Ion-Sensitive Field Effect Transistor MSFET

Designed for use with a ceramic based, printed circuit board (PCB). Ion Selective Field Effect Transistors (ISFETs) are particularly helpful for measuring pH and other ions in small volumes and they can be integrated in compact flow cells for continuous measurements. ISFETs work by capacitive measurement of charged species on insulating surfaces

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Availability: Commercially Available

Alain Grisel
alain.grisel@microsens.ch
+41 327 205161
Rue Jaquet-Droz 1 – 2007
Neuchâtel
Switzerland
www.microsens.ch
Manufacturer
Microsens SA
Product Name
Ion-Sensitive Field Effect Transistor MSFET
Detection Category
Chemical
Detection Principle
Sensors;
Detection Method
Electrochemical Detection ;
Application
Emergency Response; Gas Analysis;
Equipment Type
Sensor
Product Synopsis
Designed for use with a ceramic based, printed circuit board (PCB). Ion Selective Field Effect Transistors (ISFETs) are particularly helpful for measuring pH and other ions in small volumes and they can be integrated in compact flow cells for continuous measurements. ISFETs work by capacitive measurement of charged species on insulating surfaces
Availability
Commercially Available
Technology Readiness Level (TRL)
9
User Feedback Sources
Indifferent/No user feedback
Dimensions
0.24 x 0.17 x 0.012 in (6 x 4.5 x 0.3 mm)
Weight
<30 lbs.
Transportability
Pocket Size
Operating Conditions
-45 to 120°C
Calibration Schedule
Yes
Available Accessories
Ref Electrode unit price about $200.
Data Analysis Support Equipment
A hermetically sealed PCB (Printed Circuit Board) as well as DIL (Dual ln Line) standard package, are available. PCB or Kapton based circuits boards are used for the packaging of pH sensors in 2 mm diameter catheters.
Unit Cost
$120.00
Other Chemical Targets
Measures pH, potassium ions, calcium ions, magnesium ions, and other ions, pCO2
Sample Introduction
Liquid
Start Up Time (From Cold Start To Sample Ready)
The sensor with its Ref Electrode will take about 30 minutes to stabilize from dry, the first time they are put in water. Reaction to pH changes is then instantaneous!
Response Time (Sample Application To Output)
Continuous (<30 seconds); pH 1-12 K+ 10-7 – 1 (M) Ca2+ 10-6 – 1 (M)
Software Control
An interface of dedicated electronics may be purchased to provide a voltage signal linear to pH value. A digital output can be implemented with an A/D converter and a microcontroller. Software will depend on application.
Other Operational Parameters
50 mV/pH, 58 mV/pK, 30 mV/pCa
Training Required
>1 week training
Manuals Available
Application notes are available
Warranties
The manufacturer does not give any warranty for the devices without a complete understanding or knowledge of the client’s measurement system.
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