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| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | LT-21A / LT-21B / LT-21C |
| Price | Upon Request |
| Measurement Range | 0.003–64,000 mg/L |
| Detection Limit | <0.003 mg/L (practical LOD < 0.3 mg/L) |
| Repeatability | ±2% RSD |
| Accuracy | ±3% error |
| Correlation Coefficient (r) | >0.999 |
| Wavenumber Range | 2800–3100 cm⁻¹ (corresponding to 3.2–3.5 µm) |
| Wavenumber Accuracy | ±2 cm⁻¹ |
| Wavenumber Reproducibility | ±1 cm⁻¹ |
| CH₂/CH₃/Aromatic Resolution | 3% methyl group resolution |
| Auto Zero & Full-Scale Adjustment | Yes |
| Spectral Storage | Yes |
| Statistical Analysis Module | Yes |
| Dimensions | 55 × 37 × 18 cm |
| Net Weight | 16 kg |
| Operating Environment | 10–30°C, 40–80% RH |
| Origin | Tianjin, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | STX10A |
| Price | Upon Request |
| Rated Capacity | 10 kVA / 8 kW |
| Input Voltage | 380 V ±15% to −23% |
| Input Frequency | 50 Hz ±5% |
| Input Configuration | Three-Phase Four-Wire + Ground |
| Output Frequency Stability | ±0.5% |
| Frequency Transient Response | <1 Hz/s |
| Load Transient Response | ±3% under 100% step load change |
| THD (Output) | <3% at full linear load |
| Overload Capability | 120–150% for 25 s |
| Output Waveform | Pure Sine Wave |
| AC-to-AC Efficiency | 84% |
| Transfer Time (Mains Failure/Recovery) | Zero Interruption |
| Inverter ↔ Bypass Transfer | Seamless under full load |
| Battery DC Voltage | 192 V |
| Battery Specification | Twelve 12 V / 24 Ah Sealed Lead-Acid Units |
| Runtime at Full Load | 10 minutes |
| Recharge Time | ≤10 hours to 90% SOC after full discharge |
| Display | LED status indicators (Mains, Inverter, Battery, Bypass, Fault) + 40-character LCD (showing clock, model, I/O voltage/current/frequency, battery voltage, load %, internal temperature, self-test, menu interface) |
| Audible Alarms | Mains failure (beep every 4 s) |
| Surge Protection | Compliant with IEEE C62.41 and FCC Part 15 Class A |
| Noise Level | <55 dB(A) at 1 m |
| Operating Temperature | 0–40 °C |
| Relative Humidity | 10–90% non-condensing |
| Dimensions (W×H×D) | 370 × 710 × 860 mm |
| Weight | 210 kg |
| Origin | Tianjin, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China-made) |
| Model | LYS220/10kW |
| Pricing | Available Upon Request |
| Input Voltage | AC 220 V ±25%, 50 Hz ±5% |
| Charging Voltage | DC 220–240 V |
| Charging Current | 3–10 A |
| Charging Modes | Automatic Equalization & Float Charge Conversion |
| Battery Type | Maintenance-Free Sealed Lead-Acid |
| Battery Nominal Voltage | DC 200–240 V |
| Backup Duration | Standard 90 min (configurable) |
| Full Recharge Time | < 20 h |
| Output Voltage | AC 380 V ±3% |
| Output Frequency | 50 Hz ±0.01% |
| Output Waveform | Pure Sine Wave (THD ≤5%) |
| Overload Capacity | 120% for 10 s |
| Transfer Time | < 0.20 s |
| Operating Temperature | –20 °C to +40 °C |
| Relative Humidity | 0–90% non-condensing |
| Altitude Limit | < 2500 m |
| Noise Level | 0 dB (mains mode) |
| Dimensions (W×D×H) | 800 × 600 × 2200 mm |
| Weight | 1000 kg |
| Communication Interfaces | RS232 / RS485 |
| Fire Alarm Interface | Yes |
| Control Architecture | Intel Microprocessor with SPWM Modulation |
| Display | LCD with Visual & Audible Fault Alerts |
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