Standardized operating procedures for detecting tire pressure in elderly strollers, incorporating authoritative testing methods and equipment usage specifications:

1. Pre-test Preparation

Tool Selection

Recommended use of digital tire pressure gauges (error ±0.1bar) or electronic tire pressure monitoring systems

Avoid using analog pressure gauges (requires periodic calibration)

Testing Conditions

Vehicle must remain stationary for ≥3 hours or travel distance ≤1km (cold tire state)

Stable ambient temperature (avoid testing in extreme sun or rain/snow weather)

2. Standard Operating Steps

Valve Stem Treatment

Counterclockwise rotate to remove valve cap, clean valve core with dry cloth

Tire Pressure Measurement

Align pressure gauge interface vertically with valve stem, press firmly until fully sealed (electronic models require audible "beep")

Maintain stable pressure for 10 seconds before reading (analog gauges require observation of stabilized needle position)

Data Comparison

Refer to standard pressure values marked on vehicle B-pillar/fuel tank cap (typically 2.0-2.5bar)

Tire pressure difference between four wheels should be ≤0.2bar (front-drive vehicles may have front wheels 0.1bar higher)

3. Exception Handling

Underinflation

Use air pump to inflate to standard value ±0.1bar range

Overinflation

Gently press valve core to slowly release air, or use pressure gauge's deflation function

4. Precautions

Testing Frequency

Test at least monthly, mandatory check before long-distance trips

Equipment Maintenance

Calibrate pressure gauges biannually, avoid direct sunlight storage

Special Vehicle Types

High-pressure tire vehicles require adjustment according to manufacturer specifications

Recommend prioritizing vehicles with TPMS for real-time pressure monitoring. If persistent abnormalities occur, inspect tires for leaks or valve stem damage.