Thermocouple with Lagging Extension, Process Connection, Cooling Neck & Terminal Head
The PPL5-T thermocouple with lagging extension is suitable for the measurement of liquids and gases across a wide temperature range of -50 to 250°C.
All wetted parts of the thermowell lagging extension are normally made from 316 stainless steel and are TIG welded to give a pressure-tight housing for the sensor. Many metric and imperial probe diameters are available from 3mm upwards. Many thread types are available which are generally BSP, BSPT or NPT types but we can supply others to your requirements such as Metric, UNF etc.
We stock a variety of terminal heads that cover all eventualities for the thermocouple sensor. The most popular is the aluminium alloy KNE head which is commonly used in the industry.
We do however also offer other materials such as ABS, Nylon, FDA approved Polypropylene and of course 316 stainless steel for the most demanding applications. Most of our terminal heads have IP ratings of IP67 or IP68.
We can fit a number of options inside the terminal heads that best fit your requirements. The simplest is a terminal block allowing you to connect directly to the sensor. Alternatively, we can supply temperature transmitters with either a 4-20mA or a 0-10V output. Other options include intrinsically safe transmitters or those with HART protocol. We can also fit in head displays if required.
Additional Information About Thermocouple With Lagging Extension
The PPL5-T is ideal for direct installation into your process or for use with our PPL51-TW pocket. The temperature sensor is also available as a PPL5 resistance thermometer. We are also able to supply the thermocouple probe with your choice of thermistor sensor.
We offer a comprehensive calibration service and a wide choice of accessories for your thermocouple temperature sensor.
Our PPL5-T lagging extension thermocouple is made to order based on your application. If you’d like more information on any of our sensors, please contact us for a quote.
Frequently Asked Questions
What is a Thermocouple?
A thermocouple is a temperature sensor that consists of two different metal wires joined together at one end, known as the sensing junction. When the sensing junction is exposed to a temperature gradient, it generates a voltage proportional to the temperature difference. This voltage is referred to as the thermoelectric voltage.
Thermocouples are commonly used for temperature measurement in various industrial and scientific applications. They are known for their simplicity, durability, and wide temperature range capabilities. Different types of thermocouples, such as Type J, K, T, and others, are designed to operate within specific temperature ranges and environments.
Related: What is a Thermocouple?
What is a Thermocouple With Lagging Extension?
A thermocouple with lagging extension refers to a type of thermocouple setup that includes an additional length of thermocouple wire known as the “lagging extension.” The purpose of the lagging extension is to extend the distance between the sensing junction (where the temperature is being measured) and the point where the thermocouple wires are connected to the temperature-measuring device or control system.
This configuration is often employed in situations where the temperature measurement instrument or control system needs to be located some distance away from the actual measurement point. The lagging extension allows for flexibility in positioning the temperature sensor while maintaining accurate temperature readings.
