Calibration Ratio Formula:
From: | To: |
Definition: This calculator determines the calibration ratio (R) by comparing the actual flow rate to the target flow rate of a Fill-Rite flow meter.
Purpose: It helps technicians and operators verify and adjust flow meter accuracy for precise fuel or fluid dispensing.
The calculator uses the formula:
Where:
Explanation: The ratio indicates how much the flow meter's reading deviates from the actual flow. A ratio of 1 means perfect calibration.
Details: Regular calibration ensures accurate fuel dispensing, prevents measurement errors, and maintains compliance with industry standards.
Tips: Enter both the actual measured flow rate and the target flow rate in GPM (Gallons Per Minute). All values must be > 0.
Q1: What does the calibration ratio tell me?
A: A ratio > 1 means the meter reads low (under-dispensing), while < 1 means it reads high (over-dispensing).
Q2: How often should I calibrate my flow meter?
A: Typically every 6-12 months, or whenever accuracy is questioned, after repairs, or when changing fuel types.
Q3: What's an acceptable calibration ratio range?
A: Most applications require ±1% accuracy (ratio between 0.99-1.01).
Q4: How do I measure actual flow rate?
A: Use a calibrated prover tank or another certified measurement device during a timed dispensing test.
Q5: What if my ratio is outside acceptable range?
A: Follow manufacturer's instructions to adjust the flow meter's calibration settings.