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Produkt-Highlights

JUMO digiLine CR und JUMO digiLine Ci JUMO digiLine CR und
JUMO digiLine Ci
Digitale Messumformer für konduktive und induktive Leitfähigkeitsmessung
  • smarter Sensor zur Leitfähigkeits- und Konzentrationsmessung
  • Kopfmessumformer oder Messumformer mit separatem Sensor
  • Analogausgang, digiLine- oder IO-Link-Schnittstelle
IO-LINK
JUMO BlackLine CR 4P
JUMO BlackLine CR 4P
Konduktiver Vier-Elektroden-Leitfähigkeitssensor
  • großer Messbereichsumfang von 1 μS/cm bis 300 mS/cm
  • zuverlässige Messung auch in druckbeaufschlagten Leitungen bis zu 6 bar
  • passend für jede marktübliche Armatur mit Verschraubung PG 13,5
NEU
 JUMO LOGOSCREEN 700
JUMO LOGOSCREEN 700
Hochskalierbarer Bildschirmschreiber
  • flexibel einsetzbar durch hohe Skalierbarkeit
  • höchste Sicherheit bei der Datenerfassung
  • bis zu 5 flexibel anpassbare Chargenprotokolle
PROFINET


TEMPERATURE MEASUREMENT

What do you need to know about wireless temperature sensors?

Wireless temperature sensors are the solution for measuring temperature in industrial processes when the location is difficult to reach or when there is no fixed location. For example when the sensor is used in a mobile way or whe the locations which need to measured are moving or rotating. A wireless temperature sensor's main advantage is its flexibility and simplicity of use, but it does rely on a separate battery to transmit its measurement values. Learn more about measuring temperature in industrial processes with our wireless temperature sensors!

Table of content

What is a wireless temperature sensor?

A wireless temperature sensor is a resistance temperature sensor with no cable connection. At remote, the temperature values can be visualized through a receiver.

How does a wireless temperature sensor work?

With a wireless temperature sensor, the measured temperature (i.e., resistance) is transmitted from the transmitter to the receiver via a radio frequency of 868.4 MHz. From there, the signal can be further processed in digital or analog form. If desired, the data can be accessed via a web server on both computer, tablet and phone.

Up to how many degrees can a wireless temperature sensor be measured?

The JUMO Wtrans transmitter T01.G1 is used in combination with suitable Wtrans transmitters for mobile or stationary temperature measurement in the temperature range from -30 ... +260°C. The ambient temperature of the electronics in the case may be -30 ... +85°C. A special version can even be used up to +125°C.

What is the range of a wireless temperature sensor?

When the antenna holder with a 3-meter long antenna cable is used on the receiver side, the maximum free range is 300m. in open field.

How reliable is a wireless temperature sensor?

The radio frequency within the ISM band is 868.4 MHz or 915 MHz. These frequencies are highly insensitive to external interference influences and allow for a reliable signal even in an industrial environment.

Which types of wireless temperature sensors are available?

We have the JUMO Wtrans T serie which are RTD temperature probes with wireless data transmission. The T01 measures temperature up to 85°C, the T02 measures temperature up to 125°C and the T03 Ex has the ATEX approval for usage in potentially explosive areas and measures temperature up to 85°. This serie is particulary useful in a number of processes in the food and pharmaceutical industy. Think of temperature measuring in ventilated or closed tanks, cooking or smoking chambers and spray towers. The serie is FDA and EHEDG compliant especially in combination with the PEKA process connection adapter system.

We have the JUMO Wtrans B which is a programmable head transmitter with wireless data transmission. This transmitter especially designed for mounting in form B connection heads (such as the JUMO thermocouple 901020 or the JUMO RTD temperature probe 902020). Because of this design we can connect a wide range of temperature sensors such as: our Pt100, Pt500 or Pt1000 RTD temperature probes (with two-, three- and four-wire circuits) or our thermocouples type B, J, K, L, S and N.

We have the JUMO Wtrans E01 which is a universal wireless measuring probe to measure environment temperature, humidity and CO2. You can connect a single temperature sensor which is a RTD temperature probe Pt1000 and measures temperature from -50 to +150 °C or you can connect a combined humidity/temperature sensor which can measure temperature from -40 to +80 °C and relative humidity from 0 to 100%. The separate CO2 sensor works according to the NDIR infrared principle and can measure CO2 from 0 to 2000/5000/10000 ppm. This wireless measuring probe is particulary useful for climate control applications in green houses, storage and climate rooms, stables, hatchers and incubators or building automation.

Al of the mentioned wireless temperature sensors need a receiver to fetch the measured data and distribute it to a controller, automation system, logger or display. The standard implementation is using the JUMO Wtrans Receiver T01, which is an universal receiver for all the mentioned wireless temperature sensors above. There is also the possibility to connect our wireless temperature sensors directly to our automation system JUMO variTRON 300.

Why do we need a battery in wireless temperatuur sensors?

The battery is used to supply the transmission unit with power, this is nescessary to transmit the measured values from the sender to the receiver.

What is the operating life of the battery?

The operating life of the power sources depends on many factors. The selected transmission interval, the ambient temperature and the installation situation are the central factors here. We use lithium batteries for our wireless temperatuur sensors. The advantages of lithium batteries over conventional alkaline batteries are: higher energy density, higher cell voltage, a much longer shelf life due to the low self discharge characteristics and the wide temperature range for storage and operation. On average and with general conditions the lithium battery for our wireless temperatuur sensors only has to be replaced after one year.