Signet 2750 pH/ORP Sensor Electronics provide two-wire 4 to 20 mA loop output for
pH and ORP measurements, without the expense of local display and other luxuries
available in full-featured transmitters. Preampli
fi
cation is built-in, reducing system costs
while ensuring absolute signal integrity up to 305 m (1,000 ft).
These sophisticated
fi
eld-mount devices also provide digital (S
3
L) output. The 2750
Sensor Electronics self-con
fi
gure for pH or ORP operation via automatic recognition of
electrode type, and the DryLoc
®
electrode connector quickly forms a robust assembly
for submersible and in-line installations.
NEMA 4X Junction Boxes are integral parts of the in-line versions (2750-1, 2750-2,
and 2750-7) and are available as accessories for the submersible versions (2750-3
and 2750-4). The optional EasyCal feature allows simple push-button calibration and
includes an LED for visual feedback.
3-2750.090 Rev. N 10/16
*3-2750.090*
Signet 2750 DryLoc
®
pH/ORP Sensor Electronics
English
Operating Instructions
Description
Table of Contents
2750-1, 2750-2
2750-3, 2750-4
Warranty Information ...............................................................................2
Product Registration ................................................................................2
Safety Information ...................................................................................2
Chemical Compatibility ............................................................................2
Speci
fi
cations .......................................................................................2-3
In-Line Installation Notes .........................................................................3
In-Line Dimensions ..................................................................................3
Mounting Position ....................................................................................4
In-Line Assembly ..................................................................................4-5
Submersible Installation .......................................................................5-6
Digital (S
3
L) Wiring ..................................................................................6
4 to 20 mA Loop Wiring ...........................................................................7
Calibration ...............................................................................................7
Troubleshooting .......................................................................................8
Ordering Information................................................................................8
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2750-7
