WTW TFK 325 Temperature Probe for Aqueous Solutions, 1 m Cable, 102280

The pH value of a sample depends on its temperature, and electrodes without their own sensor do not indicate this temperature. This is what the WTW TFK 325 is designed for. It measures the temperature in aqueous solutions and transmits it to the measuring instrument, which then automatically compensates for it.

Why the probe is necessary

The slope of a pH measuring chain changes with temperature. A measuring instrument can only compensate for this effect if it knows the sample temperature. The temperature of the sample should therefore be measured at the point where the electrode is located, and the sensor must be immersed in the sample.

Design and connection

The sensor has a 1 m long fixed cable with a waterproof connector, so there is no need to purchase a separate cable. You should check before ordering whether the temperature input on your meter is compatible with the TFK 325.

For electrodes without their own temperature sensor

Automatic temperature compensation is used for pH, redox and ISE measurements. An example: The SenTix 62, for instance, is a glass electrode without a temperature sensor. The SenTix ORP redox electrode also does not have a sensor. The TFK 150 is also available from the same sensor range.

Typical applications

• Automatic temperature compensation for pH, ORP and ISE measurements in aqueous solutions
• External temperature probe on conductivity cells and on the D 300/pH flow-through cell

Technical details

Scope of delivery

• 1 WTW TFK 325 temperature probe with 1 m cable

Individual requirements and procurement service

You can check whether the temperature input on your measuring instrument is compatible with the TFK 325 before placing your order. Please direct any enquiries regarding this or suitable pH electrodes to the procurement service at lt-laborhandel.com/service.