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pH Transmitters & Probes
Achieve accurate acidity and alkalinity readings with our selection of industrial pH transmitters and probes. Built for harsh process environments, these instruments support consistent chemistry in wastewater, food and beverage, and chemical manufacturing operations.
Filters 52 Results
52 items
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The Dwyer - PHE-6510B is a pH Electrode featuring Flat Surface, Submersion, 0 pH to 14 pH, BNC, CPVC, and Mounting Assemblies Required for Installation. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-6510B Series. Sold individually.
$291.75
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-7351-15 is a pH Electrode featuring Industrial, 0 pH to 12 pH, 3/4 " NPT Male, PTFE, ABS, and Refillable General Purpose. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-7151-15 Series. Sold individually.
$249.40
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHE-7352-15 is a pH Electrode featuring Submersible, Heavy Duty, 0 pH to 14 pH, 3/4 " NPT Male, PPS, PTFE, FKM, Glass, and 100 psi. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-7352 Series. Sold individually.
$265.64
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHE-5460 is a pH Electrode featuring Flat Surface, In Line, 0 pH to 14 pH, 3/4 " NPT Male, CPVC, and 100 psi. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-5460 Series. Sold individually.
$302.63
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-1311 is a pH Electrode featuring Rugged Gel-Filled, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Part of the Alpha Series. Sold individually.
$125.78
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-6510B-HF is a pH Electrode featuring Flat Surface, Submersion, 0 pH to 14 pH, BNC, CPVC, HF/Fluoride Resistant, and Mounting Assemblies Required for Installation. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-6510B Series. Sold individually.
$352.11
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-7353-15 is a pH Electrode featuring Submersible, Heavy Duty, Long Insertable Sensor, 0 pH to 14 pH, 3/4 " NPT Male, PPS, PTFE, FKM, Glass, and 100 psi. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-7353 Series. Sold individually.
$325.93
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHH444 is a pH/mV/Temperature Meter Kit featuring 0 pH to 14 pH, -414.12 mV to 414.12 mV, ± 0.02 pH + 2 Digit, 3 AAA Batteries, Includes pH Sensor, pH4, pH7, and pH10 Cal Solution. Part of the PHH444 Series. Sold individually.
$523.41
Should ship between 26 Dec and 02 Jan
Subject to factory lead times
The Dwyer - PHE-1304 is a pH Electrode featuring Rugged Gel-Filled, 0 pH to 12 pH, BNC, Epoxy, and PTFE. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-1311 Series. Sold individually.
$73.30
Should ship between 28 Nov and 12 Dec
Subject to factory lead times
The Dwyer - PHE-1411 is a pH Electrode featuring Rugged Gel-Filled, Double Junction, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Part of the Alpha Series. Sold individually.
$183.34
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - CDS107 is a Benchtop/Handheld Meter for pH featuring ORP, Conductivity, TDS, Salt & Temperature, Microprocessor-Based, 9 V Battery, AC Adaptor, and Large LCD Display. Part of the CDS107 Series. Sold individually.
$655.55
Should ship between 16 Jan and 23 Jan
Subject to factory lead times
The Dwyer - AM-2250TX is a Multi-Variable Transmitter featuring pH, ORP, Conductivity & Flow Loop, 0 pH to 14 pH, -999 mV to +999 mV, 0.055 µS/cm to 500000 µS/cm, 0 to 999, 16 Vdc to 32 Vdc, and 4 mA to 20 mA. Part of the AM-2250TX Series. Sold individually.
$832.37
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PHE-4222 is a ph Electrode featuring Alpha, Flask Size, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$211.02
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-6820B is a pH Electrode featuring Flat Surface, Retractable, 0 pH to 14 pH, 1 " NPT Male, and CPVC. It is rated for a temperature range of 87 °C (190 °F). Sold individually.
$307.88
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-4201 is a ph Electrode featuring Alpha, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$144.77
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHTX-100 is a pH Transmitter featuring 2-Wire, 0 pH to 14 pH/ -1999 mV to 1999 mV, 12 Vdc to 24 Vdc, 4 mA to 20 mA, and Non-Volatile Memory. Part of the PHTX-100 Series. Sold individually.
$680.49
Should ship between 09 Jan and 16 Jan
Subject to factory lead times
The Dwyer - PHE-5431-10 is a pH Electrode featuring High Temperature, Insertion Type, 0 pH to 14 pH, BNC, PTFE, Glass, Polymer, EPR, and 500 psi. It is rated for a temperature range of 135 °C (275 °F). Part of the PHE-5431-10 Series. Sold individually.
$300.31
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHE-45P is a pH Electrode featuring 2-Wire, Isolated, 0 pH to 14 pH/-1000 mV to 2000 mV, and PEEK Sensor Body Construction. Sold individually.
$966.26
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PHTX-45 is a pH Transmitter featuring 2-Wire, Isolated, 24 Vdc, 4 mA to 20 mA, and Weatherproof & Corrosion Resistant. Sold individually.
$1,086.09
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PHE-6821 is a pH Electrode featuring Flat Surface, Retractable, 0 pH to 14 pH, 1 " NPT Male, and PVDF. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$661.50
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - DPU91P is a Multi-Variable Input Transmitter featuring Flow, pH/ORP, Conductivity, 0.0000 ?S to 99999 ?S, 10.8 Vdc to 35.2 Vdc, 4 mA to 20 mA, and Panel Mount. Part of the DPU91 Series. Sold individually.
$709.94
Should ship between 28 Nov and 12 Dec
Subject to factory lead times
The Dwyer - PHE-4232 is a ph Electrode featuring Alpha, Semi-Micro, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$224.06
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-4202 is a ph Electrode featuring Alpha, Double Junction, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$158.86
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-5460-1 is a pH Electrode featuring Flat Surface, In Line, 0 pH to 14 pH, 1 " NPT Male, CPVC, and 100 psi. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-5460 Series. Sold individually.
$394.43
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-6510B is a pH Electrode featuring Flat Surface, Submersion, 0 pH to 14 pH, BNC, CPVC, and Mounting Assemblies Required for Installation. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-6510B Series. Sold individually.
$291.75
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-7351-15 is a pH Electrode featuring Industrial, 0 pH to 12 pH, 3/4 " NPT Male, PTFE, ABS, and Refillable General Purpose. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-7151-15 Series. Sold individually.
$249.40
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHE-7352-15 is a pH Electrode featuring Submersible, Heavy Duty, 0 pH to 14 pH, 3/4 " NPT Male, PPS, PTFE, FKM, Glass, and 100 psi. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-7352 Series. Sold individually.
$265.64
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHE-5460 is a pH Electrode featuring Flat Surface, In Line, 0 pH to 14 pH, 3/4 " NPT Male, CPVC, and 100 psi. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-5460 Series. Sold individually.
$302.63
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-1311 is a pH Electrode featuring Rugged Gel-Filled, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Part of the Alpha Series. Sold individually.
$125.78
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-6510B-HF is a pH Electrode featuring Flat Surface, Submersion, 0 pH to 14 pH, BNC, CPVC, HF/Fluoride Resistant, and Mounting Assemblies Required for Installation. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-6510B Series. Sold individually.
$352.11
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-7353-15 is a pH Electrode featuring Submersible, Heavy Duty, Long Insertable Sensor, 0 pH to 14 pH, 3/4 " NPT Male, PPS, PTFE, FKM, Glass, and 100 psi. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-7353 Series. Sold individually.
$325.93
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHH444 is a pH/mV/Temperature Meter Kit featuring 0 pH to 14 pH, -414.12 mV to 414.12 mV, ± 0.02 pH + 2 Digit, 3 AAA Batteries, Includes pH Sensor, pH4, pH7, and pH10 Cal Solution. Part of the PHH444 Series. Sold individually.
$523.41
Should ship between 26 Dec and 02 Jan
Subject to factory lead times
The Dwyer - PHE-1304 is a pH Electrode featuring Rugged Gel-Filled, 0 pH to 12 pH, BNC, Epoxy, and PTFE. It is rated for a temperature range of 80 °C (176 °F). Part of the PHE-1311 Series. Sold individually.
$73.30
Should ship between 28 Nov and 12 Dec
Subject to factory lead times
The Dwyer - PHE-1411 is a pH Electrode featuring Rugged Gel-Filled, Double Junction, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Part of the Alpha Series. Sold individually.
$183.34
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - CDS107 is a Benchtop/Handheld Meter for pH featuring ORP, Conductivity, TDS, Salt & Temperature, Microprocessor-Based, 9 V Battery, AC Adaptor, and Large LCD Display. Part of the CDS107 Series. Sold individually.
$655.55
Should ship between 16 Jan and 23 Jan
Subject to factory lead times
The Dwyer - AM-2250TX is a Multi-Variable Transmitter featuring pH, ORP, Conductivity & Flow Loop, 0 pH to 14 pH, -999 mV to +999 mV, 0.055 µS/cm to 500000 µS/cm, 0 to 999, 16 Vdc to 32 Vdc, and 4 mA to 20 mA. Part of the AM-2250TX Series. Sold individually.
$832.37
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PHE-4222 is a ph Electrode featuring Alpha, Flask Size, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$211.02
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-6820B is a pH Electrode featuring Flat Surface, Retractable, 0 pH to 14 pH, 1 " NPT Male, and CPVC. It is rated for a temperature range of 87 °C (190 °F). Sold individually.
$307.88
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-4201 is a ph Electrode featuring Alpha, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$144.77
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHTX-100 is a pH Transmitter featuring 2-Wire, 0 pH to 14 pH/ -1999 mV to 1999 mV, 12 Vdc to 24 Vdc, 4 mA to 20 mA, and Non-Volatile Memory. Part of the PHTX-100 Series. Sold individually.
$680.49
Should ship between 09 Jan and 16 Jan
Subject to factory lead times
The Dwyer - PHE-5431-10 is a pH Electrode featuring High Temperature, Insertion Type, 0 pH to 14 pH, BNC, PTFE, Glass, Polymer, EPR, and 500 psi. It is rated for a temperature range of 135 °C (275 °F). Part of the PHE-5431-10 Series. Sold individually.
$300.31
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - PHE-45P is a pH Electrode featuring 2-Wire, Isolated, 0 pH to 14 pH/-1000 mV to 2000 mV, and PEEK Sensor Body Construction. Sold individually.
$966.26
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PHTX-45 is a pH Transmitter featuring 2-Wire, Isolated, 24 Vdc, 4 mA to 20 mA, and Weatherproof & Corrosion Resistant. Sold individually.
$1,086.09
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PHE-6821 is a pH Electrode featuring Flat Surface, Retractable, 0 pH to 14 pH, 1 " NPT Male, and PVDF. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$661.50
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - DPU91P is a Multi-Variable Input Transmitter featuring Flow, pH/ORP, Conductivity, 0.0000 ?S to 99999 ?S, 10.8 Vdc to 35.2 Vdc, 4 mA to 20 mA, and Panel Mount. Part of the DPU91 Series. Sold individually.
$709.94
Should ship between 28 Nov and 12 Dec
Subject to factory lead times
The Dwyer - PHE-4232 is a ph Electrode featuring Alpha, Semi-Micro, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$224.06
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-4202 is a ph Electrode featuring Alpha, Double Junction, 0 pH to 14 pH, BNC, Epoxy, and PP. It is rated for a temperature range of 100 °C (212 °F). Sold individually.
$158.86
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - PHE-5460-1 is a pH Electrode featuring Flat Surface, In Line, 0 pH to 14 pH, 1 " NPT Male, CPVC, and 100 psi. It is rated for a temperature range of 87 °C (190 °F). Part of the PHE-5460 Series. Sold individually.
$394.43
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
FAQ
- A pH electrode generates a millivolt signal proportional to the hydrogen ion concentration of the fluid (theoretically 59 mV per pH unit at 25°C). The transmitter amplifies that tiny signal, applies temperature compensation, and outputs 4-20 mA or a digital signal the control system can use.
- A combination electrode packages the measuring (glass) electrode and the reference electrode in a single body. Simple, compact, and the standard for almost every industrial application. Separate electrode pairs (measuring and reference as two probes) are mostly used in lab or specialty work where you want to swap one independently. For 95% of plant work, combination is what you want.
- 6 months to 2 years in normal industrial service. Clean cold water gets you the upper end. Hot process, high or low pH extremes, presence of solvents or sulfides, frequent CIP cycles - all of those cut life. Track calibration slope over time and you'll see the death curve coming before the probe actually fails.
- ATC stands for Automatic Temperature Compensation. The pH-to-mV relationship shifts with temperature (roughly 0.2 mV per pH unit per degree C), so a reading taken at 60°C against a calibration done at 20°C will be off. ATC uses an integrated temperature sensor to correct for it in real time. Any industrial pH loop should have it.
- Same answer as row 4: standard buffers at pH 4, 7, and 10. Buy them pre-mixed and NIST-traceable if you need a paper trail. Don't reuse buffer after dipping a probe in it - the cost of fresh buffer is nothing compared to a bad calibration.
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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.