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Summary of Contents for biosystems Toxi Plus
- Page 1 Reference Manual Toxi Plus Single Sensor Gas Detector 651 South Main St. Middletown, CT 06457 860-344-1079 FAX 860-344-1068 04AUG2004 P/N: 13-044 Version 3.3...
- Page 3 THE TOXI PLUS PERSONAL PORTABLE GAS DETECTOR 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 4: Table Of Contents
2.3.1 Low battery voltage alarms ................14 2.3.2 Battery replacement ..................14 Methods of sampling ..............15 2.4.1 Using the hand aspirated sample draw kit ............15 Chapter 3 Calibration Verification of accuracy..............16 3.1.1 Effect of contaminants on Toxi Plus sensors ............ 16... - Page 5 3.1.1.1 Effects of contaminants on toxic gas sensors 3.1.1.2 Biosystems “CO Plus” dual purpose carbon monoxide / hydrogen sulfide sensor 17 3.1.1.2.1 Relative response of the “CO Plus” sensor to CO and H S gases Fresh air "zero" calibration............. 18 Functional (bump) test..............
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Page 6: Introduction
The Toxi Plus is a personal, portable, microprocessor controlled, single sensor gas detector. The hazard the Toxi Plus is designed to detect is determined by the type of sensor installed at the time of purchase. The Toxi Plus may be configured for the... -
Page 7: Warnings And Cautions
Biosystems for use in calibrating the Toxi Plus. Use of non-standard calibration gas and/or calibration kit components when calibrating the Toxi Plus can lead to dangerously inaccurate readings and may void the standard Biosystems warranty. -
Page 9: Chapter 1 Toxi Plus Description
Methods of sampling Toxic gas readings are given in PPM (parts The Toxi Plus may be used as either a per million) concentrations. "Diffusion" or "Sample-Draw" type 1.3.1 Electrochemical toxic monitoring device. -
Page 10: Display Backlight
Procedures for latching Toxi Plus alarms are given in Chapter 4. Calibration is a two step procedure. In the first step the Toxi Plus is taken to an area 1.6.1 Atmospheric hazard where the atmosphere is fresh and a "zero"... -
Page 11: Special Microprocessor Features
The vibrator alarm option must be specified at the time the instrument is Several automatic programs prevent tampering and misuse of the Toxi Plus. purchased. Each time the detector is turned on, an 1.9.3 Remote sample draw electronic self-test is performed. The... -
Page 12: Toxi Plus Accessories
1.11 Toxi Plus accessories (5) MODE button: The on/off "Mode" button is used to turn the instrument on and Toxi Plus detectors are shipped complete off as well as control most day-to-day with sensor, set of three AAA alkaline functions. -
Page 13: Chapter 2 Basic Operation
The current gas reading screen for the gas case is called the MODE button. It is used being measured will then be shown to turn the Toxi Plus on and off, as well as alternating with the sensor identifier screen. to control most other operations of the instrument. -
Page 14: Basic Mode
Since STEL calculations are made using the pre-set alarm levels, visual and audible the most recent fifteen-minute monitoring alarms cease, and normal operation of the interval, it is not possible to compute a toxic instrument resumes. gas STEL until the Toxi Plus has been... -
Page 15: Toxi Plus Batteries
It is not possible to compute a toxic gas TWA until the Toxi Plus has been monitoring for at least one hour. Until the minimum monitoring time has elapsed, the Figure 2.2. -
Page 16: Methods Of Sampling
(3) Loosen and remove the two screws that immediately surrounds the detector. securing the battery compartment cover It is possible to use the Toxi Plus to sample to the instrument case. (The screws remote locations by using a sample draw must be completely removed to detach kit. -
Page 17: Chapter 3 Calibration
Verification of accuracy is a two step 3.1.1.1 Effects of contaminants on procedure. In the first step the Toxi Plus toxic gas sensors is taken to an area where the Biosystems “substance-specific” atmosphere is fresh and the readings are electrochemical used to measure CO, checked. -
Page 18: Biosystems "Co Plus" Dual Purpose Carbon Monoxide / Hydrogen Sulfide Sensor
CO and H S may lead to Cross sensitivity of Toxi Plus toxic inaccurate and potentially dangerous sensors to common interfering gases readings. is listed in Appendix E. -
Page 19: Fresh Air "Zero" Calibration
Fresh air contains 0 PPM toxic gas. must be adjusted using the "span" If the Toxi Plus cannot be taken to an calibration procedures discussed in area where the air is fresh, or if it is not Section 3.4.2 before further use. -
Page 20: Fresh Air "Zero" Auto-Calibration Sequence
A screen will briefly display the Auto-calibration is a two step procedure. message “ZERO MODE”. In the first step the Toxi Plus is taken to → an area where the atmosphere is fresh and a "zero" adjustment is made... -
Page 21: Span" Auto-Calibration Sequence
(2) Attach the cylinder of calibration gas, current gas readings. regulator, short section of tubing and calibration adapter to the Toxi Plus detector. Note: Make sure the calibration Make sure the adaptor and all other fittings have... - Page 22 An information screen is displayed (7) Attach the cylinder of gas, regulator, briefly which verifies that the zero short section of tubing and calibration values have not been changed. The adaptor to the Toxi Plus. Make sure...
- Page 23 “DONE”. dry. The Toxi Plus will then turn itself off. (8) The regulator will automatically begin flowing gas at the correct flow Caution: The “Cal” button must be rate as soon as it is fully screwed in.
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Page 24: Chapter 4 Advanced Functions
(5) With the unit turned off, press and operation of the instrument resumes. hold down the "Alarm" button, It is possible to set Toxi Plus alarms so then press the MODE button to that they "latch." In the latched turn the Toxi Plus back on. -
Page 25: Alarm Latch" Command
4.1.3 Restoring the factory It is possible to set Toxi Plus alarms so default alarm settings that they "latch." In the latched Toxi Plus alarm settings are set at the... -
Page 26: Re-Setting The Calibration Gas Concentration
Biosystems warranty. During auto calibration adjustment the Toxi Plus adjusts the sensitivity of the Use the following procedure to re-set sensor to match the concentration of the calibration gas concentration: the gas used to calibrate the sensor. -
Page 27: Setting The Security Beep Interval
Setting the security beep interval The security beep screen allows the Toxi Plus to be programmed to emit an audible alarm "beep" on a regular basis while the instrument is in operation. This periodic beep serves as a reminder that the instrument is on. -
Page 28: Chapter 5 Trouble Shooting And Repair
To replace a sensor: all battery polarities are correct.) If the Make sure the Toxi Plus is turned off. instrument still fails to turn on, return to Gently unscrew (1/4 turn counter factory for repair. -
Page 29: No Audible Alarm
5.2.6 Keypad buttons don't time. work To insure safe transport please use the Possible causes: original Toxi Plus packing materials, or other packing materials which similarly Not in Basic or Technician mode, microprocessor locked-up or "crashed", protect the instrument and accessories. -
Page 30: Appendices
Toxi Plus design. procedures or equipment. 1. Ceiling level: Airborne toxic substances are typically... - Page 31 Time History Graph Time History Graph Ceiling Ceiling STEL 15 Minutes 2. Time Weighted Average (TWA): The maximum average concentration to which an unprotected worker may be exposed over an eight hour working day. During this time, STEL and ceiling concentration limits may not be exceeded.
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Page 32: Appendix B How To Determine Where Your Alarms Should Be Set
Administration (OSHA) Permissible 1. Toxic gas alarms Exposure Limits for select toxic gases: The Toxi Plus has three separate alarm In the following table "NA" indicates no points for toxic gases: Ceiling, STEL, and value has been assigned by OSHA. -
Page 33: Appendix C How To Calibrate Your Toxi Plus In Contaminated Air
Part Calibration gas Comments Toxi Plus in contaminated air Number mixture Calibration of the Toxi Plus is a two-step 54-9033 Carbon monoxide (CO) process. The first step is to expose the (50 PPM in air) sensors to contaminate-free fresh air and... -
Page 34: Appendix E Cross Sensitivity Data
Toxi Plus portable gas detectors to gases Toxi Plus. Nominal range values indicate other than their target gas. Depending on the gas-level range which the Toxi Plus can the nature of the reaction each gas has detect over extended periods of operation. -
Page 35: Appendix G: 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...
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