pH and ORP

When it comes to determining water quality as part of your application or process, pH and Oxidation Reduction Potential (ORP) are among the most critical and insightful measurements.

From simple end-point values through continuous readings in the harshest, most strictly regulated environments, choose Thermo Scientific, and our Orion and AquaSensors brands in your pH and ORP measurements.

Online pH and ORP categories

Extensive array of sensing technologies, signal types, and more, along with the performance to support your operations.

Thermo Scientific AquaSensors and Orion sensors provide real-time, accurate pH/ORP measurements and more across your facility. With options ranging from high performance to budget friendly, increase efficiency and confidence while saving time, resources, and money. For control, look to our plug-and-play, fully configurable DataStick online sensors. 

 

AquaSensors
DataStick pH Measurement System
AquaSensors
DataStick ORP Measurement System
AquaSensors
AnalogPlus Differential pH and ORP Sensors
Orion
pHR Process ROSS Electrode
Orion
2001SC ROSS combination pH Electrode
 ph-datastick
ph-analog-plus
phr-process-electrode
pH-combination
Key FeaturespH Measurement with digital communication capabilityORP Measurement with digital communication capabilityConventional pH electrode for challenging applicationsFast response, drift free reference system with stable measurementFast response, drift free reference system with stable measurement 
Measurement SpecificationsAccuracy0.1% of the reading0.1% of the reading0.1% of the reading0.1 pH0.02 pH
Range0-14 pH-2100 mV to +2100mV0-14 pH, ORP-2100 mV to +2100 mV0-14 pH0-14pH
Resolutionxx.xxxxxx.xxx.xx/xxxx.xxx.xxxx.xx
Sensors• PEEK /CPVC Sensor body
• Titanium ground rod
• Viton -O- ring
• Standard glass / HF resistant glass electrode/gold/platinum electrode for ORP
• 1"NPT
• PT1000 RTD temperature sensor
• Replaceable salt bridge
• Modbus RTU/ethernet/USB built in communications
• PEEK / CPVC sensor body
• Titanium ground rod,
• Viton -O- ring
• Standard glass / HF resistant glass electrode for pH
gold/platinum electrode for ORP
• 1"NPT, 1-1/2"NPT
• PT1000 RTD
• NTC300
• Replaceable salt bridge
• PEEK sensor body
• Titanium ground rod
• Viton -O- ring
• Standard glass / HF resistant glass electrode
• 1"NPT
• PT1000
• RTD Combintational / differential electrode type
• Replaceable salt bridge
• Glass electrode
• Ceramic liquid junction
• Installed in stainless steel (316) flow cell with mounting bracket
• Sidearm for attachment to a reservoir ceramic liquid junction
Application• Wastewater treatment
• Metal finishing
• High purity water
• Odor scrubbers
• Pharmaceutical
• Chemical & petrochemical
• Reverse osmosis
• Cooling tower control
• Food processing
• Wastewater treatment
• Metal finishing
• Bleaching pulp
• Disinfection control
• Waste water treatment
• Pharmaceutical
• Chemical and petrochemical
• High purity water
• Food processing
• Metal finishing
• Wastewater treatment
• Industrial water treatment
• Drinking water treatment
• Ultra pure water
• Boiler Water
• Condensate
• Bottling Water Municipal Water
• Water for Injection • Water for Fabrication
Associated controller/transmitter• Can be connected directly to DCS/PLC
• Aquapro
• AV38
• Aquapro
• AV88
• Alpha 2000 series*
• Orion 2100 Series
• Aqua pro
• AV88
• Alpha 2000 series*
Mounting accessories- Options• 1", 1-1/2" Tee
• Union & ball valve SS 316 & CPVC fittings
• Immersion mounting with hand rail swivel mounting and PVC junction box
• 1", 1-1/2", 2" Tee
• Union & ball valve SS 316 & CPVC fittings
•  Immersion mounting with hand rail swivel mounting and PVC junction box
• SS 316 & CPVC fittings
• 1" Tee,
• 1-1/2" Union,
• 1-1/2" ball valve
• PVC junction box
• SS316 Flow cell (Mandatory part of the measuring system)
Catalog #QuoteQuoteOrderOrderOrder

 

AV38 AV88AquaProOrion 2100 SeriesAlpha 2000 Series*
Input sensor typeDigital (Data stick version)                  Analog via the personality moduleDigital (Data stick version) / AnalogAnalog version onlyAnalog version only
ChannelsTwo sensors for MODBUSOne sensorUpto 4 SensorsUpto 2 SensorsOne sensor
Supported sensors• pH
• ORP
• Conductivity
• Dissolved oxygen
• Dissolved ozone
• Turbidity
• Suspended solids
• With automatic temperature compensation (ATC) wherever applicable 
• pH
• ORP
• Conductivity (includes resistivity, concentration, salinity and TDS)
• Dissolved oxygen
• Dissolved ozone
• Turbidity
• Suspended solids
• With automatic temperature compensation (ATC) wherever applicable
• pH
• ORP
• Conductivity (includes resistivity, concentration, salinity and TDS)
• Sodium
• Flouride
• Chloride
• Calcium Hardness, Oxygen Scavenger, Ammonia
• With automatic temperature compensation (ATC) wherever applicable
• pH
• ORP
• Conductivity
• Dissolved Oxygen
• With automatic temperature compensation (ATC) wherever applicable.
Outputs• 4-20mA active - 2
• Relay ouputs - 2; 1.0 Amp, dry contacts
• 0/4-20mA active - up to 8
•  Relay ouputs - 3 (up to 6); 5.0 Amp, dry contacts
• Outputs can be used for basic PID
• Optional: MODBUS RTU
• MODBUS RS 232 DeviceNet
• Ethernet/IP
• CANopen
• 0/4-20mA active - 4
• Relay ouputs - 3; 5.0 Amp, dry contacts
• Optional: MODBUS RTU    
• 0/4-20mA active - 2 • Relay ouputs - 2; 3.0 Amp, dry contacts                    • Wash relay -1
• Hold relay -1
• Alarm relay -1
• Relays can be used for P/PI controller
Input Power supply• 10 to 30 VDC
• Optional or 100 to 240 VAC 
• 10 to 30 VDC
• Optional or 100 to 240 VAC 
• 24 VDC
• Optional or 100 to 240 VAC
• 100 to 120 VAC and  200 to 240 VAC• 80 to 250 VAC
User interface2 line by 16 character back lit LCD display  with keys for menu navigation2 line by 16 character back lit LCD display  keys for menu navigation• Display: 4.3 Inch color graphics with high contrast
• 7 Key menu navigation
• USB
• Multiple languages 
Large bright backlit LCD provides a 3 line parameter display• Backlit 14 segments display with symbols for status information, with keys for menu navigation
• On/Off selectable with four levels of brightness control
Enclosure type• NEMA 4X
• Wall mount
• Panel mount ¼ DIN
• Panel mount ½ DIN
• Wall mount; NEMA 4X
• Panel mount: ¼ NEMA 4X
• Panel mount ½ DIN NEMA 4X
• NEMA 4X
• Pipe mount• Panel mount
• Wall mount
• UV resistant poly carbonate
• NEMA 4X
• ½ DIN panel mount
• Pipe mount
• NEMA 4X
• ½ DIN panel mount • Pipe mount wall mount
Catalog #QuoteQuoteQuoteOrderOrder

*Only available in North America


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