mikron 91 pH meter

Temperature-compensated pH meter with flow cell and ISFET sensor

As a compact, pressure-resistant pH probe in analytical laboratories or as one of many measuring channels in SMB systems or in process chromatography.
Accurate, temperature-compensated measurement of the pH value. Two measuring cells with different bores to choose from.

Product advantages

small

Regardless of where you take measurements, mikron 91 is right on the spot. With a diameter of 32 mm (1.25 in.) and only 115 mm (4.5 in.) in length, it fits perfectly in every position, either fixed to the side of your system or simply on a laboratory stand.

inexpensive

to purchase and maintain. Thanks to the long-life ISFET sensor, only the robust reference electrode needs to be replaced regularly.
Simply unscrew it and screw in a new one – done in a minute.
This keeps running costs low.

intelligent

The mikron 91 not only stores the calibration data and the operating time of the measuring and reference electrodes, but also the time exposure for each pH range. This makes predictive maintenance easier and reduces your downtimes.

bio-compatible

The metal-free measuring cell consists only of biocompatible materials: PEEK, also available certified in USP Class VI, the ISFET sensor made of SiO2, the KCl reference electrode and seals made of fluororubber.

open

mikron 91 speaks in many ways – on the hard­ware side via USB-C or via industry standard RS-485. We have drivers for all current programs. More­over there is the open Runge protocol for your own im­ple­men­ta­tion.

streamlining

Both versions of the mikron 91 allow a flow rate of up to 1,000 ml/min without building up more than 1 bar (14.5 psi) back pressure. A third access to the liquid path makes calibration easier. And the cell can easily withstand 20 bar.
Download data sheet

Versions

analytical, 1 mm bore diameter

Sensors pH measure ISFET
pH reference KCl or Ag/AgCl
temperature Pt-1000
pH display range (1) 0 ... 14 (2)
linear range 2 ... 12
resolution 0.001
accuracy ±0.1
sampling rate 1 ... 10 Hz
Temperature display range 0 ... 100 °C
resolution 0.1 °C
accuracy ±0.2 °C
Liquid path bore ID = 1.0 mm
dwell volume 60 µl
flow rate up to 1,000 ml/min
back pressure 1 bar at 500 ml/min (3)
(1) with substance-dependent temperature compensation
(2) Service life reduced outside pH 1...13
(3) distilled water at 20 °C (68 °F)
Process temperature 5 ... 80 °C
pressure 20 bar (290 psi)
Liquid path ports 1/4″-28 UNF flat-bottom
Materials cell body PEEK (4)
wetted PEEK (4), SiO2, FKM
Interface USB-C or RS-485 (data, energy)
Power electrical < 2,5 W ( < 500 mA at 5 V)
Protocol open, text-based
Drivers DataApex Clarity, SCPA PrepCon, LabView (5)
Markings CE, UKCA
(4) PEEK in USP class VI and TSE-free
(5) All registered trademarks are the property of their respective owners.

preparative, 2.2 bore diameter

Sensors pH measure ISFET
pH reference KCl or Ag/AgCl
Temperature Pt-1000
pH display range (1) 0 ... 14 (2)
linear range 2 ... 12
resolution 0.001
accuracy ±0.1
sampling rate 1 ... 10 Hz
Temperature display range 0 ... 100 °C
resolution 0.1 °C
accuracy ±0.2 °C
Liquid path bore ID = 2.2 mm
dwell volume 100 µl
flow rate up to 1,000 ml/min
back pressure < 1 bar at 500 ml/min (3)
(1) with substance-dependent temperature compensation
(2) Service life reduced outside pH 1...13
(3) distilled water at 20 °C (68 °F)
Process temperature 5 ... 80 °C
pressure 20 bar (290 psi)
Liquid path ports 1/4″-28 UNF flat-bottom
Materials cell body PEEK (4)
wetted PEEK (4), SiO2, FKM
Interface USB-C or RS-485 (data, energy)
Power electrical < 2,5 W ( < 500 mA at 5 V)
Protocol open, text-based
Drivers DataApex Clarity, SCPA PrepCon, LabView (5)
Markings CE, UKCA
(4) in USP class VI and TSE-free
(5) All registered trademarks are the property of their respective owners.
Download data sheet

Main menu