My maximum voltage being read is different on my controller for the Little Dipper 2?
(Anything outside of 4 - 4.30 mA) If your maximum voltage on your Little Dipper 2 when connected to the controller is higher than for example 5.2mA, this tells me that either the standard isn’t accurate, the Little Dipper 2 instrument is faulty, or the configuration of the controller is not appropriate for the application. We can weed out the controller being faulty if you were to unplug the instrument from the controller and measure the output of the device using a voltmeter.
Do you have any of our liquid calibration standards? Once you use our calibration standards you can simply measure it using the instrument and report back the value you read. That would quickly tell us if the instrument were the problem. Our article at the end of the page can help explain the use of a multimeter: Getting Started with a Little Dipper 2 or Handheld Little Dipper | Turner Designs Help Center
Tolerance value of the Little Dippers?
All the Little Dippers will read between +/- 5%. Users that buy the product should do their own calibration to reflect measurements taken for their specific applications. From that point, it is based entirely on the liquid standards used to allow the product to calibrate and then measure against the standard to see if it is within +/- 5 %. Deviations from the machine readings can also tell you if your liquid standard is expired considering if the repeated readings result in an average and standard deviation that are consistent as well as different from what you know the concentration to be at.
Why does my Handheld Little Dipper stay stuck in the on position?
If you are finding that your Handheld Little Dipper is stuck in the on position where the UV light continuously outputs. Try holding down the power button for a few seconds to force shut off. If that does not work, remove the batteries and reinsert after 5 seconds to see if error persists. If this does not work, please reach out to Turner Designs Support for more assistance: Technical Support | Turner Designs | United States
What is the maximum or the range of the Handheld Little Dipper?
The Handheld Little Dipper is a low-cost unit that measures PTSA from 0-199 ppb. For customers that have our older obsolete model of Handheld Little Dipper Fluorescein, it also reads from 0-199 ppb. Information comes from our product datasheet: S-0171.pdf
What is the maximum or the range of the Little Dipper 2?
The Little Dipper 2 is a low-cost unit that measures PTSA from 0-300 ppb. For customers that have our older obsolete model of Little Dipper 2 Fluorescein, it also reads from 0-300 ppb. Information comes from our product datasheet: S-0170.pdf
How many batteries does the Handheld Little Dipper need?
The Handheld Little Dipper runs off two AA batteries which are replaceable.
What do the two buttons on handheld little dipper do?
The Handheld Little Dipper's buttons are mainly for calibration which is simple to run and only has very few functions like on/off and read.
Why is there a line that says do not submerge past this point on the handheld little dipper?
Everything below the line on the Handheld Little Dipper instrument can be submerged into the water. Having the instrument be submerged past the line will put the instrument at risk to having water enter and ruining the integrity of the electronics inside.
How many pins are on the back of a Little Dipper 2 connection port?
There are 8 connection pins on a Little Dipper 2 connection port.
