- All
- Favorite
- Popular
- Most rated
| Brand | Tianhong |
|---|---|
| Model | THM-700 |
| Measurement Principle | Precision Splitting Technology + Thermal Mass Flow Sensing (for Air) |
| Flow Ranges | THM-701: 0–200 mL/min |
| THM-702 | 0–3 L/min |
| THM-703 | 0–20 L/min |
| Interface Diameter | Φ32.7 mm (1.25 in) |
| Operating Modes | Standard Condition (0 °C, 101.325 kPa) or Actual Condition (20 °C / 25 °C selectable) |
| Temperature & Pressure Compensation | Built-in |
| Power | Rechargeable Li-ion battery (12 h continuous operation) |
| Data Logging | 4 parameters recorded every 5 minutes |
| Wireless Communication | Integrated RF module for remote configuration and data retrieval |
| Compliance | Designed per Q/WTH 08–2014 (Tianhong Enterprise Standard), compatible with U.S. EPA reference method interface specifications |
| Brand | Yuhong |
|---|---|
| Model | TH-2008H |
| Origin | Hubei, China |
| Flow Control | Dual Mass Flow Controllers (MFCs) |
| O₃ Generation | Integrated ozone generator with 18-point calibration |
| NO₂ Generation | Quantitative NO₂ standard gas via gas-phase titration (GPT) |
| Display | 7-inch full-touch color LCD |
| Interface | Chinese menu system |
| Programmability | Up to 99 program/sequence segments |
| Environmental Compensation | Automatic temperature & pressure compensation |
| Communication | RS232, RS485, USB, Ethernet |
| Remote Capability | Remote zero/span command execution and internal parameter diagnostics |
| Alarm System | Multi-parameter fault alerting |
| Compliance | Designed for EPA, ISO 16140, EN 14625, and US EPA Method 213/214 alignment |
Show next