Humboldt HS-5001EZ Product Manual
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Humboldt HS-5001EZ Product Manual

Moisture-density gauge
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HS-5001EZ
HS-5001EZ_MAN_08.12
Moisture-Density Gauge

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  • Page 1 HS-5001EZ HS-5001EZ_MAN_08.12 Moisture-Density Gauge...
  • Page 3 The programmable read only memory integrated circuit package contained in this equipment and covered with a copyright notice label contains pro- prietary and confidential software which is the sole property of HUMBOLDT SCIENTIFIC, INC. It is licensed for use by the original purchaser of this equipment for a period of 99 years.

  • Page 4: Table Of Contents

    Contents General and Specifications Introduction Definitions 1.2.1 Precision ....... . . 2 1.2.2 Chemical Error .
  • Page 5 Entry of Pre Test Data ......17 3.3.1 Maximum Density ......17 3.3.2 Moisture Correction Factor (KVAL) .
  • Page 6 Preventive Maintenance Storage Environment Exterior Cleaning Sliding Shield Cavity Performing A Wipe Test Statistical Stability Test Field Service Mechanical Disassembly / Assembly 6.1.1 Bottom Plate and Shield ....41 6.1.2 Source Rod .
  • Page 7 Reporting of Loss or Incident Radiation Profile Warranty Warranty...

  • Page 8: General And Specifications

    THIS INSTRUMENT CONTAINS RADIOACTIVE MATERIALS, WHICH MAY BE HAZARDOUS IF IMPROPERLY USED. HUMBOLDT recommends that users participate in a radiation safety and applications training program given by competent instructors. Where this is not possible or impractical, users should study the Radiation Safety Manual supplied with this instrument and carefully read this Instruction Manual to become familiar with the safe operation of the instrument.

  • Page 9: Definitions

    Proper use of this equipment will have little effect on the total exposure of a typical operator to ionizing radiation. However, a potential danger does exist and any questions regarding this danger should be addressed to the Radiation Safety Officer within the owner's organization or other competent persons.

  • Page 10: Depth Of Measurement

    1.2.4 Depth of Measurement The depth of measurement defined as that depth above which 95% of measurement occurs. The balance of (5%) is determined by material below stated depth. This is an important parameter of a Backscatter type gauge since a deeper depth of measurement reduces the error caused by surface voids.

  • Page 11: Moisture Measurement

    1.3.2 Moisture Measurement Moisture at 160 kg/m³ (10 pcf) SLOW NORMAL FAST 4 min 1 min 15 sec Precision kg/m³ (pcf) ± 2 (0.13) ± 4 (0.25) ± 8 (0.5) Surface Error kg/m³ (pcf) - 4 (0.25) - 4 (0.25) - 4 (0.25) 100 to 200 100 to 200...

  • Page 12: Electrical Specifications

    Neutron Source HSI 2200067 Amount and Type of 40 mCi (nom) americium-241:be Neutron Yield 90 knps (nom) Special Form Registration USA/0632/S-96, CZ/1009/S ANSI and ISO Class E66545 Surface Dose Rate 18.7 mrem/hour maximum Transit Case DOT 7A, Type A, Yellow II Label, 0.2 TI A Radioactive or By product Material License is required from an Agreement State or The US Nuclear Regulatory Commission for possession in the United...

  • Page 13: Gauge

    Post and Frames: Machined 6061-T6 Aluminum, anodized for anticorrosion. Top Shell: Injection Molded Noryl Bearing: Relieved bronze with neoprene seals. Screws / fittings: Stainless/brass, no steel. Operating 10 to 70 °C, 175 °C Test Material Surface. Temperature: Storage Temperature -55 to 85 °C Humidity: 98% without condensation, Rain proof Construction Vibration:...

  • Page 14: Equipment Description

    Radiation Safety Manual Source and Case Certification Wipe Test Materials Zippered Accessory Case Rod Guide/Scraper Plate Drill Rod Four Pound Hammer Rod Extraction Tool 2. EQUIPMENT DESCRIPTION Before using this equipment, the operator should be thoroughly familiar with the Radiation Safety Manual supplied with the instrument. If possible, a suitable course in the safe use and field application should be attended.

  • Page 15: Drill Rod

    2.1.2 Drill Rod The drill rod is a medium hardness tough steel and has a captive head to allow it to be driven into soil or soil aggregates so that the source can be placed into the material for a direct transmission density measurement. The rod is marked so that the depth can be controlled by reference to the top of the scraper plate handle.

  • Page 16: Transit Case

    2.2.3 Gauge HS-5001EZ The HS-5001EZ-type gauge utilizes an alphanumeric LCD touch screen, state of the art electronic circuits to generate the necessary timing circuit, and power supplies. The processor automatically compensates for the abnormal gamma attenuation coefficient for hydrogen as compared to the values of higher atomic numbered materials found in soils.

  • Page 18: Auto Depth Indication

    2.2.3.1 Auto Depth Indication The gauge will indicate the position of the handle (source location). The method used is totally enclosed and not subject to wear by abrasive materials on a job site. It should be as reliable as any other part of the gauge and not require periodic replacement.
  • Page 19 *DATA 06/06/98 *SETUP 4:00:00 *ENGINEERING DEPTH=SAF Function Keys The H5001EZ features Four function keys, F1 through F4, for each one of the display lines. With few exceptions, each key is assigned a unique task specific to its assigned menu. For simplicity, tasks common to each menu will be represented, when and where possible, consistently in sublevel menus with matching graphical representations and locations.

  • Page 20: Field Operation

    moisture (M), percent moisture (%M), percent proctor (%PR) are displayed, if the gauge is in the soil mode. Wet density (WD) or total density, % Marshall (%MA) if in the asphalt mode. Any of the other parameters may be successively obtained by pressing the appropriate key. 3.
  • Page 21 To begin the standard counts procedure from the main menu display, or from any other menus press: The display will show: DS = XXXX MM / DD / YY MS = XXX MM : HH * TAKE NEW STD * USE CURRENT STD Where DS and MS are the values of last density and moisture standard taken at date MM/DD/YY and time MM:HH.
  • Page 22 DS = XXXX % ERR =XX.X MS = XXX % ERR =XX.X * REJECT & TAKE NEW STD * ACCEPT & TAKE NEW STD There are two methods of making the Standard Reference Count. The quickest is using the above procedure, which takes four minutes. The four minutes counter indicates the amount of time remaining before the end of the count.
  • Page 23 Press, The display will show and the “4MIN” flashing. MEAS =FAST/NORM/SLOW =4MIN/16MIN TYPE =ASPH/SOIL/THIN DEPTH =AUTO/MANUAL Press, The display will show and the “16MIN” flashing. MEAS =FAST/NORM/SLOW =4MIN/16MIN TYPE =ASPH/SOIL/THIN DEPTH =AUTO/MANUAL Press, The display will show: DS = XXXX MM / DD / YY MS = XXX MM : HH...

  • Page 24: Entry Of Pre Test Data

    While not required to make simple moisture and density measurements, certain parameters of the material must be entered to utilize the full potential of the HS-5001EZ Gauge. 3.3.1 Maximum Density For any type of material, maximum density is required in order to calculate the percent compaction.

  • Page 25: Specific Gravity (Spg)

    he computed percent water by roughly 1%. Typical values are between -0.10 and +0.02. If unknown, always set the value to 0.0. To set a new value, press MAIN MENU, F2 (SETUP), F4 (SET TARGETS), F2. The KVAL value then is flashing, Press F3 to INCREASE or F4 to DECREASE the value.

  • Page 26: Site Selection

    To set a new value, press MAIN MENU, F2 (SETUP), F4 (SET TARGETS), F1. The LWD value then is flashing, Press F3 to INCREASE or F4 to DECREASE the value. 3.4 Site Selection In general, all measurement should be made as soon as possible after the site has been compacted.

  • Page 27: Positioning The Gauge

    If the line is used to make a light mark is drawn around the Scraper Plate while it is placed over the hole, it will be easier to locate the Gauge such that the source rod will extend into the hole without difficulty. 3.6 Positioning the Gauge Carefully place the Gauge over the prepared site.

  • Page 28: Measurement Type Selection

    3.7.2 Measurement Type Selection Before a measurement is made, material under test must be selected i.e. ASPHALT / SOIL / THIN LAYER. To select measurement type press “MAIN MENU”, F2 (*SETUP), F2 (*SET MEASURE MODES), MEAS =FAST/NORM/SLOW =4MIN/16MIN TYPE =ASPH/SOIL/THIN DEPTH =AUTO/MANUAL Pressing F3 will toggle the measurement type selection between Asphalt, Soil, and Thin Layer mode.

  • Page 29: Asphalt Thin Layer Measurements

    DC = XXXX.X DS = XXXX.X MC = XXX.X MS = XXX.X VR = XX.X %AV = XX.X * LAST MDEPTH = BAC Move the handle back to the SAFE position and note that the display did not change. It is not necessary to leave the source in the measurement position (exposed) while calculations are made.
  • Page 30 Set the mode to THIN as described above in 3.7.2. Press MEAS key TAKING MEASUREMENT TIME REMAINING 1:00 DC = XXXX.X MC = XXX.X THICK = 1.0 After counting down from 1:00 the wet density of top layer, % Marshall and the approximate asphalt content will appear in the display.
  • Page 31 Thickness Relative inch Response 0.000 0.490 0.778 0.912 0.960 0.985 0.998 1.000 Below 100mm (4 inches) the gauge is relatively unaffected by any change in density. In fact, a large change in density below 75mm (3 inches) has very little effect. There is always a question of when to use the nomograph method.

  • Page 32: Soil Measurements

    While the table may seem confusing it simply states that, for example, one should correct for a mat thickness of 37.5mm (1.5 inches) only when the difference between the top layer and bottom layer densities is 6% or more. If the mat is 50mm (2.0 inches), then use the nomograph when the density difference is 10% or more.

  • Page 33: Soil Measurements In Trenches

    Move the handle back to the SAFE position and note that the display did not change. It is not necessary to leave the source in the measurement position (exposed) while calculations are made. So long as measurement data is present in the active registers, the handle position in which the data was taken remains in the display.

  • Page 34: Processing The Results

    Remove the gauge from the Reference Standard, place the gauge on the site to be tested (always use direction transmission in a trench) and make an otherwise normal soil measurement. The measurement result has been adjusted to compensate for the water in the wall of the trench. 3.8 Processing The Results The WET DENSITY is obtained using the following equation: CR = Ae...

  • Page 35: Compaction Control

    3.8.1 Compaction Control Generally, it is desirable to obtain compaction as a percentage of a maximum density based on a laboratory Proctor density for soils, or as a percentage of the maximum density based on a laboratory Marshall density, or other requirements for asphaltic concrete. If the desired maximum density has been placed in the D register by using the “MAX D”...

  • Page 36: Menus

    4 Menus 4.1 Data Menus The Data function key F1 accessible from the main menu. This key will allow the users to view current measurement calculated results, standard or statistical counts, setup a project for the measurement data and saving the measurement data.

  • Page 37: Projects Setup

    LAST 4 STD RESULTS DS 1 = XXXX DS 2 = XXXX DS 3 = XXXX DS 4 = XXXX * NEXT DD= XXXX.X M = XX.X WD= XXXX.X %M = XX.X % PR= XXX.X MAXD = XXX.X * NEXT MDEPTH = BAC LAST 4 STD RESULTS MS 1 = XXXX MS 2 = XXXX...

  • Page 38: Edit / Store Data

    4.1.3.1 Edit / Store Data Follow the steps as outlined in 4.1.3. Now to identify a project Press F1 and the following screen will appear. PROJECT 0.0000001 STA 000+00 TO 000+00 * INCREASE * NEXT SCREEN OFFSET ◊ R 0 0 STA 000+00 LANE E B * INCREASE * STORE...

  • Page 39: Print Data Report

    4.1.3.3 Print Data Report Follow the steps as outlined in 4.1.3, then F3 Connect IR adapter to Gauge and PC. Start PC program. * START IR DOWNLOAD IR DOWNLINK PROGRESS PLEASE WAIT FOR IR DOWNLOAD TO COMPLETE 4.1.3.4 Erase Stored Data Follow the steps as outlined in 4.1.3, then F4 WARNING : ERASING ALL PROJECT DATA !

  • Page 40: Time Setup

    *SETUP 2 *SET MEASURE MODES *SET TRNCH COR. *SET TARGETS * SET DATE *SET TIME *UNITS = PCF / SI DATE = MM / DD / YY * INCREASE * DECREASE * SAVE The MM value will be flashing, Press F2 to INCREASE or press F3 to DECREASE the value then presses F1 to advance for DD value setup and so on for YY value.

  • Page 41: Units Setup

    The HH value will be flashing, Press F2 to INCREASE or press F3 to DECREASE the value then presses F1 to advance for the MM value setup and so on for the SS and AM or PM values. After the date has been set, press F4 to save the new time, the display will return to main menu display.

  • Page 42: Trench Correction Setup

    Typically NORM, 4 MIN, SOIL, AUTO values will be flashing. Pressing F1 will change the length of measurement time (FAST = 0.25 min, NORM = 1.0 min and SLOW = 4.0 min). Pressing F2 will change the length of Gauge standardization time (STD = 4.0 min and STAT = 16.0 min).

  • Page 43: Calibration

    There are nine sets (CAL1 through CAL9) available and each set contains a separate adjustment value for backscatter and direct transmission densities. Please contact Humboldt Scientific for further information. ENTER PASSWORD __ + __ + __ + __ + __...

  • Page 44: Reset Master Guage

    4.3.2 Reset Master Gauge This procedure will completely clear everything from gauge memory (other than calibration adjustments) and reload the data from the factory calibration. It is not necessary to run this procedure except following a gauge calibration. 4.3.3 Manufactures Information SER NUM = XXXXX CAL DATE...

  • Page 45: Exterior Cleaning

    5.2 Exterior Cleaning The Gauge is going to get soiled during use. While this causes no harm, removing loose material at the end of each working day will prolong the cosmetic appearance. Occasionally it would help if the exterior were cleaned with an industrial grade detergent and water.

  • Page 46: Performing A Wipe Test

    The materials to perform this test have been supplied with the gauge in kit 5200177 and additional materials may be obtained from Humboldt Scientific Inc. or other venders of these kits. Ethanol (ethyl alcohol) at 95% purity may be obtained from a local beverage store under the trade name "Everclear".

  • Page 47: Statistical Stability Test

    5.5 Statistical Stability Test This test is a simple method of testing the short-term stability of the detectors and electronic counting circuits. The basis for it is explained in section 7.3 covering radiation statistics. Radioactive decay is a binary process (an atom decays or it does not). The average rate of decay determines the half life (the time for half of the material to disintegrate) of the material.

  • Page 48: Field Service

    R < 0.5 or > 1.5 Bad Others— Try Again 6 Field Service The HS-5001EZ is designed for reliability and field service is kept to a minimum. Little, if any, test equipment is required and the only tools necessary are:...

  • Page 49: Index Rod

    6.1.4 Index Rod The Index Rod may be removed without removing the source rod. Remove the lift cap as described in 6.1.2, lift the handle off the Index Rod and rotate it out of the way. MAY REQUIRE FACTORY RE-CALIBRATION. Loosen the Index Lock Nut (200052) and unscrew the Index Rod (200668.

  • Page 50: Base Module

    out of the center hole. The seals will be destroyed but be careful not to damage the Source Rod Bearing (200136). When replacing the seals, they must be pushed or lightly tapped in place with a wood or soft metal dowel to prevent damage.

  • Page 51: High Voltage Power Supply Module (200088)

    The Factory or Authorized Service Facility may repair or replace the module. No re-calibration is necessary; however, the Gauge calibration is stored in a memory module that must stay with the same Gauge or re-calibration will be necessary. 6.3.2 Base Plane Board (200768) This board, into which all of the small modules are plugged, has no active components, only interconnects between other components.

  • Page 52: Moisture Amplifier Module (200086)

    each of the detectors. They should be set, using an oscilloscope, to produce average 500 millivolt negative pulses at test point DTP on the base circuit board. This pulse height is not very critical and if the adjustments are set at mid range, and the STAT test indicates stability, the setting is acceptable without the availability of the oscilloscope.

  • Page 53: Parts List

    200127 Rod Extractor Tool 200145 Hammer 000176 Transit Case Assembly 200681 Reference Standard 200122 Gauge Padlock 000177 Instruction Manual, HS-5001EZ 200688 Radiation Safety Manual 200121 Radioactive Source Certificate 200173 Wipe Test Materials (Kit) 200177 Leak Test Certificates 200174 Filter Paper...
  • Page 54 Panel Gasket 200351 Panel Nut, 8 32 (4) 200163 Washer, Internal Tooth ¼”, SS (4) 001037 Radioactive Material Label 200134 Hex Socket Head SS Cap Screw, 8 32 x 1/2 (6) 001008 Flat SS Washer, #8 (6) 001030 Drive Screws #00 001023 Processor Module (Blank EPROM) 200682...

  • Page 55: Service Hints

    Lock Washer, SS internal Tooth, #6 001006 Moisture Amplifier Module 200086 Phillips Head SS Screw, 6 32 x ¾ 001004 Lock Washer, SS internal Tooth, #6 001006 Ground Spring 200162 Phillips Head SS Screw, 4 40 x ¼ 001054 Lock Washer, SS Internal Tooth #4 001018 Detector, Gamma (2) 200035...

  • Page 56: Calibration

    6.7 Calibration The Calibration of this instrument will be valid for a minimum of one year and probably much longer if reasonable care is taken to prevent the application of heavy shock loads to the Gauge base. Users are advised to establish a location on a laboratory floor or other reference and measure this location on receipt of the equipment.
  • Page 57 When gammas of this energy pass through materials, either of two interactions may occur. At the original energy of 0.662 MeV, the primary effect is collision with the loosely bound electrons of the material with a scattering (change in direction) and transfer of energy. As scattering continues and the energy decreases, photoelectric absorption occurs in which the gamma transfers all of its energy to a more tightly bound electron and the electron leaves the atom which may result in some X radiation.
  • Page 58 The table below indicates the relative percentage for the most predominant elements in the crust of the earth along with their values of Z/A and u/p. Element Percent u/p(0.662 MeV) Oxygen 44.6 0.500 0.0806 Silicon 27.7 0.498 0.0805 Aluminum 0.482 0.0777 Iron 0.466...
  • Page 59 A - C B Average DENSITY Backscatter Gauge Calibration Fortunately the most common materials in the surface layers are oxygen, silicon and calcium in the form of oxides or carbonates. If this were not the case, gamma density gauges would not be practical for use. These materials all have a u/p between 0.0805 and 0.0809.
  • Page 60 Geiger Mueller detectors are used in the system along with a gamma filter to select the desired energy spectrum. The filter limits the low energy response and the detector design limits the upper energy, which can be detected. The available energy at the filter is a function of the initial energy of the gamma radiation from the source and the path length through the material.

  • Page 61: Moisture Measurement By Neutron Radiation

    The direct transmission mode involves placing the source and detectors across the material (opposite sides) so that the gamma path is directly through the material. This is the most accurate method due to the higher average energy and the method produces true average densities. The backscatter method involves placing the source and detectors on the same surface of the material.
  • Page 62 Element Percent Collisions Absorption Hydrogen 0.33 Boron <0.1 759.00 Carbon <0.1 <0.01 Oxygen 44.6 <0.01 Sodium 0.53 Magnesium 0.06 Aluminum 0.23 Silicon 27.7 0.16 Chlorine <0.1 33.00 Potassium 2.10 Calcium 0.43 Manganese <0.1 13.30 Iron 2.53 Cadmium <0.1 1075 2390.00 Lead <0.1 1976...
  • Page 63 MOISTURE Moisture Gauge Calibration The count rate is ratioed to a standard count and a suitable equation is: CR = E + F * M Where: CR = Count Ratio M = Moisture content E = CR at zero moisture content F = Slope of the function In order to determine the values of E and F, two moisture standards are required.

  • Page 64: Radiation Statistics

    7.3 Radiation Statistics Radioactive decay is a binary process, any given atom may decay or it may not. For large quantities of atoms a Poisson distribution very accurately describes the process. This distribution has a standard deviation s, which is equal to the square root of the mean rate of decay. The predicted precession of the count rate is defined as ±...
  • Page 65 which is the slope in terms of counts per minute per unit density. Combining this equation and the equation for precision and accounting for the pre scale value of 16 yields: �������� ∗ ���� ∗ ���� − ���� !�������� �������� =  ...

  • Page 66: Radiation Safety

    ∑(���� − ����) ���� (���� − ����) Where: P = Precision n = Individual measurements m = Average of measurements N = Number of measurements If the actual count rate precision obtained above is divided by the theoretical precision, a test can be made of the Gauge stability. The resultant value, R.

  • Page 67: Dosimeter

    8.2 Dosimeter Personnel using the equipment should wear personnel dosimeters in order to assure that proper care is being taken in storage, transport and use. Some regulations allow dispensing with this requirement after a period of monitoring. All visitors in the area of use should be kept to a minimum. If long term observance of the use of the equipment is needed then dosimeters should be supplied.

  • Page 68: Disposal

    8.5 Disposal The owner must not dispose of this equipment except under the following conditions: • Transfer to another licensee for possession and use as covered in their license. • Transfer to another licensee for storage or disposal as covered in their license. 8.6 Reporting of Loss or Incidents The loss of this equipment or incidents, which may cause exposures in excess of the recommended maximums, must be reported immediately to the Radiation Safety Officer and to the government agency responsible for administering the license.
  • Page 69 North Carolina Protection Section Measurement Dose Rates. Gamma dose rates were measured 08/05/88 using a Ludium Model 14C Survey Meter. Neutron does rates were measured 08/05/88 using an Eberline Model PNR-4 Neutron Rem Counter with a 22.9 cm sphere on the gauge surface, centerline was approximately 11 cm from the surface.
  • Page 70 Equipment shipped prepaid to the factory will be repaired or replaced at the option of HUMBOLDT and returned prepaid to the customer. This warranty does not apply if the product as determined by HUMBOLDT, is defective because of normal wear or accident or misuse, or as a result of service or modification by other than an Authorized Service Facility.
  • Page 72 Humboldt Mfg. Co. U.S.A. Toll Free: 1.800.537.4183 551-D Pylon Drive Voice: 1.919.832.3190 Raleigh, NC 27606-1487 U.S.A. Fax: 1.919.833.5283 Email: hsi@humboldtmfg.com Testing Equipment for Construction Materials HUMBOLDT www.humboldtmfg.com...

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