The core value of an SF6 gas quantitative leak detector lies in converting leak rates into comparable numerical values. During selection, designers must first confirm whether the instrument's supported display units cover ml/sec, ppm, gm/yr, and oz/yr. Different units suit different scenarios: ppm is commonly used for environmental concentration monitoring, while gm/yr and oz/yr facilitate annual leakage calculation.
Sensor lifespan is one of the parameters affecting total cost of ownership. Take the GRI-8323 as an example: its sensor has a nominal lifespan of 10 years, a specification that determines the frequency and cost of sensor replacement in long-term operation and maintenance. During selection, attention should be paid to whether the sensor can be replaced on site and how calibration is performed after replacement.
Power supply and battery life need to be judged in conjunction with on-site work patterns. This model operates at DC3.7V, with a 1100mAh lithium battery, a charging time of 6-8 hours, and a continuous working time of more than 3 hours. If a single inspection takes a long time or there is no charging condition on site, it is necessary to evaluate whether to equip spare batteries or adjust the work pace.
Gas source configuration is often overlooked. The built-in 600ml high-purity argon cylinder, at a pressure of 100bar, can be used continuously for 18 hours. As a carrier gas, the purity and pressure stability of argon directly affect the detection baseline. During selection, the cylinder replacement cycle and filling convenience should be confirmed.
In terms of environmental adaptability, the device can operate at 50°C and 0-95%RH (non-condensing). High-humidity environments may affect sensor response. If on-site humidity fluctuates greatly during design selection, auxiliary measures such as dehumidification or heated sampling lines need to be considered.
In terms of display, alphanumeric display facilitates direct reading of values, and a response time of 2 seconds is suitable for rapid scanning to locate leak points. For occasions requiring precise quantification, the instrument's indication error should be regularly verified with calibration gas.
