AILEIKE ALKB202 Portable Low-Pressure Pump Technical White Paper

AILEIKE ALKB202 Portable Low-Pressure Pump

Technical White Paper

1. Product Overview and Technical Background

The AILEIKE ALKB202 Portable Low-Pressure Pump is a device specifically designed for the testing and calibration of positive and negative low-pressure instruments, serving as an essential tool in laboratory and industrial field pressure verification applications. It provides critical technical support for the verification and calibration of instruments such as pressure gauges, pressure transmitters, and pressure switches operating within the low-pressure range. This device prioritizes airtightness, durability, and portability as its key features, designed to facilitate your testing work.

2. Technical Specifications and Performance Metrics

2.1 Basic Technical Specifications

Parameter Category	Technical Specifications	Notes
Operating Environment	Laboratory or Field Use	Suitable for various working environments
Ambient Temperature	-10 to 60°C	Wide operating temperature range
Relative Humidity	<80%	Moisture-resistant design
Pressure Range	-90 to 600 kPa	Supports both positive and negative pressure requirements
Measured Medium	Clean air	Excellent compatibility with various media
Pressure Output	2	Can connect both standard meters and test meters simultaneously
Threaded Connection	M20×1.5 or as specified by the user	Flexible interface configuration
Adjustment Precision	min 10 Pa	High-precision pressure regulation
Dimensions	220×90×80 mm	Compact design
Weight	1.8 kg	Easy to carry

2.2 Key Performance Features

Precise Pressure Control: Utilizing advanced sealing technology, this unit offers high pressure control accuracy and smooth pressure buildup, providing a reliable pressure source for pressure testing and calibration tasks.

Wide Pressure Generation Range: With a measurement range of -90 to 600 kPa, this unit integrates both positive and negative pressure generation capabilities. It allows for easy switching between positive and negative pressures, meeting a wide range of pressure testing and calibration needs.

Easy Operation and Maintenance: The lever-type pressurization mechanism allows for a wide range of pressure adjustment, ensuring a stable pressurization and depressurization process with simple operation. Additionally, the open-frame design facilitates maintenance.

Portability: Compact in size (220 × 90 × 80 mm) and lightweight (approximately 1.8 kg), it is easy to carry and suitable for both field operations and laboratory calibration.

Hygienic: The pressure transmission medium is air, ensuring hygiene and preventing environmental contamination, while also helping to improve the accuracy of calibrated instruments.

3. Main Application Areas

The ALKB202 portable micro-pressure pump is widely used in the following fields:

3.1 Metrology and Testing

In the fields of thermal metrology and control within legal metrology institutions and industrial enterprises, it is used to calibrate pressure instruments (such as pressure gauges, transmitters, and sensors) and provide a stable pressure source. ‌

3.2 Laboratory and Field Metrology

Used for laboratory and field metrology in industries such as power generation, metallurgy, petroleum, and chemical engineering, supporting the verification of precision pressure instruments.

3.3 Instrument Manufacturing

Used by pressure instrument manufacturers for factory acceptance testing and quality control to ensure that the performance specifications of shipped instruments comply with standards.

3.4 Research and Education

Used in laboratories at universities and research institutes for research and teaching experiments related to pressure measurement.

4. Operation and Maintenance Guide

Operating Procedure

Positive Pressure Testing

(1). Open the vent valve and adjust the fine-tuning knob to an appropriate position (turn the knob outward).

(2). Install the positive pressure standard gauge and the gauge under test on the two pressure output ports, then close the vent valve.

(3). Manually turn the fine-tuning knob inward to increase the pressure to approximately the calibration point, then allow the pressure to stabilize for 1–2 minutes.

(4). Once the reading on the standard gauge has stabilized, use the fine-tuning knob to adjust the pressure to the calibration point.

(5). After calibration is complete, open the vent valve. Remove the test gauge and standard gauge only after the pressure has been fully released.

If the reading slowly drops during pressurization (indicating a slight leak), close the vent valve tightly.

Negative Pressure Testing

(1) Open the vent valve and turn the fine-tuning knob inward (stop when it becomes difficult to turn).

(2) Install the negative pressure standard gauge and the test gauge on the two pressure output ports, then close the exhaust valve.

(3) Slowly turn the fine-tuning knob outward until the reading stabilizes around the calibration point for 1–2 minutes.

(4) Once the standard gauge reading has stabilized, use the fine-tuning knob to adjust to the calibration point.

(5) After calibration is complete, open the exhaust valve. Only remove the test gauge and standard gauge after the pressure has been released.

Maintenance Guide

(1) Place the micro-pressure pump on a flat, easily accessible work surface. Avoid using it in environments containing highly corrosive gases or dust particles.

(2) Ensure proper sealing at all connection points during use; inadequate sealing may cause pressure leaks.

(3) Wipe down all parts of the micro-pressure pump regularly. Ensure no liquid enters the tubing during measurements.

(4) Cover the instrument with a cloth cover when not in use to prevent dust from entering the device.

5. Conclusion

The AILEIKE ALKB202 portable micro-pressure pump features high-quality pressure-generating components, combined with a compact design, simple operation, rational structure, and excellent sealing performance. It is widely applicable in metrology, scientific research, industrial and mining enterprises, and instrument manufacturing industries.