Pulsar
Pulsar
Compact, hand-held, light weight, coupling-free instrument for measuring the of ultrasonic pulse velocity (UPV) of longitudinal stress waves propagating within concrete.
In contrast with traditional pulse velocity instruments, Pulsar incorporates two antenna arrays, each one with a set of 7 dry-point-contact (DPC) transducers, in order to work without a coupling material (grease or gel). The antennas are brought into contact with the surface of the test object directly which allows to make measurements much quicker. The receiving antenna is fixed to the electronic unit while the transmitting antenna is connected by a 3 meter cable.
Ultrasonic Velocity Tester.
- Assessment of concrete uniformity
- Locating internal voids and cracks
- Estimation of the extent and severity of deterioration
- Estimating depth of fire damaged concrete
- Evaluation of damage to test specimens during durability testing (freeze and thaw, sulfate attack, alkali-silica reaction)
- Estimation of depth of surface-opening cracks
- Estimation of early-age strength (with project/mixture specific correlation)
- Evaluation of condition or elastic properties of solid materials like rocks, bricks or composites.
Ultrasonic Velocity Tester.
- Antennas with an array of 7 dry point contact, undamped, longitudinal-wave transducers
- The signal waveform can be displayed
- Operating frequency: 50 kHz
- Rechargeable battery with 16 hours life
- 8”, 320 × 240 LCD screen
- Data transfer to computer via USB
- Transit time measurement range: 0.1 to 10,000 µs
- Pulse velocity measurement range: 1,000 to 15,000 m/s
- Transit time (t) measurement accuracy: ± (0.02∙t + 0.1) µs
- Resolution: 0.1 µs (transit time), 10 m/s (pulse velocity)
- Maximum distance to measure: 2,500 mm
- Automatic Gain Control (AGC) function.
- Storage capacity: 50,000 results
- Metric and inch-pound units
- Instrument’s weight: 420 g
- Instrument’s dimensions: 230 x 125 x 65 mm
- Operating conditions: Temperature: -10 to 50 °C, RH ≤ 95 %
Ultrasonic Velocity Tester.
Pulsar (PUL-1000) Ordering Numbers
tem | Order # |
|
Hand-held electronic unit, Pulsar A1410, with carrying case | PUL-1001 |
|
Transmitter antenna array with 7 DPC transducers, longitudinal wave | PUL-1002 | |
LEMO-LEMO cable, 3 m | PUL-1003 | |
Charger and USB cable for connection to PC | PUL-1004 | |
Reference specimen with calibration certificate | PUL-1005 | |
User manual | PUL-1006 |
.
ASTM C597: “Standard Test Method for Pulse Velocity Through Concrete”
ASTM E494: “Standard Practice for Measuring Ultrasonic Velocity in Materials”
EN 12504-4: “Testing concrete. Determination of ultrasonic pulse velocity”
BS 1881:203: “Testing Concrete – Part 203: Recommendations for Measurement of Velocity of Ultrasonic Pulses in Concrete”
ACI 228.2R: “Report on Nondestructive Test Methods for Evaluation of Concrete in Structures”