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| Brand | Restek |
|---|---|
| Model | GC-Specific Thermal Conductivity Gas Leak Detector |
| Detection Principle | Thermal Conductivity Differential Sensing |
| Detectable Gases | He, H₂, N₂, Ar, CO₂ |
| Minimum Detectable Leak Rate | 1.0 × 10⁻⁶ atm·cc/sec (H₂), 1.0 × 10⁻⁵ atm·cc/sec (He), 1.0 × 10⁻⁴ atm·cc/sec (Ar/CO₂), 1.4 × 10⁻³ atm·cc/sec (N₂) |
| Response Time | ≤2 seconds |
| Power Supply | Rechargeable NiMH battery (6 h typical operation) with low-battery and charging indicators |
| Operating Temperature | 0–48 °C (32–120 °F) |
| Relative Humidity | 0–97 % RH |
| Enclosure Rating | CE, Ex (ATEX/IECEx compliant for non-incendive use), Japan PSE |
| Compliance | RoHS, WEEE |
| Auto-Zero Function | One-button activation |
| Probe Design | Ruggedized, flexible-tip, cleanable, position-switch enabled |
| Housing | Ergonomic handheld chassis with side-grip reinforcement |
| Auto-Shutdown | Enabled after 5 minutes of inactivity |
| Accessories Included | Hard-shell carrying case, universal AC adapter kit |
| Warranty | 1 year limited |
| Brand | Agilent Technologies |
|---|---|
| Origin | USA |
| Model | G3388A |
| Detection Principle | Thermal Conductivity Differential Sensing |
| Response Time | <1 s |
| Minimum Detectable Leak Rate | 0.01 mL/min (H₂/He) |
| Dimensions | 6.35 cm × 3.81 cm × 14.6 cm (2.5 in × 1.5 in × 5.75 in) |
| Weight | 310 g |
| Power Source | Rechargeable NiMH Battery (5 h runtime) |
| Compliance | Designed for use with Agilent GC systems |
| Brand | Agilent Technologies |
|---|---|
| Origin | USA |
| Model | ADM 1000 |
| Accuracy | ±3% of reading or ±0.2 mL/min (whichever is greater) |
| Flow Range | 0.5–1000 mL/min |
| Operating Temperature (Instrument) | 0–45 °C |
| Operating Temperature (Line) | –70 to 135 °C |
| Calibration | NIST-traceable 5-point calibration |
| Power Supply | 9 V battery |
| Gas Compatibility | Clean, dry, non-corrosive gases |
| Output Interface | None (ADM 1000) |
| Measurement Principle | Volumetric flow measurement via thermal dispersion sensing |
| Brand | Restek |
|---|---|
| Model | ProFLOW 6000 |
| Origin | USA |
| Flow Range | 0.5–500 mL/min |
| Accuracy | ±2% of reading or ±0.05 mL/min (whichever is greater) |
| Calibration Traceability | NIST-traceable |
| Explosion Protection | Certified for flammable and explosive gases (Ex-rated) |
| Operating Temperature | 0–48 °C |
| Relative Humidity | 0–97% RH (non-condensing) |
| Power Supply | 2 × AA batteries |
| Data Interface | USB |
| Certifications | CE, RoHS, WEEE |
| Enclosure Options | Handheld and benchtop configurations |
| Auto-shutdown | Yes |
| Warranty | 1 year |
| Brand | Agilent Technologies |
|---|---|
| Origin | USA |
| Model | ADM 2000 |
| Flow Range | 0.5–1000 mL/min |
| Accuracy | ±3% of reading or ±0.2 mL/min (whichever is greater) |
| Gas Compatibility | Clean, dry, non-corrosive gases (e.g., N₂, H₂, He, Air, CO₂, CH₄, 95% Ar/CH₄) |
| Measurement Type | Volumetric flow with mass flow calculation |
| Output Interface | RS-232 |
| Power Supply | 9 V battery or 120/220 V AC adapter |
| Compliance | Designed for laboratory-grade gas flow verification in GC systems |
| Accessories | Optional carrying case (P/N 907-0056) |
| Part Number | 220-1171-U (120 V), 220-1171-E (220 V) |
| Brand | PerkinElmer |
|---|---|
| Origin | USA |
| Model | FlowMark 1000 |
| Flow Range | 0.1–1000 mL/min |
| Accuracy | ±3% of reading or ±0.05 mL/min (whichever is greater) |
| Operating Temperature | 0–45 °C |
| Calibration Traceability | NIST-traceable |
| Display | Alphanumeric LCD |
| Power Supply | 9 V battery (also compatible with 2 × AA batteries per variant specifications) |
| Compliance | CE, ATEX/IECEx Ex-certified (for hazardous areas), RoHS, WEEE |
| Gas Compatibility | Clean, dry, non-corrosive, non-flammable gases only |
| Data Interface | USB port |
| Auto-power-off | Yes |
| Enclosure | Ergonomic handheld housing with side-grip design |
| Warranty | 1 year |
| Brand | Restek |
|---|---|
| Origin | USA |
| Model | LD-229 |
| Detection Principle | Thermal Conductivity (TCD-based) |
| Detectable Gases | He, H₂, Ar, Ne |
| Minimum Detectable Leak Rate | 0.01 mL/min (for He and H₂) |
| Power Source | Rechargeable Ni-Cd battery (4 h charge time, 5 h typical operation, up to 9 h with fresh fully charged battery) |
| Operating Temperature | 10–35 °C |
| Dimensions | 65 mm (W) × 37 mm (D) × 143 mm (H) |
| Probe Length | 85 cm |
| Net Weight | 330 g |
| Display | LCD with real-time status indication |
| Alarm | Dual-mode — visual (LED) and audible (variable-tone buzzer) |
| Compliance | Designed for laboratory and industrial leak-checking in accordance with ASTM E1715 and ISO 10012-based verification practices |
| Accessories | EU-type AC adapter (220 V), replaceable particulate filter (P/N 2702-19395) |
| Origin | Beijing |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Domestic (China) |
| Model | 100 mL/min Full-Scale |
| Pricing | Upon Request |
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