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Summary of Contents for TESTING 7306
- Page 1 TESTING Bluhm & Feuerherdt GmbH Production and Sales of Systems for the Testing of Construction Materials Motzener Str. 26b DE 12277 Berlin, Germany Tel. +49(0)30/710 96 45-0 Fax +49(0)30/710 96 45-98 www.testing.de Operating Manual Air Pycnometer, 1 Litre Type 7306...
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Page 2: Table Of Contents
Date of issue of this Operational Manual ..................23 15.2 Copyright ............................. 23 15.3 Contact for help and spare parts ....................23 Attachments: Declaration of conformity Spare-parts list Exploded diagram and functional elements of the 1-litre manual Air Pycnometer Sequence of operations; testing the device... -
Page 3: Basic Instructions
DIN 18125, Sheet 2, “Determination of Water Content by Fast Procedures,” describes how to measure the water content w. The technical testing specifications for soils and rocks, TP BF-StB, Part B 3.3, published by the German Research Association for Roads and Transportation, describes measure- ment of the grain density s. -
Page 4: Safety Instructions
Air Pycnometer Model 3.7306 Safety instructions 1.3.1 Obligations of the user This Air Pycnometer has been designed and built in accordance with the state of the en- gineering art and with the accepted rules of good engineering practice. The use of this Air Pycnometer, however, can cause danger to the health and safety of the User and third parties. -
Page 5: Receiving The System From The Forwarding Agent; Transport
Air Pycnometer Model 3.7306 Receiving the system from the forwarding agent; transport 1.4.1 Receiving the system from the forwarding agent When the system arrives from the forwarding agent, make an external inspection. If there are no visible damages or other shortcomings, accept the consignment from the freight forwarder (the package service or a haulage agent). -
Page 6: Scope Of Delivery
Tamper and straightedge for striking off If you request, we can deliver, as an option at extra cost, a calibration record for use as proof of monitoring of testing equipment. This can be important as part of your quality management system. -
Page 7: Description Of The Measuring Method
, as shown by the precision pressure gauge, into the record of testing. If pressure equalization does not take place within 5 to 10 seconds, and if the pressure continues to decrease, then the measuring device has a leak. If this is the case, open the air-vent valve (8) of the test pot. -
Page 8: Evaluation Of The Results For Water Content
Important note: Before testing, make sure that the temperature of the soil sample and the temperature of the Air Pycnometer are the same as the ambient air temperature. If these temperatures are different even by 1 °C, this can lead to pressure deviations in the two chambers, and to faulty results. -
Page 9: Determination Of The Water Content W By Using Nomographic Chart No. 1
Air Pycnometer Model 3.7306 Determination of the water content w by using nomographic chart no. 1 The enclosed nomographic chart no. 1 enables determination of the water content of soils with a grain density of 2.65 g/cm³ (for example, sands and gravelly sand). This is the basic reference grain density. -
Page 10: Determining The Grain Density
2. Note: This conduct of testing requires a high degree of measurement exactness and simultane- ous checking of the measurement procedures with a reference volume. If the soil sample to be tested is delivered in earth-moist condition, then the test for grain density should take place on the earth-moist soil sample –... -
Page 11: Checking The Measuring Accuracy
Air Pycnometer Model 3.7306 undergo a change in volume. Before filling the pot with the soil sample, place a refer- ence volume (for example, 100 or 200 ml) into the empty test pot. The volume plates can be obtained from the manufacturer. Here also, the plate volume must be sub- tracted from the total volume. -
Page 12: Air Pycnometer Measurements Made On Cylinder Samples
Air Pycnometer Model 3.7306 Air Pycnometer measurements made on cylinder sam- ples The soil material taken from a standardized sampling cylinder – in accordance with DIN 18125-2 (i.e., diameter = 100 mm and height = 120 mm) – will fit into the test pot of the Air Pycnometer. -
Page 13: Care Of The Air Pycnometer
Pycnometer to reach the same temperature, a measurement check should be made be- fore conduct of testing. This check is performed with the volume calibration set. If this measurement check reveals a discrepancy with respect to the calibration scales, then it is possible to slightly change the volume of the test pot by changing the position setting of the tightening bolts. -
Page 14: Description Of The Analysis Procedure (Nomographic Chart No. 1)
Air Pycnometer Model 3.7306 Description of the analysis procedure (nomographic chart no. 1) 12.1 Determination of the water content As shown in Fig. 2 below, enter the mean value of all pressure-gauge measurements on the x axis. Then draw a vertical line from this value upward to intersect the plot of the test mass (i.e., the sample weight). -
Page 15: Determination Of The Grain Density
Determination of the grain density To improve the accuracy of testing (see Section 6 here), you should add a certain amount of water to the dried soil sample (for example, 300 g = 300 cm³). See Fig. 3 for the following... - Page 16 Air Pycnometer Model 3.7306 2. Pressure-gauge reading [in bar] 1129 Volume according to nomographic chart no. 1 More accurate volume after subtrac- tion of the additional water volume V' Specific gravity in accordance with 2.66 nomographic chart no. 1 As an example, the pressure-gauge reading was determined after calibration had been performed from...
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Page 17: Determination Of Various Soil-Mechanics Parameters For Soil Samples Taken From Sampling Cylinders In Accordance With Din 18125
Air Pycnometer Model 3.7306 12.3 Determination of various soil-mechanics parameters for soil samples taken from sampling cylinders in accordance with DIN 18125 12.3.1 Determination of the wet soil density Analysis procedure: Start by finding the volume (sampling cylinder plus soil sample) on the horizontal volume scale. -
Page 18: Determination Of The Air Content
Air Pycnometer Model 3.7306 12.3.3 Determination of the air content The air content is read off as following, by using Fig. 6: Take a horizontal line from the point where it intersects the rising parabolic line from the initial point ... -
Page 19: Determination Of The Pore Volume
Air Pycnometer Model 3.7306 12.3.5 Determination of the pore volume You can read off the pore volume at the right side of the graph, at the density scale, at the level of the found here. In other words: the pore-volume scale (n) rises in scale values from the bottom to the top. -
Page 20: Correction Of A Volume Measurement
Fill the test pot with water and determine the volume as described in Section 3. Example 1: Testing of a soil sample, with a mean pressure-gauge reading of 1.252 bar on chart no. 1, resulted in a volume of 824 ml (V ). - Page 21 Air Pycnometer Model 3.7306 Checking the volume in an Air Pycnometer in case of incorrect reading of a precision pres- sure gauge, or in case of deviation from the calibration data: Sample number: Dry mass plus the mass of the test pot [in g]: 3.892...
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Page 22: Influence Of Temperature On The Measurement Results
Contact for support: Please get in touch will the following specialists for testing the function of the Air Pyc- nometer, calibrating the Air Pycnometer, preparation of the analysis charts, and new cali-... -
Page 23: After-Sales Service And Spare Parts
15.2 Copyright The copyright to this Operational Manual remains with the company TESTING Bluhm & Feuerherdt GmbH. This Operational Manual is intended only for the Operator, the User, and his staff. The information in this Operational Manual may not be: ... - Page 24 Air Pycnometer Model 3.7306...
- Page 25 Air Pycnometer Model 3.7306 List of spare parts For: Air Pycnometer, 1 Litre Old part numbers New part numbers Qty Name of parts Including the following: 3.7306 3.7306 LP unit, complete 3.7306-O Upper part, without test pot 1.7304-01 1.7304-A1 Test pot, complete 1.7304-02.01...
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