Alpha pH 550 pH/ORP Monitor

  • pH Measurement Range From 0.00 to 14.00 pH
  • Simultaneous Readings Displays pH/ORP with temperature simultaneously
  • Easy-to-Read Display Clear visuals even in dark ambients
Product Options


RS Hydro are UK distributors of the Alpha pH 550 pH/ORP monitor, pH/ORP are measured and displayed with temperature simultaneously on the large LCD screen which provides clear visuals even in dark ambients. Accurate readings are ensured in electrically noisy ambients using the symmetrical mode and at ranging temperatures because the monitor uses Automatic Temperature Compensation which controls fluctuations. Calibration of the Alpha pH 550 is a simple process as the monitor automatically recognises US and NIST buffers.

The Alpha pH 550 pH/ORP monitor can be easily customised and programmed to suit the users individual requirements simply by using the push button panel and has the flexibly to be wall or panel mounted to suit the users needs.

This monitor is covered by a 1 year warranty.

Manufactured by: Eutech Instruments
Model: Alpha pH 550 pH/ORP Monitor

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Range 0.00 to 14.00 pH
Resolution 0.01 pH
Accuracy ±0.01 pH
Range -1000 to 1000 mV
Resolution 1 mV
Accuracy ±1 mV
Range -10.0 to 125.0 °C / 14.0 to 157.0 °F
Resolution 0.1 °C / 0.1 °F
Accuracy ±0.5 °C / ±0.9 °F
Sensor Pt100; 2 or 3 wire
Compensation Auto/manual
Electrical Data And Connections
pH/ORP Input 2-pin terminal; asymmetrical/symmetrical
Connection Terminal 2-pin & 8-pin terminal, detachable blocks; DC jack
LCD 7 segments display with symbols for status information
Power Supply
Input 12 to 24 V DC or 9 V DC
EMC Specifications
Emitted Interference According to EN 61326
Immunity To Interference According to EN 61326
Environmental Conditions
Operating Temperature Range 0 to 40 °C
Max. Relative Humidity 80 % up to 31 °C decreasing linearly to 50 %
at 40 °C
Mechanical Specifications
Dimensions (WxHxD) 96 x 96 x 66 mm
Weight 210 g (unit) / 310 g (packed)
Ingress Protection IP65