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Summary of Contents for biosystems PhD Lite
- Page 1 Reference Manual PhD Lite Multi Gas Detector 651 South Main Street Middletown, CT 06457 USA (800) 711-6776 (860) 344-1079 Fax (860) 344-1068 http://www.biosystems.com Version 4.11 p/n 13-088 19APR2007...
- Page 3 THE PhD LITE PERSONAL PORTABLE GAS DETECTOR HAS BEEN DESIGNED FOR THE DETECTION OF DEFICIENCIES OF OXYGEN, ACCUMULATIONS OF FLAMMABLE GASES AND VAPORS AND ACCUMULATIONS OF TOXIC VAPORS. 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
Alkaline PhD Lite detectors ------------------------------------------------------------------------------------------------------ 10 1.13.2 NiMH PhD Lite detectors --------------------------------------------------------------------------------------------------------- 10 1.14 PhD Lite kits ------------------------------------------------------------------------------------------------------------------ 10 1.14.1 PhD Lite Confined Space Kits -------------------------------------------------------------------------------------------------- 10 1.14.2 PhD Lite Value Packs ------------------------------------------------------------------------------------------------------------- 10 Chapter 2. Basic operation-------------------------------------------------------------------------------- 11 Operational warnings and cautions ------------------------------------------------------------------------------------- 11 On and off sequences-------------------------------------------------------------------------------------------------------- 11 2.2.1... - Page 5 Sample probe assembly ------------------------------------------------------------------------------------------------------------- 19 2.5.3.1 Changing sample probe filters------------------------------------------------------------------------------------------------ 20 2.5.3.2 Changing sample probe tubes------------------------------------------------------------------------------------------------ 20 Biosystems EEPROM equipped “Smart Sensors” ----------------------------------------------------------------- 20 2.6.1 Identification of type of sensor by instrument ----------------------------------------------------------------------------------- 20 2.6.2 Other information stored with the sensor EEPROM --------------------------------------------------------------------------- 20 2.6.3...
- Page 6 Shortcuts to the manual fresh air calibration procedures --------------------------------------------------------------- 41 4.5.1.1.1 Shortcut to fresh air calibration while in normal operation----------------------------------------------------------- 41 4.5.1.1.2 Shortcut to Main Menu while turning the PhD Lite on ---------------------------------------------------------------- 42 4.5.2 Manual span calibration procedures ---------------------------------------------------------------------------------------------- 42 Functional (bump) test------------------------------------------------------------------------------------------------------- 42 The Calibration Menu -------------------------------------------------------------------------------------------------------- 43 4.7.1...
- Page 7 Appendix E Biosystems Standard Warranty Gas Detection Products -------------------------------------------- 66 Signal Words The following signal words, as defined by ANSI Z535.4-1998, are used in the PhD Lite Reference Manual. indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
- Page 8 Do not reset the calibration gas concentration unless you are using a calibration gas concentration that differs from the one that is normally supplied by Biosystems for use in calibrating the PhD Lite. Customers are strongly urged to use only Biosystems calibration materials when calibrating the PhD Lite. Use of non-standard calibration gas and/or calibration kit components can lead to dangerously inaccurate readings and may void the standard Biosystems warranty.
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Page 9: Chapter 1. Description
CO and PhD Lite capabilities The PhD Lite gas detector can be configured to meet a The “Duo-Tox” sensor is a dual channel electrochemical wide variety of requirements. This chapter provides an sensor designed to simultaneously detect both carbon overview of many of the features of the PhD Lite. -
Page 10: Atmospheric Hazard Alarms
Removing the alkaline batteries from the instrument The PhD Lite toxic gas channel will go into alarm if a in a hazardous location may impair intrinsic safety. sensor is exposed to a concentration of gas that exceeds its established range. -
Page 11: Other Alarms And Special Microprocessor Features
UL Class ll, Division 1, Groups E, F, and G retrieval. If the data stored in a PhD Lite equipped with a black box CSA Class I, Division 1, Groups A, B, C, and D data recorder is needed, simply call Biosystems’... -
Page 12: Phd Lite Design Components
PhD Lite kits (4) Alarm light / IrDA port: Two bright red LED (light- PhD Lite detectors may also be purchased as part of a complete kit that includes calibration gas, calibration gas emitting diode) alarm lights provide a visual indication regulator and a hard-shell carrying case. -
Page 13: Chapter 2. Basic Operation
Biosystems Chapter 2. Basic operation for use in calibrating the PhD Lite. This chapter will cover how to use the PhD Lite for safe work in potentially hazardous atmospheres. Customers are strongly urged to use only Biosystems calibration materials when 2.1 Operational warnings and cautions... -
Page 14: Other Start-Up Screens
During the self-test sequence, the display backlight will momentarily turn on, the visual LED alarm light will flash, and the audible alarm will sound. The PhD Lite Current gas level screen in Text Only mode, no alarms will also determine which “Smart Sensors” are currently present. -
Page 15: Warning Sensor Needs Cal
2.2.2 Shut-down sequence MENU To turn the PhD Lite off, hold the MODE button down Regardless of mode selection, the PhD Lite remembers until the “Release Button” message appears. After the the peak readings of all gases measured, and is... -
Page 16: Basic Mode
To reset the alarms after the atmospheric hazard has cleared, simply Reset Peaks? press the MODE button. If the PhD Lite’s alarm latch is disabled and the alarm condition is no longer present, the instrument automatically returns to normal... -
Page 17: Stel
15 minutes of operation. 01:15 15:08 EXIT Note: For the first 15 minutes after the PhD Lite is 3.9V MENU initially turned on the STEL reading is a projected Press the down navigation arrow once to highlight value. -
Page 18: Batteries
The NiMH battery pack is contained Note: Changing the operating mode or otherwise inside of the PhD Lite and should only be replaced by reprogramming the PhD Lite is reserved for appropriately trained personnel. -
Page 19: Low Battery Alarms
2.4.3 Low battery alarms the PhD Lite. A manual sample draw kit comes as a Note: The voltage figures given below are for PhD standard accessory with every PhD Lite and includes a Lite instruments with firmware version 3.18 and may... -
Page 20: Motorized Sample Draw Pump
Figure 2.5.2.1. Figure 2.5.1.2. PhD Lite with hand-aspirated sample draw kit attached Slide the pump onto the PhD Lite as shown in Figure 2.5.2.2. CAUTION: Hand aspirated remote sampling only Make sure the pump is securely attached. Tighten provides continuous gas readings for the area in the captive screw. -
Page 21: Protective "Low Flow" Shut-Downs
If a protective pump shut-down occurs, the following To resume diffusion monitoring, simply disconnect the steps should be taken before the instrument is put back pump assembly from the PhD Lite. The audible and into use: visual alarms will be activated and the LCD will display the message “Pump Disconnect”. -
Page 22: Changing Sample Probe Filters
Even if the change is only to replace one sensor with shown in Figure 2.5.3.) to provide access to the filters. another of the same kind, the PhD Lite will still note the The particulate filter is held in place by means of a clear change in serial numbers of the sensors installed, and filter cup. -
Page 23: Missing Sensor
2.6.4 Missing sensor assembly with the adhesive side down. The PhD Lite is able to recognize when a sensor is Remount sensor cover and secure with three removed or becomes disconnected while the instrument philips screws. DO NOT overtighten. -
Page 24: Chapter 3. Advanced Functions
The Main Menu provides access to all user-configurable options of the PhD Lite. 3.2.2 Custom alarm settings PhD Lite gas alarms are user-adjustable and may set 3.1.1 Entering the Main Menu anywhere within the range of the sensor channel. Turn the instrument on and wait until the gas readings screen appears. -
Page 25: Alarm And Ok Latches
3.2.3.1 Alarm latch settings If an alarm condition occurs and clears while the PhD When the PhD Lite’s alarm latch is enabled, the audible Lite is operated in text-only mode with the OK latch and visible alarms will continue to sound after the disabled, the PhD Lite will again display OK for the atmospheric hazard has cleared. -
Page 26: Default Alarm Settings
3.2.4 Default alarm settings PhD Lite alarm settings are set at the factory and may 3.2.5.1 Enable/disable temperature alarms be restored at any time by performing the following Enter the Alarm Menu as described above in procedure. -
Page 27: Warning Alarms
LEL or toxic sensor will then be 3.2.6 Warning alarms. shown. The PhD Lite includes adjustable warning alarms for the Note: The warning alarm must be enabled for the toxic and combustible gas sensor channels that can be warning alarm level to be shown. Section 3.2.6.2 enabled or disabled according to the needs of the user. -
Page 28: Disabling The Timeout Interval
Use the up and down 3.4.2 User Modes navigation arrows to change the interval setting. The PhD Lite offers a choice of four modes of operation: "Text Only”, "Basic”, “Basic/Peak” and "Technician”. TIMEOUT ADJUST Mode selection should be based on how much... -
Page 29: Basic Mode
LED alarm lights flash, and the audible alarm sounds. STEL screen in Technician mode. Note: For the first 15 minutes after the PhD Lite is initially turned on the STEL reading is a projected 20.9 value. -
Page 30: Average Readings
Note: It is not possible to calculate a toxic gas TWA 3.4.3 Security beep reading until the PhD Lite has been operating for 15 The security beep is an audible alarm that “beeps” on a minutes. For the first 15 minutes after start-up, the regular basis while the PhD Lite is in normal operation. -
Page 31: Passcode
To enable or disable the passcode: Press the MODE button to enter the new passcode. The PhD Lite will then proceed to the verification Enter the passcode subdirectory of the Options screen. The new passcode will have to be re- Menu as discussed in section 3.4.4. -
Page 32: Language
Follow the instructions in section 3.4.1 to reach the Options Menu and use the navigation arrows to 3.4.5 Language highlight DECIMAL. The PhD Lite can be set to display messages and readings in a variety of languages. The languages USER_MODE SEC_BEEP PASSCODE... -
Page 33: The Screen Menu
Off after 20s compartment. EXIT The PhD Lite’s backlight may be configured to either be The Screen Menu “ON Always” or to automatically turn off after an interval The Screen Menu provides access to the PhD Lite’s of between 5 and 90 seconds. -
Page 34: Adjusting The Backlight Interval
Inverse (black background with white letters). The Invert text color option is a hidden function that is not Backlight shown on the display of the PhD Lite. Off after 20s EXIT The up and down navigation arrows may then be 20.9... -
Page 35: Entering The View Menu
Press the MODE button to return to the Main Menu. Press the MODE button at any time to return to the Main Menu. The Time Menu For PhD Lite instruments that do not include the 3.6.3 View battery voltage datalogger upgrade, the Time Menu provides access to date and time-related functions. -
Page 36: Time And Date Settings
3.7.3 Service date settings NO CANCEL The PhD Lite can be programmed to automatically Press the MODE button with YES highlighted to remind the user to service the sensors in the unit. To confirm the new sensor service due dates. - Page 37 Press the MODE button. The following screen will then be shown in succession. SENSOR SERVICE EXPIRATION DATES NEXT O SERVICE NEXT 28 OCT 2003 EXIT To advance to another sensor, press the MODE button with NEXT highlighted. NEXT O SERVICE NEXT 28 OCT 2003 EXIT...
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Page 38: Chapter 4. Calibration
Verification of accuracy is a two step procedure. principle, so the kinds of conditions that affect the Step one is to take the PhD Lite to an area where the accuracy of the sensors vary from one type of sensor to atmosphere is known to be fresh and check the the next. -
Page 39: Effects Of High Concentrations Of Combustible Gas On The Combustible Sensor
As described above, combustible gas sensors may indicate a hazardous combustible gas concentration become desensitized if exposed to certain substances. that exceeds the PhD Lite’s zero to 100 percent LEL detection range. Failure to leave the area In some cases a desensitized combustible sensor may... -
Page 40: Using One Sensor To Monitor For Carbon Monoxide And Hydrogen Sulfide
S. When the The 54-25-08 Cl non-specific sensor is cross sensitive calibration gas value is set to CO, the PhD Lite will show to ClO at a rate of 3.1 to 1. This means that when a CO+ on the current gas readings screen. Alternately,... -
Page 41: Automatic Calibration
4.4 Automatic calibration Zero Calibration Biosystems one-button auto-calibration procedure may Please Wait be used to calibrate the PhD Lite at any time during normal operation in all modes except Text-Only Mode. Zero Calibration Auto-calibration is a two-step procedure. In the first... -
Page 42: Automatic Span Calibration With More Than One Gas Cylinder
Figure 4.4.2 Typical calibration set-up. Wait at least 3 minutes after The PhD Lite automatically recognizes the type of gas turning the instrument on to allow sensor readings supplied and displays the current reading for each to stabilize fully before initiating any calibration sensor that may be calibrated using the current gas procedures. -
Page 43: Manual Calibration
At the current gas readings screen in Basic, Basic/Peak 4.5 Manual calibration or Technician mode, press and hold the left navigation arrow for six seconds until the PhD Lite instructs you to It is possible to calibrate the PhD Lite manually by using release it. -
Page 44: Shortcut To Main Menu While Turning The Phd Lite On
IQ LINK EXIT Functional (bump) test Use the navigation arrows to highlight SPAN CAL The accuracy of the PhD Lite may be verified at any and press the MODE button. time by a simple functional (bump) test. Span-Cal To perform a functional (bump) test, do the following:... -
Page 45: The Calibration Menu
FRESH_AIR SPAN_CAL 4.7.2.1 Changing the combustible gas readout GAS_VALUES REMIND IQ LINK EXIT from LEL to CH CAL LOCK The PhD Lite may be configured to show combustible gas readings in terms of percent of LEL (Lower... -
Page 46: Changing The Direct Reading Setting Of The Co Plus Sensor From Co To H 2 S
(LEL or ). Once the appropriate setting is shown, press With the PhD Lite configured to read in terms of percent the right navigation arrow once to highlight the by volume of methane (CH... -
Page 47: Calibration Reminder
CO or H calibration gas mixtures containing both carbon monoxide and hydrogen sulfide when calibrating a CALIBRATION GAS PhD Lite with a CO Plus sensor installed. 50.0ppm Calibration of the CO Plus sensor with multi- EXIT component calibration gas mixtures containing both... -
Page 48: Disabling The Calibration Reminder
30 days. If the calibration is past due Once the appropriate sensor is reached, use the when the PhD Lite is turned on, the instrument will down navigation arrow to see the most recent span display the message “Calibration Due” and the or zero calibration for the given sensor. -
Page 49: Last Calibration
With the IQ Link function enabled the PhD Lite will automatically initiate IrDA communications following a calibration. The instrument is then placed in front of the PC’s IrDA port and the data is downloaded into the IQ Database. -
Page 50: Chapter 5. Record Keeping
ID information. The user simply touches the recent calibration dates and settings, types of sensors Touch ID button to the ID reader on the PhD Lite to currently installed, sensor serial numbers, warranty enter a user or location setting into the session memory. -
Page 51: Iq System
There is a finite amount of memory storage available in also e-mail capable and can automatically notify you the PhD Lite. Once the memory is “full”, the PhD Lite when an instrument fails calibration. will begin to write the new data over the oldest data. In Call Biosystems for more information on the IQ this way, the newest data is always conserved. -
Page 52: Enable/Disable Datalogger
NO CANCEL As discussed above, there is a finite amount of memory storage in the PhD Lite. As the sampling interval is 4. Press MODE with YES highlighted to save the new either lengthened or shortened, so is the time-estimated sampling interval setting. -
Page 53: Sessions
5.4.5.1 User and location lists session that is displayed. The PhD Lite is capable of storing up to 15 different user ID’s and 15 different location ID’s. User and 8:02-17:23 location lists may be manually entered into the PhD 13 OCT 2003 Lite’s memory through the USER_LIST and LOC_LIST... -
Page 54: User And Location Id's
Note: The user and location ID is not retained if the Press the MODE button once. The select character PhD Lite is turned off. The user and location ID screen will then be shown. must be re-entered or selected from the list prior to... -
Page 55: Touch Id Option
User ID memory “Touch Memory Button” to the “Touch Memory Module” The User ID memory includes the individual’s name, on the back of PhD Lite while the instrument is in normal language preference and operating mode preference. gas detection mode. -
Page 56: Clear Id Button
Press the Touch ID button to the Touch ID reader on the front of the PhD Lite. TOUCH ID FOUND WRITING COMPLETED The instrument will program the current user ID setting onto the Touch ID button and return to the Main Menu upon completion 5.4.5.3.1.3... -
Page 57: Chapter 6. Basic Maintenance
New sensors must be allowed a stabilizing time – with detector powered off and with functional At instrument start up, the PhD Lite is designed to batteries or battery pack installed, according to the recognize the “Smart Sensors” that are installed and following schedule. -
Page 58: New Sensor Releases
6.1.3.1 Can’t make automatic fresh air/zero Motorized pump calibration adjustment A motorized sample pump is available for the PhD Lite Possible causes and solutions for remote sampling. The motorized pump is powered by the PhD Lite battery. When the pump is attached... -
Page 59: Pump Performance
If there is insufficient pump flow, held in a vertical position. If the probe is held the pump test will fail and the PhD Lite will display the horizontally or at a low angle while immersed in a fluid, following message. -
Page 60: Low Flow Pump Failure
Pump Low Flow Remove Blockage Pump Low Flow MODE=Acknowledge Figure 6.2.2 Internal PhD Lite pump diagram In most cases, the cause of the blockage is easily Remove the four bottom screws from the pump recognized. Remove the blockage, reattach the hose... -
Page 61: Can't Resume Normal Operation After A "Low Flow" Shut Down
Solution(s): Turn off PhD Lite, remove pump, disconnect sample probe an hose assembly, allow any trapped fluids to drain; replace filters as necessary, examine hose to make sure there are no kinks blocking normal flow. -
Page 62: Firmware Upgrade From The Biosystems Website
Firmware upgrade from the Biosystems website The instrument firmware for the PhD Lite may be upgraded directly from Biosystems website. The Flash download is a two-step download process that will prepare your PC to update the flash program of your PhD Lite. -
Page 63: Exploded View And Parts List
10-334 Upper Alkaline Battery housing 10-335 Lower Alkaline Battery housing 35-0240 Alkaline Main Board Phd 35-0241 Lite NiMH Main Board Phd Lite 34-046 Gasket Main Housing 35-0172 Lower Case Assembly 17-036 O-ring for Main Housing screws 05-1117 Main Housing Screw... -
Page 64: Appendices
Appendices Appendix A Toxic gas measurement - Ceilings, TWAs and STELs Time History Graph Many toxic substances are commonly encountered in industry. The Ceiling presence of toxic substances may be due to materials being stored or used, the work being performed, or may be generated by natural processes. -
Page 65: Appendix B Phd Lite Sensor Ranges
Appendix B PhD Lite sensor ranges Part No. Description Range Resolution 54-25-80 Combustible gas 0 – 100% LEL 1% LEL 54-25-90 Oxygen 0 – 30%/Vol. 0.1% 54-25-01 Carbon monoxide 0 – 1000 PPM 1 PPM CO: 0 – 1000 PPM... -
Page 66: Appendix C Sensor Cross-Sensitivity Chart
Sensor Cross-Sensitivity Chart The table below provides the cross-sensitivity response of the PhD Lite toxic gas sensors to common interference gases. The values are expressed as a percentage of the primary sensitivity, or the reading of the sensor when exposed to 100ppm of the interfering gas at 20ºC. These values are approximate. The actual values depend on the age and condition of the sensor. -
Page 67: Appendix D Calibration Frequency
We are often asked whether there are One of the most common questions accuracy before further use. any circumstances in which the period that we are asked at Biosystems is: between accuracy checks may be Any changes in the environment “How often should I calibrate my lengthened. -
Page 68: Appendix E Biosystems Standard Warranty Gas Detection Products
Instrument’s 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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