BJ-AT
Joint Transducers
5 to 50 mm
BJ-5AT
CJS-1C
Suitable to check concrete blocks for opening at the joint.
Embedded across a joint of adjoining concrete blocks, the BJ-AT series joint transducers measure an opening between blocks. A temperature measuring function enables simultaneous measurement of displacement and temperature. In addition, for measurement of cracks of concrete or rock-bed, a dedicated receptacle allows embedment in concrete and mounting legs or fixtures enable surface installation.
Features
- Suitable to check concrete blocks for an opening at the joint or cracks initiated mainly by temperature change
- Mounting fixtures are available to measure an opening between a hydraulic pipe and backing concrete, as well as to use them as ordinary displacement transducers to check for deformation of blocks at dam monitoring areas or to detect displacement of rock-bed.
- For embedment in concrete, the dedicated receptacle CJS-1C is embedded in advance in a preceding block and the joint transducer is installed to the next block.
PDF download
- BJ-AT (191.13 kB)
- BJ-AT Manual (115.29 kB)
Specifications
Performance
| ●Displacement Measurement | |
| Rated Capacity | See table below |
| Nonlinearity | Within±1.5% RO |
| Hysteresis | Within±1.5% RO |
| Rated Output | 1 mV/V (2000μm/m) or more |
| ●Temperature Measurement | |
| Rated Capacity | -30 to 70℃ |
| Measurement Error | ±0.5 ℃ (-30 to 70℃) |
| (Refer to Small-Sized Temperature Transducer BTS-100AT, here ) | |
Environmental Characteristics
| Safe Temperature Range | -30 to 80℃ |
| Compensated Temperature Range | -20 to 70℃ |
| Temperature Effect on Zero Balance | Within±0.05% RO/℃ |
| Temperature Effect on Output | Within±0.05%/℃ |
Electrical Characteristics
| Recommended Excitation Voltage | 2 to 10V AC or DC |
| Input Resistance | 350Ω±1% at 0℃ |
| Output Resistance | 450Ω±0.8% at 0℃ |
|
Cable
|
4-conductor (0.5 mm 2 ) chloroprene shielded cable, |
| 11.5 mm diameter by 1 m long, bared at the tip |
Mechanical Properties
| Safe Overload Rating | 120％ |
| Weight | Approx. 790 g |
※For surface installation and various mounting fixtures, contact KYOWA sales representative.
※For ordinary displacement transducers, refer to here .
Optional Accessory
| Dedicated receptacle | CJS-1S |
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