We are a leading supplier of of water level and water quality sensors. Our expertise in media isolated pressure sensors offers unique advantages in creative product development and consistent product performance. Water level transducers can be customized and are available in a wide range of accuracies, materials, and cabling. With your choice of analog or digital output, our sensors are easily adapted to any data system. Or, use self-powered units with onboard memory for long term deployment. We also provide water quality instrumentation for analyzing lakes, rivers, estuaries, and aquifers worldwide. Our CTD models measure conductivity, temperature, and depth critical to water resources improvement and preservation.
Water Level Data Loggers
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Accuracy
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±0.05% FS TEB (TruBlue 555, 575, 585) 1% of reading or 20 μs/cm (TruBlue 585)
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0.05% FS TEB
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0.05% FS TEB
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Range
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0 - 692 ft (TruBlue 555, 585)
8 - 16 psia (TruBlue 575)
5 - 200,000μs/cm (TruBlue 585)
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0 - 658 ft H2O
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8 - 16 psia
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Maximum Over-range
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2X FS (TruBlue 555, 585)
32 psia (TruBlue 575)
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3X FS
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3X FS
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Output
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RS-485, SDI - 12
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RS 485, SDI - 12
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RS 485, SDI-12
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Data Logging Memory
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8 MB
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8 MB or 56 MB
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8 MB or 56 MB
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Operating Temperature
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0°C to 50°C
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0°C to 50°C
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0°C to 50°C
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Dimensions (mm)
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Ø19.0 x 390.0
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Ø19.0 x 222.0
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Ø19.0 x 222.0
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Typical Applications
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Groundwater monitoring, surface water monitoring, oceanographic research, barometric pressure monitoring
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Flood and storm monitoring, wave studies and rapid sampling, stream and stage gaging, slug and pump test, aquifer characterization
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Barometric pressure monitoring
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Accuracy
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±0.05% FS TEB (KPSI 500) ±0.01 ft H2O (KPSI 501)
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±0.10% FS TEB (KPSI 353) ±0.05% FS TEB (KPSI 355) ±0.01 ft H2O (KPSI 351)
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±0.05% FS TEB (KPSI 600) ±0.01 ft H2O (KPSI 601)
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Range
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10 - 230 ft (KPSI 500) 10 - 50 ft (KPSI 501)
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10 - 230 ft (KPSI 353, 355) 10 - 50 ft (KPSI 351)
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10 - 230 ft (KPSI 500) 10 - 50 ft (KPSI 501)
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Maximum Over-range
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2X FS
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2X FS
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5X FS
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Output
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SDI - 12, RS-485
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SDI - 12, RS-485
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SDI - 12, RS-485
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Operating Temperature
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-20°C to 60°C
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-20°C to 60°C
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-20°C to 60°C
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Dimensions (mm)
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Ø25.4 x 197.0
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Ø19.0 x 243.0
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Ø25.4 x 197.0
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Typical Applications
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Groundwater monitoring, surface water monitoring, oceanographic research
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Groundwater monitoring, surface water monitoring, oceanographic research
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Dissolved gas monitoring, trailrace egress monitoring, ground water monitoring, oceanographic research
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Digital Temerature Sensors
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Output
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SDI - 12, RS-485 |
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Connection
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Open port nosepiece |
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Range
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-20°C to 60°C |
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Accuracy
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±0.1°C |
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Dimensions (mm)
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Ø19.0 x 127.0 |
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Typical Applications
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Groundwater monitoring, surfacewater monitoring, storm water, dam operations and stream gaging |
Anlog Level Sensors - 1" Bore
| Accuracy |
±1.00%, ±0.50%, ±0.25% FSO |
±0.10%, ±0.05% FSO |
| Range |
Custom ranges from:
2.3 - 700 ft H2O (Vented)
10 - 700 ft H2O (Sealed)
35 - 700 ft H2O (Absolute)
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Custom ranges from:
5 - 700 ft H2O (Vented: KPSI 730)
0 - 5 ft H2O to 0 - 700 ft H2O
Sealed, Absolute: KPSI 730)
6 - 700 ft H2O (Vented KPSI 735)
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| Maximum Over-range |
2X FS |
2X FS |
| Output |
4 - 20 mA, 0 - 5 VDC,
0 - 2.5 VDC, 0 - 4 VDC,
0 - 10 VDC, 1.5 - 7.5 VDC
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4 - 20 mA, 0 - 5 VDC, 0 - 2.5 VDC,
0 - 4 VDC, 0 - 10 VDC,
1.5 - 7.5 VDC
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| Operating Temperature |
-20°C to 60°C |
-20°C to 60°C |
| Dimensions (mm) |
Ø25.4 x 86.6 |
Ø25.4 x 86.6 |
| Typical Applications |
Groundwater monitoring, surface water monitoring, oceanographic research, pump control, life stations, landfill leachate |
Groundwater monitoring, surface water monitoring, oceanographic research, pump control, life stations, landfill leachate |
| Agency Approvals |
CE, WEEE, RoHS, UL and FM (Intrinsically safe)
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CE, WEEE, RoHS, UL and FM (Intrinsically safe) |
Analog Level Sensors - 0.75" Bore
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Accuracy
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±0.10%, ±0.05% FSO (KPSI 330, 335)
±0.25% FSO (KPSI 320)
±0.25% FS TEB (KPSI 342)
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±0.50% FSO
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Range
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Custom ranges from:
5 - 700 ft H2O (Vented: KPSI 320, 330, 335)
10 - 700 ft H2O (Vented KPSI 342)
0 - 5 ft H2O to 0-700 ft H2O (Sealed: KPSI 330, 342)
10 - 700 ft H2O (Sealed: KPSI 320)
35 - 700 ft H2O (Absolute: KPSI 320, 330, 342)
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Custom ranges from:
700 - 6,921 ft H2O
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Maximum Over-range
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2X FS
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2X FS
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Output
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4- 20 mA, 0 - 5 VDC, 0 - 2.5 VDC, 0 - 4 VDC,
0 - 10 VDC, 1.5 - 7.5 VDC (KPSI 320, 330, 335)
4 - 20 mA (KPSI 342)
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4 - 20 mA, 0 - 5 VDC, 0 - 2.5 VDC,
0 - 4 VDC, 0 - 10 VDC, 1.5 - 7.5 VDC
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Operating Temperature
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-20°C to 60°C (KPSI 320, 330, 335)
-20°C to 85°C (KPSI 342)
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-20°C to 60°C
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Dimensions (mm)
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Ø19.0 x 151.0
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Ø19.0 x 215.0
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Typical Applications
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Groundwater monitoring, surface water monitoring, oceanographic research, pump control, lift stations, landfill leachate, tailrace and forebay monitoring
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Down hole, level control, pump control
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Agency Approvals
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CE, WEEE, RoHS, UL and FM (Intrinsically safe)
(KPSI 320, 330, 335) CE, WEEE, RoHS (KPSI 342)
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CE, WEEE, RoHS
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Level Sensors - OEM
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Accuracy
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±0.25% FSO
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±0.25% FSO
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±0.25% FSO
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±0.25% FSO
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Options
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Optional ETFE
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Optional standoff (KPSI 745)
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Optional lightning protection
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Optional lightning protection
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Range
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Custom ranges from 6 - 115 ft H2O
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Custom ranges from 10 - 115 H2O
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0 - 1 psi up to 0 - 300 psi
Custom ranges available
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0 - 11.5, 23.1, 34.6, 69.2, 115.4 ft H2O
Custom ranges available
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Operating Temperature
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-20°C to 60°C
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-20°C to 60°C
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-20°C to 60°C
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-20°C to 60°C
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Maximum Over-range
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2X FS
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2X FS
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2X FS
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2X FS
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Output
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4 - 20 mA, 0 - 5 VDC, 0 - 2.5 VDC, 0 - 4 VDC, 0 - 10 VDC, 1.5 - 7.5 VDC
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4 - 20 mA, 0 - 5 VDC, 0 - 2.5 VDC, 0 - 4 VDC, 0 - 10 VDC, 1.5 - 7.5 VDC
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4 - 20 mA
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4 – 20 mA, 0 – 5 VDC, 0 – 10 VDC, 0 – 2.5 VDC, 0 – 4 VDC, 1.5 – 7.5 VDC
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Dimensions (mm)
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Ø25.4 x 86.6
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KPSI 745: Ø88.9 x 279.4 (With standoff)
Ø88.9 x 253.3 (Without standoff)
KPSI 750: Ø104.1 x 279.4
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LTA: Ø25.4 x 93.0 LT: Ø25.4 x 170.5 (Dependent on fitting)
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LTB: Ø104.1 x 206.5 LTR: 287.1 with overmold conduit connection, 253.5 with gland seal conduit connection
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Typical Applications
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Wastewater, lift stations, pump control, slurry tank liquid level, tank level
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Wastewater, lift stations, pump control, slurry tank liquid level, tank level
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Pump control, tank liquid level, landfill leachate monitoring, construction bypass pumping, dewatering, lift station monitoring, submersible tank liquid level, liquid line pressure, slurry tank liquid level, wastewater
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Pump control, tank liquid level, landfill leachate monitoring, construction bypass pumping, dewatering, lift station monitoring, submersible tank liquid level, liquid line pressure, slurry tank liquid level, wastewater
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Agency Approvals
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CE, WEEE, RoHS, UL and FM (Intrinsically safe)
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CE, WEEE, RoHS, UL and FM (Intrinsically safe)
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CE, WEEE, RoHS, with optional UL, CUL, and FM (Intrinsically safe)
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CE, WEEE, RoHS, with optional UL, CUL, and FM (Intrinsically safe)
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Non-subersible pressure Transducers - OEM Level Sensors
| Accuracy |
±0.5%, ±0.25% |
±0.1% |
| Options |
IP68 submersible option |
IP68 submersible option |
| Range |
1 - 300 psi (Vented) 5 - 2000 psi (Sealed)
15 - 2,000 psi (Absolute)
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2 - 300 psi (Vented) 5 - 500 psi (Sealed, absolute) |
| Maximum Over-range |
2X FS |
2X FS |
| Output |
4-20 mA, 0-5 VDC, 0-2.5 VDC 0-4 VDC, 0-10 VDC, 1.5-7.5 VDC |
4-20 mA, 0-5 VDC, 0-2.5 VDC 0-4 VDC, 0-10 VDC, 1.5-7.5 VDC |
| Operating Temperature |
-20°C to 60°C |
-20°C to 60°C |
| Dimensions (mm) |
Ø25.4 x 86.6 |
Ø25.4 x 86.6 |
| Typical Applications |
Line pressure monitoring, pump and lift stations, pump control, tank levelmonitoring, underwater research |
Line pressure monitoring, pump and lift stations, pump control, tank level monitoring, underwater research |
| Agency Approvals |
CE, WEEE, RoHS, UL and FM (Intrinsically safe) |
CE, WEEE, RoHS, UL and FM (Intrinsically safe) |