ST314A is the Hydrogen (H2) Leak detector which can used on any sealed device for leak detection. ST314A can detect 5% Hydrogen (H2) + 95% Nitrogen (N2), H2, CO, Methane(CH4), Ethanol(Natural gas) and with an extremely sensitive semiconductor sensor, it can detect small leakage down to 1PPM precisely. Also, the adjustable sensitivity level function makes the smallest leak point easy to find. And, with LCD display and front illumination by a LED tip light, these intelligent designs give the professional engineer intuitive visual and auditory signal feedback for all common H2 leak detections.
  • ST314A
  • ST314A+配件(保護套)
  • ST314A
  • ST314A
  • LED


  • High Quality LCD display .
  • Exclusive LED Tip light design
  • Mute Function.
  • Power-saving Mode.
  • Low battery indicator.
  • Rugged flexible probe.
  • 3 adjustable sensitivity levels.
  • Detects 5% Hydrogen (H2) + 95% Nitrogen (N2), H2, CO, Methane(CH4), Ethanol(Natural gas).
  • Sensor failure indicator.
  • Buzzer beep sound respond.
  • USB power adapter.
  • DC 3.7v rechargeable lithium battery.
  • Automatic & Manual Reset to background Function.
Model ST314A
Sensor Semiconductor
Detection Gases 5% Hydrogen (H2) + 95% Nitrogen (N2), H2, CO, Methane(CH4), Ethanol(Natural gas)
Sensitivity levels High :1PPM
Medium :3PPM
Low :10PPM
Accuracy Compatibility with SAE J2791& EN14624-2020
Calibration Manually reset to background level
Automatic reset to background level
Display Color LCD (Negative)
Response Time Less than 0.5 second
Warm Up Time Approx. 50 seconds
Battery Type DC 3.7 V, 1960 mAh rechargeable lithium battery
Battery Life Max. up 10 hours continuous use when fully charged
Audio Alarm Yes (Buzzer)
Fan System Yes
Auto Power Off 10 minutes of idle
Low Battery Indicator Battery Icon
LED Tip Light Yes 
Flexible Probe Length 450 mm (18")
Operating Temperature and %RH 0~50°C (32~122°F), < 80% RH
Storage Temperature and %RH -10~60°C (14~140°F), < 70% RH
Dimensions 184x70x40 mm(7.24"x2.8"x1.6")
Weight 340 g(12 oz.)
Accessories Included: Quick Guide, USB cable, Leak test bottle
Option to buy: Charger , Rubber protector , Hard carrying case

ST314A 下載使用說明書(中文)

ST314A Instruction Manual (PDF Download)