HC51 leak detector by mechanical pointer table display, operation is extremely simple.
High frequency, low frequency and frequency three filtering modes, extremely low electrical noise, sound quality is excellent.
Sensor using high-quality, military-grade components, long service life and listen not only clarity, resolution and sensitivity has been upgraded to a new level, most technical indicators have not less than similar foreign products.
Mechanical pointer table with LED backlight, convenient for night-time use.
Domestic industry exclusive is equipped with a sturdy, high quality noise fully enclosed listening level headphones, can significantly reduce environmental noise disturbance to listen, because the headphones at the same time has a closed structure and high sensitivity, so more could hear leaking underground more vibration measurement.
Made of high quality large capacity rechargeable lithium-ion battery, a full charge about 40~ can work continuously for 50 hours.
Battery level display.
Panel is provided with a "listen" button, monitor switch on the handle and it has the same function, increasing the "listen" button after years of use, it's goal is to prevent, handle monitor switches may be used by exposure to adverse effects, the alternate on the Panel "monitor" button may be used instead.
Instruments hosting small volume, light weight, shoulder and tied at the waist can be, alleviate fatigue for a long time.
HC51 leak detector in strict accordance with the standards in the Q/321001 JQF 03-2011 (technical supervision Bureau, Yangzhou city, Jiangsu Province, for the record).
Equipment has passed the China Defense Science and technology industry laboratories, China's shipbuilding industry and reliability test center for electric and electronic equipment "report number: F-SEC ER12059".
Second, the technical parameters:

Sensitivity: ≥ 1.0V/mG (at 500Hz)
Frequency range:
Low frequency coverage: 40Hz~ 600Hz.
High frequency coverage: 600Hz~ 2500Hz.
Wide band coverage: 40Hz~ 2500Hz.
Power supply (8.4V,2200 mAH rechargeable lithium-ion battery);
Automatic smart charger full charge time is less than 3 hours
Operating temperature:-20 ℃ ~ + 55 ℃; Storage temperature:-30 ℃ ~ + 70 ℃
Instrument carrying case dimensions (LxWxH): 36cmx25cmx12cm
Weight and dimensions:
Instruments hosting (including battery): 0.6 kg (including battery)

Overall dimensions (LxWxH): 15cmx7cmx11cm

Vibration sensor probe: 0.35 kg

Suitcase packages total weight (including instruments): 4.5 kg

Third, the instrument works, button function, operation:

1, the instrument works:

Instrument by the vibration sensor and preamplifier circuit, filter circuit, power amplifier circuits, listening through headphones, electric meter display in two ways by the operator signal in synthetic judgments, analyze the leak leak location and size.