{"id":6805,"date":"2026-07-17T16:56:56","date_gmt":"2026-07-17T16:56:56","guid":{"rendered":"https:\/\/europascal.de\/product\/fluke-calibration-5610\/"},"modified":"2026-10-12T09:30:47","modified_gmt":"2026-10-12T09:30:47","slug":"fluke-calibration-5610","status":"publish","type":"product","link":"https:\/\/europascal.de\/en\/product\/fluke-calibration-5610\/","title":{"rendered":"Fluke Calibration 5610 Precise Reference Thermistor"},"content":{"rendered":"<p>The <strong>Fluke Calibration 5610<\/strong> is a high-precision secondary reference thermistor designed for accurate and reliable temperature measurements in calibration laboratories, industrial applications and temperature metrology. Featuring a temperature range from <strong>0 \u00b0C to +100 \u00b0C<\/strong>, a nominal resistance of <strong>10,000 \u03a9 at 25 \u00b0C<\/strong> and calibrated accuracy of <strong>\u00b10.01 \u00b0C<\/strong>, the Fluke Calibration 5610 provides excellent performance for demanding reference temperature measurements.<\/p>\n<p>Unlike conventional platinum resistance thermometers, the Fluke Calibration 5610 uses a negative temperature coefficient (NTC) thermistor. Its electrical resistance decreases as temperature increases, providing excellent temperature sensitivity over a relatively narrow measurement range.<\/p>\n<p>The Fluke Calibration 5610 features a robust stainless steel sheath with a diameter of only <strong>3.2 mm (1\/8 inch)<\/strong>. Two probe lengths are available: <strong>152.4 mm (6 inches)<\/strong> and <strong>228.6 mm (9 inches)<\/strong>.<\/p>\n<p>The compact design makes the instrument particularly suitable for precision temperature measurements in calibration baths, laboratory equipment and temperature-controlled environments.<\/p>\n<p>Each Fluke Calibration 5610 is supplied with an individual resistance-versus-temperature calibration table and an interpolation equation. The manufacturer specifies calibration accuracy of \u00b10.01 \u00b0C, repeatability better than \u00b10.005 \u00b0C and annual drift better than \u00b10.01 \u00b0C.<\/p>\n<p>The included calibration is traceable to NIST standards. An accredited calibration is available as an option.<\/p>\n<p>When combined with a suitable precision thermometer readout, such as the Fluke Calibration 1504, 1523 or 1524, the Fluke Calibration 5610 provides a highly accurate temperature measurement system.<\/p>\n<p>At <strong>europascal<\/strong>, the Fluke Calibration 5610 offers a professional solution for precision temperature calibration, reference measurements and laboratory temperature monitoring.<\/p>\n<p>For professional calibration and metrological traceability, visit the <a href=\"https:\/\/europascal.de\/en\/calibration-services\/\">europascal Calibration Service<\/a>.<\/p>\n<h2>Your Benefits at a Glance<\/h2>\n<ul>\n<li>High-precision secondary reference thermistor<\/li>\n<li>Temperature range from 0 \u00b0C to +100 \u00b0C<\/li>\n<li>Calibrated accuracy of \u00b10.01 \u00b0C<\/li>\n<li>Repeatability better than \u00b10.005 \u00b0C<\/li>\n<li>Annual drift better than \u00b10.01 \u00b0C<\/li>\n<li>Nominal resistance of 10,000 \u03a9 at 25 \u00b0C<\/li>\n<li>Negative temperature coefficient (NTC)<\/li>\n<li>Excellent temperature sensitivity<\/li>\n<li>Stainless steel probe sheath<\/li>\n<li>Slim 3.2 mm probe diameter<\/li>\n<li>Available in 152.4 mm and 228.6 mm lengths<\/li>\n<li>Minimum immersion depth of approximately 76 mm<\/li>\n<li>Suitable for liquid calibration baths<\/li>\n<li>Suitable for laboratory temperature measurements<\/li>\n<li>Suitable for temperature comparison calibration<\/li>\n<li>Individual resistance-temperature calibration table<\/li>\n<li>Calibration values in 0.1 \u00b0C increments<\/li>\n<li>Interpolation equation included<\/li>\n<li>NIST-traceable calibration included<\/li>\n<li>Optional accredited calibration<\/li>\n<li>Different connector configurations<\/li>\n<li>Compatible with precision thermometer readouts<\/li>\n<li>Professional calibration support from europascal<\/li>\n<\/ul>\n<h2>Precision Temperature Measurement from 0 \u00b0C to 100 \u00b0C<\/h2>\n<p>The <strong>Fluke Calibration 5610<\/strong> is designed for accurate temperature measurements within a defined temperature range.<\/p>\n<p><strong>Temperature range: 0 \u00b0C to +100 \u00b0C<\/strong><\/p>\n<p>This range covers many important laboratory and industrial temperature measurement applications.<\/p>\n<p>The thermistor is particularly suitable for measurements near ambient temperature, where high temperature sensitivity and excellent measurement resolution are required.<\/p>\n<p>Typical applications include temperature calibration baths, laboratory temperature monitoring, reference temperature measurements and the verification of industrial temperature sensors.<\/p>\n<p>The narrow temperature range allows the thermistor to provide excellent measurement performance compared with many general-purpose temperature probes.<\/p>\n<h2>Secondary Reference Thermistor<\/h2>\n<p>The Fluke Calibration 5610 belongs to the Fluke Calibration series of secondary reference thermistor probes.<\/p>\n<p>These probes are designed for applications requiring high measurement accuracy and excellent stability.<\/p>\n<p>A secondary reference thermistor can be used as a reference temperature sensor during comparison calibration.<\/p>\n<p>The calibrated thermistor is placed in a stable temperature source together with the device under test.<\/p>\n<p>The reference temperature is measured using a compatible precision thermometer readout.<\/p>\n<p>The indication error of the device under test can then be calculated.<\/p>\n<p>This method is widely used in professional temperature calibration laboratories.<\/p>\n<h2>NTC Thermistor Technology<\/h2>\n<p>The Fluke Calibration 5610 uses an NTC thermistor.<\/p>\n<p>NTC stands for:<\/p>\n<p><strong>Negative Temperature Coefficient<\/strong><\/p>\n<p>This means that the electrical resistance decreases as temperature increases.<\/p>\n<p>Unlike a platinum resistance thermometer, which has a positive temperature coefficient, an NTC thermistor exhibits a strongly nonlinear resistance-temperature relationship.<\/p>\n<p>This characteristic provides excellent sensitivity to small temperature changes.<\/p>\n<p>The Fluke Calibration 5610 has a nominal resistance of:<\/p>\n<p><strong>10,000 \u03a9 at 25 \u00b0C<\/strong><\/p>\n<p>The relatively high resistance reduces the relative influence of connecting lead resistance compared with low-resistance temperature sensors.<\/p>\n<p>This makes thermistors particularly suitable for precision temperature measurements over limited temperature ranges.<\/p>\n<h2>High Calibrated Accuracy<\/h2>\n<p>The Fluke Calibration 5610 provides excellent calibrated accuracy.<\/p>\n<p>The manufacturer specifies:<\/p>\n<p><strong>\u00b10.01 \u00b0C<\/strong><\/p>\n<p>This specification applies to the supplied resistance-temperature calibration table and interpolation equation.<\/p>\n<p>The actual uncertainty of a complete temperature measurement system also depends on the connected thermometer readout and the measurement conditions.<\/p>\n<p>For professional calibration, the uncertainty contribution of the thermistor calibration must be combined with the relevant contributions of the readout and measurement setup.<\/p>\n<h2>Excellent Repeatability<\/h2>\n<p>Repeatability describes the ability of a temperature sensor to provide consistent measurement results under repeated measurement conditions.<\/p>\n<p>The Fluke Calibration 5610 provides excellent repeatability.<\/p>\n<p>The manufacturer specifies:<\/p>\n<p><strong>Better than \u00b10.005 \u00b0C<\/strong><\/p>\n<p>This characteristic is particularly important for reference temperature measurements.<\/p>\n<p>Good repeatability allows small temperature differences to be measured reliably.<\/p>\n<p>It also supports consistent results during repeated calibration procedures.<\/p>\n<h2>Low Annual Drift<\/h2>\n<p>Long-term stability is an important characteristic of reference thermistors.<\/p>\n<p>The Fluke Calibration 5610 is designed to maintain stable resistance-temperature characteristics over time.<\/p>\n<p>The manufacturer specifies annual drift of:<\/p>\n<p><strong>Better than \u00b10.01 \u00b0C per year<\/strong><\/p>\n<p>This value applies under the manufacturer&#8217;s defined conditions.<\/p>\n<p>Regular calibration is recommended to verify the long-term stability of the thermistor.<\/p>\n<h2>Stainless Steel Probe Sheath<\/h2>\n<p>The <strong>Fluke Calibration 5610<\/strong> features a robust stainless steel sheath.<\/p>\n<p>The stainless steel construction protects the sensitive thermistor element and provides mechanical durability.<\/p>\n<p>The probe can be used in suitable liquids, air and other compatible measurement environments.<\/p>\n<p>The manufacturer identifies the 5610 as a stainless steel immersion thermistor.<\/p>\n<p>For applications involving aggressive chemicals, the compatibility of the probe material must be considered.<\/p>\n<h2>Slim 3.2 mm Probe Diameter<\/h2>\n<p>The Fluke Calibration 5610 features a compact probe diameter of:<\/p>\n<p><strong>3.2 mm (1\/8 inch)<\/strong><\/p>\n<p>The small diameter provides several advantages.<\/p>\n<p>It allows the thermistor to be inserted into narrow calibration openings.<\/p>\n<p>It also helps reduce the influence of heat conduction along the probe stem.<\/p>\n<p>The compact design provides good thermal response and allows accurate measurements in relatively small measurement volumes.<\/p>\n<h2>Minimum Immersion Depth<\/h2>\n<p>The manufacturer specifies a minimum immersion depth of approximately:<\/p>\n<p><strong>76 mm (3 inches)<\/strong><\/p>\n<p>Adequate immersion is important for accurate temperature measurements.<\/p>\n<p>If the probe is not sufficiently immersed, heat conduction along the stem can influence the temperature of the sensing element.<\/p>\n<p>The resulting measurement error is commonly known as stem conduction error.<\/p>\n<p>The small diameter and compact sensing element of the Fluke Calibration 5610 help reduce this effect.<\/p>\n<p>For demanding calibration applications, immersion effects should nevertheless be evaluated under the actual measurement conditions.<\/p>\n<h2>Available Probe Lengths<\/h2>\n<p>The Fluke Calibration 5610 is available in two standard lengths.<\/p>\n<h3>Fluke Calibration 5610-6-X<\/h3>\n<p><strong>Probe length: 152.4 mm (6 inches)<\/strong><\/p>\n<p><strong>Probe diameter: 3.2 mm<\/strong><\/p>\n<p><strong>Temperature range: 0 \u00b0C to +100 \u00b0C<\/strong><\/p>\n<p>This version is suitable for compact calibration baths and laboratory temperature measurements.<\/p>\n<h3>Fluke Calibration 5610-9-X<\/h3>\n<p><strong>Probe length: 228.6 mm (9 inches)<\/strong><\/p>\n<p><strong>Probe diameter: 3.2 mm<\/strong><\/p>\n<p><strong>Temperature range: 0 \u00b0C to +100 \u00b0C<\/strong><\/p>\n<p>This version provides additional length for applications requiring deeper immersion.<\/p>\n<p>Both versions use the same thermistor technology.<\/p>\n<h2>Individual Resistance-Temperature Calibration<\/h2>\n<p>Each Fluke Calibration 5610 is supplied with individual calibration data.<\/p>\n<p>The manufacturer provides a resistance-versus-temperature table.<\/p>\n<p>Calibration values are listed in increments of:<\/p>\n<p><strong>0.1 \u00b0C<\/strong><\/p>\n<p>An interpolation equation is also supplied.<\/p>\n<p>The equation allows resistance measurements to be converted into temperature values between the tabulated calibration points.<\/p>\n<p>The manufacturer specifies that the interpolation can be performed to a temperature resolution of 0.0001 \u00b0C.<\/p>\n<p>This resolution must not be confused with the absolute accuracy of the thermistor.<\/p>\n<h2>Thermistor Temperature Conversion<\/h2>\n<p>The relationship between resistance and temperature in an NTC thermistor is nonlinear.<\/p>\n<p>A commonly used mathematical representation is the Steinhart-Hart equation:<\/p>\n<p><strong>1\/T = A + B \u00d7 ln(R) + C \u00d7 [ln(R)]\u00b3<\/strong><\/p>\n<p>Where:<\/p>\n<ul>\n<li>T = Absolute temperature in kelvin<\/li>\n<li>R = Thermistor resistance<\/li>\n<li>A, B and C = Calibration coefficients<\/li>\n<\/ul>\n<p>The exact conversion method depends on the calibration data supplied with the thermistor and the capabilities of the connected thermometer readout.<\/p>\n<p>Using the individual calibration data allows the actual resistance-temperature relationship of the sensor to be considered.<\/p>\n<h2>NIST-Traceable Calibration Included<\/h2>\n<p>The Fluke Calibration 5610 is supplied with a calibration traceable to NIST standards.<\/p>\n<p>The calibration documentation includes the individual resistance-temperature relationship of the thermistor.<\/p>\n<p>This provides a basis for accurate temperature calculation.<\/p>\n<p>For applications requiring an accredited calibration certificate, an appropriate calibration option can be ordered.<\/p>\n<p>The standard traceable calibration and an optional accredited calibration should not be treated as identical services.<\/p>\n<h2>Optional Accredited Calibration<\/h2>\n<p>Fluke Calibration offers optional accredited calibration for the 5610.<\/p>\n<p>An accredited calibration provides documented results within the applicable accreditation scope.<\/p>\n<p>The manufacturer lists optional accredited calibration uncertainties down to:<\/p>\n<p><strong>\u00b10.006 \u00b0C<\/strong><\/p>\n<p>The actual uncertainty depends on the selected calibration service and calibration conditions.<\/p>\n<p>For high-accuracy applications, the calibration certificate should be reviewed to determine the applicable uncertainty at each calibration point.<\/p>\n<h2>Compatible Thermometer Readouts<\/h2>\n<p>The Fluke Calibration 5610 is a passive temperature sensor.<\/p>\n<p>It does not include an integrated temperature display.<\/p>\n<p>A suitable precision thermometer readout is required.<\/p>\n<p>Compatible instruments include:<\/p>\n<ul>\n<li>Fluke Calibration 1504<\/li>\n<li>Fluke Calibration 1523<\/li>\n<li>Fluke Calibration 1524<\/li>\n<li>Fluke Calibration 1529<\/li>\n<li>Fluke Calibration 1560<\/li>\n<li>Compatible precision thermistor readouts<\/li>\n<\/ul>\n<p>The selected connector must match the input configuration of the thermometer readout.<\/p>\n<h2>Fluke Calibration 5610 with Fluke Calibration 1504<\/h2>\n<p>The Fluke Calibration 1504 is a precision thermistor thermometer readout.<\/p>\n<p>When combined with the Fluke Calibration 5610, it provides a high-accuracy temperature measurement system.<\/p>\n<p>The Fluke Calibration 1504 measures the resistance of the thermistor and calculates temperature using the appropriate calibration coefficients.<\/p>\n<p>This combination is particularly suitable for laboratory reference temperature measurements.<\/p>\n<h2>Fluke Calibration 5610 with Fluke Calibration 1523<\/h2>\n<p>The Fluke Calibration 1523 is a portable reference thermometer readout.<\/p>\n<p>It supports precision thermistors and other temperature sensor technologies.<\/p>\n<p>When combined with the Fluke Calibration 5610, it provides a compact and portable temperature measurement system.<\/p>\n<p>This combination is suitable for laboratory and field calibration applications.<\/p>\n<h2>Fluke Calibration 5610 with Fluke Calibration 1524<\/h2>\n<p>The Fluke Calibration 1524 is a dual-channel reference thermometer readout.<\/p>\n<p>It supports simultaneous measurements using two compatible temperature sensors.<\/p>\n<p>The instrument also provides integrated data logging.<\/p>\n<p>When combined with the Fluke Calibration 5610, it can be used for temperature comparison measurements and temperature stability monitoring.<\/p>\n<h2>Available Connector Configurations<\/h2>\n<p>The Fluke Calibration 5610 is available with different connector options.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Connector Code<\/th>\n<th>Connection Type<\/th>\n<\/tr>\n<tr>\n<td>A<\/td>\n<td>INFO-CON for Fluke 914X<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>Bare wire<\/td>\n<\/tr>\n<tr>\n<td>D<\/td>\n<td>5-pin DIN<\/td>\n<\/tr>\n<tr>\n<td>G<\/td>\n<td>Gold pins<\/td>\n<\/tr>\n<tr>\n<td>J<\/td>\n<td>Banana plugs<\/td>\n<\/tr>\n<tr>\n<td>L<\/td>\n<td>Mini spade lugs<\/td>\n<\/tr>\n<tr>\n<td>M<\/td>\n<td>Mini banana plugs<\/td>\n<\/tr>\n<tr>\n<td>P<\/td>\n<td>INFO-CON for Fluke 1523\/1524<\/td>\n<\/tr>\n<tr>\n<td>S<\/td>\n<td>Spade lugs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The appropriate connector should be selected according to the thermometer readout.<\/p>\n<h2>Temperature Comparison Calibration<\/h2>\n<p>The Fluke Calibration 5610 is particularly suitable for temperature comparison calibration.<\/p>\n<p>A calibrated reference thermistor is placed in a stable temperature source together with the device under test.<\/p>\n<p>After thermal equilibrium has been reached, both temperature values are recorded.<\/p>\n<p>The indication error is calculated as:<\/p>\n<p><strong>\u0394T = T_DUT \u2212 T_REF<\/strong><\/p>\n<p>Where:<\/p>\n<ul>\n<li>\u0394T = Temperature indication error<\/li>\n<li>T_DUT = Temperature indicated by the device under test<\/li>\n<li>T_REF = Reference temperature<\/li>\n<\/ul>\n<p>This method is commonly used in professional temperature calibration laboratories.<\/p>\n<h2>Calibration Baths<\/h2>\n<p>The Fluke Calibration 5610 is suitable for use in compatible liquid calibration baths.<\/p>\n<p>Liquid baths provide stable and uniform temperature conditions.<\/p>\n<p>The reference thermistor and sensors under test can be immersed in the same temperature medium.<\/p>\n<p>This allows accurate temperature comparison measurements.<\/p>\n<p>The compact diameter of the Fluke Calibration 5610 provides flexibility when positioning the probe.<\/p>\n<h2>Temperature Stability Measurements<\/h2>\n<p>The Fluke Calibration 5610 can also be used for temperature stability measurements.<\/p>\n<p>When connected to a suitable thermometer readout or data acquisition system, the thermistor can monitor small temperature changes over time.<\/p>\n<p>The high temperature sensitivity of the NTC element makes it particularly suitable for detecting small temperature fluctuations.<\/p>\n<p>Typical applications include:<\/p>\n<ul>\n<li>Calibration bath stability<\/li>\n<li>Laboratory temperature monitoring<\/li>\n<li>Temperature-controlled equipment<\/li>\n<li>Environmental chamber testing<\/li>\n<li>Reference temperature measurements<\/li>\n<\/ul>\n<h2>Reference Measurement for Infrared Calibration<\/h2>\n<p>The Fluke Calibration 5610 can also be used as a contact reference thermometer in suitable infrared calibration setups.<\/p>\n<p>For example, Fluke describes the use of a 5610 thermistor with a Fluke 1504 readout and a Fluke 4180 infrared calibrator.<\/p>\n<p>In this application, the thermistor measures the temperature of the calibration source.<\/p>\n<p>However, contact temperature and radiometric temperature are not necessarily identical.<\/p>\n<p>When a contact thermometer is used to characterize an infrared radiation source, appropriate radiometric corrections and measurement uncertainty contributions must be considered.<\/p>\n<h2>Technical Highlights<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Feature<\/th>\n<th>Fluke Calibration 5610<\/th>\n<\/tr>\n<tr>\n<td>Product type<\/td>\n<td>Secondary Reference Thermistor<\/td>\n<\/tr>\n<tr>\n<td>Manufacturer<\/td>\n<td>Fluke Calibration<\/td>\n<\/tr>\n<tr>\n<td>Sensor technology<\/td>\n<td>NTC Thermistor<\/td>\n<\/tr>\n<tr>\n<td>Temperature range<\/td>\n<td>0 \u00b0C to +100 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Nominal resistance<\/td>\n<td>10,000 \u03a9 at 25 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Calibrated accuracy<\/td>\n<td>\u00b10.01 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Optional accredited calibration uncertainty<\/td>\n<td>Down to \u00b10.006 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Repeatability<\/td>\n<td>Better than \u00b10.005 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Annual drift<\/td>\n<td>Better than \u00b10.01 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Sheath material<\/td>\n<td>Stainless steel<\/td>\n<\/tr>\n<tr>\n<td>Sheath diameter<\/td>\n<td>3.2 mm<\/td>\n<\/tr>\n<tr>\n<td>Probe length, 5610-6<\/td>\n<td>152.4 mm<\/td>\n<\/tr>\n<tr>\n<td>Probe length, 5610-9<\/td>\n<td>228.6 mm<\/td>\n<\/tr>\n<tr>\n<td>Minimum immersion depth<\/td>\n<td>76 mm<\/td>\n<\/tr>\n<tr>\n<td>Lead-wire length<\/td>\n<td>Approximately 1.83 m<\/td>\n<\/tr>\n<tr>\n<td>Calibration table<\/td>\n<td>Resistance vs. temperature<\/td>\n<\/tr>\n<tr>\n<td>Calibration table increments<\/td>\n<td>0.1 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Interpolation equation<\/td>\n<td>Included<\/td>\n<\/tr>\n<tr>\n<td>Traceable calibration<\/td>\n<td>Included<\/td>\n<\/tr>\n<tr>\n<td>Accredited calibration<\/td>\n<td>Optional<\/td>\n<\/tr>\n<tr>\n<td>Integrated display<\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td>Compatible readouts<\/td>\n<td>Fluke 1504, 1523, 1524, 1529 and others<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Fluke Calibration 5610 vs. Fluke Calibration 5608<\/h2>\n<p>The Fluke Calibration 5610 and Fluke Calibration 5608 are both precision reference temperature probes.<\/p>\n<p>However, they use different sensor technologies.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Feature<\/th>\n<th>Fluke Calibration 5610<\/th>\n<th>Fluke Calibration 5608<\/th>\n<\/tr>\n<tr>\n<td>Sensor type<\/td>\n<td>NTC Thermistor<\/td>\n<td>Platinum Resistance Thermometer<\/td>\n<\/tr>\n<tr>\n<td>Temperature range<\/td>\n<td>0 \u00b0C to 100 \u00b0C<\/td>\n<td>\u2212200 \u00b0C to 500 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Nominal resistance<\/td>\n<td>10 k\u03a9 at 25 \u00b0C<\/td>\n<td>Depends on PRT version<\/td>\n<\/tr>\n<tr>\n<td>Calibrated accuracy<\/td>\n<td>\u00b10.01 \u00b0C<\/td>\n<td>Depends on calibration<\/td>\n<\/tr>\n<tr>\n<td>Probe diameter<\/td>\n<td>3.2 mm<\/td>\n<td>3.18 mm<\/td>\n<\/tr>\n<tr>\n<td>Minimum immersion<\/td>\n<td>76 mm<\/td>\n<td>80 mm<\/td>\n<\/tr>\n<tr>\n<td>Main advantage<\/td>\n<td>High accuracy over a narrow range<\/td>\n<td>Wide temperature range<\/td>\n<\/tr>\n<tr>\n<td>Typical application<\/td>\n<td>Precision laboratory measurements<\/td>\n<td>General reference temperature calibration<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The Fluke Calibration 5610 is particularly suitable for applications requiring high accuracy between 0 \u00b0C and 100 \u00b0C.<\/p>\n<p>The Fluke Calibration 5608 is designed for applications requiring a much wider temperature range.<\/p>\n<h2>Typical Applications<\/h2>\n<p>The <strong>Fluke Calibration 5610<\/strong> is suitable for:<\/p>\n<ul>\n<li>Precision temperature measurement<\/li>\n<li>Secondary reference temperature measurement<\/li>\n<li>Thermistor calibration<\/li>\n<li>Temperature comparison calibration<\/li>\n<li>Liquid calibration baths<\/li>\n<li>Laboratory temperature monitoring<\/li>\n<li>Temperature stability measurements<\/li>\n<li>Temperature uniformity measurements<\/li>\n<li>Industrial temperature sensor verification<\/li>\n<li>Infrared calibration source characterization<\/li>\n<li>Quality assurance<\/li>\n<li>Research laboratories<\/li>\n<li>Pharmaceutical laboratories<\/li>\n<li>Temperature metrology<\/li>\n<li>Laboratory temperature calibration<\/li>\n<\/ul>\n<h2>Calibration by europascal<\/h2>\n<p>Regular calibration is essential for maintaining reliable temperature measurement results.<\/p>\n<p>europascal provides professional calibration services for temperature measuring instruments and reference temperature measurement systems.<\/p>\n<p>The Fluke Calibration 5610 can be calibrated to verify its individual resistance-temperature characteristic.<\/p>\n<p>When combined with a compatible precision thermometer readout, the thermistor forms part of a traceable reference temperature measurement system.<\/p>\n<p>The measurement uncertainty depends on the thermistor calibration, readout performance and measurement conditions.<\/p>\n<p>For professional calibration and metrological traceability, visit the <a href=\"https:\/\/europascal.de\/en\/calibration-services\/\">europascal Calibration Service<\/a>.<\/p>\n<p>europascal also supports customers with the selection of suitable reference thermistors, thermometer readouts and temperature calibration equipment.<\/p>\n<h2>Why Choose the Fluke Calibration 5610?<\/h2>\n<p>The <strong>Fluke Calibration 5610<\/strong> combines excellent temperature sensitivity, high calibrated accuracy and outstanding stability in a compact reference thermistor.<\/p>\n<p>Its temperature range from 0 \u00b0C to 100 \u00b0C covers many important laboratory and industrial temperature measurement applications.<\/p>\n<p>The nominal resistance of 10 k\u03a9 at 25 \u00b0C provides excellent sensitivity to small temperature changes.<\/p>\n<p>The manufacturer specifies calibrated accuracy of \u00b10.01 \u00b0C, repeatability better than \u00b10.005 \u00b0C and annual drift better than \u00b10.01 \u00b0C.<\/p>\n<p>The slim stainless steel sheath allows measurements in compact calibration setups.<\/p>\n<p>Individual calibration data and an interpolation equation are included.<\/p>\n<p>Optional accredited calibration is available for demanding metrological applications.<\/p>\n<p>Compatibility with Fluke Calibration precision thermometer readouts provides flexibility for different measurement systems.<\/p>\n<p>For professional users requiring a high-accuracy reference thermistor, the Fluke Calibration 5610 provides an excellent combination of measurement performance, stability and versatility.<\/p>\n<p>europascal supports customers with reference temperature probes, temperature calibration equipment and professional calibration services.<\/p>\n<p><a href=\"https:\/\/europascal.de\/marke\/fluke-calibration\/\">Further products from Fluke Calibration can be found here.<\/a><\/p>\n<p><a href=\"https:\/\/www.fluke.com\/en-us\/product\/calibration-tools\/temperature-calibrators\/fluke-hart-secondary-thermistor-probes\" target=\"_blank\" rel=\"noopener\">Manufacturer information about the Fluke Calibration 5610 can be found on the official Fluke website.<\/a><\/p>\n<p><a class=\"download-datasheet\" href=\"#\" data-pdf=\"https:\/\/europascal.de\/wp-content\/uploads\/2026\/07\/Fluke-Hart-5610-5611A-5611TSecondary-Referenz-Thermistor-Probes.pdf\"><span style=\"color: #0000ff;\"><strong><em>Download Datasheet<\/em><\/strong><\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The <strong>Fluke Calibration 5610<\/strong> is a high-precision secondary reference NTC thermistor for accurate temperature measurements from <strong>0 \u00b0C to +100 \u00b0C<\/strong>. Featuring a nominal resistance of <strong>10 k\u03a9 at 25 \u00b0C<\/strong>, calibrated accuracy of <strong>\u00b10.01 \u00b0C<\/strong>, repeatability better than <strong>\u00b10.005 \u00b0C<\/strong> and excellent long-term stability, the probe is ideal for laboratory reference measurements and temperature comparison calibration. Its slim <strong>3.2 mm stainless steel sheath<\/strong> is available in lengths of 152.4 mm and 228.6 mm. Individual calibration data, a resistance-temperature table and an interpolation equation are included. Optional accredited calibration is 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