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Room temperature probe

€18.42 *

Prices incl. VAT plus shipping costs of 4,95 € to GER (incl. VAT)

Delivery time 4 Workdays to GER (AT +1 workdays)

Repeated order: check settings carefully and change if necessary.
1.Jetzt konfigurieren und bestellen
A - Measuring element

Bitte prüfen Sie, welches Messelement (Thermistortyp oder Pt) für Ihre Anwendung der Passende ist. Wichtige Informationen zum Messelement entnehmen Sie bitte den Kennlinien und Datenblättern. Diese finden Sie in der Langbeschreibung oder in unserem Download-Bereich.

keine Auswahl
(A011) Pt100 Class A
(A012) Pt100 Class B
(A031) Pt1000 Class A
(A032) Pt1000 Class B
(A105) NTC 5 kOhm
(A110) NTC 10 kOhm
(A120) NTC 20 kOhm
(A210) Ni1000
(A323) LM235Z
(A421) KTY 81-210
(A411) KTY 81-110
(A520) DS18B20
B - Connection Type

Bei Zwei-Leiter-Schaltungen addiert sich der Eigenwiderstand der Anschlussleitung zum Widerstandswert des Messwiderstands (Thermistor oder Pt) und verfälscht somit das Messergebnis. Ist der Widerstandswert des Messwiderstands groß gegenüber dem Eigenwiderstand der Anschlussleitung, so kann dieser Eigenwiderstand vernachlässigt werden. Bei Messwiderständen mit geringerem Widerstandswert (z.B. PT100), kann der Leitungseigenwiderstand die Messgenauigkeit jedoch signifikant verringern. Aus diesem Grund empfehlen wir die Zwei-Leiter-Technik in Verbindung mit kleinohmigen Messwiderständen nur dann, wenn Sie vergleichsweise kurze Anschlussleitungen, also kleinohmige Anschlussleitungen, verwenden können.

Für Applikationen, die eine sehr genaue Temperaturmessung erfordern, empfehlen wir Ihnen eine Drei- oder sogar Vier-Leiterschaltung zu verwenden.

Bei der Dreileiter-Schaltung wird der Leitungswiderstand jeder der drei angeschlossenen Leitungen mit Hilfe der dritten angeschlossenen Leitung ermittelt (alle Anschlussdrähte müssen exakt gleich lang sein) und anschließend vom gemessenen Gesamtwiderstand (Messwiderstand+Leitungswiderstand) abgezogen werden, so dass effektiv nur der Widerstandswert des Messwiderstands für die Temperaturbestimmung verwendet wird. Diese Subtraktion kann beispielsweise in der Messelelektronik automatisch durchgeführt werden.

Die sicherste und genaueste Messung erreichen Sie mit Hilfe einer Vierleiter-Schaltung. Hier wird auf jeder Seite des Messwiderstands eine zusätzliche Leitung angeschlossen. Zwei Leitungen dienen der Spannungsversorgung, die zwei anderen werden verwendet, um den Leitungswiderstand (ggf. auch asymmetrisch, also auch bei unterschiedlich langen Anschlussdrähtchen) zu ermitteln und vom Messwiderstandswert abzuziehen. Diese Subtraktion kann beispielsweise in der Messelelektronik automatisch durchgeführt werden.

(B2) 2-Wire
(B3) 3-Wire
(B4) 4-Wire
(B3) 3-Wire
Image Changer
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A - Measuring element:  
B - Connection Type:  
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  • Long-term stable temperature probes over years
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Questions about the article?
Our employee will be happy to help you:
Julian Mäntele
Tel.: +49 (0)7653 96 59 771
E-Mail: jmaentele@testo-sensor.de
Room temperature probes are used so that room temperature-controlled heating and air... more
Product information "Room temperature probe"

Room temperature probes are used so that room temperature-controlled heating and air conditioning systems can react reliably to temperature fluctuations. For this, you need a temperature sensor optimised for room air temperature measurement.

Here you can find our downloads for the Room temperature probe

pdf-download Data sheet Room temperature probe
pdf-download Instruction manual Room temperature probe
pdf-download Operating instruction Room temperature probe
pdf-download Declaration of Conformity Room temperature probe
 

Indoor probe - General Information

Measuring range -30 °C to +90 °C depending on the measuring element and the housing
Perm. temperature range housing -30 °C to +90 °C
Accuracy depending on sensor type
Response time t63 / t99: information is available on request
                                       

Indoor probe - Supply and output

Max. measurement current max. 1 mA
Supply voltage approx. 5 V depending on measurement current
Measurement signal passive (resistance value)
 

Indoor probe - Ambient conditions

Protection class IP20 according DIN 60529
Humidity and moisture condensation resistance according to application-specific qualification
 

Indoor probe - Certificates and Standards

Standards DIN EN 61326-1:2013 | DIN EN IEC 63000:2019-05
Directive RoHS 2011/65/EU | 2014/30/EU
Certificates Certificate of suitability (on request)
 

Indoor probe - Technical Drawing

A - Measuring element
B - Connection type
All dimensions in mm
 

Indoor probe - Measuring element

Measuring element Perm. range °C Accuracy / Tolerance resistance
Pt100 -50 °C to +400 °C Class B dT = ±(0,30 °C + 0,005|t|)1}
Pt100 -50 °C to +300 °C Class A dT = ±(0,15 °C + 0,002|t|)1}
Pt1000 -50 °C to +400 °C Class B dT = ±(0,30 °C + 0,005|t|)1}
Pt1000 -50 °C to +300 °C Class A dT = ±(0,15 °C + 0,002|t|)1}
NTC 5 kOhm -40 °C to +125 °C R25 = 5 KOhm ±1 %
NTC 10 kOhm -40 °C to +125 °C R25 = 10 KOhm ±1 %
NTC 20 kOhm -40 °C to +125 °C R25 = 20 KOhm ±1 %
KTY 81-210 -50 °C to +150 °C R25 = 2 KOhm ±1 %
KTY 81-110 -50 °C to +150 °C R25 = 1 KOhm ±1 %
DS18B20 -55 °C to +125 °C -10 °C to +85 °C: ±0,5 °C | -30 °C to +100 °C: ±1 °C | -55 °C to +125 °C: ±2 °C
LM235Z -40 °C to +125 °C typical ±1 °C
Ni1000 -60 °C to +150 °C -60 °C to 0 °C: dT = ±(0,4 °C + 0,028 · T) | 0 °C to +150 °C: dT = ±(0,4 °C + 0,007 · T)
1} according to IEC 751 / EN 60751 | The permissible measuring range depends on the measuring element and the housing.
 

Indoor probe - Possible connections

Measuring element 2W 3W 4W
NTC Checkmark    
KTY Checkmark    
LM235Z Checkmark    
DS18B20   Checkmark  
NI Checkmark Checkmark Checkmark
Pt Checkmark Checkmark Checkmark
 

Indoor probe - Housing

Material ABS
Dimension (L/W/H) (mm) 75 x 75 x 25
Color white
Cable entry Clamping Range 5 - 9 mm with strain relief
Electrical connection Screw terminals max. 1,5 mm²
 

Indoor probe - Delivery

Assembly instructions by means of screws
Delivery and Packaging Probe, 2 x screw & dowels, seperatly packaged in PE bag
Matching accessories Cable
 

Indoor probe - Important assembly advices

For accurate measurement of the room temperature, it is important to consider the temperature dynamics in the room. Air circulation should take place exclusively through the openings of the housing cover. Therefore, the probe should be installed away from objects or obstacles that shield air movements. Also, please be sure to avoid uncontrolled air currents (drafts) by installing near doors or windows (drafts). In addition, the probe should not be mounted on the colder outside wall.

 

Qualification measurement series to ensure the function of our temperature probes over their service life

Qualifizierungsmessreihe Robust even with temperature changes Temperature probes are exposed to harsh environmental conditions, such as changing temperatures and humidity, and should still work reliably in the field for 15 years or more. Checkmark
Qualifizierungsmessreihe Resistant to heat and humidity Extremely varying ambient conditions cause immense stress for the temperature probe and the design must be suitably robust and qualified.        
Qualifizierungsmessreihe Long-term stable in any weather Continuous exposure to sunlight, snow, fog, cold and ice shall not impair the function of the temperature probe and compliance with the specification.        
Qualifizierungsmessreihe Robust even under high vibration load Depending on the application, compressors and fans generate strong vibrations which are transmitted to components and cables. Therefore the used temperature probes have to be vibration resistant (20g). Checkmark
Qualifizierungsmessreihe Reliable in practice: high pull-out force The robust design ensures the necessary cable pull-out resistance, even under vibration and higher temperatures.        
Qualifizierungsmessreihe Efficient through short response time Depending on the application, short response times may be necessary to ensure efficient control of the system. Our sensor design is optimised for this requirement and we prove response times.        
Qualifizierungsmessreihe Corrosion-resistant even in salt spray Temperature probes are also used in coastal regions. For this reason, the temperature probes must also be able to withstand salty air for a lifespan of 15 years.        
Checkmark

Applicable for this probe type

Eigenschaften
Measuring elements: DS18B20, KTY 81-110, KTY 81-210, LM235Z, Ni1000, NTC 5 kOhm, NTC 10 kOhm, NTC 20 kOhm, Pt100 Class A, Pt100 Class B, Pt1000 Class A, Pt1000 Class B
Connection type: 2-Wire, 3-Wire, 4-Wire
Temperature range: -30 °C to +90 °C
industry: Air conditioning and ventilation technology, Building automation, Heating technology, Refrigeration
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