Calibration of Thermometers at WIKA - Requirements and Traceability

What is the difference between calibration, verification, and adjustment? Additionally, we explain in the video when adjustments should be made.

▬ Content of this video ▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 – Introduction 00:04 - Calibration - Adjustment - Verification 00:37 - What is instrument calibration? 01:22 - What is adjustment? 01:34 - What is verification? 01:49 - Calibration services at WIKA's calibration lab All instruments experience aging degradation due to mechanical, chemical, installation, and operational environmental factors, leading to deviations in measurement values and accuracy. While aging degradation cannot be prevented, early detection of it is possible through calibration. What is the difference between calibration and verification? And when should adjustments be made? At WIKA's calibration lab, we can perform calibration, adjustment, and verification of measuring instruments. Feel free to contact us. https://www.wika.co.jp/contact_ja_jp.WIKA?cnType=1

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WIKA can perform calibrations in accordance with the international temperature scale ITS-90 and issue ILAC-MRA calibration certificates.

WIKA offers a variety of temperature calibration services. It is important to adhere to traceability in accordance with international standards when conducting calibrations. For high-precision calibration standards used in factories and laboratories, it is necessary to use even more precise references. One method is fixed-point calibration based on the International Temperature Scale ITS-90. This calibration utilizes specific points such as the melting points and triple points of substances. These specific points are extremely reproducible and stable, allowing for high accuracy to be achieved. At WIKA's German facility, it is possible to set the triple point of silver, the triple point of water, the melting point of gallium, the melting point of tin, the melting point of zinc, and the melting point of aluminum, enabling calibration between -38.8344 °C and 660.323 °C.

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By using a dry well temperature calibration bath, a high-precision thermometer, and a high-precision Pt100 temperature sensor, high-precision temperature calibration becomes possible.

WIKA provides solutions to minimize uncertainty in dry well temperature calibrators. The uncertainty, which affects accuracy, can increase due to various factors such as the surrounding environment and measuring instruments. The maximum value obtained by summing all these uncertainties is referred to as "combined uncertainty." WIKA offers high-precision temperature calibrators from the CTD9350 and CTD9100 series, as well as high-precision thermometers like the CTR3000 and temperature resistance probes like the CTP5000, to reduce combined uncertainty during calibration work. By using these solutions, it also becomes possible to calibrate high-precision resistance thermometers.

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What is traceability? What is uncertainty? Why is calibration performed? This explains basic knowledge such as what traceability is in an easy-to-understand manner.

What is traceability in measurement? What is uncertainty? What is calibration? Why is calibration performed? This is a document on basic knowledge regarding these topics.

• Other measuring instruments

What is traceability? What is uncertainty? Why is calibration performed? We provide a clear explanation of basic knowledge such as what traceability is.

What is calibration? Why is calibration performed? What is traceability? This is a document on basic knowledge regarding these topics.

• Other measuring instruments

What is traceability? What is uncertainty? Why is calibration performed? This explains basic knowledge such as what traceability is in an easy-to-understand manner.

What is traceability in measurement? What is uncertainty? What is calibration? Why is calibration performed? This is a document on basic knowledge regarding these topics.

• Other measuring instruments

It explains the accuracy of pressure sensors and the important factors that affect accuracy, such as zero point error, span error, and non-linearity.

What does the accuracy of a pressure sensor mean, and how does the inaccuracy that leads to errors in the desired measurement results arise? This video explains the most important elements related to the accuracy of pressure sensors: zero point error, span error, and non-linearity. The interaction of errors such as zero point error, span error, non-linearity, hysteresis, and reproducibility is referred to as "accuracy." The term "accuracy" is frequently used in documents such as product specifications, but it is not clearly defined in standards. Unfortunately, there is no common understanding of what "accuracy" means. In reality, there are various related data points rather than a single "accuracy." All of these collectively represent "accuracy." The elements related to the accuracy of pressure sensors are standardized. For example, measurement errors include systematic and random components, so the numerical value of accuracy is determined statistically. It is necessary to distinguish between the measurement errors displayed as "maximum" and "standard." In the case of maximum error, the majority of the delivered products should have errors smaller than the maximum error. If there is a description of "typ.," the error may be several times the specified "standard" error.

• Measurement and Analysis Equipment

It clearly explains the differences between general calibration and ISO 17025 accredited calibration, as well as considerations regarding traceability and the issuance of calibration certificates.

Your measuring instrument can be checked for accuracy and calibrated at the WIKA calibration lab. Calibration can be performed either as a general calibration or as an ISO 17025 accredited calibration. The results of both types of calibration will be documented in a calibration certificate, and a calibration sticker will be affixed to the calibrated instrument. Only ISO 17025 accredited calibrations guarantee that testing is conducted using testing equipment certified by an international accreditation body. The traceability diagram is structured to show the hierarchy from the standard instruments used in the inspection factory to the test standards and national standards. Measurement uncertainty is documented by clarifying not only the factors of measurement error such as hysteresis and variation but also measurement deviation and the uncertainty of the reference instruments. Compared to general calibration, ISO 17025 accredited calibration is more accurate, broadly applicable, and internationally recognized. For general calibration, the instrument difference is determined by considering only hysteresis. The calibration performed at the time of factory shipment is issued as an inspection certificate in accordance with DIN / EN 10204.

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High-precision dry well temperature calibration bath with accuracy: 0.1 K, resolution: 0.001 °C, temperature range: -35 ... +165 °C.

<Basic Information> - Temperature Range: -35 ... +165 °C - Accuracy: 0.1 K - Stability: < 0.02 K - Resolution: 0.001 - Display: 7-inch touch panel display - Program: Capable of creating automatic control programs for calibration steps <Supported Measurement Sensors> - Temperature resistance thermometers - Thermocouples - 0/4-20 mA, 0-5/10 V transmitter output <Insertion Part> - Insertion Depth: 150 mm - Insertion Part Dimensions: Ø 28 x 150 mm - Insertion Part Material: Brass <Temperature Control> - Heating Time: 14 minutes (from 20 °C to 165 °C) - Cooling Time: 13 minutes (from 20 °C to -20 °C) - Stabilization Time: Depends on temperature and insertion length <Power Supply> - Power Supply: AC 100 ... 240 V, 50/60 Hz - Power Consumption: 375 W <Other> - Interface: USB, Ethernet - Product Size (W x H x D): 210 x 300 x 380 mm - Weight: 13.5 kg - Complies with CE mark and UKCA mark For more details, please refer to the product data sheet.

• Other measuring instruments

Accuracy: ±0.02K, Resolution: 0.1℃, Temperature range: Heating and cooling calibration bus capable of temperature settings from -45 to +300 °C.

This is the optimal temperature calibration bus for calibrating temperature probes without selecting a location. <Display> - Display: 4-digit LED display - Temperature range: -45 ... +300 °C - Accuracy: 0.02K - Stability: < 0.05 K - Resolution: 0.1℃ or 0.01℃ <Insertion Dimensions> - Minimum filling volume: 11.5 or 22 liters - Constant temperature chamber opening: Width x Depth 270 x 145 mm or 280 x 280 mm - Constant temperature chamber depth: 200 mm - Main unit dimensions (W x D x H): 335 x 382 x 433 mm or 420 x 565 x 719 mm - Main unit weight: 22 kg or 72 kg <Power Supply> - Power supply: AC 230 V, 50/60 Hz / AC 400 V, 50 Hz, 3~ / AC 208 V, 60 Hz, 2~ AC 230 V, 50/60 Hz / AC 208 V 60 Hz, 2~ <Other> - Interface: RS-285, USB, Ethernet - CE mark compliant

• Other measuring instruments

Accuracy: ±0.2K, Resolution: 0.1, Multi-functional temperature calibration bus capable of temperature setting in the range of -35 to +165°C.

Ideal for on-site calibration due to its very compact design and lightweight, it can be easily carried and used anywhere. <Display> - Display: 4-digit LED display - Temperature range: -35 ... +165 °C - Accuracy: 0.2K - Stability: ±0.05 K - Resolution: 0.01 up to 100°C, 0.1 above that <Insertion Dimensions> - Insertion depth: 150 mm - Insertion dimensions: Ø 60 x 170 mm - Insertion material: Aluminum <Power Supply> - Power supply: AC 100 ... 240 V, 50/60 Hz - Power consumption: 400 VA - Fuse: 6.3 A slow-blow fuse - Power cord: 230 V, European standard <Other> - Dimensions: 215 x 305 x 425 mm - Weight: 12 kg - Interface: RS-485 - CE mark compliant For more details, please refer to the product data sheet.

• Other measuring instruments

Accuracy: ±0.02K, Resolution: 0.1℃, Temperature range: Heating and cooling calibration bus capable of temperature setting from -45 to +300 °C.

This is the optimal temperature calibration bus for calibrating temperature probes without being limited to a specific location. <Display> - Display: 4-digit LED display - Temperature range: -45 ... +300 °C - Accuracy: 0.02K - Stability: < 0.05 K - Resolution: 0.1℃ or 0.01℃ <Insertion Dimensions> - Minimum filling volume: 11.5 or 22 liters - Constant temperature chamber opening: Width x Depth 270 x 145 mm or 280 x 280 mm - Constant temperature chamber depth: 200 mm - Main unit dimensions (W x D x H): 335 x 382 x 433 mm or 420 x 565 x 719 mm - Main unit weight: 22 kg or 72 kg <Power Supply> - Power supply: AC 230 V, 50/60 Hz / AC 400 V, 50 Hz, 3~ / AC 208 V, 60 Hz, 2~ AC 230 V, 50/60 Hz / AC 208 V 60 Hz, 2~ <Other> - Interface: RS-285, USB, Ethernet - CE mark compliant

• Other measuring instruments

Accuracy: 0.1 K (0.05 K at 0°C), display resolution: 0.1°C, temperature range: -10 … 0 … +100 °C temperature calibration bus.

<Display> - Display: 4-digit LED display - Temperature range: -10 … 0 … +100 °C - Accuracy: 0.05 K at 0 °C, otherwise 0.1 K - Stability: < 0.05 K - Resolution: 0.1 °C <Temperature Control> - Heating time: 15 minutes (from -10 °C to 100 °C) - Cooling time: 5 minutes (from 23 °C to 0 °C) 10 minutes (from 100 °C to 0 °C) - Stabilization time: Depends on temperature and insertion length <Insertion Part> - Insertion depth: 150 mm - Calibration holes: 7 holes of Ø6.5 mm <Power Supply> - Power supply: AC 100 ... 240 V, 50/60 Hz - Power consumption: 225 VA - Fuse: 3.15 A slow-blow fuse (AC 250 V) - Power cord: AC 230 V; European standard <Other> - Interface: RS-232 - Product size (W x H x D): 160 x 230 x 320+50 mm - Weight: 7 kg - Complies with CE mark and GOST standards For more details, please refer to the product data sheet.

• Other measuring instruments

Accuracy: 0.15 ... 0.25 K, Resolution: 0.001℃, Temperature Range: -55 ... +200 °C high-precision temperature calibration bus.

<Display> - Display: 4-digit LED display - Temperature range: -55 ... +650 °C - Accuracy: 0.15 ... 0.25 K - Stability: < 0.05 K - Resolution: 0.01 up to 100 °C, thereafter 0.1 <Temperature Control> - Heating time: 20 minutes (from 20 °C to 600 °C) - Cooling time: 10 minutes (from 20 °C to -20 °C) - Stabilization time: depends on temperature and insertion length <Insertion Part> - Insertion depth: 150 mm - Insertion part dimensions: Ø 28 x 150 mm - Insertion part material: Aluminum <Power Supply> - Power supply: AC 100 ... 240 V, 50/60 Hz - Power consumption: 375 VA - Fuse: 6.3 A slow-blow fuse (AC 250 V) - Power cord: AC 230 V; European standard <Others> - Interface: RS-485 - Product size (W x H x D): 215 x 305 x 425 mm - Weight: 11 kg - Complies with CE mark, EAC, and GOST standards For more details, please refer to the product data sheet.

• Other measuring instruments

Accuracy: 0.15 ... 0.25 K, Resolution: 0.001℃, Temperature Range: -55 ... +200 °C high-precision temperature calibration bus.

<Display> - Display: 4-digit LED display - Temperature range: -55 ... +650 °C - Accuracy: 0.15 ... 0.25 K - Stability: < 0.05 K - Resolution: 0.01 up to 100 °C, thereafter 0.1 <Temperature Control> - Heating time: 20 minutes (from 20 °C to 600 °C) - Cooling time: 10 minutes (from 20 °C to -20 °C) - Stabilization time: Depends on temperature and insertion length <Insertion Part> - Insertion depth: 150 mm - Insertion part dimensions: Ø 28 x 150 mm - Insertion part material: Aluminum <Power Supply> - Power supply: AC 100 ... 240 V, 50/60 Hz - Power consumption: 375 VA - Fuse: 6.3 A slow-blow fuse (AC 250 V) - Power cord: AC 230 V; European standard <Other> - Interface: RS-485 - Product size (W x H x D): 215 x 305 x 425 mm - Weight: 11 kg - Complies with CE mark, EAC, GOST standards For more details, please refer to the product data sheet.

• Other measuring instruments

Accuracy: ±0.2K, Resolution: 0.1, Temperature range: Calibration bus capable of temperature setting from -40 to +255°C.

The CTB9000 is a higher model of the dry well temperature calibrators in the CTD9100 and CTD9300 series. In dry well temperature calibrators, the shallow insertion depth can cause thermal conduction errors, increasing measurement uncertainty; however, when the stem length is less than 70 mm, this product can resolve that issue. Additionally, improvements have been made for calibrating multiple probes simultaneously, allowing for the calibration of thermometers with different stem lengths together. You can choose from two temperature ranges: -35 ... +165 °C and 40 ... 225 °C, with an option to support up to 255 °C. The CTB9100 achieves a reduction in thermal conduction errors and measurement uncertainty by controlling the temperature of a liquid tank with a diameter of 60 mm and a depth of 150 mm. Calibration temperature can be easily and very quickly controlled using two keys on the controller. The actual temperature and the set temperature can be displayed simultaneously on a large four-digit high-contrast LCD, significantly reducing human errors due to reading inaccuracies.

• Other measuring instruments

Accuracy: 0.1 K (0.05 K at 0°C), display resolution: 0.1°C, temperature range: -10 … 0 … +100 °C temperature calibration bus.

The CTD9100 is particularly ideal for on-site calibration applications, and its user-friendly, compact, and lightweight design allows it to be easily transported and used anywhere. By enabling easy regular calibration of temperature probes, it can reduce production downtime due to failures. The freezing point calibrator not only operates at 0°C but also allows for simultaneous calibration at other test temperatures thanks to its active cooling feature. As a product concept, it combines a stable temperature source with high-precision Pt100 temperature measurement, making the calibration of industrial temperature probes more efficient and quicker. This calibration bath can be easily set to cold junction temperatures for extended periods, simplifying the calibration of thermocouples. It not only eliminates the complexities of conventional water fixed-point cells but also mitigates the risk of freezing or damage during transport. The design and control mechanism maintain a uniform temperature distribution within the block. This ensures that temperature variations do not occur across the seven test holes, allowing for a consistent temperature distribution environment and reducing the impact of measurement uncertainty.

• Other measuring instruments

Accuracy: 0.15 ... 0.25 K, Resolution: 0.001℃, Temperature Range: -55 ... +200 °C high-precision temperature calibration bus.

The CTD9100 is particularly ideal for on-site calibration and is a very user-friendly temperature calibrator. Its compact and lightweight design allows for easy transport and use anywhere. A major feature is the combination of a stable heat source and high-precision Pt100 temperature measurement, which enables even more efficient calibration using temperature probes. By regularly monitoring the temperature probes, it allows for quick detection of failures and helps reduce downtime. Calibration can be performed using a temperature-controlled metal block and interchangeable inserts. Calibration temperatures can be quickly set using just two buttons, and the actual temperature and set temperature are displayed simultaneously on a large, high-contrast four-digit LCD, preventing misreading. Thermometers with different sheath diameters can be inserted into the calibrator using the included inserts. Additionally, the unique block design significantly improves uniformity in the low-temperature range, resulting in very small measurement uncertainty. Furthermore, the calibration bus allows for a 150 mm insertion, greatly reducing heat dissipation errors.

• Other measuring instruments

Accuracy: ±0.2K, Resolution: 0.1, Temperature range: Calibration bus capable of temperature settings from -40 to +255°C.

<Display> - Display: 4-digit LED display - Temperature range: -35 ... +225 °C - Accuracy: 0.2K - Stability: < 0.05 K - Resolution: 0.01 up to 100°C, thereafter 0.1 <Temperature Control> - Heating time: 10 minutes (from 20 °C to 225 °C) - Cooling time: 30 minutes (from 225 °C to 20 °C) - Stabilization time: depends on temperature and insertion length <Insertion Part> - Insertion depth: 150 mm - Insertion part dimensions: Ø 60 x 165 mm - Constant temperature bath volume: 0.6 liters <Power Supply> - Power supply: AC 100 ... 240 V, 50/60 Hz - Power consumption: 375 VA or 1,100 VA - Fuse: 6.3 A or 10 A slow-blow fuse (AC 250 V) - Power cord: AC 230 V <Other> - Interface: RS-485 - Product size (W x H x D): 215 x 305 x 425 mm - Weight: 12.5 or 7.5 kg - Complies with CE mark, EAC, GOST standards For more details, please refer to the product data sheet.

• Other measuring instruments

Accuracy: ±0.02K, Resolution: 0.1℃, Temperature range: Heating and cooling calibration bus capable of temperature settings from -45 to +300 °C.

The CTB9400 and CTB9500 are the ideal temperature calibration baths for calibrating temperature probes regardless of location. When performing calibration, the test thermometer and reference thermometer are inserted into the calibration bath under the same temperature conditions. After reaching a stable temperature, the displayed values are read, or the output signals are measured for comparison calibration with the standard thermometer. To minimize measurement uncertainty in this comparison, a temperature control unit that ensures a uniform temperature distribution and constant temperature within the calibration range is necessary. The medium used in the liquid chamber is silicone oil, which has high thermal conductivity, low viscosity, is inert over a wide temperature range, has low vapor pressure, is resistant to chemical decomposition, and is difficult to ignite, in order to maintain a uniform temperature distribution. The temperature range is from -45 to +300°C, with two versions available: CTB9400: 28 to 300 °C CTB9500: -45 to +200 °C The temperature-controlled tank is designed to be 200mm, which is generally said to reduce heat dissipation errors and minimize measurement uncertainty. It is the optimal temperature calibration bath for calibrating temperature probes regardless of location.

• Other measuring instruments

Accuracy: ±0.2K, Resolution: 0.1, Multi-functional temperature calibration bus capable of temperature setting in the range of -35 to +165°C.

The CTx9100 series portable calibrator is particularly suitable for on-site calibration, and its very compact design and lightweight make it easy to carry and use anywhere. Using dry well calibrators or micro-calibration baths for calibrating surface thermometers or non-contact thermometers may lead to incorrect values as they are not optimal applications, but with the CTM9100-150, you can confidently use such temperature calibrators. By using the included accessories and simply operating the keys and toggle switch, it can be calibrated as contact (TC, Pt, surface) or non-contact (infrared), and you can easily switch between four types of temperature calibration functions. Calibration temperature can be easily adjusted using two keys on the controller, allowing for very rapid control. The actual temperature and the set temperature can be displayed simultaneously on a large four-digit high-contrast LCD screen, minimizing the chances of misreading. Its very compact design and lightweight make it ideal for on-site calibration, allowing it to be carried and used anywhere.

• Other measuring instruments

The non-contact beam touch sensor "HA-T401/HA-T520" has a compact detection range, making it an ideal automatic door sensor for installation on automatic doors facing narrow corridors or busy streets. Depending on the application and installation location, you can choose between "non-vision mounting type" and "non-vision built-in type." 【Features】 ● With the beam touch sensor, you can open and close the automatic door simply by bringing your hand close without touching it, ensuring hygiene. ● Depending on the installation environment, such as single sliding or bi-parting doors, the detection range can be set in four configurations: left, center, right, and a total of 12 spots. ● Two types of activation row settings are available to reduce unnecessary opening and closing of the automatic door due to cross traffic, contributing to energy-saving effects. ● The touch switch and infrared sensor are integrated, allowing for a switch between beam touch and infrared sensor with a single model. 【Recommended for such locations!】 ☑ Entrance facing a busy corridor ☑ Counter or sign near the door ☑ Buildings facing narrow corridors ☑ Buildings that prioritize aesthetics ☑ Hospitals and facilities that consider hygiene ☑ Large facilities with many doors ◎ For more details, please download the materials or contact us.

Japan is one of the top 10 countries in the world with frequent earthquakes. The 2020 White Paper on Land, Infrastructure, Transport and Tourism has also reported an increase in the probability of major earthquakes occurring. Regarding the Nankai Trough earthquake, the probability of an earthquake with a magnitude of 8 to 9 occurring within the next 30 years is estimated to be 70 to 80%. At Hotron, we recommend the introduction of seismic devices for earthquake countermeasures in buildings and equipment. The seismic device 'HK-2' is a product that automatically performs various controls that have been pre-set when it detects strong shaking equivalent to a seismic intensity of 5 lower or higher. For example, it can automatically execute actions such as: "Open automatic doors and gates to secure evacuation routes and access for emergency vehicles" "Transmit signals to the control room and stop facility equipment" "Unlock the keys to locked lockers" "Automatically play voice guidance" For more details, please download the materials or contact us.

Grabee is a next-generation monitoring solution equipped with new features specialized for forest fire and wildlife damage prevention, based on AI video analysis and location estimation technology developed at Guardian. In addition to the conventional location estimation function, it now includes flame identification and animal identification capabilities, enabling early detection and response to forest fires and wildlife damage. Furthermore, it supports mapping of fire areas and area calculations.

Syspro Inc. exhibited at the "General Affairs, Human Resources, and Accounting Week [Tokyo] within the 'HR EXPO'" held at Tokyo Big Sight from June 25 (Wednesday) to June 27 (Friday), 2025. Thanks to everyone, we had many visitors and were able to conclude the event successfully. We would like to take this opportunity to express our deep gratitude to all the attendees and the organizers.

Based on practical experience in support companies and business companies, SBS Marketing Co., Ltd. provides consulting services related to marketing, sales promotion, and customer acquisition mainly in the BtoB (business-to-business) sector. On August 5, 2025 (Tuesday), they published a page titled "Are Business Talks and Negotiations Determined by 'Preparation'? 'Hot Reading'". 'Hot Reading' involves researching the other party in advance and appearing to know things during the conversation to gain their trust. The page explains the benefits of using it, the specific process, relatable examples, two types of information for business use, and important points to keep in mind. (Page Overview: Excerpts) ■ What is 'Hot Reading'? ■ Benefits of 'Hot Reading' ■ Relatable examples of 'Hot Reading' ■ Differences from 'Cold Reading' ■ How to use it in business: Personal & Public Information Gathering ■ Precautions when utilizing 'Hot Reading' (DL content only) ▼ For more details, please visit this page. https://sbsmarketing.co.jp/blog/hot-reading-2025-08/