I have an LAE AH1-5. I'm not sure if it's the same for the AC1-5, but LAE has for some unknown reason deliberately removed the decimal point for temperatures above 19.9C, even when ScL = 1C The result is that the controller is unusable for the heating application I bought it for!
Hi Lance. Thanks for your comment. Our technical team have suggested the following: For the AH1-5 with SCL set to 1, the value displayed will show a decimal point between -9.9°C to 19.9°C. This means from -10°C to -50°C, there is no decimal point and from +20°C to +80°C there is also no decimal point. For a heating application that needs a decimal point, you would need a more accurate process controller. Usually for heating applications over 20°C, whole numbers - with no decimals - are sufficient. For the AC1-5 with SCL set to 1, then the decimal point is always there. However, ensure you use a thermocouple or a PT100 - as PTC/NTC probes have a tolerance themselves of approx.+/- 1°C. So if decimal points are needed then it must mean serious accuracy is required from the probe also.
@@HawcoCoUk Thanks for replying. It just seemed so random to have the decimal point for some of the range, but not the rest. I'm trying a Carel IR33 in PID mode now - will see how it goes.
