What is an acceptable gain when calibrating the 1720E turbidimeter?

Document ID

Document ID TE7055

Published Date

Published Date 27/05/2017
Question
What is an acceptable gain when calibrating the 1720E turbidimeter?
Summary
The range of acceptable gain for 1720E turbidimeter calibration.
Answer
The 1720E will successfully calibrate with a gain anywhere between 0.5 and 2.0. There is a very wide range because of the variance between each incandescent bulb.

A gain that is slowly approaching 2.0 may indicate that the photocell needs to be cleaned or the bulb needs to be replaced, but any gain between 0.5 and 2.0 is acceptable.