the alarm setpoints if required 7 1 Plug in ribbon cable E2800 AC 8 1 Power relay board PCB E2739 1 A a 9 1 Transmitter housing c w external switch M2346K 3 I a gt r 4 gt 10 1 Sensor assembly various Figure 8 Assembly Drawing 19 GasPoint User Manual Specifications Sensor Specifications Table 16 Operating and Calibration Specifications 1 It is recommended that the calibration gas concentration for toxic sensors be 50 of the selected measuring range Factory default values are shown Auto span Values expected by the transmitter for toxic gases can be changed at any time Refer to Changing the Alarm Setpoints and Calibra2. GasPoint Installation Connecting the Controller and Power Supply Ensure the transmitter s external cover is in place before applying power Follow the procedures and recommendations in the control systems manual to complete installation Note Ensure the transmitter is tied to the controller ground to the earth ground and to the negative terminal of the power supply 1 Attach wires to the controller and power supply as shown in Figure 5 When power is applied the transmitter automatically activates 2 The LCD shows all the display elements and the elements flash twice Then each icon displays separately and stays lit until all icons are displayed The LCD backlight then activates 3 The word Test displays on the LCD The transmitter then begins a 2 minute countdown from 999 to 000 Du LEL Test During the countdown to normal operation the transmitter communicates with the sensor determines the sensor type tests the sensor integrity tests all the circuitry and allows the sensor to stabilize before normal operation begins The transmitter also determines the sensor range Once initialization is complete the transmitter enters normal operational mode in the system loop providing a signal to the controller of the gas present 4 After the countdown the LCD displays the current low alarm and high alarm setpoints Each alarm setpoint is displayed for 4 seconds To review them press and release the external
3. BW recommends that the calibration gas factory default values be changed if selecting higher measuring ranges than the factory default measuring range Refer to Changing the Alarm Setpoints and Sensor Specifications GasPoint User Manual Dip Switch Settings The dip switches are located on the upper control board To access the dip switch banks remove the top of the explosion proof enclosure loosen the control board access screw located just below the buttons and open the control door which is on slip hinges The dip switches are clearly labeled Caution The transmitter must be powered down before removing the outer cover If it is in a classified area either remove the transmitter or declassify the area Note Any latched relay will be released upon one push of the external button 10 Table 9 Dip Switches Dip Switch Function Block 1 Calibration and Measuring Ranges 1 OPT B Not used 2 OPTA Not used Calibration wait period 3 CAL TIME Open 0 5 min Closed 6 min 4 RANGE LO Set measuring range 5 RANGE HI Set measuring range Block 2 Gas Alarm Relay Settings 1 HIL Open Non latching relay High alarm Closed Latching relay 2 LOW L Open Non latching relay Low alarm Closed Latching relay 3 OPT C Not used 4 HIE Open De energized relay High alarm Closed Energized relay 5 LOW E Open De energized relay Low alarm Closed Energized relay
4. GasPoint Gas Transmitter Installation and Operating Instructions INNOVATORS IN GAS DETECTION Technologies Limited Warranty amp Limitation of Liability BW Technologies LP BW warrants this product to be free from defects in material and workmanship under normal use and service for a period of two years beginning on the date of shipment to the buyer This warranty extends only to the sale of new and unused products to the original buyer BW s warranty obligation is limited at BW s option to refund of the purchase price repair or replacement of a defective product that is returned to a BW authorized service center within the warranty period In no event shall BW s liability hereunder exceed the purchase price actually paid by the buyer for the Product This warranty does not include a fuses disposable batteries or the routine replacement of parts due to the normal wear and tear of the product arising from use b any product which in BW s opinion has been misused altered neglected or damaged by accident or abnormal conditions of operation handling or use c any damage or defects attributable to repair of the product by any person other than an authorized dealer or the installation of unapproved parts on the product or The obligations set forth in this warranty are conditional on a proper storage installation calibration use maintenance and compliance with the product manual instructions and any other applica
5. to zero the sensor Restart the calibration sequence e _ Oxygen sensor Gas is not required Auto zero sequence takes 30 to 60 seconds e Numeric display reads 00 Auto Zero Auto Zero Fail e Auto zero icon Ir fl ee flashes m r WII HS AutoZero LEI AutoZero AUTO SPAN e Numeric display 3 Insert calibration cap Refer to Figure 7 and shows calibration Auto Span Auto Span apply gas to the sensor for approximately 2 gas value expected Error minutes 5 minutes for ammonia Refer to Table 16 for gas concentrations and flowrates 4 When the countdown from 300 to 00 begins span is complete Disconnect the gas cylinder e f Span fails check the calibration gas cylinder used and the concentration expected Replace the cylinder and or change the calibration gas expected if required Recalibrate e Oxygen sensor Use pure air calibration gas 20 9 O2 in case of deficient or enriched atmosphere e flashes e Span icon displays We e Gas type is HS constantly displayed Span Error e After a successful calibration the transmitter LC automatically returns HS to normal operation Span and displays the current reading ppm or present CALIBRATION FAIL OR ERROR Auto zero Fail If the Fail icon displays the LCD displays a countdown from 300 to 00 before the transmitter begins normal operation Auto Span Error If the Error icon displa
6. 450 Propanol 230 Ethane 450 Propylene 310 Ethanol 330 o Xylene 100 Ethylene 80 m Xylene 100 n Heptane 325 p Xylene 100 MEK 365 Methanol 80 IPA 410 Toulene 25 Ethyl chloride 120 Mythyl chloride 100 The relative sensitivity is just an estimate This table is intended for guidance only Always calibrate using the gas or vapor under investigation Catalytic Bead Combustible Sensor The table shows the variation of the catalytic combustible sensor on exposure to a range of gases and vapors at the same LEL concentration The figures are expressed relative to the methane signal 100 The results are intended for guidance only For amore accurate measurement calibrate using the gas or vapor under investigation Special Note on the Combustible Sensor Certain substances have a detrimental effect on all catalytic bead sensors The GP WD combustible sensor has a higher degree of poison resistance and will outperform other catalytic bead sensors in poisonous atmospheres However catalytic sensors should not be exposed for prolonged periods of time to lead or sulfur containing compounds silicones or phosphates Damage is cumulative and may result in an irreversible decrease in sensitivity Certain other compounds such as halogenated hydrocarbons and hydrogen sulfide may temporarily inhibit the sensor performance but in most cases it will recover after a period in clean air Infrared IR Combustible Sensor The standard model IR
7. 774 4 002 1 219 3 049 929 1 0 18 16 953 5 167 9 247 2 818 6 357 1 937 4 843 1 476 1 5 16 26 948 8 213 14 699 8 213 10 105 3 080 7 699 2 346 I Current Factor 0 06 0 110 0 160 0 210 For other operating parameters use the formula below to establish the transmission range Formula Maximum distance Vp V1 I Rc 2xR1 Vp power supply voltage minimum Vr transmitter supply voltage minimum 12 volt current through conductor See Table 5 and 6 for factors Rc total controller resistance R line resistance per 350 m 1 160 ft where GasPoint User Manual 4 20 mA Loop Installation Cable Routing Separate cables are required for each transmitter In classified areas the cable should be in conduit or it should be an approved hazardous location cable Power Supply Ensure power supply meets the minimum requirements of all components of your system i e alarms relays etc BW recommends that the power supply be regulated Caution Polarity must be observed If the Return and 24 volt wires are reversed the transmitter will not work Do not apply electrical power to the transmitter until all connections are made the sensor is in place and the transmitter is complete 1 Remove the transmitter cover open the inner hinged control door and remove if desired 2 Attach the conduit if applicable and pull cable s into the enclosure 3 Connect the 3 pin power terminal block Return R 4 20 m
8. Canada T2A 7X9 USA 76013 United Kingdom OX16 2RT Table of Contents Title Page Safety Information Read First Contacting BW Technologies Manufacturer s Notes and Warnings Dr Introduction 0 ers rei donne deteste tui Installations rs Re en De Ee eek ee bene Sensor Location Mounting the Enclosure er System Design Specifications 204240n440nnnnnnnnnnnnennnnennnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnn nn G ble Installation era nennen 4 20 mA Loop Installation Relay Cable Installation Connecting the Controller and Power Supply Remote Sensor Separation Kit Mounting the Sensor Separation Kit Enclosure fn Factory Setlings enu rn a e a e a Willen cuties ates A ne Dip Switch Overview ana sn a aaraa ree Changing the Alarm and Calibration Gas Setpoints Dip Switch Settings Connecting the Controller and Power Supply ss Controller Calibration een inne Changing the Alarm Setpoints ccceeeeeeeeeees Changing the Calibration Gas Concentration Level Changing the Low Alarm Setpoint Changing the High Alarm Setpoint 0 01 1 1 0 Gas Alarm Conditions and Advice Fault Alarm Conditions and Advice c ccccececcecseeeeeeeeeneeeeeeeeneeseeeeceeeseeeseaeeseaeeeeeeseneeteatens Calibration 2 eek Hate Guidelines Remote Calibration ss rk in Arg Aout Peer rA aa EEA AEA ta Sa ARa Ea EN Edese Calibration Proc dure kenne hie
9. Maintenance Cleaning a Sensor Clearing a Sensor Troubleshooting Servicing the GasPoint Sensor Assembly Replacement sis Other Component Replacement sise Specifications Sensor Specifications Relative Sensitivity of Combustible Gases Vapors 2204s20nnnsnnnnennnnnnnnnnnnnennnennnen nn SPEeeitications rem 5s oo ae co re Tea Konten te cetat ks arase se ce eub ees en A Sedan a teren tere Replacement Parts and Accessories iii Gas Point User Manual ii List of Tables Table Title 1 Ratings and Certification seen 2 GasP int Monitor Heer ee en een 3 Control Bay 4 Liquid Crystal Display 5 Transmitter with Catalytic IR Combustible Sensor 6 Transmitter with Toxic Oxygen Sensor 7 Distances for Sensor Separation Kit ae 8 Factory Default Settings Select Measuring Ranges 9 Dip SWitche s 2 262 rennen Rani la eat 10 Alarms 11 Fault Conditions 12 Calibration Diagnostics Protection 13 Troubleshooting Tips 2Std Ra en E nes eens 14 Sensor Wiring Configuration 15 GasPoint Replacement Parts 16 Operating and Calibration Specifications 17 Catalytic Sensor Relative Sensitivity of Common Combustible Gases Vapors 21 18 Standard Model IR
10. SS RZ02 SS RD02 SS RX02 Replacement Part Numbers Sensors For maximum accuracy calibrate with a mixture in the range most measurements are made For most purposes a2 minute exposure is satisfactory NH3 Cl CIO2 and HCI need a 5 minute exposure Relative Sensitivity of Combustible Gases Vapors GasPoint Specifications Recommend For the most accurate measurements calibrate using the gas or vapor under investigation Where this is not possible see the applicable catalytic or infrared relative sensitivity table for combustible gases vapors The transmitter catalytic and combustible sensors are calibrated to methane with 50 methane calibration gas at the factory prior to shipping Table 17 Catalytic Sensor Relative Sensitivity of Common Combustible Gases Vapors Gas Vapor Relative Gas Vapor Relative Sensitivity Sensitivity Methane 100 Carbon 105 monoxide Propane 60 Hydrogen 100 n Butane 60 Ammonia 125 n Pentane 50 Cyclohexane 50 n Hexane 40 Ethylene 85 Acetylene 80 Each sensitivity has been rounded to the nearest 5 Table 18 Standard Model IR GasPoint Relative Sensitivity to Applicable Combustible Gases Vapors Gas Vapor Relative Gas Vapor Relative Sensitivity Sensitivity Acetone 60 n Hexane 325 n Butane 450 Methane 100 iso Butane 450 n Pentane 390 Butane 1 450 iso Pentane 390 cis Butane 2 450 Propane 410 trans Butane 2
11. Setpoints and Calibration Gas Setpoints in the user manual 2 For oxygen use pure air calibration gas Note Performance data is based on conditions at 20 C 50 RH 1013 mBar Do not adjust the oxygen sensor span value
12. periodic calibration check is needed to assure dependable performance The backlight automatically activates in low light conditions and in an alarm condition The LCD is an intuitive user interface indicating the following When a toxic or combustible sensor has failed its self test Gas type monitored and concentration level LEL or ppm Alarm level field settable and the type encountered low high or fault When to apply gas during calibration and When a toxic or combustible sensor has failed its self test The flexibility of the transmitter s modular design affords efficient installation Wiring of the transmitter itself is straightforward Field interchangeable plug in sensor assemblies enable the user to change the gas monitored at any time The transmitter recognizes the sensor installed and tests and resets itself to that sensor type The poison resistant sensors have the fastest response times available The transmitter is capable of responding to a momentary puff of gas that would otherwise remain undetected The sensors have a proven history of reliable long term performance and are relatively unaffected by temperature or humidity variations Gas enters the transmitter s sensor by convection and diffusion through a sintered stainless steel or wire mesh screened opening The transmitter s explosion proof design allows operation in areas where the combustible gas concentration may exceed the lower explosive l
13. the atmosphere may be deficient or enriched use pure air calibration gas Table 8 Factory Default Settings Select Measuring Ranges Select Measuring Range ale nos Alarm Setpoints Calibration Gas Gas Sensed Le of Factory Default Or Select Or Select Or Select Factory Default Factory Default easure 4 Open 4 Closed 4 Open 4 Closed Field Settable Value Level 5 Open 5 Open 5 Closed 5 Closed Expected 1 2 3 4 LOW HIGH Hydrogen sulfide HS ppm 0 to 100 0 to 50 0 to 500 0 to 20 10 ppm 15 ppm 20 ppm Carbon monoxide CO ppm 0 to 500 0 to 1000 0 to 100 0 to 50 35 ppm 200 ppm 200 ppm Combustibles 0 100 LEL LEL 0 to 100 N A N A N A 10 20 50 LEL Catalytic or IR Oxygen O2 by vol 0 to 30 0 N A N A N A 19 5 18 5 20 9 ambient pure air Sulfur dioxide SO ppm 0 to 100 0 to 50 0 to 20 0 to 10 2 ppm 5 ppm 20 ppm Hydrogen cyanide HCN ppm 0 to 20 0 N A N A N A 4 7 ppm 10 ppm 17 ppm Chlorine Cl ppm 0 to 5 0 0 to 10 0 0 to 50 0 0 to 99 9 0 5 ppm 1 0 ppm 3 0 ppm Chlorine dioxide CIO ppm 0 to 1 00 0 to 5 00 N A N A 0 20 ppm 0 30 ppm 0 56 ppm Hydrogen H2 ppm 0 to 100 0 to 200 0 to 800 N A 30 ppm 50 ppm 100 ppm Hydrogen chloride HCI ppm 0 to 10 0 0 to 20 0 0 to 99 9 N A 0 2 ppm 0 5 ppm 6 6 ppm Ammonia NH ppm 0 to 50 0 to 100 0 to 500 0 to 999 25 ppm 50 ppm 50 ppm Nitrogen dioxide NO2 ppm 0 to 50 0 0 to 10 0 0 to 20 0 to 99 9 2 ppm 5 ppm 10 ppm
14. 00000000 Vx Voltage Tx Transmit Rx Return GASPOINT REMOTE SENSOR Gnd Ground APPROVED NATIONAL ELECTRICAL CODE INSTALLATION CONDUIT or APPROVED HAZARDOUS LOCATION CABLE connecting the Remote Sensor and Transmitter must have Sealing Fittings at both ends within 18 450mm of each unit HAZARDOUS LOCATION CABLE and SEALING FITTINGS must be approved for Class 1 Div 1 Gr B C D Hazardous Locations Figure 6 Sensor separation Kit Wiring Diagram Mounting the Sensor Separation Kit Enclosure 1 The separation kit is equipped with predrilled flanges I D 3065 7 68 mm on 4 35 in 10 6 mm centers 2 Disconnect the wires from the transmitter terminal block and remove the sensor from the transmitter Screw the sensor fully into the separation kit housing and install the wires as shown on the diagram to the adjacent terminal block in the separation kit 3 Install cable as shown Ensure correct cabling and sealing fitting practices are implemented GasPoint Installation Factory Settings The transmitter is calibrated and tested before shipping Commonly used values are set at the factory To change the factory default settings refer to Changing the Alarm Setpoints The following settings are field selectable Dip Switch Overview 1 Calibration Time Delay To set span select a time delay of 30 seconds or 6 minutes For remote calibration use the 6 minute setting to allow time for the gas to reach the sensor T
15. A output Calibration Mode Steady 3 mA automatic reset to normal operation Fault Mode 2 mA signal and less Toxic Versions 40 mA at 24 Vdc Catalytic Combustible Version 100 mA at 24 Vdc Infrared Combustible Version 75 mA at 24 Vdc Relays 50 mA per relay at 24 Vdc Plug in logic sensors Automatic self test of sensor integrity upon power on Non intrusive via pushbutton Auto Zero and Auto Span Two backlit liquid crystal displays LCD 3 digit continuous readout of the gas present ppm or LEL Alphanumeric diagnostic status display Two 2 setpoints User selectable Three field retro fittable SPDT relays 5 amps 250 Vac Field selectable for normally energized de energized and latching non latching Normally energized and non latching Non intrusive via external pushbutton Simple up down pushbuttons with LCD readout of setpoints 6 8 x 7 x 4 3 in 17 x 17 8 x 10 8 cm including sensor 4 85 Ib 2 2 kg approximately Explosion proof anodized aluminum enclosure c w mounting flanges Stainless steel enclosure 3 4 inch n p t 2 years non prorated 2 years warranty This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules and ICES 003 Canadian EMI requirements These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can rad
16. A signal to the labeled terminal Supply V positive 12 32 volts to the labeled terminal Ground G Ground wire to the labeled terminal Note If using shielded cable To avoid radio frequency interference RFI the shield including Mylar must be grounded Simply tying a bare drain wire to ground does not ground a shield Keeping the shield as short as possible tie the shield to the internal grounding screw Tie any unused wires to ground Relay Cable Installation The transmitter is equipped with three relays low gas alarm high gas alarm and fault alarm Select to connect the applicable relays required in each situation Relay connections are labeled NO normally open C common and NC normally closed Attach wires as required to the applicable terminals Note The fault relay connections are reversed Set the alarm dip switches before applying power Once power is applied if desired change the alarm setpoints Connecting the Controller and Power Supply Ensure the transmitter s external cover is in place before applying power Follow the procedures and recommendations in the control systems manual to complete the installation 1 Ensure the transmitter is tied to the controller ground to the earth ground and to the negative terminal of the power supply 2 Attach wires to the controller and power supply as shown in the wiring diagram Refer to Figure 5 Remote Sensor Separation Kit The transmitter sensor separatio
17. Combustible GasPoint is calibrated to methane The table shows the variation of the IR combustible sensor on exposure to applicable group combustible hydrocarbon gases and vapors atthe same LEL concentration The figures are expressed relative to the methane signal 100 The results are intended for guidance only For a more accurate measurement calibrate using the gas or vapor under investigation A Caution IR systems should always be calibrated as soon as you install the system to compensate for any change in pressure Note If the hydrocarbon desired is not listed special models are available for other groups of hydrocarbons For IR sensors use the specified gas to calibrate the system IR sensors work very well in low or no oxygen conditions IR sensors monitors the molar concentration of the specific gases by a physical method No chemical reaction takes places inside the sensor 21 GasPoint User Manual Specifications Monitor Power Input Output Current Current Consumption Sensors Self Test Calibration Displays LCD 1 LCD 2 Alarm Setpoints Relay Contacts Low High Fault Controls Calibration Alarm Setpoints Physical Size w xIx h Weight Enclosure Sensor Wiring Port Warranty Instrument Sensor FCC Statement Approval 22 3 wire 4 20 mA gas transmitter with advanced micro controller based circuitry 12 to 32 volts dc Normal Operation Isolated linear 4 20 m
18. GasPoint Relative Sensitivity to Applicable Combustible Gases Vapors ss 21 List of Figures Figure Title Page 1 GasPoint Monitor 2 User Interface 3 Liquid Crystal Display ae 4 Outline Drawing a na le on De HET EDER de 1 5 System Wiring Diagramme ker ee 6 Sensor separation Kit Wiring Diagram 7 Applying Gas to the Sensor 8 Assembly Drawing isir RARE Asp rate AAV A ARR MUR Ra aras RARES Ant 9 sensor Wiring Diagram nenne pen een ana blne iii Gas Point User Manual Safety Information Read First IMPORTANT Users of the GasPoint the transmitter require a full understanding of the operating and maintenance instructions Use the transmitter only as specified in this manual otherwise the protection provided by the transmitter may be impaired Read the following Warnings and Cautions before using the transmitter Warnings Do not paint the sensor assembly or the transmitter Calibrate the transmitter at start up and BW recommends a calibration check on a regular schedule once at least every 90 days More frequent checks or inspections are encouraged to spot problems such as mud collections on the sensor head accidental painting over the sensor head etc gt Do not use the transmitter if it is damaged Before you use the monitor inspect the case Look for cracks or missing metals or plastics If the transmitter is damaged or something is missing contact BW T
19. SSCAL4 Stainless steel remote GP AD Transmitter c w ammonia sensor 1 calibration cup and splash GP DD Transmitter c w nitrogen dioxide 1 guard sensor GPOINT B GasPoint pushbutton protective 1 GP CD Transmitter c w chlorine sensor 1 boot ENT mu c w chlorine dioxide 1 GP FP MPCB1 PCB main control board with 1 LCD d int If lat GP YD Transmitter c w hydrogen sensor 1 en u er a 7 GP LD Transmitter c w hydrogen chloride 1 GP MPCB1 PCB main control board with sensor LCD Add Suffix SS for optional stainless steel transmitter enclosure GP PPCB1 PCB power board with relays Contact BW Technologies for sensor availability 7 Cl ClO2 and HCI sensors are only certified for ordinary locations GP HART Hart communication expansion Sensor Assembly enclosures are stainless steel standard module 2 wire system GP 2210 Internal faceplate with hinge 1 Accessories and Spares and label Model No Description Qty M1147 Enclosure with glass window 1 D2DT Duck mounting kit 1 GP POWER1 Power supply 110 220 Vac 24 GP DUC K1 Duct mount adapter 1 Vde 1 GP 1 Gas transmitter only c w LCDs 1 GP SSPB Stainless steel process baffle and relays no sensor GP SSPB 2 Stainless steel process baffle 1 GP SEP Sensor separation kit 1 with NPT fitting 7 GP MBUS3 MODBUS communication 1 D1374 User manual expansion module GP MBUS4 MODBUS communication 1 expansion module IR RWO3 IR combustible sensor 1 assembly SS RA02 Ammonia sensor assembly 1 SS RC02 Chlo
20. ST BE OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY READ AND UNDERSTAND INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING OR SERVICING Contacting BW Technologies To contact BW Technologies call Address correspondence to USA 1 888 749 8878 BW Technologies LP Canada 1 800 663 4164 2840 2 Avenue S E Europe 44 0 1295 700300 Calgary AB T2A 7X9 Other countries 1 403 248 9226 CANADA ISO 9001 Email us at info bwtnet com Visit BW Technologies website at www gasmonitors com Manufacturer s Notes and Warnings 1 Read the Safety Warnings and Cautions at the beginning of this manual 2 The GasPoint is fully tested and calibrated in the factory Installation of the GasPoint should be done by qualified personnel GasPoint Introduction The GasPoint the transmitter provides continuous monitoring of the atmosphere for hazardous gases in the workplace and is virtually maintenance free Its revolutionary design utilizes advanced microcontrollers and allows for enhanced diagnostics and fault analysis Advanced design features make installation and operation simpler than ever saving you time and money The transmitter provides a 4 20 mA output signal which can be connected to any control system DCS PLC etc Designed with non volatile memory the transmitter has total memory retention The pushbutton non intrusive calibration can be easily performed by one person with no tools or magnet keys Normally only a
21. ackground interfering gas is present Combustible and Toxic sensors wait for the transmitter to If interfering gas is present during auto zero the transmitter return to normal operation Then apply pure air zero gas and refuses to auto zero and exits the calibration routine repeat calibration Calibration gas cylinder runs empty during calibration Wait for unit to return to normal operation Replace the empty gas cylinder with a full cylinder and repeat calibration Calibration gas concentration is too low or too high Change the value to equal the calibration gas concentration Calibration gas concentration is not within expected being applied parameters either the concentration of applied gas ppm or is too high or too low The transmitter refuses to set span if the calibration gas is not within the expected parameters and exits the calibration routine Gas applied at the wrong time Restart the calibration routine and apply gas only when the gas Gas is applied before requested to do so or if gas is applied cylinder icon flashes during auto zero the transmitter refuses to proceed and exits the calibration routine The prior former auto zero value will be retained Remote Calibration The length of time depends on the length of hose the calibration gas must travel If the wait period is longer than 30 seconds the CAL TIME dip switch must be set to 6 minutes To save gas and time the transmitter begins to span when
22. ailError Figure 2 User Interface Table 3 Control Bay Item Description 1 Edit buttons 2 OK button 3 Faceplate security screw 4 Low light sensor 5 High Low alarm settings 6 Slip Hinge Table 4 Liquid Crystal Display Item Description Numeric reading Units of measure ppm or Alarm level type Increment decrement prompt arrows Set value arrow prompts Sensor advice Span advise icon Automatic zero advise icon II A OJN Apply gas advise icon GasPoint Installation Installation Sensor Location Several factors should be considered when selecting locations to install sensors The following general suggestions should be considered to assure the detection of the target gas Select the most suitable location for each sensor Air Currents If there are fans wind or other sources of air movement gases may tend to rise or collect in certain areas of a facility The local air currents should be assessed to aid in selecting the sensor location Outdoor situation considerations such as prevailing winds should also be accounted for Air convection can often be more important in determining gas concentrated areas than factors of vapor density Vapor Density When there are no air currents in the area sensor placement may be affected where the gas vapor to be monitored is lighter or heavier than air For gases lighter than air BW suggests pla
23. ble recommendations of BW b the buyer promptly notifying BW of any defect and if required promptly making the product available for correction No goods shall be returned to BW until receipt by the buyer of shipping instructions from BW and c the right of BW to require that the buyer provide proof of purchase such as the original invoice bill of sale or packing slip to establish that the product is within the warranty period THE BUYER AGREES THAT THIS WARRANTY IS THE BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE BW SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT TORT OR RELIANCE OR ANY OTHER THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this warranty is held invalid or unenforceable by a court of competent jurisdiction such holding will not affect the validity or enforceability of any other provision BW Technologies LP BW America BW Europe 2840 2nd Ave SE 3279 West Pioneer Parkway 5 Canada Close Calgary AB Arlington TX Banbury Oxfordshire
24. cing the sensor approximately 12 in 30 cm above the level of a potential gas release or close to the ceiling or roof in indoor installation For gases heavier than air BW suggests placing the sensor 12 in 30 cm below the release site or near the floor or ground Gases with a density equal to air or slightly greater than air tend to rise particularly when air currents are present Gas Emission Sources As a rule at least one sensor should be located in close proximity to each point where a leak is likely to occur This is particularly important when a liquid with a low volatility is being monitored Environmental Factors Designed for rugged outdoor use consider the following in selecting a location Install sensors where they are protected from wind dust snow water vibration and or shock e Observe the operating temperature range of the sensor Refer to Sensor Specifications GasPoint User Manual Mounting the Enclosure Modular design simplifies the installation of the transmitter The transmitter s main board is mounted to the inner control door which is equipped with slip hinges The transmitter s back enclosure contains the relays and power board and is equipped with a threaded 3 4 inch NPT conduit fitting outlet and pre drilled mounting flanges Power and signal lines connect to the plug in terminal block on the power board The transmitter may be disassembled simplifying the installation Caution Qualified perso
25. crew is aligned and tighten it down Replace the outside glass cover Reapply power and reinitialize the transmitter s power up procedure refer to Connecting the Controller and Power Supply Change the alarm setpoints if desired Important Calibrate the transmitter whenever a component is replaced Sensor Assembly Replacement To replace the entire sensor assembly complete the following steps Warning Opening the sensor will invalidate the calibration 1 Power down the transmitter 2 Disconnect the wires from the 4 pin plug in terminal block at J5 on the power board and remove the old sensor 3 Feed the new wires through the opening Fully screw in the new sensor Attach the wires to the plug in terminal block Ensure that all colored wires are correctly matched to the board labels from left to right Refer to Figure 6 A Caution Check that all connections are correct Incorrect wiring may damage the sensor and or the power board 4 Refer to Table 8 to select a measuring range if required Left Side Refer to Replacement Parts and Accessories for part D Red Pwr 8 VDC numbers Table 14 Sensor Wiring Configuration pata ps Board Label Wire Color Description Black GND 1 Pwr 8 Vdc Red Power 8 Vdc left 2 TX Grey Transmission Figure 9 Sensor Wiring Diagram 3 RX White Signal 4 GND Black Ground right Table 15 GasPoint Repl t Part Other Component Replacement gt ee
26. echnologies immediately Make sure the cover is properly fastened before you operate the transmitter Use only a sensor assembly specifically designed for your GasPoint model Refer to Replacement Parts and Accessories gt Periodically test the sensor s response to gas by exposing the monitor to a targeted gas concentration that exceeds the high alarm setpoint Manually verify that visual alarms are activated gt Opening the sensor will invalidate the calibration gt gt Uy A Cautions Do not expose the monitor to electrical shock and or severe continuous mechanical shock Do not attempt to disassemble adjust or service the monitor unless instructions for that procedure are contained in the manual and or that part is listed as a replacement part Do not allow liquids to condense and or use high power sprays on the instrument gt The warranty will be voided if customer personnel or third parties damage the monitor during repair attempts Non BW Technologies repair service attempts void this warranty IMPORTANT The GasPoint is only to be used for the purposes specified in this manual BW Technologies authorized service representatives and parts must be employed in carrying out repairs to the unit in order to maintain the validity of the warranty Modification of components use of non BW parts or use of incomplete or used parts will also invalidate the warranty CAUTION FOR SAFETY REASONS THIS EQUIPMENT MU
27. g Transmission distances see tables below Transmission Range The distance the 4 20 mA signal can travel is dependent on several factors including the cable gauge Maximum cable resistance is 650 ohms less the controller resistance The tables below assume a constant 24 volt power supply at 20 C copper wire and a controller resistance of 250 ohms The signal range from the controller to the transmitter takes into account the return loop Note The BW CR 4000 Controller has a resistance of only 120 ohms Table 5 Transmitter with Catalytic IR Combustible Sensor Maximum cable lengths between the controller and transmitter Conductor Size Relays Not Used One Relay Connected Two Relays Connected Three Relays Connected Sq mm AWG feet meters feet meters feet meters feet meters 0 64 22 3 356 1 022 2 368 722 1 830 557 1 491 454 0 75 20 5 336 1 626 3 767 1 148 2 910 887 2 371 722 1 0 18 8 476 2 583 5 983 1 823 4 623 1 409 3 767 1 148 1 5 16 13 474 4 106 9 511 4 106 7 749 2 240 5 988 1 825 I Current Factor 0 12 0 17 0 23 0 28 Table 6 Transmitter with Toxic Oxygen Sensor Maximum cable lengths between the controller and transmitter Conductor Size Relays Not Used One Relay Connected Two Relays Connected Three Relays Connected Sq mm AWG feet meters feet meters feet meters feet meters 0 64 22 6 712 2 045 3 661 1 115 2 517 767 1 917 584 0 75 20 10 953 3 253 5 821 1
28. g alarm advice activates in any gas alarm condition low or high e The backlight activates e The 4 20 mA loop output is normal from 4 to 20 mA according to calibrated values When the alarm condition no longer exists the transmitter exits alarm mode and enters normal operation Note If a relay is set to the latching position on either low or high gas alarm the relay remains on until the alarm is reset acknowledged Press the external button to reset the relay If the alarms are disabled then no alarm icons will be displayed An oxygen alarm level depends on which alarm setpoints have been set to low and high The oxygen low and or high gas alarm setpoints are user selectable for either enrichment and or deficiency alarms as desired A Caution High off scale readings may indicate an explosive concentration Table 10 Alarms Alarm condition LOW GAS ALARM The current gas concentration present meets or exceeds the low alarm the low alarm setpoint Alarm relay Low alarm relay triggers field interface if the relay is connected and a low alarm setpoint is entered Alarm Numeric display will show the gas currently presnet ppm LOW icon displays ALARM icon flashes HIGH GAS ALARM Ifthe current gas concentration present meets or exceeds the high alarm setpoint High alarm relay triggers a field interface if the relay is connected and a high alarm setpoint is entered Numeric display will show t
29. he gas currently present ppm HIGH icon displays ALARM icon flashes OVER RANGE over level or over range GAS CONDITION If the gas concentration meets or exceeds the full measuring range OL icon displays HIGH icon displays GasPoint Operation Fault Alarm Conditions and Advice In the event of a fault condition the fault alarm triggers activating any connected field interface The transmitter advises which fault condition has occurred Under the fault alarm conditions e The non latching fault relay is activated de energized during a fault condition The backlight activates When the problem is corrected the transmitter automatically returns to normal operation Table 11 Fault Conditions Fault Condition pre LCD Icons Displayed Display Sensor Self Test Fail 2 00 mA e Three 3 bars flash on the numeric display e FAULT icon displays At start up the self test has e ALARM icon flashes m m failed e Sensor Fail icon displays FAULT ALARM C LEL Sensor Fail Sensor Fault 2 00 mA e Numeric display will read the last value ppm present before sensor fault occurs rm FAULT icon displays ALARM flashes m Sensor Fail displays ppm FAULT ALARM H5 2 al Sensor Fail Sensor Drift 2 00 mA e Numeric display reads 00 e FAULT icon displays ALARM icon flashes u e Sensor Error icon displays and flashes I LL FAULT ALARM LEI LL Sensor E
30. hen the high alarm setpoint Relays e Fault The fault relay is always energized under normal operations The relay will de energize only if the transmitter is addressing a fault condition or when power is released e Low High Gas Alarms The gas alarm relays connected are energized or de energized latching or non latching according to the transmitter dip switch settings you have selected e Reset Latched Relay Alarm Alarm Acknowledge If a gas alarm relay has been set to latching mode acknowledge the alarm condition Press the external pushbutton for one second until the display reads low alarm setpoint then release the external button The transmitter releases the latched alarm s and displays the current low and high alarm setpoints Note If an alarm condition exists the transmitter will not allow the user to reset a latched alarm or display the alarm setpoints Output The 4 20 mA loop output is normal from 4 to 20 mA according to calibrated values except in a fault condition Backlight The backlight activates in low light conditions When ambient light conditions return to normal the backlight automatically deactivates 13 GasPoint User Manual Gas Alarm Conditions and Advice Ifthe current gas concentration meets or exceeds either alarm setpoint the transmitter gas alarm functions will activate Note If both or either gas alarm is set to zero then no gas alarm condition exists for that alarm level The followin
31. iate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Approved by CSA to both U S and Canadian standards Class I Group B C D Approved by CSA to both U S and Canadian standards Class Il Group E F G for toxic gas transmitter only Approved to Combustible Performance Standards ISA S12 13 and C22 2 No 152 GasPoint Specifications Replacement Parts and Accessories Modal Ne DRSENPNON aty Transmitters c w Sensor Assemblies and Relays SS RW02 Combustible sensor assembly 1 Model No Description Qty SS RX02 Oxygen sensor assembly 1 GP WD Transmitter c w combustible sensor 1 SS RZ02 Hydrogen cyanide sensor GP IR WD Transmitter c w IR combustible sensor 1 assembly 1 GP HD ue c w hydrogen sulfide 1 E0036 Calibration plug 1 GP MD Transmitter c w carbon monoxide 1 GP CAL 3 Non conductive remote 1 sensor calibration cup and splash GP SD Transmitter c w sulfur dioxide sensor 1 guard GP ZD Transmitter c w hydrogen cyanide 1 GP SSPLASH4 Stainless Steel splash guard 1 sensor 1 GP XD Transmitter c w oxygen sensor 1 GP
32. imit LEL Its rugged construction ensures a long life span in almost any environment The transmitter incorporates the best of both proven and new technologies that offer versatility in addition to reliable safety mechanisms Table 1 Ratings and Certification All gases except Cl CIO and HCI Approved by CSA Canadian Standards Association for use in both the USA and Canada Class I Div 1 Groups B C D Class Il Groups E F G Toxic only SP Combustible Performance Standards ANSI ISA ISA S12 13 E CSA C22 2 No 152 GasPoint Cl CIO and HCI Approved by CSA Canadian Standards Association for use in both the USA and Canada for ordinary locations Approved Non Incendive for installations in Class Division 2 Groups B C D Location s when both input power and relay outputs are connected to non incendive sources not to exceed 32 Vdc power input and 24 Vdc relay output CSA C22 2 No 213 UL 1604 GasPoint User Manual A Warning Opening the sensor will invalidate the calibration Figure 1 GasPoint Monitor Table 2 GasPoint Monitor Item Description 1 Cable conduit access 2 Explosion proof enclosure 3 Sensor 4 Calibration pushbutton FAULTHIGHLOW o AWGiMs 1 m7 Set N NI N Replace I Expired 8 AutoZeroTest Sensor Span FailError Figure 3 Liquid Crystal Display ia f Set Replac 2 Expired a AutoZeroTest Sensor
33. it senses calibration gas Apply the calibration gas for approximately 2 minutes plus the time estimated for the gas to reach the sensor Figure 7 Applying Gas to the Sensor 16 Calibration Procedure GasPoint Calibration The transmitter provides continuous monitoring for the target gas In the event of power failure the transmitter automatically resets itself back into the system loop after power is restored The transmitter has non volatile memory and will not be affected by a power disruption All programmed information is protected with total memory retention For calibration gas concentrations and flowrates for each gas refer to Table 16 Calibration steps START CALIBRATION 1 Press and hold the external button down while the LCD displays the high and low alarm setpoints Continue to hold the button until the LCD displays CAL and the CAL icon lights for 3 seconds Then release the button Note The 4 20 mA output will be 3mA throughout calibration Calibrating the transmitter will not cause false alarms at the controller LCD icons displayed Display e First the low and high alarm setpoints are ri displayed 8 seconds j us approximately e Next the CAL icon displays for 3 seconds e Backlight is activated L E L AUTO ZERO 2 The transmitter then takes a zero level reading e Combustible and Toxic sensors If target gas is present apply zero gas pure air or 100 nitrogen
34. n kit can be mounted at the following distances dependent of the cable size Table 7 Distances for Sensor Separation Kit Conductor Size wes ta Combustible Toxic O Sensor ensor Sqmm AWG feet meters feet meters 0 64 22 619 188 5 1 548 472 0 75 20 985 300 2 463 750 1 0 18 1 564 476 3 912 1 174 1 5 16 2 487 758 6 218 1 895 GasPoint Installation RETURN GROUNDING SCREW 0 GROUND CONTROLLER I 2 NEG c Ng RET GND 12 32 VDC POWER TERMINAL BLOCK VVA POS n Y WOUND NC C NONO Nono POWER SUPPLY 12 32 VDC LOW ALARM RELAY 1 4 PIN SENSOR CT NO gt LEGEND CONNECTOR HIGH ALARM l NC Normally closed RELAY 2 C Common NO Normally open v 12 32 Vdc G Gnd Ground R Return 00 O O0 Vx Voltage FAULT ALARM 2 alu RELAY 3 x Return Figure 5 System Wiring Diagram Modbus Expansion Module Note For wiring of GasPoints equipped with the Modbus Communication Expansion Module see the Modbus manual for additional wiring information GasPoint User Manual GASPOINT TRANSMITTER RED GREY WHITE BLACK C7 LI LI Vx Tx Rx Gnd 4 PIN SENSOR POWER SUPPLY CONNECTOR 12 32 VDC gt E5 at E TEF Approved Sealing Fittings da installed within popp ee 18 450mm of the wot 3 GasPoint Transmitter 4 PIN SENSOR CONNECTOR x 4 PIN SENSOR SEALING FITTING CONNECTOR LEGEND 0
35. ndition if that setpoint is met or exceeded Changing setpoint LCD icons displayed Display Changing the Calibration Gas Concentration Level Numeric display shows rr The LCD first displays the current calibration gas value Press OK to current calibration gas J Li value expected accept the displayed value or proceed to change the value The Set Span icon flashes factory default value for Oz is set for 20 9 and cannot be adjusted ne 1 Press A to increment the value or Y to decrement the value A Y flash N 5 2 Press OK to accept the new displayed value and end set HS calibration gas level ppm Changing the Low Alarm Setpoint Numeric display shows im The next screen displays the current low alarm setpoint Press OK to current low alarm setpoint jit accept the current low alarm setpoint or proceed to change the LOW ALARM set icon value flashes 1 Press A to increment the value or Y to decrement the value A V flash ALARME 2 Press OK to accept the new displayed value and end set low LEL alarm setpoint Changing the High Alarm Setpoint Numeric display shows r current high alarm setpoint rT The next screen displays the current high alarm setpoint Press OK HIGH ALARM set icon to accept the current high alarm setpoint or proceed to change the flashes value AV flash HIGH ALARM 1 Press A to increment the value or Y to decrement the value HS 5 2 Press OK to accept the new displayed value and end set high alarm setpoi
36. nnel should perform the installation according to applicable electrical codes regulations and safety standards Ensure correct cabling and sealing fitting practices are implemented Install the transmitter The predrilled mounting flanges I D 0 25 on 5 5 inch centers It is preferable to attach the transmitter to a wall or bracket using bolts through the two mounting holes These mountings however may be omitted if the electrical conduit is sufficiently rigid to support the weight of the transmitter Note The sensor should never be installed pointed upwards 7 50 gt 7 50 4 45 gt 0 313 Figure 4 Outline Drawing GasPoint Installation System Design Specifications Supply Voltage Power Consumption Memory Loop Resistance Cable Relays Sensor Separation Kit Cable Installation 12 to 32 volts Catalytic Combustible Sensors 100 mA 24 Vdc IR Combustible Sensors 75 mA 24 Vdc Toxic Oxygen Sensors 40 mA 24 Vdc Relays 50 mA per relay 150 mA total Non volatile memory a battery back up is not necessary to retain values in the event of power outages 650 ohms maximum 4 20 mA 3 conductor 14 to 24 AWG Relays 3 conductor 14 to 24 AWG Sensor Separation Kit 4 conductor 16 to 22 AWG 5 amp at 24 Vdc or 115 Vac SPDT low high and fault Low High Relays Field selectable for normally energized de energized latching non latching Fault Relay Energized non latchin
37. nt Note Oxygen low and or high gas alarm setpoints can be set to either enrichment and or deficiency alarms as desired Ifthe alarm setpoint is set below 20 9 deficiency alarm an alarm is triggered if the concentration present is below 20 9 If the alarm setpoint is set above 20 9 enrichment alarm an alarm is triggered if the concentration present exceeds 20 9 You can choose to set both alarms above or below 20 9 or one alarm above and one below 20 9 3 Test the transmitter using a gas cylinder other than the one used in the calibration steps The gas concentration should not exceed the sensor s detection range Confirm that the display shows the expected concentration 12 GasPoint Operation Operation The transmitter provides continuous monitoring for the target gas In the event of power failure the transmitter will automatically reset itself back into the system loop after power is restored The transmitter has non volatile memory and will not be affected by a power disruption All programmed information is protected with total memory retention wm Note BW recommends the transmitter be calibrated before first time use LCD The LCD diplays the current ppm or reading of the target gas present r m ro View Alarm Setpoints To view the alarm setpoints at any time press the external pushbutton for one second and release The LCD displays the current low alarm setpoint and t
38. o save time and calibration gas the transmitter begins the span procedure when it senses the calibration gas Note The factory default is 30 seconds See dip switch 3 CAL TIME to change to 6 minutes 2 Measuring Range Select from up to four measuring ranges by setting Block 1 switch 4 and switch 5 to open or closed Both switch 4 and 5 are factory set to open Refer to Table 8 3 Low and or High Relays Select non latching or latching Factory default is set to open non latching 4 Low and or High Relays Select de energized or energized Factory default is set to open de energized Changing the Alarm and Calibration Gas Setpoints 5 Gas Alarms Gas alarm levels are set to Occupational Safety amp Health Administration OSHA standards prior to shipping The transmitter is equipped with two alarm levels low and high To set select two one or no alarm levels and set selected levels to any value desired To change the levels refer to Changing the Alarm Setpoints The factory defaults are listed in Table 8 6 Calibration Gas Concentration Level To facilitate the auto span the calibration gas concentration expected is preset It can be changed at any time for the toxic and combustible gas sensors Set the standard generally used in your facility Refer to Changing the Calibration Gas Concentration Level to change the value The oxygen sensor span is set to 20 9 and cannot be adjusted For O2 calibrate in normal 20 9 ambient air or if
39. pushbutton after normal operation begins 5 Upon a successful self test the transmitter enters normal operation and displays the ambient gas present The backlight remains activated for 5 seconds after normal operation begins If the unit fails the self test refer to Fault Alarm Conditions and Advice Controller Calibration Follow the procedures and recommendations in the control system manual to calibrate the control system 1 Calibrate the control system see your control manuals Set the controller as follows e 4mA ZERO e 20 mA FULL SCALE 2 Calibrate the transmitter with gas and then refer to Changing the Alarm Setpoints and Calibration Gas Setpoints 11 GasPoint User Manual Changing the Alarm Setpoints The setpoint mode allows the user to change the calibration gas concentration level the low alarm setpoint and the high alarm setpoint Refer to Factory Settings for factory default settings To change the values 1 2 Screw off the enclosure top Allows access to edit buttons Press the OK button for 2 seconds to access setpoint mode and change factory default settings The transmitter is equipped with two setpoints low and high If only one setpoint is required set one level to zero to deactivate Set the other setpoint as desired To deactivate both alarm levels set both setpoints to zero If both low and high are set to the same value the transmitter will trigger a high alarm co
40. rine sensor assembly 1 SS RDO2 Nitrogen dioxide sensor 1 assembly SS RHO2 Hydrogen sulfide sensor 1 assembly SS RLO2 Hydrogen chrloride sensor 1 assembly SS RMO2 Carbon monoxide sensor 1 assembly SS RS02 Sulfur dioxide sensor assembly 1 23 GasPoint User Manual 24 GasPoint Specifications 25 GasPoint User Manual 26 D1374 5 English IERP 122635 2006 BW Technologies all rights reserved Printed in Canada All product names are trademarks of their respective companies VV Corporate Headquarters Es Calgary Alberta Technologies by Honeywell Calibration Flow Rates The following information has changed in the user manual D1374 4 Page 26 D1374 5 Page 20 Operating and Calibration Specifications 123179 GasPoint Hydrogen Carbon Sulfur Ammonia Hydrogen Nitrogen Oxygen Specifications sulfide monoxide dioxide cyanide dioxide P HS ppm CO ppm SO ppm NH ppm HCN ppm NO ppm O v v Calibration Flow rate min ml minute 250 500 250 500 250 500 500 1000 250 500 500 1000 250 500 at a or ppm reading of 20 ppm 200 ppm 20 ppm 50 ppm 15 ppm 10 ppm 20 9 2 1 It is recommended that the calibration gas concentration for toxic sensors be 50 of the selected mesuring range Factory default values are shown Auto span Values expected by the transmitter for toxic gases can be changed at any time Refer to Changing the Alarm
41. rror 15 GasPoint User Manual Calibration Guidelines When calibrating the transmitter adhere to the following guidelines e Calibration accuracy is never better than the calibration gas accuracy BW Technologies recommends a premium grade calibration gas Gases with National Institute of Standards and Technology NIST traceable accuracy improves the validity of the calibration Do not use a gas cylinder beyond its expiration date e Calibrate a new sensor before use Allow the sensor to stabilize before starting calibration approximately 5 minutes Calibrate the transmitter on a regular schedule BW recommends once every 90 days 3 months depending on use and sensor exposure to poisons and contaminants Calibrate the transmitter if the ambient gas display value varies at start up It is best to calibrate the sensor before changing the alarm setpoints Calibrate only in a clean atmosphere which is free of target gas Use teflon or stainless steel hose on all electrochemical sensors Tygon will poison a catalytic combustible sensor over time Warning Opening the sensor will invalidate the calibration Table 12 Calibration Diagnostics Protection If calibration is incomplete the transmitter automatically returns to normal operation and all prior former calibration data is retained Common cause for the transmitter to refuse calibration or for an incomplete calibration include the following B
42. tion Gas Setpoints section 2 For oxygen use pure air calibration gas Note Performance data is based on conditions at 20 C 50 RH 1013 mBar Do not adjust the oxygen sensor span value 20 Toxic and Oxygen Electrochemical Combustible Catalytic or Infrared IR Position Sensitivity None Operation Pressure Range 900 to 1100 mBar atmospheric 10 Calibration Notes IR Catalytic Hydrogen Carbon Sulfur dioxide Ammonia Hydrogen Nitrogen Oxygen Specifications Combustibles Combustibles sulfide monoxide cyanide dioxide LEL LEL HS ppm CO ppm SO ppm NH ppm HCN ppm NO ppm O viv Repeatability of signal 1 1 1 1 1 lt 10 0 5 2 0 1 5 10 to 50 Temperature Range C 40 to 50 40 to 90 40 to 50 20 to 50 20 to 50 20 to 50 20 to 50 20 to 50 F 40 to 122 40 to 194 40 to 122 4 to 122 4 to 122 He 4 to 122 4 to 122 4 to 122 Relative Humidity R 0 to 100 ia a z 4i 5 to 95 Non condensing Non Condensing Long Term Drift Zero Nominal Nominal Nominal Nominal Nominal Nominal Nominal Nominal Nominal Po of signal loss per month Span lt 1 lt 1 lt 2 lt 2 lt 2 lt 2 lt 2 lt 2 lt 1 LCD Increments 1 1 1 ppm 1 ppm 1 ppm 1 ppm 0 1 ppm 0 1 ppm 0 1 Calibration sa nn ain 250 250 150 250 500 250 1 000 250 50 LEL 50 LEL 20 200 20 50 15 10 20 9 at a or ppm reading of ppm ppm ppm ppm ppm ppm S 5 son IR RWO3 SS RWO2 SS RHO2 SS RMO2 SS RS02 SS RAO2
43. xpose a sensor to the fumes of inorganic solvents such as paint fumes or organic solvents Troubleshooting With enhanced diagnostics the transmitter provides extensive fault analysis and fault advice refer to Fault Alarm Conditions and Advice The troubleshooting chart deals with other factors and is to be used as a guide Prior to reaching any conclusion that a problem may exist check the following e All terminal blocks are fully seated on the boards e Power and signal connections are correct and complete Table 13 Troubleshooting Tips Problem Possible Cause Solution No response to gas Sensor screen dirty Clean or replace sensor Apparent false alarm Puff of gas Monitor is functioning Not properly calibrated Recalibrate Solvent fumes or interference from high Remove source levels of interfering gas Radio frequency interference Check grounds and shielding are correct No signal at controller Maximum distance reached Verify loop resistance change wire AWG or increase supply Controller does not operate Troubleshoot controller 18 GasPoint Servicing the GasPoint Servicing the GasPoint Disassembling Observe all safety and electrical codes and regulations before removing front cover Unscrew the thumbscrew and open the service bay door Assembling When reassembling the transmitter ensure that it is electrically complete Close the service bay door Ensure the thumbs
44. ys the LCD displays a countdown from 300 to 00 before the transmitter enters normal operation Note f either fail condition occurs all previous information values are retained Retry calibration Auto Zero If the target or an interfering gas is present the transmitter refuses to auto zero The Fail icon displays The Fail icon also displays if the external pushbutton is pressed during auto zero Span If the calibration gas is not within expected values the transmitter refuses to span The Error icon displays 17 GasPoint User Manual Maintenance To keep the transmitter in good operating condition perform the following basic maintenance as required Calibrate test and inspect the transmitter at regular intervals and after exposure to high concentrations Keep an operations log of all maintenance calibrations and alarm events Clean the exterior with a soft damp cloth Do not use solvents soaps or polishes Do not immerse the transmitter in liquids Cleaning a Sensor The sensors are equipped with a stainless steel sintered or a hastelloy sintered flame arrestor screen dependent on gas Clean only with a dry brush being careful not to clog the screen Replace the sensor if the screen is plugged Clearing a Sensor The sensor has a high degree of resistance to common vapors and gases The sensor most likely clears itself if you remove the transmitter to a clean environment and wait 10 to 30 minutes Do not e
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