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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: [GQC] Tim on October 05, 2013, 01:34:54 pm

Title: Calibration of DM-2 industrial dual tds monitor
Post by: [GQC] Tim on October 05, 2013, 01:34:54 pm

Lost the instructions to this unit, but it said to use 342 ppm NaCl to calibrate.

However it said a flowing NaCl solution is to be preferred, if that's not possible its necessary to calibrate to a if I remember correctly higher ppm. Can anyone remind me what this value is? Thanks.

Title: Re: Calibration of DM-2 industrial dual tds monitor
Post by: [GQC] Tim on October 08, 2013, 08:26:57 pm

Managed to get the userguide from customer support.

Quote

For better accuracy, calibrate to a flowing solution. If this is not possible, you can calibrate to a still
solution. (If calibrating to a still (not flowing) solution, calibrate to 3% above the level of the
calibration solution. This will accommodate for the lack of flowing water, which the monitor is
programmed for. For example, if the calibration solution is 342 ppm, calibrate to 352 ppm.)