Fiber Optic pH Meter, Use with Microsensors

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Referenced measurements with single excitation

  • Single-channel, compact, easy to transport fiber-optic meter for pH measurements with miniature sensors
  • Two 12-bit, programmable analog outputs, with electrical isolation
  • One external trigger input, with electrical isolation
  • Computer with RS232 interface required for operation
  • Use with Microsensors
  • pH range of the PH-Optica-Micro is 5.5 to 8.5
  • Package of 3 sensors, 2000 measurements per sensor


  • User-friendly software saves and visualizes measure values
  • Several pHOptica meters can be connected to one computer
  • Temperature variation is recorded using a temperature sensor
  • No reference electrode is needed


The pHOptica micro system is a single channel pH system for use with fiber optic micro sensors. The applications include:

  • Penetration or implantation into living tissue (heart, muscle or animal blood vessels)
  • Soil implantation for pH measurement
  • Implantation into customer-made housing

TIP: To protect the small glass fiber tip from breakage, the manufacturer designs suitable housings and tubings around it. The design you choose will be based on your application.

The needle-type housing sensor (502123) protects the fiber in an 18 ga. stainless steel needle. The fiber has to be extended during measurement. It penetrates through the septum.

The implantable sensor (502124 ) has no housing, allowing for implantation into an animal's blood circuits or soil implantation. Build your own housings to suit your needs with this flexible sensor design.

Micro Sensor Features

  • Tip size 140μm
  • Drift of 0.1pH units for 2000 measurements (16 hours measurement in the 30 sec data update mode)
Data Interface RS232
Sample Rate 1 sample per second
Measuring pH Range 5-9
Resolution (at 20°C) ±0.03 (microsensors); ±0.01 (minisensors)
Response Time < 1 min
Dimensions 185 x 110 x 45mm
Weight 630g
Power Supply 100-220V AC
More Choices:
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