英国CLASS的CARGO-SAFE舱口盖超声波泄漏仪特点和优势

The Cargo-Safe and Door-Safe receivers unparalleled performance.

The signal from the ultrasonic transmitter is a bi-tone, slightly above and slightly below 40 kHz. Therefore, the receivers must exclusively capture these two very close frequencies. Any other frequencies produced by machinery, welding, repair work, or possibly from fluorescent lighting, must be rejected by the receiver. Any noise interference would show up on the receiver's display and be heard in the headphones which increases the display reading above the true value and obscuring the transmitter's bee-boo sound in the headphones. When the signal to the receiver is weak the display error can be significant. for instance at the critical time when readings are being taken from the closed hatch cover. Consequently, it is essential that the receiver only registers the transmitter sound and nothing else. The Class Instrumentation receiver has a unique capability to filter out all other sounds outside the transmitter's precise frequency range of 40 kHz, making it unparalleled in recording reliable and error-free results; essential requirements for an error free ultrasonic receiver.

货物保险箱和门保险箱具有无与伦比的性能。

超声波发射器的信号是双音，略高于和略低于40kHz。因此，接收器必须专门捕获这两个非常接近的频率。接收器必须拒绝机械、焊接、维修工作或荧光灯产生的任何其他频率。任何噪声干扰都会出现在接收器的显示器上，并在耳机中听到，这会使显示器读数高于真实值，并掩盖耳机中发射器的蜂鸣声。当接收器的信号较弱时，显示错误可能会很大。例如在从关闭的舱口盖读取读数的关键时刻。因此，接收器必须只记录发射器的声音，而不记录其他声音。Class Instrumentation接收器具有独特的能力，可以过滤掉发射器40 kHz频率范围之外的所有其他声音，使其在记录可靠和无误差的结果方面无与伦比；无误差超声波接收器的基本要求。

Transmitter Emitter testers for hatch-cover testersare crucial for ensuring accurate measurements.These transmitters employ multiple emitters to create a uniform spread of ultrasound. Each emitter must operate at maximum power to produce this even distribution. The uniform spread of ultrasound is essential to ensure consistent energy levels impact the entire hatch-cover seal. This consistency allows the open-hatch value (OHV) to be measured anywhere around the hatch-cover, yielding reliable decibel readings. The pass/fail criteria for hatch-cover seals are standardised at 10% of the OHV. Thus, it is vital that each emitter functions at maximum power to maintain consistent ultrasound throughout the ship's hold.

Testing the output of each emitter requires individual assessment using a calibrated emitter tester. Class Instrumentation Ltd includes a dedicated emitter tester in their Cargo-Safe hatch-cover testing kit. This tester is used before each survey to verify the transmitter's proper operation, ensuring compliance with all hatch-cover testing regulations. Class Instrumentation Ltd provides these essential tools.

舱口盖超声波泄漏仪的发射器---发射器对于确保准确测量至关重要。

这些发射器采用多个发射器来产生均匀的超声波传播。每个发射器必须以功率运行，以产生这种均匀的分布。超声波的均匀传播对于确保一致的能量水平影响整个舱口盖密封至关重要。这种一致性允许在舱口盖周围的任何地方测量打开舱口值（OHV），从而产生可靠的分贝读数。舱口盖密封件的合格/不合格标准标准为OHV的10%。因此，至关重要的是，每个发射器都以功率工作，以在整个船舱内保持一致的超声波。

测试每个发射器的输出需要使用校准的发射器测试仪进行单独评估。Class Instrumentation有限公司在其货舱