Advanced Multi Component Gas Liquid Dynamic Gas Calibration Equipment for Laboratory and Field Gas Distribution Instrument
The MR-DO2 is a high-precision intelligent gas preparation system developed by Beijing Minniete Environmental Equipment Co., Ltd. Equipped with a 7-inch capacitive touchscreen and proprietary operating software, it performs gas-liquid mixed gas distribution. A thermal imported high-accuracy mass flow controller drives multiple gas channels at various ratios to produce gas concentrations dynamically with no warm-up and immediate start-up, while a high-precision syringe pump and a micro-range injection needle handle the liquid dosing, all safeguarded by universal Modbus485 digital signals.
The instrument tests linearity, accuracy, repeatability and other technical indicators of gas analyzers or gas detection devices. It is an indispensable tool for the verification, maintenance and repair of such instruments, and also acts as a fixed-concentration gas generator.
- Supports gas-liquid mixed gas distribution.
- Allows a second stage of two-channel interference gas re-mixing after the initial mixing.
- Closed-loop fuzzy control technology delivers fast response and accurate flow regulation.
- Large 7-inch capacitive LCD with Chinese display for simple operation.
- Self-developed control system that automates the whole distribution process.
- Multi-function in one unit: gas, liquid-vaporization and gas-liquid mixed distribution.
- Instant start-up with no preheating, saving preparation time and improving efficiency.
- Precise and stable with thermal mass flow controllers and a high-precision syringe pump.
- Intelligent closed-loop control with fast response and accurate output.
- Easy operation via a 7-inch capacitive touchscreen and Chinese interface.
- Broad applicability for calibration, testing and standard gas preparation.
| Parameter | Specification |
|---|---|
| Flow Accuracy | ≤ ±1% F.S |
| Flow Linearity | ±0.3% F.S |
| Flow Repeatability | ±0.2% F.S |
| Response Time | ≤ 50 ms (distribution) |
| Single Range Ratio | 200:1 / 100:1 / 50:1 |
| Maximum Mixing Ratio | 4000:1 / 2000:1 / 1000:1 / 500:1 |
| Dilution Gas Flow Range | 0-10 SLM / 0-5 SLM / 0-1 SLM / 0-500 SCCM / 0-10 SCCM (selectable) |
| Parameter | Specification |
|---|---|
| Input Pressure | (0.2–11) MPa |
| Working Differential Pressure | 0.05–0.3 MPa |
| Maximum System Pressure | < 1 MPa |
| Vaporization Chamber Temperature | 0–350 °C |
| Temperature Control Accuracy | ≤ 0.1 °C |
| Operating Ambient Temperature | 5–45 °C |
| Relative Humidity | < 80% RH |
| Parameter | Specification |
|---|---|
| Power Supply | AC 220 V, 50±0.5 Hz |
| Maximum Power | 300 W (heating to 350 °C); solenoid valve max. 24 W |
| Dimensions (L*H*D) | 483 mm * 300 mm * 452 mm |
| Weight | 32 kg |
Widely used in factories, research institutes and laboratories for the calibration and testing of gas analyzers, gas detectors and gas sensors, as well as the preparation of standard gas samples.
Beijing Minniete Environmental Equipment Co., Ltd.
A high-tech enterprise integrating R&D, production, sales and service.
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