AFJ-150 Type U-shaped Inclined Manometer Product Manual
Product Overview
The AFJ-150 Type U-shaped Inclined Manometer is a portable micro-pressure measuring instrument featuring an adjustable inclination design and a professional tripod adapter for field and underground mining operations. When used in conjunction with a Pitot tube, this product can accurately measure wind speed, air resistance, and flow parameters in coal mine ventilation networks. It is also suitable for professional technical tasks such as anemometer calibration.
Structure and Working Principle
Main Structure
1. Base Plate Assembly: Equipped with a tripod connecting nut at the bottom.
2. Flat Plate Assembly: Integrated with a strip level and horizontal fine-tuning screws.
3. Support Plate Assembly:
o U-shaped glass measuring tube (with scale)
o Inclination coefficient adjustment bracket (including locking device)
o Adjustable inclination coefficients: 0.1/0.2/0.5/0.7
Matching Tripod
? Adjustable leg height
? Equipped with leveling calibration and locking functions
Technical Parameters
Item Specification
Measuring Range 0～100mm H?O
Accuracy Class Grade 4
Operating Temperature 5～40℃
Working Liquid Ethanol solution (specific gravity 0.810g/cm3)
Instrument Dimensions 440×130×75mm (L×W×H)
Instrument Weight 2.2kg (total weight with tripod: 2.9kg)
Precautions
1. Level calibration must be performed using the level before use.
2. Different inclination coefficients correspond to different range accuracy requirements.
3. The working liquid must be checked and replenished regularly.
4. The adjustment bracket should be locked during transportation to prevent damage.
(Production date is indicated on the product nameplate. This manual was updated in July 2025.)

Zhengzhou Aidi ProductionAFJ-150 Type U-shaped Inclined ManometerSupplies coal drill cuttings desorption instrument, deep hole sampling device, pressure measuring instrument, geological exploration desorption instrument, borehole flow meter, mine extraction and outburst prevention equipment, true density measuring instrument for coal, gas content measuring instrument, automatic initial gas emission speed measuring instrument, diffusion speed measuring instrument, gas parameter instrument for coal extraction pipelines, borehole coal powder circulation device