{"id":3411,"date":"2024-04-02T13:33:14","date_gmt":"2024-04-02T11:33:14","guid":{"rendered":"https:\/\/www.klasmeier.com\/thermoelement-vergleichsstellen\/"},"modified":"2026-05-12T15:34:10","modified_gmt":"2026-05-12T13:34:10","slug":"thermoelement-vergleichsstellen","status":"publish","type":"page","link":"https:\/\/www.klasmeier.com\/en\/shop\/thermoelement-vergleichsstellen\/","title":{"rendered":"Efficient Thermocouple Reference Junctions"},"content":{"rendered":"\n
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Thermocouple Reference Junctions<\/strong><\/strong><\/h1>\n\n\n\n
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Thermocouples are commonly used temperature sensors in industry. The Seebeck effect is utilized for temperature measurement with a thermocouple. <\/p>\n\n\n\n

Thomas Johann Seebeck accidentally discovered that an electrical voltage is generated between two ends of a metal rod if there is a temperature difference (temperature gradient) within the rod. After connecting both ends, an electrical current flowed, the magnetic field of which he detected with a compass needle. In 1821, Thomas Johann Seebeck succeeded in utilizing this effect in an early thermocouple. <\/em><\/p>\n\n\n\n

The Seebeck effect generates an electrical voltage between two points of an electrical conductor that have different temperatures.<\/strong> To measure the electrical voltage of a thermocouple, the thermocouple cable is connected to a universal measuring device. The connection material in measuring devices usually consists of copper. This means it is a different material than that of the thermocouple. When connecting the thermocouple to the measuring device, two new thermocouples are created!<\/strong><\/p>\n<\/div>\n\n\n\n

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The use of a reference junction prevents errors in measurement results.<\/strong><\/p>\n\n\n\n

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Reference junction temperature 0\u00b0C, 25\u00b0C, 45\u00b0C or 70\u00b0C<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Typically, the temperature of the transition point from thermowire to extension wire is measured and electrically compensated as a reference junction. The knowledge of the reference junction temperature is a factor in the accuracy of thermocouple temperature measurement. <\/strong><\/p>\n\n\n\n

Thermocouples always measure a comparison between a “hot” and a “cold” measuring point. If the “cold” measuring point is always kept at a known, stable temperature (e.g., 0 \u00b0C), this directly contributes to the precision of the temperature measurement. A calibrated Pt100 temperature sensor monitors the reference junction temperature. <\/p>\n\n\n\n

This reference junction is also called cold junction compensation, CJC, thermocouple reference junction, reference junction compensation, or ice point thermostat.<\/p>\n<\/div>\n\n\n\n

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Pre-fabricated Reference Junctions<\/h3>\n\n\n\n
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Single Reference Junction \u2013 only the copper-nickel leg is compensated(Recommended only for Type T thermocouples)<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n\n
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Double Reference Junction \u2013 both legs are compensated<\/strong><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n
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Find Your Suitable Thermocouple Reference Junction<\/h2>\n\n\n\n
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Ice Point Thermostat TRU Model 938<\/a><\/h3>\n<\/div>\n\n\n\n
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The TRU 938 ice point thermostat provides a stable and accurate 0 \u00b0C (or an elevated) reference temperature. It is a self-contained unit with Peltier technology, enabling maintenance-free operation. <\/p>\n\n\n\n

Advantages of the Ice Point Thermostat:<\/strong><\/p>\n\n\n\n

<\/i><\/mark> suitable for laboratory use<\/strong><\/i><\/mark> high capacity<\/strong><\/i><\/mark> suitable for high ambient temperatures <\/strong>(up to 65 \u00b0C)<\/strong><\/i><\/mark> robust design<\/strong><\/p>\n<\/div>\n\n\n\n

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To the Ice Point Thermostat TRU 938<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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Equipped Ice Point Thermostat TRU Model 937<\/a><\/h3>\n<\/div>\n\n\n\n
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The TRU 937 ice point thermostat provides stable and accurate 0 \u00b0C or an elevated reference temperature between 45 \u00b0C and 70 \u00b0C.<\/p>\n\n\n\n

Advantages of the Equipped Ice Point Thermostat:<\/strong><\/p>\n\n\n\n

<\/i><\/mark> for up to 100 reference junctions<\/strong><\/i><\/mark> compact design<\/strong><\/i> <\/mark>desired reference temperature adjustable<\/strong><\/i><\/mark> number and type of thermocouples for equipping selectable<\/strong><\/i><\/mark> Connection via Klippon terminals or according to customer requirements <\/strong>(e.g., mini plugs)<\/i><\/mark> for use in high ambient temperatures<\/strong><\/p>\n<\/div>\n\n\n\n

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To the Ice Point Thermostat TRU 937<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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Ice Point Thermostat for Control Cabinets Model TRUrac 847<\/a><\/h3>\n<\/div>\n\n\n\n
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The TRUrac is a thermocouple reference system for 0 \u00b0C or elevated temperatures, mounted in a 19\u2033 housing. It was developed for situations where the ambient temperature can be up to 65 \u00b0C. <\/p>\n\n\n\n

Advantages of the Ice Point Thermostat for Control Cabinets:<\/strong><\/p>\n\n\n\n

<\/i><\/mark> Mounted rack: 19″ chassis with integrated TRU 937 ice point thermostat <\/strong><\/i><\/mark> for installation in control cabinets<\/strong><\/i><\/mark> high capacity up to 200 double reference junctions<\/strong><\/i><\/mark> Connection via Klippon screw terminals or according to customer requirements<\/strong><\/i><\/mark> standardized chassis fits into commercially available control cabinets<\/strong><\/i><\/mark> proven in power plants<\/strong><\/p>\n<\/div>\n\n\n\n

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To the Ice Point Thermostat TRUrac 847<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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Reference Junction as Heating Block with Defined Temperature Model Hotbox 830<\/a><\/h3>\n<\/div>\n\n\n\n
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The Hotbox is housed in a robust, waterproof IP66 enclosure and features a base plate.<\/p>\n\n\n\n

Advantages of the Reference Junction:<\/strong><\/p>\n\n\n\n

<\/i><\/mark> predefined reference temperature between 45 \u00b0C and 70 \u00b0C<\/strong><\/i><\/mark> for use in very high ambient temperatures <\/strong>(max. 50 \u00b0C) and harsh environments<\/strong><\/i><\/mark> stability 0.05 \u00b0C<\/strong><\/i><\/mark> splash-proof housing<\/strong><\/i><\/mark> high capacity \u2013 up to 200 reference junctions<\/strong><\/i><\/mark> proven in power plants<\/strong><\/p>\n<\/div>\n\n\n\n

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To the Hotbox 830 Reference Junction<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
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Reference Junction as Ice Point Compensation Model Isobox 842<\/a><\/h3>\n<\/div>\n\n\n\n
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Advantages of the Reference Junction:<\/strong><\/p>\n\n\n\n

<\/i><\/mark> effective temperature 0 \u00b0C<\/strong><\/i><\/mark> for use in ambient temperatures<\/strong> between -20 \u00b0C and 70 \u00b0C<\/strong><\/i><\/mark> stability 0.05 \u00b0C<\/strong><\/i><\/mark> splash-proof housing (IP669 protection class)<\/strong><\/i><\/mark> up to 100 reference junctions<\/strong><\/i><\/mark> proven in power plants<\/strong><\/p>\n<\/div>\n\n\n\n

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To the Isobox 842 Reference Junction<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n
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Nicht das richtige Produkt f\u00fcr Sie?<\/h2>\n\n\n\n
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-> Hier geht’s zur\u00fcck zur \u00dcbersicht<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Thermocouple Reference Junctions Thermocouples are commonly used temperature sensors in industry. The Seebeck effect is utilized for temperature measurement with a thermocouple. Thomas Johann Seebeck accidentally discovered that an electrical voltage is generated between two ends of a metal rod if there is a temperature difference (temperature gradient) within the rod. After connecting both ends, […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":3420,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3411","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/pages\/3411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/comments?post=3411"}],"version-history":[{"count":9,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/pages\/3411\/revisions"}],"predecessor-version":[{"id":14971,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/pages\/3411\/revisions\/14971"}],"up":[{"embeddable":true,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/pages\/3420"}],"wp:attachment":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/media?parent=3411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}