The accuracy of the flowmeter can be determined by the change in the pulses per litre value over a flow rate range selected from the calibration certificate. This document is also available for download from litremeter.com.
- Repeatability is better than ±0.1% of reading over the top 99% of range.
- Accuracy with linearisation is better than ±0.5% of reading.
The minimum flow rate achievable depends on many variables but can be reduced to two factors:
- the viscosity of the fluid. The higher the viscosity, the lower the low flow rate ability
- the perfection of the meter dimensions and components
- Standard (STD) calibration rates can be achieved 99 times out of a 100. No special selection required
- Low Flow (LF) calibration requires matched parts and more calibration time
- Ultra Low Flow (ULF) calibration requires the best parts and the most patience by our
calibration engineers. It is highly unlikely we can provide a batch of ULF meters due to their scarcity.
In particular, for LF03, LF05 and LF15, we can compare the low flow limits both on a linear scale and, secondly, on a logarithmic scale, as well as in a traditional table: