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| Brand | ZOLIX |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | ZLDM-118 |
| Price Range | USD 1,400 – 2,800 |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Target Gas | CH₄ (Methane), other hydrocarbons (C₁–C₄) |
| Measurement Range | 0–5% vol and 0–100% vol selectable |
| Resolution | 0.01% vol (0–5% vol range), 0.1% vol (0–100% vol range) |
| Output Interfaces | Analog (4–20 mA / 0–5 V / 0–10 V) and Digital (RS485 Modbus RTU) |
| Operating Temperature | −40 °C to +70 °C |
| Humidity Tolerance | Unaffected by relative humidity under non-condensing conditions |
| Calibration | Factory-calibrated per customer-specified span gas |
| Compliance | GB 15322 (Combustible Gas Detectors), GB 3836.1–2000 (Explosion-Proof General Requirements), GB 3836.4–2000 (Intrinsically Safe “i” Equipment) |
| Brand | Moxtek |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | GasCard NG |
| Price Range | USD 2,800 – 7,000 (FOB) |
| Detection Principle | Non-Dispersive Infrared (NDIR) Spectroscopy |
| Measurable Gases | CO₂, CH₄, N₂O, C₆H₁₄ |
| CO₂ Range Options | 0–500 ppm, 0–5,000 ppm, or 0–100% vol |
| CH₄ Range Options | 0–5% to 0–100% vol |
| N₂O Range | 0–1,000 ppm |
| C₆H₁₄ Range | 0–2,000 ppm |
| Output Interface | RS-232, RS-485, UART, Analog (0–5 V / 4–20 mA) |
| Operating Temperature | –10 °C to +50 °C |
| Humidity Range | 0–95% RH (non-condensing) |
| Warm-up Time | < 60 s |
| Long-term Drift | < 2% FS/year |
| Calibration | Factory-calibrated |
| Origin | Jiangsu, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Regional Origin | Domestic (China) |
| Model | MA-003 |
| Pricing | Available Upon Request |
| Brand | ZOLIX |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | ZLDM-126T |
| Price Range | USD 1,400 – 2,800 |
| Technology | Non-Dispersive Infrared (NDIR) |
| Measurement Principle | Absorption Spectroscopy at 4.26 µm |
| Output Signal | Analog (0–5 V / 4–20 mA) and Digital (UART/I²C) |
| Operating Temperature | −10 °C to +50 °C |
| Humidity Range | 0–95 % RH (non-condensing) |
| Accuracy | ±(30 ppm + 3 % of reading) |
| Resolution | 1 ppm |
| Response Time (T90) | < 120 s |
| Zero Drift | < 2 ppm/month |
| Span Drift | < 2 %/year |
| Lifetime | > 15 years |
| Power Supply | 5 VDC ±5 % |
| Current Consumption | < 35 mA |
| Dimensions | 32 × 22 × 12 mm |
| Weight | ~8 g |
| Compliance | RoHS, CE (EMC/LVD), ISO 8573-1 Class 4 (for internal gas path) |
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