Related Manuals for biosystems ZoneGuard
Summary of Contents for biosystems ZoneGuard
- Page 1 ZoneGuard Single Channel Fixed Gas Detection System Reference Manual 651 South Main Street Middletown, CT 06457 Tel (860) 344-1079 (800) 711-6776 Fax (860) 344-1068 Version 2.3 30SEPT2005 p/n 13-063...
- Page 2 THE ZONEGUARD SINGLE CHANNEL FIXED GAS DETECTION SYSTEM 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 CONDITIONS, IT IS ESSENTIAL THAT THE INSTRUCTIONS IN THIS MANUAL BE READ, FULLY UNDERSTOOD, AND FOLLOWED.
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Page 3: Table Of Contents
Cautions ______________________________________________________________________ 9 2.6.2 ZoneGuard controller connections __________________________________________________ 9 ----------------------------------------------------------------------------------------------------------------------9 NITIAL SETUP --------------------------------------------------------------------------------------------------------------10 ORMAL OPERATION 2.8.1 Overview of ZoneGuard operation __________________________________________________ 10 2.8.2 Turning the ZoneGuard on ________________________________________________________ 10 2.8.3 Turning the ZoneGuard off ________________________________________________________ 10 2.8.4 Start-up sequence ______________________________________________________________ 10 ---------------------------------------------------------------------------------------------------------------10 PERATING MODES 2.9.1... - Page 4 UARD DEFAULT ALARM SETTINGS ---------------------------------------------------------------------------------------22 PPENDIX UARD SENSOR RANGES -----------------------------------------------------------22 PPENDIX UARD TOXIC SENSOR CROSS SENSITIVITY DATA ----------------23 PPENDIX UARD DIMENSIONAL DRAWINGS ELECTRICAL SCHEMATICS AND WIRING DIAGRAMS --------------------------------------------------------------------------------------------26 PPENDIX ALIBRATION REQUENCY BIOSYSTEMS STANDARD WARRANTY GAS DETECTION PRODUCTS ....27 Page 3...
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Page 5: Signal Words
SIGNAL WORDS The following signal words, as defined by ANSI Z535.4-1998, are used in the Zoneguard Reference Manual. indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. -
Page 6: Chapter 1. Description
(O ) sensor, a catalytic-bead The ZoneGuard offers a choice of two modes of operation, pellistor for LEL combustible gas, and substance-specific Text Only (“OK”), and Basic (numeric readings) to provide electrochemical sensors for carbon monoxide (CO),... -
Page 7: D Isplays And Controls
Relays and outputs and audible alarms cease. See Appendix F for ZoneGuard electrical schematics It is possible to set ZoneGuard alarms so that they "latch". and wiring diagrams. In the latched condition, once an alarm occurs both visual and audible alarms will continue to sound even after the 1.8.1 VAC relay contacts... -
Page 8: Output Operation
ZoneGuard +12 VDC outputs may only be used to provide power to remote alarm devices which The ZoneGuard controller unit is enclosed in a durable, have been approved by Biosystems for use with the gasketed, fiberglass NEMA 4X case. The On/Off Mode ZoneGuard system. -
Page 9: Chapter 2. Installation And Basic Operation
There are many circumstances which may modify this the relay PCB. In the case of ZoneGuard systems with general advice. For example, the molecular weight of nitrogen (MW ≅ 28) is very close to that of air (MW ≅ 29). -
Page 10: W Iring Recommendations
ZoneGuard system. Use of non-approved devices may the breathing area of personnel being protected. cause damage to the ZoneGuard system, and void the When installing detector assemblies it is important to ensure Biosystems Standard Warranty for Gas Detection that the sensor is not exposed to liquid or dust contamination Products. -
Page 11: N Ormal Operation
ZoneGuard controller housing is called the Mode button. It The simplest mode of operation is the “Text Only” mode. In is used to turn the ZoneGuard on and off, as well as to this mode, during normal operation the LCD screen displays control most other operations of the instrument. -
Page 12: Calibration Overview
To enable or disable use of the Mode button press and hold Zoneguard calibration. Customers are strongly urged down the “+” key while the ZoneGuard system is in normal to use only Biosystems calibration materials when operation. The display will show the message “MODE OFF”... -
Page 13: 3.3.1 Fresh Air "Zero" In Contaminated Air
3.6.1. If the used in Biosystems instruments are not recommended for ZoneGuard is located in an area in which the air may not be continuous use in atmospheres which contain more than 25 fresh, see section 3.3.1 below for instructions on fresh air % CO 2 . -
Page 14: Effects Of Contaminants On Toxic Gas Sensors
The audible and visual alarms will sound To perform a Functional (bump) test, continuously until the instrument is manually reset by turning 1. Place the Zoneguard in Basic Mode so that readings are it off, then turning the instrument back on. given in numbers. -
Page 15: Fresh Air "Zero" Auto-Calibration Sequence
The “One Button” fresh air zero procedure may only be done ZERO”. In this case the instrument must be fresh air zeroed while the ZoneGuard system is being operated in the Basic using the “Cal” button on the instrument keypad and operating mode. -
Page 16: Manual Calibration Procedure
Manual calibration procedure Span calibration procedures using buttons on the instrument It is also possible to calibrate the ZoneGuard manually using keypad are only necessary when the adjustment necessary the four buttons on the instrument keypad. to restore accuracy is outside the permissible window of 3.7.1 Manual Fresh air "zero"... -
Page 17: Manual True Zero Span Calibration For Oxygen Sensors
Section 3.6.1. Following reinitialization of the instrument, or in cases where the ZoneGuard is being used to monitor oxygen levels that are close to 0.0%/volume and increased accuracy near 0 is required, the ZoneGuard may be manually span adjusted. A... -
Page 18: Chapter 4. Setting Alarm Levels
It the warning alarm. In the latched condition, the warning is possible, if desired, to set ZoneGuard alarms so that they alarms will continue to sound even after the alarm “latch”. In the latched condition, once an alarm occurs both condition has cleared. -
Page 19: Restoring The Factory Default Alarm Settings
→ → and the type of sensor currently installed. → 3. The readings shown on the ZoneGuard display will → slowly “ramp” up from zero to 10% above the high alarm setpoint, then back down again. The audible and visual alarms will be activated as the readings exceed 3. -
Page 20: Chapter 5. Advanced Functions
ZoneGuard back on. concentration stored in the instrument memory. 4. The ZoneGuard LCD will display alternating “CAL” and For instance, Biosystems normally supplies 50 ppm carbon “GAS” messages for 4 seconds. The display will then... -
Page 21: Appendices
Auto Cal complete. Manual fresh air calibration Turn ZoneGuard on. In fresh air, press CAL to enter fresh air “zero” mode. Press CAL to do the fresh air zero; or press Mode to exit without doing “zero”. Manual span calibration Hold CAL down and turn ZoneGuard on. -
Page 22: Appendix B Zoneguard Fixed Gas Detection System Technical Specifications
Calibration Materials 54-17-K0301 Calibration kit for ZoneGuard fixed detection systems. Includes foam lined carrying case with room for up to 3 cylinders of gas, one standard 1.0 LPM fixed flow rate regulator, calibration adaptors, and 3 feet of tubing. Kit does not include gas. -
Page 23: Appendix C Zoneguard Default Alarm Settings
Appendix E ZoneGuard toxic sensor cross sensitivity data The table below lists the cross sensitivity of electrochemical toxic sensors used in Biosystems portable 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;... -
Page 24: Appendix F Zoneguard Dimensional Drawings, Electrical Schematics, And Wiring Diagrams
Appendix F ZoneGuard dimensional drawings, electrical schematics, and wiring diagrams Dimensional drawing of ZoneGuard controller Page 23... - Page 25 Dimensional drawing of ZoneGuard explosion-proof remote detector assembly Page 24...
- Page 26 Dimensional drawing of ZoneGuard standard (non-explosion-proof) remote detector assembly Page 25...
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Page 27: Appendix G Calibration Frequency
One of the most common questions We are often asked whether there are to contaminants that might have an that we are asked at Biosystems is: any circumstances in which the period adverse effect on the calibration “How often should I calibrate my gas... -
Page 28: Biosystems Standard Warranty Gas Detection Products
Reference Manual are not covered by the Biosystems standard warranty. The obligation of Biosystems under this warranty is limited to the repair or replacement of components deemed by the Biosystems Instrument Service Department to have been defective under the scope of this standard warranty. To receive...
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