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ORP Meter Rentals

Our ORP meters are useful in either the field or the lab for quick and easy ORP measurements. We carry models with optional 100 foot extension cables or RS232 outputs for direct connection to a printer or PC.

Thermo Scientific Orion 250A

ORP/Temp Meter

Thermo Scientific Orion 250A

Although useful in the field, the Orion 250A is excellent for labratory measurements due to its RS232 serial port with the ability to directly connect to a printer or pc for data reporting and logging. The serial port can even be used to control the instrument remotely. The 250A can store readings with the push of a button and simultaneously displays both ORP and temperature. Like all of our ORP rentals, it comes calibrated and ready for use.

-1600 to 1600 mV
Resolution 0.1 mV
Accuracy ±0.2 mV or ±0.05%
23 to 221°F
-5 to 105°C
Resolution 0.1°
Accuracy ±1.8°F or ±1°C
  • Handheld ORP meter with temperature
  • Provides quick and easy ORP measurements
  • Datalogging
  • PC interface
  • Printer interface
  • LCD display
  • Remote control input
  • Datalogging points 25
  • PC interface RS232
  • Printer interface RS232
  • Digital output RS232
  • Remote control RS232
  • Input power 9V alkaline or lithium battery
  • Runtime 50 hours alkaline, 100 hours lithium
  • Operating temperature 41 to 114°F
  • Dimensions 2.5″ x 1.9″ x 7.6″
  • Weight 12 oz
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Field Supplies

Every ORP rental comes calibrated and ready for use.
If you need to perform additional calibrations solutions are available below.

Search Terms

  • Water Quality
  • ORP Meters
  • Thermo Scientific Orion 250A
  • Orion 250-A
  • Orion 250 A

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Did you know that Equipco also sells environmental field supplies?

Whether you need calibration standards, tubing, or other supplies like gloves and labels, we stock everything you need to finish the job. Our high quality field supplies, including NIST traceable calibration solutions and gases, come at significant savings over manufacturer brands.

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Did you know that Equipco also sells used equipment?

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