{"id":6138,"date":"2024-02-29T17:17:56","date_gmt":"2024-02-29T16:17:56","guid":{"rendered":"https:\/\/www.klasmeier.com\/produkt\/pt100-typ-d-temperatur-differenz-thermometer-100-c-250-c\/"},"modified":"2025-12-02T15:12:13","modified_gmt":"2025-12-02T14:12:13","slug":"pt100-typ-d-temperatur-differenz-thermometer-100-c-250-c","status":"publish","type":"product","link":"https:\/\/www.klasmeier.com\/en\/produkt\/pt100-typ-d-temperatur-differenz-thermometer-100-c-250-c\/","title":{"rendered":"Pt100 Type D
temperature difference thermometer
(-100 \u00b0C \u2026 250 \u00b0C)"},"content":{"rendered":"\n
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Temperature difference thermometer for determining vertical temperature gradients and precise temperature measurement.<\/p>\n\n\n\n

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<\/i><\/mark> Temperature range: -100 \u00b0C to 250 \u00b0C<\/strong><\/p>\n\n\n\n

<\/i><\/mark> small measurement uncertainties: 6 mK and 11 mK<\/strong><\/p>\n\n\n\n

<\/i><\/mark> Determination of vertical temperature gradients<\/strong><\/p>\n\n\n\n

<\/i><\/mark> Temperature standard and temperature difference thermometer<\/strong><\/p>\n<\/div>\n\n\n\n

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The thermometer for differential temperature measurement is a practical aid for everyday laboratory work. The thermometer makes work easier in the:<\/p>\n\n\n\n

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<\/i><\/mark> Determination of vertical temperature gradients<\/strong>
Vertical temperature gradients must be determined as part of the measurement uncertainty of a calibration (e.g. according to DKD-R 5-4 \u2018Calibration of block calibrators\u2019, DKD-R 5-3 \u2018Calibration of thermocouples\u2019 or DKD-R 5-1 \u2018Calibration of resistance thermometers\u2019).<\/p>\n\n\n\n

<\/i><\/mark> Optimising calibration furnaces
<\/strong>When optimising heating zones on calibration furnaces, such as the 3-zone high-temperature calibration furnace or the Medusa calibration furnace, precise temperature differences must be determined.<\/p>\n\n\n\n

<\/i><\/mark> Precise temperature standard<\/strong>
The main measuring point of the differential thermometer corresponds to the design of the eXacal PT 100 M and can be calibrated with the same measurement uncertainties. This means that the differential thermometer can be used not only to measure temperature differences but also as a temperature standard.<\/p>\n<\/div>\n\n\n\n

The differential thermometer consists of two Pt100 temperature sensors, which are positioned at the bottom of the thermometer and 4 cm apart.<\/p>\n\n\n\n

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Schematic diagram of the differential thermometer<\/figcaption><\/figure>\n\n\n\n
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Measurement uncertainty<\/h3>\n\n\n\n

eXacal thermometers can be calibrated in our own DAkkS calibration laboratory. DAkkS accreditation ensures that all calibrations are traceable to national and international standards.<\/p>\n\n\n\n

The eXacal resistance thermometers are calibrated at ITS-90 fixed points. It is also possible to carry out calibrations using the comparison method in calibration baths and calibration ovens. The measurement uncertainty is calculated from many components. The largest contributions are reproducibility, ITS-90 characteristic curve, self-heating and hysteresis.<\/p>\n\n\n\n

With the differential thermometer, the main measuring point is calibrated at fixed temperature points. The second measuring point is calibrated by a differential measurement at maximum immersion depth in a heat pipe (heating tube furnace) with an extremely good vertical profile. <\/strong><\/p>\n\n\n\n

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<\/i><\/mark> Small measurement uncertainties with DAkkS calibration certificate<\/strong><\/strong><\/strong><\/p>\n\n\n\n

<\/i><\/mark> Temperature fixed points from mercury triple point -38.8344 \u00b0C to tin solidification point 231.928 \u00b0C<\/strong><\/strong><\/p>\n\n\n\n

<\/i><\/mark> Differential measurement in a heat pipe \/ heat pipe furnace<\/strong><\/p>\n<\/div>\n\n\n\n

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Calibration of reference thermometers<\/a><\/div>\n<\/div>\n\n\n\n
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Range<\/strong><\/th>Procedure<\/strong><\/th>Measurement uncertainty<\/strong><\/th><\/tr><\/thead>
-38,8344 \u00b0C \u2013 0,01 \u00b0C<\/td>Mercury to Water<\/td>6 mK<\/td><\/tr>
0,01 \u00b0C \u2013 29,7646 \u00b0C<\/td>Water to Gallium<\/td>6 mK<\/td><\/tr>
0,01 \u00b0C \u2013 156,5985 \u00b0C<\/td>Water to Indium<\/td>10 mK<\/td><\/tr>
0,01 \u00b0C \u2013 231,928 \u00b0C<\/td>Water to Tin<\/td>11 mK<\/td><\/tr><\/tbody><\/table>
The specified measurement uncertainties correspond to k=2, include an ITS-90 characteristic curve and are specified for the respective range.<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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More temperature difference thermometer<\/strong><\/h3>\n\n\n\n
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\"Type
<\/div><\/a><\/div>\n\n\n
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Type R \/ Type S
temperature difference thermocouple
(0 \u00b0C \u2026 1200 \u00b0C)<\/a><\/h2>\n\n
\n\t\t\t\t\t3.615,00 €<\/span><\/bdi><\/span>\n\t\t\t\t<\/div><\/div>\n\n

Manufacturer: Klasmeier \/ eXacal model: Type R\/ Type S difference thermocouple <\/p><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Manufacturer: Klasmeier \/ eXacal model: Pt100D<\/span><\/p>\n","protected":false},"featured_media":11899,"template":"","meta":[],"product_brand":[],"product_cat":[352],"product_tag":[392,393],"class_list":{"0":"post-6138","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-thermometer-fuer-spezialanwendungen-en","7":"product_tag-gradienten-thermometer-en","8":"product_tag-temperaturgradienten-en","10":"first","11":"instock","12":"shipping-taxable","13":"purchasable","14":"product-type-variable"},"_links":{"self":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/product\/6138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/media\/11899"}],"wp:attachment":[{"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/media?parent=6138"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/product_brand?post=6138"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/product_cat?post=6138"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.klasmeier.com\/en\/wp-json\/wp\/v2\/product_tag?post=6138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}