AlpHa Measurement Solutions |
Oxidation-Reduction Potential (ORP) in Environmental Monitoring
ORP in Environmental Monitoring
Oxidation-reduction potential (ORP or REDOX) is a measure of whether a sample of water is in an oxidative state or reductive state. Baselining the ORP measurement of a water resource over an extended period of time is important to gain an understanding of what values are normal. ORP can change seasonally as the body of water responds to changes in weather, temperature, flows, and other impacts. Specific applications in environmental monitoring like wastewater effluent, mining operations, agriculture runoff, and stormwater drainage utilize ORP to detect abnormalities. These abnormalities can be further investigated using additional water quality diagnostic tools.
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- Full Range: -1999 to +1999 mV (meter dependent)
- Accuracy: ±0.1 mV (meter dependent)
- Temperature Range: -5 to 135°C
- Tuff-Tip Option
- Custom Mechanical Assemblies Available
- Warranty: 12 Months
- Form Factor
- 12 mm
- Cartridge
- Process Body
- Custom Options Available
- Housing Material Options
- PVC / CPVC
- Ryton® (PPS)
- ABS
- Epoxy
- Polycarbonate
- Kynar® (PVDF)
- Polyethylene
- PEEK
- Teflon™ (PTFE)
- Ultem® (PEI)
- Glass
- Metal
- Stainless Steel
- Other Metals Available
- Metal
- Thermistor Options
- PT100 (type A & B)
- PT1000
- 10 kohm
- 30 kohm
- 100 kohm
- Any commercially available thermistors and custom options
- Common temperature accuracy is ±0.3°C and can vary based on thermistor option chosen
- Reference System
- Ag / AgCl
- Differential
- Custom Options Available
- Reference Junction Options
- Double Junction
- Single Junction
- Custom Options Available
- Reference Junction Material / Design
- Porous Plastic (PTFE / HDPE / PP)
- Ceramic Pin / Annular / Disc
- Fiber / Pellon
- Sleeve Junction / Free Flow (liquid / liquid or ground glass joint)
- Open Aperture
- Solid State
- Custom Options Available
- Solution Ground
- Integrated in Thermowell
- Integrated in Body Housing
- Stand-alone
- Custom Options Available
- Reference Electrolyte
- Sealed
- Soft Gel
- Solid Gel
- Refillable
- Liquid
- Soft Gel
- Custom Options Available
- Sealed
- ORP Sensor Shape
- Disc
- Single Band
- Double Band
- Pin
- ORP Sensor Material
- Platinum
- Gold
- Silver
- Custom Options Available
- Integrated Insertions
- 3/4" NPT
- 1/2" NPT
- 1" NPT
- PG 13.5
- Custom Options Available
- Analog
- Millivolts
- 4 – 20 mA
- 0 – 5 V
- 0 – 10 V
- Custom Options Available
- Custom options available with preamp capabilities
- Digital
- RS-485 MODBUS RTU
- Custom Options Available
- Connectors
- Integrated Connectors (detachable or cableless)
- S7
- S8
- Integrated BNC
- Variopin
- Custom Options Available
- Connectors with Cables (including temperature)
- BNC
- DIN
- MOLEX
- Mil-spec
- 2.5 mm / 3.5 mm phono
- RCA
- Spade Lugs
- Tinned Leads
- LEMO
- Circular connectors
- Any commercially available connectors and custom options available
- Integrated Connectors (detachable or cableless)
