PH850-HT pH meter for high temperature and caustic solutions

Plus 19% MwSt. DE
SKU: AI5564 Categories: , , , Tag:

The PH850-HT from Apera Instruments is a handy and easy-to-use meter for the determination of pH, ORP (electrode sold separately e.g. 301Pt-C) and temperature. It is ideal for making precise and reliable measurements of high-temperature solutions (up to 130°C) and caustic solutions. The included LabSen® 861 pH electrode is equipped with a special PSY glass membrane, which is highly resistant to chemical corrosion and maximizes the reliability and lifetime of the electrode when measuring complex and high-temperature solutions. An MP500 temperature sensor is included in the set for temperature measurement. The PH850-HT is protected by a silicone cover and is waterproof and dustproof (IP57), making it particularly well suited for field use, even in harsh environments.

  • Equipped with the LabSen® 861 pH electrode for high-temperature and alkaline solutions
  • Silicone case provides safe & firm grip and protects from shocks
  • Waterproof and dustproof (IP57) for use in harsh environments
  • Fold-out stand for convenient indoor operation
  • Quick and easy 1- to 3-point calibration
  • Large, illuminated LCD simultaneously displays conductivity value and temperature, as well as additional measurement and calibration information
  • Self-diagnosis supports calibration or troubleshooting

The meter is RoHS and EC certified and has a 3 year warranty (6 months on the electrode).


The LabSen® 861 pH electrode from Apera Instruments is manufactured using proprietary Swiss sensor technology and materials. It was specially developed for the measurement of high temperature (up to 130°C) – and caustic solutions, such as electroplating solutions. The special PHY membrane is highly resistant to chemical corrosion and maximizes the reliability and lifetime of the electrode when measuring complex and high temperature solutions.

This electrode has the following features:

  • Patented pH sensor technology and materials from Switzerland
  • Especially for pH measurement of high-temperature solutions (up to 130°C) and caustic solutions
  • Silver ion trap reference system prevents contamination of the electrode
  • The PTFE diaphragm prevents the connection from being clogged by complex chemicals
  • Blue gel electrolyte, does not flow and does not cause air bubbles
Measuring range 1-13 pH Storage solution 3M KCL
Recommended operating temperature 0-130 °C Diaphragm type PHY
Shank material Lead free glass Diaphragm resistance <500MΩ
Reference system Silver ion trap Dimension of the electrode ∅12×120 mm
Diaphragm PTFE Connection BNC
Electrolyte Gel KCL Cable ∅3mm × 1m

Technical Specifications

pH Measuring range 0.00 to 14.00 pH
Resolution 0,1/0,01
Accuracy ±0.01 ±1 digit
calibration 1 to 3 points, automatic
Temperature compensation 0 to 100 ° C (automatic or manual)
mV Measuring range ±1000 mV
Resolution 1 mV
Accuracy ±0.2 % F.S. ± 1 digit
Temperature Measuring range 0 to 100 °C
Resolution 0,1 °C
Accuracy ±0.5 °C ±1 digit
More Power supply 3 x AA batteries
IP rating IP57
Electrode connection BNC (for pH and ORP), RCA (for temperature)
Dimensions / Weight 88×170×33 mm / 313 g

with case: 360×270×76 mm / 1.3 kg

scope of delivery

A complete set contains:

  • PH850 pH meter
  • LabSen® 861 pH electrode
  • Calibration solution (pH 4.00; pH 7.00; pH 10.01) 50ml each
  • Screwdriver
  • manual
  • Carrying case


German PH850 DE Apera LabSen 861 DE
English PH850 EN Apera LabSen 861 EN