defcon.klaxon
Lifetime Supporting Member
Hi all,
Have a client with a wastewater plant, I was asked to change the scaling for a CL2 analyzer that was replaced. I was a bit shocked when they said the new analyzer is scaled at 0-2000 mg/L Typically they're seeing ~20 mg/L so we're talking about a 1% range of measurement.
I asked why in the world they'd need the scaling to be that extreme, and I got some vague story about how that was the only way that they could get it to tune in to their grab samples. This obviously makes no sense, but I need to explain to the manager why the local readout isn't matching the screen.
I don't know the brand of the analyzer (I remoted in to make the changes via TeamViewer so I've not recently been onsite, but I can find out), but while watching the raw input value, it's not even changing despite the local readout changing. With such a small range of measurement, I'm not surprised that the loop doesn't have a resolution of micro amperes, but before I try to explain that to the manager I just wanted a sanity check. Does it make sense that the mA loop from the analyzer just isn't going to have that level of resolution?
Have a client with a wastewater plant, I was asked to change the scaling for a CL2 analyzer that was replaced. I was a bit shocked when they said the new analyzer is scaled at 0-2000 mg/L Typically they're seeing ~20 mg/L so we're talking about a 1% range of measurement.
I asked why in the world they'd need the scaling to be that extreme, and I got some vague story about how that was the only way that they could get it to tune in to their grab samples. This obviously makes no sense, but I need to explain to the manager why the local readout isn't matching the screen.
I don't know the brand of the analyzer (I remoted in to make the changes via TeamViewer so I've not recently been onsite, but I can find out), but while watching the raw input value, it's not even changing despite the local readout changing. With such a small range of measurement, I'm not surprised that the loop doesn't have a resolution of micro amperes, but before I try to explain that to the manager I just wanted a sanity check. Does it make sense that the mA loop from the analyzer just isn't going to have that level of resolution?