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2. Instrument Selection

2.1 Schmidt OS-120 models

There are two models available.

•

OS-120PT for testing concrete in the very low compressive strength range. Typically from 1 N/
mm2 to 5.0 N/mm2 ( 145 psi – 725 psi). This makes the instrument very suitable for testing fresh
concrete to determine the time for formwork removal.

•

OS-120PM for testing the mortar joints in brick constructions.

3. Schmidt OS-120 Layout

1 Housing with handle

2 Reset lever

3 Hammer complete (PM/PT)

4 Trigger button

5 Scale (Rebound value)

6 Control knob

7 Hammer head (PM/PT)

A Contact surface

B Loading position

Hammer head Schmidt OS-120PT (7)

Hammer head Schmidt OS-120PM (7)

Содержание SCHMIDT OS-120

Страница 1: ...SCHMIDT OS 120 CONCRETE TEST HAMMER OPERATING INSTRUCTIONS Made in switzerland www proceq com...

Страница 2: ......

Страница 3: ...heck 4 4 2 Preparations 5 4 3 Measuring 5 4 4 Conversion curves for Schmidt OS 120PT 6 5 Measuring and evaluation with the Schmidt OS 120PM 8 5 1 Functional check 8 5 2 Preparations 8 5 3 Measuring 9...

Страница 4: ...uthorized structural modifications to the instrument and its components Serious damage resulting from the effects of foreign bodies accidents vandalism and force majeure All information contained in t...

Страница 5: ...s makes the instrument very suitable for testing fresh concrete to determine the time for formwork removal OS 120PM for testing the mortar joints in brick constructions 3 Schmidt OS 120 Layout 1 Housi...

Страница 6: ...after each usage of the hammer As a minimum it should be carried out after 1 000 impacts or once every three months Place the test anvil on a hard smooth surface e g stone floor Clean the contact sur...

Страница 7: ...d to the desired position V for testing on vertical surfaces or H for testing on horizontal surfaces 4 3 Measuring Grip the OS 120PT by the handle on the housing 1 Exert a light pressure against the t...

Страница 8: ...PT into the neutral position i e set the Schmidt OS 120PT on a horizon tal surface e g leave it on the anvil after the control check set the control knob 6 to position V depress the reset lever 2 to b...

Страница 9: ...15x2 0 0615x 0 3585 Vertical impact direction N mm2 y 0 8337 0 0009x2 0 0808x 0 5081 fc Cylinder 150 300 fc N mm2 R 0 100 200 300 400 500 600 700 800 900 0 5 10 15 20 25 30 35 40 45 50 OS 120 PT Conve...

Страница 10: ...tion in the document delivered with the instrument or on the Proceq website 5 Measuring and evaluation with the Schmidt OS 120PM The OS 120PM is used to test the mortar of joints in masonry constructi...

Страница 11: ...ing the trigger button 4 Read the rebound value from the scale 5 Repeat the procedure as many times as the standard you are working to requires For example EN 12504 2 requires a minimum of 9 rebound v...

Страница 12: ...rature 10 bis 50 C 32 bis 122 F Storage temperature 10 bis 70 C 14 bis 158 F 7 Standards and Guidelines 7 1 Standards The rebound number is determined on the basis of the following standards EN12504 2...

Страница 13: ...ce Maintenance includes a regular check of the instrument and cleaning of the breaking strip as de scribed in chapter 4 1 To guarantee consistent reliable and accurate measurements the instrument shou...

Страница 14: ...12 2013 Proceq SA...

Страница 15: ...2013 Proceq SA 13 Notes...

Страница 16: ...m Proceq Rus LLC Ul Optikov 4 Korp 2 Lit A Office 412 197374 St Petersburg Russland Telefon Fax 7 812 448 35 00 info russia proceq com Proceq Middle East P O Box 8365 SAIF Zone Sharjah Vereinigte Arab...

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