Conductivity meter for salinity?

So I borrowed a conductivity/resistivity meter from work, just to see what my salinity would be using the meter. I am getting a reading of 2.89 , and I'm thinking that this is where it is measuring it in Micro siemens per cm. And that I basically have to multiply by a 1000 to move the decimal point, and get a reading of 28.9 which would be 1.021-1.022?

Does anybody know about these meters or do they all measure differently?

BTW, I don't really have any true understanding of how this works.

 

Funny you ask. I use a conductivity meter too, but I have no idea what units it even measures in, now that I think about it. I just read the chart and convert it.

 

bump

 

Here's the conversion chart for the Pinpoint (American Marine) Salinity monitors. Welcome to American Marine Inc.

 

Thanks Inwall. But obviously after looking at this chart it proves that different meters measure in different ways. If my meter was the same as this one, nothing in my tank would be alive.

 

What brand are you using. All conductivity meters for the hobby, that I have ever seen, which are designed to measure salinity, measure in mS/cm. 53 mS/cm = 35ppt = 1.0264. Just to get the basics out of the way, are you sure it's an appropriate high range conductivity meter? Some are designed for much lower ranges of conductivity. if it was measuring at higher precision, it may not be designed for the ranges we use.
This is true of some sold for the hobby even, such as the Hanna HI 98129 and HI 98130. The intention isn't to measure saltwater. Otherwise, did you calibrate with 35ppt @77 dF calibration fluid?

 

ES-51 Portable Conductivity/Resistivity/Salinity meter - HORIBA

I'm not sure that it is the right kind of meter, like you said. although this meter should have a wide range. We use it to test on large steel water tanks. The meter was $750, and you would think it would have a wide range capability.

I just ordered a refractometer, I just was wondering if anybody knew if I was right in thinking I would just by multiplying by 1000.
Measuring salinity, TDS and conductivity.

 

If it's reading in microsiemens then yes, you'd need to divide by 1000 to convert to millisiemens. It looks like it can handle the range, but if it providing microsiemen, it may be set to the wrong range. It looked like I would need to register to download the manual, but I'm guessing it's a setting. Also, you didn't mention calibration. Salinity meters are quite sensitive to calibration.

 

the calibration was set for testing cond/res. at it pertains to work. And that being said, we are testing FW, so I didn't feel comfortable changing it.
we get a reading of 0.2 - 0.1 salinity when testing the water tanks. i was really just curious what the reading would be when I took it home. thanks for your input, and knowledge I do appreciate it.