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Related Manuals for Sperian Biosystems NXP
Summary of Contents for Sperian Biosystems NXP
- Page 1 Biosystems Fixed Gas Detector Head Reference Manual Sperian Instrumentation 651 South Main Street Middletown, CT 06457 800-711-6776 860-344-1079 Fax 860-344-1068 Part Number 13-345 Version 1.01 10SEP2009 http://www.biosystems.com...
- Page 3 THE BIOSYSTEMS NXP FIXED GAS DETECTOR HEAD HAS BEEN DESIGNED FOR THE DETECTION AND MEASUREMENT OF POTENTIALLY HAZARDOUS ATMOSPHERIC CONDITIONS. IN ORDER TO ASSURE THAT THE USER IS PROPERLY WARNED OF POTENTIALLY DANGEROUS ATMOSPHERIC CONDITIONS, IT IS ESSENTIAL THAT THE INSTRUCTIONS IN THIS REFERENCE MANUAL BE READ, FULLY UNDERSTOOD, AND FOLLOWED.
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Page 4: Table Of Contents
Table of Contents Signal Words ........................5 Modification of Sperian Instrumentation Products ...............5 Operating Temperature and Humidity Limits ...............5 Warnings and Cautions .......................6 Overview........................7 Capabilities ......................7 Method of sampling....................7 Sensor options .....................7 Verification of accuracy ..................7 Displays and controls ...................8 Power requirements .....................8 Alarms and Alarm Logic ..................8... - Page 5 Modes of operation ....................18 Clearing the MAX reading ..................19 Effect of contaminants on NXP sensors.............20 3.3.1 Effects of contaminants on oxygen sensors...........20 3.3.2 Effects of contaminants on combustible sensors ...........20 3.3.3 Effects of contaminants on toxic gas sensors ..........20 Sensor Replacement ..................21 Verification of Accuracy (Calibration) .................22 Warnings and cautions concerning verification of accuracy ......22 Overview of verification of accuracy..............22...
- Page 6 LED Test ......................35 6.11 Audible Alarm Test.....................35 Service........................36 Returning your NXP to Sperian Instrumentation for service or repair ......36 Appendices ........................37 Appendix A: NXP Toxic Sensor Cross Sensitivity Data ..........37 Appendix B: Fault Conditions..................38 Appendix C: Calibration Frequency Recommendation ..........39...
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Page 7: Signal Words
The Biosystems NXP’s operating temperature range is printed on the label on the inside of the instrument. The Biosystems XPR’s operating temperature range is printed on the housing. Use of Sperian Gas Detection products outside of their specified operating temperature ranges may result in... -
Page 8: Warnings And Cautions
Sperian for use in calibrating the NXP. Customers are strongly urged to use only Sperian calibration materials when calibrating the NXP. Use of non-... -
Page 9: Overview
Capabilities Sensor options The NXP Gas Detector Head is a fixed NXP Gas Detector Heads can be gas detection system from Sperian configured to detect a number of different Instrumentation. The NXP can function atmospheric hazards. Each NXP uses a... -
Page 10: Displays And Controls
(20.9% oxygen, 0 PPM toxic gas, 0% LEL from a controller or via a standard wall cube combustible gas), a "fresh air zero" available from Sperian. adjustment must be made. For most fixed The NXP requires a power supply of 13-30 applications, where the freshness of the VDC. -
Page 11: Sensor Over-Range Alarms
software. Please see the BioTrak II is selected that is below current alarm operation manual for instructions. The levels, the alarms will be adjusted to alarm levels apply to both warning and default values for that range. danger alarms, with the following •... -
Page 12: Alarm Relays
The relay contacts in the NXP do not supply power to the external accessories. They act as switch contacts only. External alarms, relays and contactors require their The instrument will act as if a danger alarm own power supplies. condition exists, even if the alarms have The maximum rating of the NXP’s relay been disabled. -
Page 13: Ma Current Loop
• The standard sensor can be used for non- Minimum reading during event hazardous (non-explosive) environments. • Maximum reading during event For use in hazardous locations, the XPR • Average reading during event explosion-proof sensor housing must be • Temperature at end of event used. -
Page 14: Installation
Following authorized to do so. Call Sperian’s installation, Sperian strongly Instrument Service Department at (860) recommends that full testing and... -
Page 15: Cautions
VDC. In this configuration, the NXP must ducts in which gases that are heavier than be set to Source mode (see Figure 2.5). air may collect. Cautions There are many circumstances that may modify this general advice. It is beyond The NXP MUST be the scope of this manual to attempt to installed in a non-hazardous area. -
Page 16: Grounding
Lower power supply voltages may require scale reading (100% LEL or a full-scale larger size wire. oxygen or toxic gas reading). The NXP is shipped in Source Mode, Conductor Number of Maximum Size (AWG) Conductors length (ft) meaning it acts as the source of the loop current. - Page 17 connector. Refer to Figure 2.5 for the 8. Apply power to the NXP and ensure correct connections. correct operation. Make sure the cover gasket is seated, close the cover and 7. Plug the connector into J1 on the PCB. tighten the cover screws securely. Reinstall the electronics assembly and push until it is fully seated against the standoffs to which it mounts.
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Page 18: Remote Sensor Installation
Remote Sensor Installation connecting the cable. When it is connected, replace the electronics The NXP normally comes with the sensor assembly in the housing, pushing firmly housing attached to the instrument. When so that it seats on its mounting points. necessary, the sensor can be installed remotely, up to 50 feet from the instrument. - Page 19 explosion-proof conduit is required from the sensor connection box to the safe area. Check local electrical requirements for proper conduit and conduit seals. Route the cable through the conduit to the location of the remote sensor. Inside the sensor connection box, connect the cable to the sensor connector, observing the polarity of the connectors.
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Page 20: Field Usage
Field Usage Modes of operation Press the MODE button to scroll through Once the NXP has been installed and the screens. The current gas reading connected to a power source, it will run screen is shown during normal operation. through a boot-up process, and then be in continuous operation. -
Page 21: Clearing The Max Reading
If the Calibration Interval has been set, ↕ pressing the MODE button again within 8 seconds will display the number of days until calibration is due. In addition, every 30 seconds the “CAL dUE” reminder will appear on the display and the red LEDs will flash. -
Page 22: Effect Of Contaminants On Nxp Sensors
“Substance-specific” sensors are as carbon dioxide. The oxygen sensors designed to respond only to the gases used in Sperian instruments are not that they are intended to measure. The recommended for use in atmospheres higher the specificity of the sensor the... -
Page 23: Sensor Replacement
Cross sensitivity figures for toxic Once the stabilization period has passed, sensors and common interfering gases perform the Fresh Air Zero and the Gas are listed in Appendix A. Calibration procedures as discussed in sections 4.3 and 4.4. Sensor Replacement The sensor in the NXP is located inside the sensor housing located on the bottom of the instrument (see figure 1.5), or at the... -
Page 24: Verification Of Accuracy (Calibration)
“Zero Air”, which contains potentially dangerous readings. See 20.9% oxygen and no contaminants, must Appendix C for Sperian’s position on be used to verify that the detector is calibration frequency. displaying the correct readings for a fresh air atmosphere, and to perform a fresh air 4.2 Overview of verification of... -
Page 25: Accuracy Of Toxic And Lel Sensors
If the oxygen detector is reading anything If a cylinder of “Zero Air” is to be used to except 20.9% when exposed to fresh air, provide the fresh air source during the it should be fresh air calibrated as fresh air calibration, connect the cylinder discussed in section 4.3. -
Page 26: Span Calibration Of Toxic And Lel Sensors
Customers are 5-second countdown with the calibration strongly urged to use only Sperian bottle icon lit. calibration materials when calibrating To conclude the fresh air calibration the NXP. Use of non-standard... -
Page 27: Test Mode
warning symbol will remain on to remind the user that alarms are currently disabled. ↓ Once the readings drop below the alarm level threshold the detector will return to normal operation. However, alarms will be enabled again in 60 seconds regardless of the gas level. -
Page 28: Calibration Failures
“no CAL” and then the countdown for Test Mode before returning to the current gas Customers are reading screen. strongly urged to use only Sperian calibration materials when calibrating the NXP. Use of non-standard calibration gas and/or calibration kit components when calibrating the NXP... - Page 29 Methane, returning to the current gas reading Propane Equivalent and Pentane screen. Equivalent. 6. Inoperative sensor. Contact Sperian Instrumentation for a replacement sensor. 7. Instrument problem. Contact Sperian Instrumentation’s Instrument Service department at the phone number on the front of this manual.
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Page 30: Configuration
MAX Clr screen after about 3 seconds. IrDA communication using Sperian’s Continue to hold the button. In a few more BioTrak II software. Please see the seconds, “SEt” will be shown. -
Page 31: Setup Submenu Flow Chart
Setup Submenu Flow Chart Depending on the installed sensor, some of the following menu choices may be unavailable. See individual sections for more information. Enter Setup Menu Back to gas reading Set Date, Time (see 5.3) Set Loop Range (see 5.4) Set Alarm Levels (see 5.5) Set Alarm Latch (see 5.6) Set Combustible Sensor Display (see 5.7) -
Page 32: Set Date And Time
Set Date and Time attached 4-20 mA controller. Range adjustment or recalibration of the The first submenu controls date and time controller may be necessary. functions. “SEt” “dAt” will be shown. Set Alarm Levels ↔ ↔ Press MODE again within 5 seconds to set date and time. -
Page 33: Set Alarm Latch
Press the MODE button within 5 seconds Set Combustible Gas Sensor to enter the alarm setting submenu. The Display Low Danger alarm setting will be shown. ↔ Press the MODE button within 5 seconds to change the alarm level. Release the The NXP can display combustible gas MODE button and wait 5 seconds for the level in either %LEL or %CH... -
Page 34: Diagnostics
Diagnostics The NXP includes a diagnostics menu that allows the user to view certain internal parameters and exercise the NXP’s output functions. This menu is The instrument will automatically scroll accessed though the MODE button. through all of the menu choices. See the The menu options in the diagnostic menu flow chart in section 6.2 for details. -
Page 35: Diagnostic Menu Flow Chart
Diagnostic Menu Flow Chart View Serial Number and Software Version (see 6.3) View Sensor Count Display (see 6.4) View Sensor Temperature Display (see 6.5) Test 4-20 mA Current Loop Output (see 6.6) Test Local Relays (see 6.7) Test Local 12-Volt Output (see 6.8) Test LCD Segments and Backlight (see 6.9) Test LEDs (see 6.10) Test Audible Alarm Output (see 6.11) -
Page 36: Serial Number / Software Version
The first value shown is the sensor type 3.5 mA 3.75 mA 4.0 mA and count. This value is used by Sperian service personnel to determine the correct 8.0 mA 12.0 mA 16.0 mA functioning of the sensor. -
Page 37: 12-Volt Output Test
During this test, the relays in the NXP 6.10 LED Test head will be alternately activated and The next option is the LED test. This test deactivated in order to test any devices will show “LEd” on the display and that are connected to them. -
Page 38: Service
Service Please contact the Sperian Instrumentation Service Department at Returning your NXP to Sperian (860) 344-1079 or 800-711-6776 if you Instrumentation for service or repair require any additional information. Please contact the Sperian Note: The return authorization number Instrumentation Service Department at... -
Page 39: Appendices
The table below lists the cross sensitivity of electrochemical toxic sensors used in Biosystems NXP gas detectors to gases other than their target gas. Depending on the nature of the reaction each gas has with the sensor, the effect can either decrease the signal (negative cross sensitivity) or increase the signal (positive cross sensitivity). -
Page 40: Appendix B: Fault Conditions
Appendix B: Fault Conditions F5 – EEPROM Write Fault This fault occurs when the instrument Fault conditions are indicated on the encounters an error while trying to write to display by the letter ‘F’ followed by one or the EEPROM that stores the instrument two decimal digits. -
Page 41: Appendix C: Calibration Frequency Recommendation
One of the most common questions Industrial Safety Equipment changes in the work that is that we are asked at Sperian Association (ISEA). The being performed, should Instrumentation is: “How often “Instrument Products” group of this... -
Page 42: Appendix D: Sperian Instrumentation Warranty Gas Detection Products
Instrument’s Reference Manual are not covered by the Sperian warranty. The obligation of Sperian under this warranty is limited to the repair or replacement of components deemed by the Sperian Instrument Service Department to have been defective under the scope of this standard warranty.
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