Biosystems PhD Ultra Instruction Manual

1 Reference Manual PhD Ultra Multi Gas Detector 651 South Main Street Middletown, CT 06457 USA 860 344-1079, 800 711-6776 FAX 860 344-106

10 Use of these procedures is reserved for authorized personnel. 1.5 Instrument identifiers The PhD Ultra includes two built-in instrument identifier

11 1.6.3.1 Low battery alarm settings for NiCad battery packs The PhD Ultra includes low battery alarms that are activated whenever battery voltage

12 1.6.4.5 Down-scale or negative reading alarms Significantly negative or “down-scale” readings cause the activation of PhD Ultra audible and visua

13 pack is momentarily removed or replaced with another it will be necessary to manually turn the PhD Ultra off if the instrument is not going to be

14 (3) LCD display: A "Supertwist" liquid crystal display (LCD) meter allows display of readings, messages, and other information. (4) Alar

15 Chapter 2 Basic operation 2.1 Operation overview 2.1.1 Turning the PhD Ultra on The large black push-button on the top of the PhD Ultra case is

16 If the instrument is operated in the “Text Only” mode an “OK” message will be displayed as long as an alarm set point has not been exceeded. If t

17 LED alarm lights will flash and the audible alarm will sound during an alarm condition. PhD Ultra alarms are normally self-resetting. When readi

18 average concentration for the most recently completed 15 minutes of operation. Note: For the first 15 minutes after the PhD Ultra is initially

19 2.3.1 NiCad battery pack When the PhD Ultra is operated in the diffusion mode, the rechargeable NiCad battery pack will provide up to 12 hours

2 THE PhD ULTRA PERSONAL PORTABLE GAS DETECTOR HAS BEEN DESIGNED FOR THE DETECTION OF OXYGEN DEFICIENCIES, FLAMMABLE GAS, AND TOXIC VAPOR ACCUMUL

20 consists of two components a slip-in cradle and a 110 VAC “wall cube” type power source. European and Australian chargers may use a different wal

21 (4) Repeat procedure as necessary. Over a period of three or four days of cycling it is frequently possible to restore a significant portion of l

22 CAUTION: Never perform remote sampling with the PhD Ultra without the sample probe assembly. The sample probe handle contains replaceable filte

23 2.4.2.2 Protective “low flow” shut-downs If a protective pump shut-down occurs, the following steps should be taken before the instrument is put

24 new tube, inserting the new tube into the probe handle, and finally replacing and re-tightening the hex-nut. Note: The sample probe must be check

25 Chapter 3 Calibration The PhD Ultra multi-gas detector has been designed for easy calibration. A single control, the on/off mode button, is used

26 Using Biosystems brand calibration gas and regularly verifying accuracy ensures that proper sensitivity is maintained for the life of the sensor.

27 space entry (29 CFR 1910.146) explicitly requires the use of direct reading, substance specific sensors whenever a particular toxic hazard is know

28 Since fresh air contains 20.9 percent oxygen, the fresh air “zero” calibration is the only calibration needed for the oxygen sensor in the PhD Ult

29 (4) Press the mode button three times within two seconds. This will "wake up" the instrument from normal operation, and put it into th

3 Table of Contents INTRODUCTION 7 SIGNAL WORDS 7 WARNINGS 8 CHAPTER 1 PHD ULTRA DESCRIPTION 9 1.1 PHD ULTRA CAPABILITIES 9 1.2 METHODS OF SAM

30 Figure 3.4.2. PhD Ultra calibration setup The regulator will automatically begin to flow calibration gas as soon as it is screwed into the cyl

31 Wait at least 3 minutes after turning the instrument on to allow sensor readings to stabilize fully before initiating any calibration procedures

32 Note: Make sure to use the calibration / sample draw adapter supplied with the hand aspirated sample draw assembly. Do not use the battery opera

33 Chapter 4 PhD Ultra Advanced Functions 4.1 PhD Ultra advanced features overview PhD Ultra microprocessor circuitry makes a number of advanced fe

34 4.2.2 Viewing current or restoring the factory default alarm settings PhD Ultra alarm settings are set very conservatively at the factory. (Se

35 Alarm latch Security beep, Toxic sensor decimal point, Calibration gas settings User ID number. Each of these options is described in greater

36 PhD Ultra alarms are normally self-resetting, which means that the alarms cease as soon as reading drops below the alarm set point. PhD Ultra ala

37 to scroll through the setup options until you reach the combustible sensor screen. (2) Press the “+” or “-“ keys to change the combustible from

38 chosen in the calibration gas setting option, the instrument will display H2S+ and hydrogen sulfide must be used to verify accuracy. Use of the i

39 This screen will be followed by a screen showing the first instrument setup choices. Note: Pressing the mode button at any time cancels the

4 2.2.1 Text Only mode 16 2.2.2 Basic mode 17 2.2.3 Technician mode 17 2.2.3.1 PEAK READINGS 17 2.2.3.2 STEL READINGS 17 2.2.3.3 TWA READI

40 “manual” PhD Ultra setup and download procedures. Consult the Datalink Reference Manual for complete instructions in the use of Datalink software

41 To quit and save the new settings press and hold the “CAL” button. Release the “CAL” button when the instrument instructs you to release it. The

42 4.5.3.6 Exiting the Datalogging Adjust mode When the PhD Ultra is properly configured, press and hold the CAL button to save the changes. You wi

43 will not be retained in the location or user list for future use. This ID feature is available for use while the instrument is operated in any o

44 If a location has not been assigned, the screen will be blank other than showing “ID=” or Follow the directions above for the user name and ent

45 To continue in the passcode setup option, enter the passcode. If this is the first time entering the passcode option or the passcode has been sav

46 Chapter 5 Trouble-shooting and repair Repair procedures may only be performed by authorized personnel! 5.1 Changing PhD Ultra sensors The PhD Ul

47 reading “Too Low” or “Too High” for One-Button Auto-Calibration fresh air adjustment. Once the new sensor has been fresh-air calibrated using the

48 using the procedures discussed in Section 5.2.1. If the instrument still fails to turn on, return to factory for repair. 5.2.2.3 Problem: Sensor

49 (2) Remove the battery pack. (3) Remove the sensor grill cover by removing the three screws on the front of the instrument to access the sensor

5 3.5.2 Span calibration using keypad buttons 31 CHAPTER 4 PHD ULTRA ADVANCED FUNCTIONS 33 4.1 PHD ULTRA ADVANCED FEATURES OVERVIEW 33 4.2 SETT

50 LCD display indicates that the pump is attached and in normal operation.) The sample draw pump includes a unique pressure sensor designed to pro

51 Figure 5.4.3. Cutaway views of 54-05-A0101 motorized pump showing major component assemblies 5.4.2 Specific problems with motorized pump 5.4.2.

52 Appendices Appendix A Toxic gas measurement - Ceilings, TWAs and STELs Many toxic substances are commonly encountered in industry. The presence

53 Appendix B How to determine where to set your alarms 1. Oxygen alarms Two oxygen alarm set points have been provided; one for low concentrations

54 shows the "relative response curves" of the instrument to several different gases. CALIBRATIONSTANDARD1008060402020406080100CALIBRATION

55 responsive to ethanol than to methane, so the readings will be low. Multiplying the instrument reading by the correction factor for ethanol will

56 In the following table "NA" indicates no value has been assigned by OSHA. Note: Customers should be aware that OSHA permissible exposu

57 Appendix D Suggested Calibration Gases Use of non-standard calibration gas and/or calibration kit components when calibrating the PhD Ultra ca

58 Appendix E PhD Ultra Toxic Sensor Cross Sensitivity Data1 The table below lists the cross sensitivity of electrochemical toxic sensors used in B

59 Appendix F Calibration Frequency One of the most common questions that we are asked at Biosystems is: “How often should I calibrate my gas detect

6 5.2.2.2 PROBLEM: UNIT WILL NOT TURN OFF 47 5.2.2.3 PROBLEM: SENSOR READINGS UNSTABLE IN A KNOWN FRESH AIR ENVIRONMENT 48 5.2.2.4 PROBLEM: &quo

60 Appendix G Biosystems Standard Warranty Gas Detection Products General Biosystems LLC (hereafter Biosystems) warrants gas detectors, sensors and a

7 Introduction The PhD Ultra is a personal, portable, microprocessor controlled gas detector that can monitor up to four atmospheric hazards simultan

8 Warnings 1. The PhD Ultra personal, portable gas detector has been designed for the detection of dangerous atmospheric conditions. An alarm cond

9 Chapter 1 PhD Ultra Description 1.1 PhD Ultra capabilities The PhD Ultra gas detector can be configured to meet a wide variety of requirements.