Table of Contents
Advertisement
1.3.
Specification
1.3.1. Mechanical Index of Rebound Apparatus
Metrological verification specifications: Verification Regulations of Rebound Apparatus
(JJG_817-2011)
Impact energy:
bridge construction
Rigidity of recoiling tension spring: 785±30.0N/m
Length of pointer:
Friction of pointer:
Spherical radius of recoiling rod:
Active length of recoiling tension spring:
Impact length of recoiling rod: 75.0±0.3 mm
Initial bouncing position of recoiling hammer:
Calibration value on steel anvil:
Graduating position "100" of shell calibration:
of calibrator cover plate of the rebound apparatus.
Consistency of test indicating value:
Operating Temperature: -4ºC-+40ºC
1.3.2. Appliance Indexes
Display screen:
Resolution:
Mass Memory:
Maximum number of testing zones: 16
Maximum number of test points in a testing zone:
National unified curve:
Customized curve:
Battery:
Data interface:
Types of sensor:
Strength unit:
Communication mode:
1.4.
Parameter Specification
Test times (test point), for each test point in each testing zone, according to Regulations,
the test times are 16.
Testing zone, a test unit for testing concrete compressive strength of structure or
component, with an appropriate area no more than 0.04 ㎡.
Equivalent value of concrete strength in testing zone refers to the concrete compressive
strength value of the tested unit calculated based on the average rebound value and
carbonization depth of testing zone via strength-measuring curve.
Test angle, casting surface, if the rebound apparatus is not in horizontal direction or the
tested surface is non-concrete casting side, after setting the test angle and casting surface
respectively, the apparatus can automatically conduct angular correction and casting
surface correction of rebound value.
0.225kgm (2.207J±0.100J), for testing ordinary building and
20.0±0.2mm
0.65±0.15n
R25±1.0
61.5±0.3mm
80±2
≦±1
high-light blue OLED display screen
256X64
Maximally can store components: 1000
1
2
can charge high-capacity Li-ion battery
Mini-USB interface
non-contact optical coupler type sensor
2
Mp, N/mm
, Kgf/ mm
serial port communication, wireless communication (optional)
graduated scale"0"+1
overlap with the side of positioning gap
16 times
2
Advertisement
Table of Contents
