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| Brand | Tianhong |
|---|---|
| Origin | Hubei, China |
| Type | Fixed-Mount Primary Calibration System |
| Compliance | GB 3095-2012, HJ 654-2013 |
| Core Components | SRP Main Unit, Zero Air Generation System, High-Accuracy Pressure Sensor, UV Photometer Reference Standard, Control & Data Acquisition Workstation |
| Gas Path Materials | PTFE/PVDF Valves & Fittings |
| Flow Control | Digital Mass Flow Controllers (MFCs) |
| Interface | 7-inch Touchscreen (Bilingual Chinese/English GUI) |
| Environmental Compensation | Automatic Temperature & Pressure Compensation |
| Alarm Function | Multi-Parameter Real-Time Alerting |
| Zero Air Specification | Dry, High-Purity (>99.999%), Stable Flow Output |
| Brand | Tianhong |
|---|---|
| Origin | Hubei, China |
| Model | TH-2003H |
| Instrument Type | Online |
| Measurement Range | 0–1000 ppb (configurable) |
| Detection Limit | <1 ppb |
| Response Time | <30 s (T90) |
| Zero Drift | ±1 ppb/24 h |
| Resolution | 0.1 ppb |
| Operating Temperature | 5–40 °C |
| Pressure Compensation | Built-in absolute pressure sensor |
| Temperature Compensation | Integrated NTC thermistor |
| Display | 7-inch capacitive touchscreen |
| Data Logging | Internal storage for ≥1 year (one record per 5 min) |
| Communication | RS232/RS485, Modbus RTU, optional Ethernet |
| Gas Path Materials | PTFE (Teflon®) valves, fittings, and sample lines |
| Alarm Outputs | 4 programmable relay outputs |
| Compliance | CE-marked, RoHS-compliant, designed per IEC 61000-6-3 (EMC) and IEC 61000-6-2 (immunity) |
| Brand | Yuhong |
|---|---|
| Model | TH-2003H |
| Detection Principle | UV Absorption at 254 nm |
| Display | 7-inch capacitive touchscreen |
| Concentration Units | ppb, ppm, µg/m³, mg/m³ |
| Data Logging Interval | 5 minutes |
| Battery Life | >10 hours (rechargeable Li-ion) |
| Flow Path Materials | PTFE (Teflon®) |
| Auto Range Switching | Yes |
| Temperature & Pressure Compensation | Integrated |
| Remote Diagnostics & Calibration Support | Yes |
| Alarm Functions | Multi-parameter configurable |
| Power Supply | AC/DC dual-mode |
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