KM800 Series
KM800 Series gas mass flow meter features explosion-proof safety, fast response, wide measurement range, high resolution, high precision, compact size, excellent repeatability, and cost-effectiveness. Suitable for laboratory gas metering, environmental monitoring, hospital oxygen supply, and other applications.
Key Specifications
Applications
Model Specifications
| Basic Parameters | |
| Media Requirement | Clean, dry, non-corrosive gas |
| Media Type | Air, nitrogen, oxygen, carbon dioxide, helium, hydrogen, methane, argon, etc. |
| Flow Range¹ (N2 equivalent) | (0~20, 50, 100, 200, 500) sccm (0~1, 5, 10, 50, 100, 200, 500, 800, 1000) slm Other ranges customizable, please contact us |
| Accuracy | 1.0% F.S. <50slm 1.5% F.S. ≤100slm and ≥50slm 2.0% F.S. >100slm |
| Turndown Ratio | 100:1 |
| Response Time³ | ≤10ms |
| Flow Pressure Loss | ≤100Pa (range dependent) |
| Repeatability | ≤±0.2% F.S. |
| Resolution | 0.01 sccm, ≤100 sccm 0.1 sccm, ≤1 slm and >100 sccm 1 sccm, ≤5 slm and >1 slm 0.01 slm, >5 slm |
| Max Pressure Rating | 2MPa |
| Environmental Conditions | |
| Operating Temperature | 0~50℃ |
| Operating Humidity | 10%~90% R.H. (no condensation) |
| Working Pressure⁴ | 0~1MPa |
| Storage Temperature | -20~85℃ |
| Electrical Parameters | |
| Power Supply | DC 8~24V |
| Power Consumption | ≤250mW |
| Display | LCD screen (100ms refresh) or host software |
| Communication Interface | |
| Interface Type | 7-pin aviation connector |
| Analog Control | 4~20mA (optional) |
| Digital Control | RS485 |
| Digital Signal (RS485) | |
| Interface Type | 7-pin aviation connector |
| Baud Rate | 9600 (default), 14400, 19200, 38400, 56000, 57600, 115200 Configurable via command or host software |
| Protocol | Modbus-RTU |
| Device Address | 1 (default) ~250 Configurable via command or host software |
| Mechanical Parameters | |
| Connector Type | Ferrule: 8mm, 12mm, 1/4inch, 1/8inch Others available |
| Wetted Materials | Aluminum alloy, fluororubber, silica |
| Body Material | Base: Aviation aluminum alloy (316L stainless steel available for bulk orders) Housing: Aluminum alloy |
| Seal Material | FKM fluororubber |
| Weight | 0.30kg |
•Unless otherwise specified, this product is calibrated under the following conditions: nitrogen, 25℃, 2.5 bar differential pressure (inlet 3.5 barA, outlet 1 barA), horizontal position.
•It is recommended to install a straight pipe section of appropriate size at the inlet, otherwise accuracy deviation may occur.
•It is recommended to use the largest possible fittings at the inlet and outlet to avoid additional pressure loss.
•The shown ranges are available for nitrogen.
•Response time refers to the time required to reach ±2% of the set value.
•Working pressure refers to the differential pressure between inlet and outlet.
Key Features
Explosion Proof
ExdIICT4 rating
Ultra Fast Response
≤10ms response time
High Resolution
Up to 0.01sccm
Wide Range
0~20sccm to 0~1000slm
Digital Display
LCD real-time display
RS485 Communication
Modbus-RTU protocol
Applications
Downloads
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