* Note: This is not your Brix Reading - Check with your coolant manufacturer
Insights from the Field: Deciphering Proportioning Pump Mix Ratios
Proportioning pump mix ratios delineate the quantity of coolant introduced to water. For instance, our widely used MIXPP518 ensures a mix ranging from 1 part coolant to 70 parts water (represented as 1:70 or 1.4%) to a more concentrated 1 part coolant to 7 parts water (expressed as 1:7 or 12.3%).
These percentages should not be mistaken for BRIX concentration readings!
Let’s illustrate with a hands-on scenario:
A client is employing Fuchs ECOCOOL 711 as their coolant and wants to have a BRIX concentration of 10.
ECOCOOL 711 t has a refractometer correction factor of 1.4. The recommended usage concentrations, that is mixture rations, for this coolant, in a water-to-coolant ratio, span from 20:1 (which equates to ~5%) to 10:1 (corresponding to ~9%). These parameters are well within the operating mixture ratios of the MIXPP518.
To compute the precise refractometer target reading, taking the refractometer correction factor into account, divide the target concentration, 10 BRIX, by the correction factor. Thus, for ECOCOOL 711 with its 1.4 correction factor, the actual refractometer reading needs to be 7.14 (10/1.4).