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Internal Description

AirLink T3A Operator’s Manual

Internal Description

Figure 2: Internal Component Location

RS-485 Modbus terminal block

Sensor housing socket

Fault terminal block

Antenna fitting connector

Power input/4-20 mA output
terminal block

Relay 1 terminal block (if relays installed)

Radio module

Relay 2 terminal block (if relays installed)

Содержание T3A

Страница 1: ...RKI Instruments Inc www rkiinstruments com AirLink T3A Operator s Manual Part Number 71 0536 Revision P6 Released 9 26 22 ...

Страница 2: ...riodic calibration and maintenance of the detector is essential for proper operation and correct readings Please calibrate and maintain this detector regularly Frequency of calibration depends upon the type of use you have and the sensor types For most applications typical calibration frequencies are between 3 and 6 months but can be more often or less often based on your usage ...

Страница 3: ...tes the full extent of our liability and we are not responsible for removal or replacement costs local repair costs transportation costs or contingent expenses incurred without our prior approval THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER WARRANTIES AND REPRESENTATIONS EXPRESSED OR IMPLIED AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RKI INSTRUMENTS INC INCLUDING BUT NOT LI...

Страница 4: ...UEL D INSTRUCTIONS EN ENTIER AVANT D UTILISER D ENTERETENIR OU DE RÉPARER L ÉQUIPEMENT CAUTION THIS AREA MUST BE FREE OF FLAMMABLE GASES DURING CALIBRATION ATTENTION CETTE ZONE DOIT ETRE EXEMPTE DE GAZ INFLAMMABLES PENDANT L ETALONNAGE CAUTION TO PREVENT IGNITION OF EXPLOSIVE ATMOSPHERES remove from explosive atmosphere BEFORE SERVICING WARNING A conduit seal must be used within 18 inches of the e...

Страница 5: ...7 Wiring Power and 4 20 mA Output 18 Connecting RS 485 Modbus 20 Connecting Relays Alarms 22 Connecting the Fault Terminal 23 Closing the Enclosure 25 Start Up 26 Operation 28 Normal Operating Mode 28 Manual Reset for Activated Latching Alarms 28 Magnetic Buttons 29 Powering the Device 30 Faults 30 Accessing Menus 31 Product Settings and Configuration 31 Entering the Product Settings and Configura...

Страница 6: ... Contrast Setting 43 Return to Factory Default Settings 44 Reset Zero Calibration Values 45 Operation Settings and Calibration 46 Zeroing the Sensor 20 9 for O2 47 Calibrating the Sensor Manual Cal 48 Calibrating the Sensor Auto Cal 51 Sensor Alarm Settings 54 Sensor Radio Address 56 Maintenance 57 Troubleshooting 58 Replacing the Desiccant 58 Replacing Catalytic Type Sensors 58 Replacing Non Cata...

Страница 7: ...this manual the instructions reference the use of push buttons located on the front panel of the device In certain environments the activation of the non intrusive magnetic switches through the use of the magnetic tool will replace the directive of the button press actions To apply the magnetic tool hold the tool to the side of the device enclosure adjacent to the push button that you wish to acti...

Страница 8: ...orine Cl2 0 10 0 ppm 0 1 ppm Cl 1 Div 2 1 3 5 10 ppm Chlorine Dioxide ClO2 0 1 00 ppm 0 01 ppm 0 1 0 3 0 3 1 0 ppm Combustible Gas 0 100 LEL 1 LEL Cl 1 Div 1 10 20 50 100 LEL 0 100 volume 1 volume 100 100 100 100 Ethylene Oxide EtO 0 10 00 ppm 0 01 ppm Cl 1 Div 2 1 3 5 10 ppm Formaldehyde CH2O 0 10 00 ppm 0 5 2 5 10 ppm Hydrogen H2 0 100 LEL 1 LEL Cl 1 Div 1 10 20 50 100 LEL Hydrogen Chloride HCl ...

Страница 9: ...ass I Division 1 Groups B C D Ex db IIB Gb Class I Zone 1 AEx db IIB Gb Tamb 40 C to 60 C Sensor Housing Hazardous Location Certification Class I Division 1 or Division 2 Groups B C D Ex db IIB Gb Tamb 40 C to 60 C NOTE Certification only applies to some gases Toxic gases not certified for Div 1 locations are suitable for Div 2 applications but have no third party approval Operating Voltage 12 35 ...

Страница 10: ...and to minimize the risk of personal injury Be sure to maintain and periodically calibrate the AirLink T3A as described in this manual Enclosure Material Aluminum Sensor Housing Material 303 Stainless steel Max Cable Length for Remote Mounted Sensor Kit Electrochemical EC 250 feet Infrared IR 40 feet Catalytic 15 feet Dimensions 5 5 D x 6 W x 7 H Weight 6 lbs Standard Accessories Rain guard Magnet...

Страница 11: ...nent Location 1 MENU button 8 Sensor housing assembly 2 Front panel thumbscrew 9 Rain guard 3 Enclosure 10 Magnetic tool 4 explosion proof plug 11 Alarm 1 LED 5 SUB button 12 ADD button 6 Mounting hole 13 Enclosure lid locking screw 7 Alarm 2 LED 14 Display screen NOTE The AirLink T3A s conduit hubs are 3 4 NPT ...

Страница 12: ...2 Internal Component Location 1 RS 485 Modbus terminal block 5 Sensor housing socket 2 Fault terminal block 6 Antenna fitting connector 3 Power input 4 20 mA output terminal block 7 Relay 1 terminal block if relays installed 4 Radio module 8 Relay 2 terminal block if relays installed ...

Страница 13: ...d 7 Sensor housing base 2 Internal system 8 Sensor element 3 Antenna fitting plug 9 Rain guard 4 Enclosure body 10 with flame arrestor for Class 1 Div 1 assemblies without flame arrestor for Class 1 Div 2 assemblies 5 Antenna fitting 11 Analog sensor board 6 900 MHz or 2 4 GHz antenna 12 Sensor housing plug ...

Страница 14: ...ing site Select a site where the AirLink T3A is not likely to be bumped or disturbed Make sure there is sufficient room to perform start up maintenance and calibration procedures Select a site that is representative of the monitoring environment and where the target gas is likely to accumulate or where it is most likely to leak The AirLink T3A should not be installed near an entrance air intake or...

Страница 15: ...nc plating Figure 4 AirLink T3A Dimensions 3 For a remote mounted kit install the detector junction box at the monitoring environment using techniques appropriate for the mounting area s classification and for the local electrical code The cable and cable bushing cable gland sent with the assembly are not explosion proof WARNING If installed in a classified area use appropriate construction techni...

Страница 16: ...16 Installation AirLink T3A Operator s Manual Figure 5 Remote Mounted Kit s Detector Junction Box Dimensions 4 64 2 70 9 95 ...

Страница 17: ...re It can rest on the edge of the enclosure 3 One end of the cable has a connector and the other has ferruled wires 4 Feed the connector end of the cable through a 3 4 NPT conduit hub at the amplifier junction box WARNING If installed in a classified area use appropriate construction technique to maintain the explosion proof classification of the assembly 5 Plug the connector into the sensor conne...

Страница 18: ...jects or tools to remove the terminal board from the internal system 1 Unscrew the enclosure lid and set it aside 2 Grab the thumbscrews and gently lift the internal system out of the enclosure It can rest on the edge of the enclosure NOTE Disconnecting the sensor connector plug from the sensor housing will allow for the complete removal of the internal system from the device enclosure Disconnecti...

Страница 19: ...ontrol board and complete the following see Figure 6 Connect the power GRAY wire to the VDC terminal Connect the ground BLACK wire to the VDC terminal Connect the signal GREEN wire to the 4 20 mA S terminal CAUTION If shielded cable is used leave the cable shield s drain wire disconnected and insulated at the AirLink T3A You will connect the opposite end of the cable s drain wire to the controller...

Страница 20: ...mbscrews CAUTION Be sure power to the AirLink T3A is off before pulling out the internal system 2 Feed the RS 485 cable through the 3 4 NPT power hub and into the enclosure WARNING Use appropriate construction technique to maintain the explosion proof classification of the assembly 3 Connect the RS 485 B BROWN wire to the B terminal 4 Connect the ground BLACK wire to the GND terminal 5 Connect the...

Страница 21: ...and wire them to the correct terminals as shown below Figure 7 Modbus Wiring NOTE If an RKI controller is not used the AirLink T3A can be connected to a Programmable Logic Controller PLC for RS 485 Modbus data communications For integration and setup refer to the Modbus Register Map found in Appendix C of this manual ...

Страница 22: ...Locate the relay terminal blocks on the radio relay board WARNING Use appropriate construction technique to maintain the explosion proof classification of the assembly 4 Connect the alarm device s power RED terminal to the NO or NC terminal on the relay terminal block NOTE It is recommended that the relay connections are wired as normally open NO However normally closed NC wiring configurations pr...

Страница 23: ... is detailed on page 37 Unlike the optional relay terminals the fault terminal is a wet contact requiring only the power and ground wires of the external fault device to be wired during installation During normal operation the fault terminal provides a maximum of 500 mA at the same voltage that is provided to the power terminal block 1 If necessary unscrew the enclosure lid and pull the internal s...

Страница 24: ...intain the explosion proof classification of the assembly 3 Feed the alarming device s wires through the 3 4 NPT power hub and into the enclosure 4 Locate the fault terminal block on the control board 5 Connect the external fault device power RED wire to the terminal 6 Connect the external fault device ground BLACK wire to the terminal Figure 9 Fault Terminal Wiring ...

Страница 25: ...lds for ease in removal of the internal system from the base of the enclosure Do NOT attempt to loosen or tighten the thumbscrews when opening or closing the enclosure 3 Verify that the sealing ring seated at the threaded opening of the device enclosure is correctly in place 4 Secure the enclosure lid back onto the enclosure WARNING When securing the lid onto the device tighten the enclosure lid b...

Страница 26: ...al 2 Verify that the power wiring is correct and secure 3 Turn on the power source 4 Verify that the controller is on and operating properly Refer to the controller operator s manual 5 The AirLink T3A automatically powers on and enters a 1 minute startup period 6 At the end of the startup the AirLink T3A is in Normal Operating Mode 1 Measured gas concentration reading 2 Gas concentration unit of m...

Страница 27: ... controller Detection Gas Warmup Time After an Extended Time Off Power Warmup Time After a Short Time Off Power Ammonia NH3 12 hours 4 hours Arsine AsH3 2 hours 10 minutes Carbon Dioxide CO2 10 minutes Carbon Monoxide CO 2 hours Chlorine Cl2 Chlorine Dioxide ClO2 Combustible Gas 10 minutes Ethylene Oxide EtO 48 hours Formaldehyde CH2O 10 minutes Hydrogen H2 2 hours Hydrogen Chloride HCl 12 hours H...

Страница 28: ...ground setting see page 35 When the reading surpasses the background setting the reading is sent back to the controller in 5 second intervals NOTE The user interface will be slow to respond until the AirLink T3A establishes a connection with a controller Manual Reset for Activated Latching Alarms Relay alarms set to latching will not deactivate until the alarms are manually reset at the device Thi...

Страница 29: ... the presence of gas until you have exited the menu mode for approximately 1 minute Magnetic Buttons Use the provided magnet to actuate the AirLink T3A s buttons without having to remove the junction box s lid Touch the magnet to the outer edge of the junction box lid near the button you want to actuate Tapping the junction box is the same and pressing and releasing the button Holding the magnet a...

Страница 30: ... off as long as uninterrupted power is supplied to the unit Powering On Powering on the device begins the operation of the unit automatically initiating the system start up cycle and 1 minute warmup period The AirLink T3A will be in normal operating mode at the completion of the system start up To turn the AirLink T3A on press the ADD button once Faults In the event of a device failure the unit wi...

Страница 31: ...ecifications and or site conditions The AirLink T3A continues monitoring for gas while in the Product Settings and Configuration menu The Product Settings and Configuration menu consists of the following screens Alarm Test see page 32 Network ID see page 33 System Information see page 33 Zero Calibration Timers see page 34 Unit Info see page 34 Background Setting see page 35 Relay 1 Latching Auto ...

Страница 32: ...ys are triggered alarm devices will perform as intended initiating emergency procedures as if a harmful or toxic gas was actually present To prevent this from occurring set the controller to calibration mode before performing the alarm test Calibration mode allows data transmission without relay activation It is recommended that an alarm test be conducted EVERY 30 days alongside the maintenance an...

Страница 33: ...or 4 Use the MENU button to scroll through the rest of the Product Settings and Configuration menu and return to Normal Operating Mode System Information The system information screen allows the end user to view the following information The status of the radio link The scale of the sensor element The supply voltage of the sensor unit The voltage value in volts that the sensor was reading when zer...

Страница 34: ...ettings and Configuration menu by pressing and holding the MENU button for 6 seconds 2 Press and release the MENU button until the Zero Calibration Timer Information screen appears 3 Review the information displayed 4 Use the MENU button to scroll through the rest of the Product Settings and Configuration menu and return to Normal Operating Mode Unit Information The unit information screen allows ...

Страница 35: ...for readings below 20 9 and H for readings above 20 9 1 If necessary enter the Product Settings and Configuration menu by pressing and holding the MENU button for 6 seconds 2 Press and release the MENU button until the Background BackgroundL for O2 versions screen appears 3 Press the ADD or SUB button until the Background BackgroundL for O2 versions is set to the desired level 4 For non O2 sensor ...

Страница 36: ...hing Auto Reset Setting 1 If necessary enter the Product Settings and Configuration menu by pressing and holding the MENU button for 6 seconds 2 Press and release the MENU button until the Relay 1 Latching Auto Resetting screen appears 3 Use the ADD and SUB buttons to toggle between the Auto Reset and Latch options 4 Press the MENU button to select the desired setting and to advance to the Relay 2...

Страница 37: ...information about the fault terminal and for instructions on how to wire your device refer to the Connecting the Fault Terminal section of this manual Site specific circumstances may prevent the use of the fault terminal leading to potentially dangerous situations without end user notification In response the AirLink T3A provides a relay fail safe setting to enhance the safety protection provided ...

Страница 38: ...2 fail safe setting screen Relay 2 Fail Safe Setting 1 If necessary enter the Product Settings and Configuration menu by pressing and holding the MENU button for 6 seconds 2 Press and release the MENU button until the Relay 2 Failsafe screen appears 3 Use the ADD and SUB buttons to select the desired fail safe setting for Relay 2 Select Yes to turn the fail safe setting on or select No to leave th...

Страница 39: ...guration menu and return to Normal Operating Mode Calibration Method NOTE LEL and CO2 This screen does not appear in LEL or CO2 versions of the AirLink 6900 because those sensors can only be calibrated using Auto Cal HCl It is recommended that the HCl version only be calibrated using Auto Cal but Manual Cal can be used if desired AsH3 and HF It is recommended that AsH3 and HF versions only be cali...

Страница 40: ...dress field The AirLink T3A uses the original Modbus RTU over the RS 485 link RS 485 Modbus has 255 addresses ranging from 1 to 255 Eight of the addresses are used for internal system settings leaving addresses 1 to 247 available for your device The RS 485 Modbus communication parameters used in the AirLink T3A is 8 data bits no parity and 1 stop bit these parameters are fixed and cannot be change...

Страница 41: ... 8 data bits no parity bit and 1 stop bit 8 N 1 these parameters are fixed and cannot be changed Some devices come with different Modbus baud rates Check with your system administrator to determine if a different Modbus baud setting is needed for your system The pre set Modbus baud settings available for the AirLink T3A are the following 110 bps 300 bps 1200 bps 2400 bps 4800 bps 9600 bps 19200 bp...

Страница 42: ...recalibrated The factory default settings on the AirLink T3A for the 4 20 mA offset are 4 00 mA for the zero offset and 20 00 mA for the full scale offset 1 If necessary enter the Product Settings and Configuration menu by pressing and holding the MENU button for 6 seconds 2 Press and release the MENU button until the 4 20 mA Offset screen appears 3 Press and release the ADD button to set the 4 20...

Страница 43: ...f the display screen may need to be adjusted for optimum viewing The factory default setting on the AirLink T3A for the display screen contrast is 29 approximately 45 of the contrast scale The contrast setting ranges from 1 to 64 NOTE Setting the contrast too low will cause the display image to become faint or indistinguishable especially when the unit is located in areas with full sun The resulti...

Страница 44: ...arm Test Network ID 5 System Information Zero Calibration Timer Cleared Unit Information Background Setting 4 Relay 1 Latching Auto Reset Auto Reset Relay 2 Latching Auto Reset Auto Reset Relay 1 Fail Safe Setting No Off Relay 2 Fail Safe Setting No Off Calibration Method Manual RS 485 Modbus Address Setting 1 RS 485 Modbus Baud Setting 9600 bps 4 20 mA Zero Offset Setting 4 00 mA 4 20 mA Full Sca...

Страница 45: ...he device to its factory default settings press the SUB button to select No to continue to the Reset Zero Cal Only screen 6 Use the MENU button to scroll through the rest of the Product Settings and Configuration menu and return to Normal Operating Mode NOTE If the AirLink T3A is reset to the factory default settings ALL configuration steps MUST be repeated and the device MUST then be zeroed and c...

Страница 46: ...ation values press the SUB button to select No to leave the Product Settings and Configuration menu and to return the device to normal operating mode 6 Press and release the MENU button to return to Normal Operating Mode NOTE If the AirLink T3A s stored Zero and Calibration values are reset the device MUST be zeroed and calibrated for proper and safe operation of the device Operation Settings and ...

Страница 47: ...lator with knob calibration cup calibration tubing zero air cylinder for CO2 sensor or if not in a fresh air environment 100 N2 cylinder if zeroing a CO2 sensor NOTE Since there is a background of CO2 in air it is necessary to use a CO2 free cylinder when zeroing a CO2 sensor Procedure 1 While the product is in normal operating mode press the MENU button to activate the Operation Settings menu 2 P...

Страница 48: ...The zero process cannot be stopped without disconnecting the power from the unit 6 When the zero process is complete press the MENU button to advance to the calibration screen 7 If a zero air calibration cylinder or 100 N2 cylinder for CO2 sensors was used turn the regulator knob clockwise to close the regulator Calibrating the Sensor Manual Cal Either the Manual Cal screen or the Auto Cal screen ...

Страница 49: ... of your detected gas NOTE Some detected gases use surrogate gases for calibration Detected gases needing a surrogate gas for calibration are listed below If you are using a surrogate gas for calibration that surrogate gas concentration multiplied by the factor listed below should equal about 50 of the detected gas full scale Procedure 1 If you are calibrating with EtO calibration gas connect the ...

Страница 50: ...ration cylinder 8 For all calibration gases except Cl2 ClO2 EtO and HCl Let the gas flow for 1 minute For Cl2 calibration gas Let the gas flow for 3 minutes For ClO2 calibration gas Let the gas flow for 6 minutes For EtO calibration gas Let the gas flow for 1 5 minutes For HCl calibration gas Let the gas flow for 5 minutes 9 Use the ADD and SUB buttons to finish adjusting the reading on the screen...

Страница 51: ...onment Materials 0 5 LPM fixed flow regulator with knob and calibration tubing WARNING If calibrating with Cl2 or HCl a regulator must be dedicated for use with that gas only Do not use that dedicated regulator for any other gases particularly H2S calibration cup calibration cylinder or gas generator For O2 sensors RKI recommends using 10 18 O2 For all other sensors RKI recommends using 50 of the ...

Страница 52: ...on to select Yes to begin the calibration process and to advance to the calibration confirmation screen If you do not wish to calibrate the sensor press the SUB button to select No to advance to the sensor radio address setting screen 4 Press the ADD button to select Yes to confirm that you want to calibrate the sensor and to continue to the concentration setting screen If you do not wish to conti...

Страница 53: ...late the area well when calibrating with high concentrations of toxic gases 11 Press the MENU button to begin calibrating the sensor The unit automatically begins the calibration process The display shows a countdown of the time remaining until the process is complete The amount of time varies based on the gas type NOTE Once the calibration countdown has started the process cannot be stopped witho...

Страница 54: ...m indicator LEDs will not switch off until the gas level reading at the sensor has fallen 10 below the alarm set points or until the alarm is manually reset at the device dependent upon the relay latching auto reset settings If the device includes the optional two dry contact relays Relay 1 and Relay 2 the Alarm 1 and Alarm 2 settings will control the wired relays respectively When external alarmi...

Страница 55: ...ensor Alarm 2 increasing decreasing setting screen Sensor Alarm 2 Increasing Decreasing Setting 1 From normal operating mode press and release MENU until the Alarm 2 increasing decreasing setting screen appears 2 Use the ADD and SUB buttons to select between activation on an Increasing or Decreasing gas level respectively 3 Press the MENU button to scroll to the Radio Address screen NOTE The alarm...

Страница 56: ...press and release MENU until the sensor radio address screen appears 2 Use the ADD and SUB buttons to increase and decrease the sensor radio address respectively 3 Press the MENU button to save the desired setting and return to Normal Operating Mode NOTE The alarms will NOT activate even in the presence of gas until you have been out of the Operation Settings menu for 1 minute For auto resetting a...

Страница 57: ...ensitivity or corrosion may be gradual if such materials are present in sufficient concentrations The performance of the device may be impaired during operation in the presence of substances that can cause corrosion on gold plating Continuous and high concentrations of corrosive gases may also have a detrimental long term effect on the product s service life The presence of such substances in an a...

Страница 58: ...UB button for approximately 6 seconds until OFF shows on the display screen F5 Try to Zero Again The unit did not zero correctly due to the presence of gas a sensor error or a sensor interface board error 1 Re zero the device in clear air 2 Replace the sensor element 3 Replace the sensor interface board F6 Try to Calibrate Again The unit did not calibrate correctly due to the absence of gas no rad...

Страница 59: ...he sensor housing base Set aside 4 Unscrew and remove the old sensor element board Keep the removed screws 5 Install the new sensor element board Ensure that the pins on the new sensor element board align with the sockets on the sensor housing board 6 Secure the new sensor element board with the screws removed in Step 4 ...

Страница 60: ...the device MUST be zeroed and calibrated for proper operation of the device WARNING Do not remove the sensor housing cap or enclosure lid while the circuits are energized unless the area is determined to be non hazardous Keep the sensor housing cap and enclosure lid tightly closed during operation CAUTION The internal components can be static sensitive Use caution when opening the enclosure and ha...

Страница 61: ...the sockets on the sensor housing board 6 Screw the sensor housing cap back onto the sensor housing base ensuring that the sensor housing cap is only tightened hand tight 7 Press the ADD button to turn the AirLink T3A on 8 Allow the detector to warmup for the appropriate amount of time as shown below depending on the sensor type Detection Gas Warmup Time Ammonia NH3 12 hours Arsine AsH3 2 hours Ca...

Страница 62: ...e Dioxide ClO2 Combustible Gas 10 minutes Ethylene Oxide EtO 48 hours Formaldehyde CH2O 10 minutes Hydrogen H2 2 hours Hydrogen Chloride HCl 12 hours Hydrogen Cyanide HCn Hydrogen Fluoride HF 2 hours Hydrogen Sulfide H2S Nitric Oxide NO 12 hours Nitrogen Dioxide NO2 2 hours Oxygen O2 Ozone O3 Phosphine PH3 Sulfur Dioxide SO2 Detection Gas Warmup Time ...

Страница 63: ...r turn off power to the AirLink T3A 2 Unscrew the enclosure lid and set it aside 3 Grab the thumbscrews and gently lift the internal system out of the enclosure It can rest on the edge of the enclosure NOTE Disconnecting the sensor connector plug from the sensor housing will allow for the complete removal of the internal system from the device enclosure Disconnecting the internal system may provid...

Страница 64: ...thumb holds for ease in removal of the internal system from the base of the enclosure Do NOT attempt to loosen or tighten the thumbscrews when opening or closing the enclosure 10 Verify that the sealing ring seated at the threaded opening of the device enclosure is correctly in place 11 Secure the enclosure lid back onto the enclosure WARNING When securing the lid onto the device tighten the enclo...

Страница 65: ...ide H2S for up to 100 ppm full scale 66 0003 2 Sensor hydrogen sulfide H2S for 200 to 2 000 ppm full scale 66 0004 1 Sensor hydrogen chloride HCl for up to 20 ppm full scale 66 0004 2 Sensor hydrogen chloride HCl for up to 100 ppm full scale 66 0005 Sensor hydrogen cyanide HCN 50 ppm full scale 66 0006N 1 Sensor ammonia NH3 for up to 100 ppm full scale 66 0006N 2 Sensor ammonia NH3 for 200 to 1 00...

Страница 66: ...alibration cylinder 15 LEL hexane in air 34 liter steel 81 0010RK 01 Calibration cylinder 10 LEL 5000 ppm methane in air 34 liter steel 81 0010RK 03 Calibration cylinder 10 LEL 5000 ppm methane in air 103 liter 81 0012RK 01 Calibration cylinder 50 LEL methane in air 34 liter steel 81 0012RK 03 Calibration cylinder 50 LEL methane in air 103 liter 81 0013RK 01 Calibration cylinder 50 volume methane ...

Страница 67: ...inder 50 ppm NH3 in nitrogen 58 liter 81 0176RK 02 Calibration cylinder 25 ppm NH3 in nitrogen 58 liter 81 0176RK 04 Calibration cylinder 25 ppm NH3 in nitrogen 34 liter aluminum 81 0180RK 02 Calibration cylinder 10 ppm NO2 in nitrogen 58 liter 81 0180RK 04 Calibration cylinder 10 ppm NO2 in nitrogen 34 liter aluminum 81 0181RK 02 Calibration cylinder 25 ppm NO in nitrogen 58 liter 81 0181RK 04 Ca...

Страница 68: ... for 34 liter aluminum 58 liter and 103 liter calibration cylinders cylinders with internal threads 81 1183 Calibration cup with 3 foot tube 81 1184 Rain guard 81 9029RK 02 Calibration cylinder 100 ppm NH3 in N2 58 liter 81 9029RK 04 Calibration cylinder 100 ppm NH3 in N2 34 liter aluminum 81 9062RK 04 Calibration cylinder 5 ppm EtO in air 34 liter aluminum 82 0101RK Magnetic wand Table 12 Parts L...

Страница 69: ...pecial status conditions as shown below The 4 mA allows the receiving controller PLC to distinguish between a zero signal a broken wire or an unresponsive instrument Benefits of 4 20 mA convention are that it is an industry standard low cost to implement can reject some forms of electrical noise and the signal does not change value around the loop as opposed to voltage The key advantage of the cur...

Страница 70: ...lectrochemical EC Sulfur Dioxide SO2 0 20 ppm Electrochemical EC Oxygen O2 0 25 Electrochemical EC Carbon Monoxide CO 0 1000 ppm Electrochemical EC Chlorine CL2 0 20 ppm Electrochemical EC Hydrogen Chloride HCL 0 30 ppm Electrochemical EC Ammonia NH3 0 100 ppm Electrochemical EC Ammonia Medium Range NH3300 0 300 ppm Electrochemical EC Ammonia High Range NH3A 0 1000 ppm Electrochemical EC Hydrogen ...

Страница 71: ... data is transferred along the Modbus network at a specified Modbus baud or rate of speed Though small networks that have a high number of devices connected will incur a small proportional delay in the communication transfer of data Wiring Configurations A daisy chain is a wiring scheme in which multiple devices are wired together in a sequence or in a ring Daisy chains may be used for power analo...

Страница 72: ...nnected on the line Connection distances of 100 feet or less require 22 to 24 gauge wire Connection distances that range more than 100 feet require 18 to 20 gauge wire For more information on properly wiring a daisy chain network of devices for Modbus consult the following diagram The signal wire of each unit is run to the signal terminal of the neighboring sensor With each device connected to the...

Страница 73: ... 2 FLOAT 1 32000 16 22 Precision R 1 INT 0 3 17 23 Relay Setting R 1 BFLD See Relay Setting Table 18 24 Days Since Last Zero R 1 UINT 0 60000 60000 Default to Never 19 25 Calibration Type R 1 ENUM 0 1 1A 26 Auto Calibration Value R 2 FLOAT Numerical Gas Reading 1C 28 Days Since Last Calibration R 1 UINT 0 60000 60000 Default to Never 1E 30 Relay 1 State R 1 INT 0 Relay Inactive 1 Relay Active 1F 3...

Страница 74: ... Dioxide 6 LEL Combustible Gas 7 VOC Volatile Organic Compounds 9 HCL Hydrogen Chloride 10 NH3 Ammonia 12 CLO2 Chlorine Dioxide 13 HCN Hydrogen Cyanide 14 F2 Fluorine 15 HF Hydrogen Fluoride 16 CH2O Formaldehyde 17 NO2 Nitrogen Dioxide 18 O3 Ozone 26 PH3 Phosphine 27 HBr Hydrogen Bromide 28 EtO Ethylene Oxide 29 CH3SH Methyl Mercaptan 30 AsH3 Arsine Response Unit Type 0 ppm 1 Response Sensor Mode ...

Страница 75: ...rror 6 Calibration Error Response Sensor Type 0 EC Electrochemical 1 IR Infrared 2 CB Catalytic Bead 4 PID Photo Ionization Detector Bit Relay Setting Function 5 Relay 2 Increasing Decreasing Setting 0 Decreasing 1 Increasing 4 Relay 1 Increasing Decreasing Setting 0 Decreasing 1 Increasing 3 Relay 2 Failsafe Setting 0 No Off 1 Yes On 2 Relay 1 Failsafe Setting 0 No Off 1 Yes On 1 Relay 2 Latch Au...

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