AlpHa Measurement Solutions |
Oxidation-Reduction Potential (ORP) in Pool & Spa
ORP in Pool & Spa
The measurement and control of oxidation-reduction potential (ORP or REDOX) is critical to the safety and comfort of the occupants. ORP measurements are necessary to monitor the disinfection process (or reaction) by chlorine or other oxidants is still in process. If the ORP is too low, it is an indication of high amounts of contaminants in the water. Pool and spa environments measure ORP continuously in larger commercial control systems but may also be measured by a service technician with grab-sample methods. Common performance challenges can be mitigated with the optimal sensor design, in particular the reference junction design, housing material, and sensing element.
- Full Range: -1999 to +1999 mV (meter dependent)
- Accuracy: ±0.1 mV (meter dependent)
- Temperature Range: -5 to 135°C
- 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 option
- Integrated Connectors (detachable or cableless)
