松尾電器産業 List of Products and Services

The M2HA thermostat for high temperature rise control (protector) is an automatic reset type housed in an alumina case, developed as a bimetal thermostat that can be used in high temperature environments up to 400℃.

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The variable thermostat (variable) "MQT11HV" uses a temperature power sensor (TPS) in the sensing part and has a built-in small resistor. It is ideal for remote operation using variable resistors, etc. It has a proven track record for use with heating mats and similar applications. For more details, please download the catalog.

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The medium and high-temperature thermostat "High-Temperature Type Thermostat M2HA" can control temperatures from 115 to 400℃. It has a long lifespan. It is slim and comes with lead wires. It has a dustproof structure. The DIFF. (differential) rank is E... with a setting temperature of 115℃ to 200℃, it is 15±5 (10 to 20)℃. For more details, please download the catalog.

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The medium temperature thermostat "M2H" can control temperatures from 115 to 200°C. It has a long lifespan. It is slim and comes with lead wires. It has a dustproof structure. There is also a version for microcurrents. The DIFF. (differential) rank is E... with a setting temperature of 115°C to 200°C, it is 15±5 (10 to 20)°C. For more details, please download the catalog.

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The liquid temperature power sensor "MQT83PD" is ideal for controlling liquid and oil temperatures. It is a thermostat for liquid temperature (oil temperature) control that incorporates a small differential thermostat from the MQT series. The temperature setting ranges from -10 to +110°C, and the ratings and characteristics conform to the standard MQT series. For more details, please download the catalog.

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The liquid temperature power sensor "MQT83P" is ideal for controlling liquid and oil temperatures. It is a thermostat for liquid temperature (oil temperature) control that incorporates a small differential thermostat from the MQT series. The temperature setting ranges from -10 to +110°C, and the ratings and characteristics conform to the standard MQT series. For more details, please download the catalog.

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The liquid temperature power sensor "MQT72P" is ideal for controlling liquid and oil temperatures. It is a thermostat for liquid (oil) temperature control that incorporates a small differential thermostat from the MQT series. The temperature setting ranges from -10 to +110°C, and the ratings and characteristics conform to the standard series of MQT. For more details, please download the catalog.

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The liquid temperature power sensor "MQT81P" is ideal for controlling liquid and oil temperatures. It is a thermostat for liquid temperature (oil temperature) control that incorporates a small differential thermostat from the MQT series. The temperature setting ranges from -10 to +110°C, and the ratings and characteristics conform to the standard series of MQT. For more details, please download the catalog.

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The "MQT5S/MQT5S(Z)" temperature power sensor for room temperature is a temperature-fixed bimetal thermostat. Our main product, the temperature power sensor (TPS), is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats, while still being a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products. For more details, please download the catalog.

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The "M2F" series temperature power sensor for room temperature use is a temperature-fixed bimetal thermostat. The main product, the temperature power sensor (TPS), is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats, while still being a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products. For more details, please download the catalog.

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The "M2" series temperature power sensor for room temperature use is a temperature-fixed bimetal thermostat. The main product, the temperature power sensor (TPS), is a high-performance control-type thermostat that can serve as a substitute for the higher-end electronic thermostats, while still being a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products. For more details, please download the catalog.

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The "M3(Z)" series temperature power sensor for room temperature use, rated at 5 Amps, is a temperature-fixed bimetal thermostat. Our main product, the temperature power sensor (TPS), is a high-performance control-type thermostat that can serve as a substitute for the higher-end electronic thermostats, despite being a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products. For more details, please download the catalog.

• Temperature and Humidity Control
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The "M3" series temperature power sensor for room temperature use, rated at 5 Amps, is a temperature-fixed bimetal thermostat. The main product, the temperature power sensor (TPS), is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats while still being a bimetal thermostat. It features small differential, long lifespan, compact size, and low price, with no competing products. For more details, please download the catalog.

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The "MQT8H(DS)" series temperature power sensor for normal temperature use is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats, while still being a bimetal thermostat. It features small differential, long lifespan, compact size, and low price, with no competing products available. For more details, please download the catalog.

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The MQT11K and MQT11H series temperature power sensors for normal temperature use are bimetal thermostats that can serve as high-performance control-type thermostats, replacing higher-end electronic thermostats. They feature small differential, long lifespan, compact size, and low price, with no competing products. For more details, please download the catalog.

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The "MQT8HT" temperature power sensor series for normal temperature use is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats, despite being a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products available. For more details, please download the catalog.

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The "MQT8KT" temperature power sensor series for normal temperature use is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats, while still being a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products available. For more details, please download the catalog.

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The "MQT8H" temperature power sensor series for room temperature use, rated at 2 Amps, is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats, even though it is a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products available. For more details, please download the catalog. *For use with controllers (for control) and protectors (for overheating prevention).

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The "MQT8K" series temperature power sensor for normal temperature use is a high-performance control-type thermostat that can serve as a substitute for higher-end electronic thermostats, while still being a bimetal thermostat. It features small differential, long lifespan, compact size, and low cost, with no competing products available. For more details, please download the catalog.

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This is an introduction to thermistors and the characteristics of thermistor control (advantages and disadvantages). ● Advantages: They are used as sensors for temperature measurement. The temperature range is approximately -50°C to 350°C. If the resistance value is known for a certain temperature, the temperature can be determined from the resistance value. An advantage is that when used in large quantities, they can be made inexpensively with a circuit board, electronic circuits, and power supply. ● Disadvantages: When used in small quantities, the cost increases, and the appeal of thermistors diminishes. Additionally, electrical components may not function properly due to cold, heat, or noise, making it necessary to be very careful about the installation environment. For more details, please download the catalog.

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The specifications list includes the certification details for the Temperature Power Sensor (TPS) and disk-type thermostats. For example, in the disk-type thermostat certification list, we present a table showing [03EN, 03EP, 05EN, 05EP (Phenol)] with [UL: (Standard Number) UL873 (Certification Number) E43274], [CSA: (Standard Number) CSA C22.2 No.24 (Certification Number) LR67165 LR67166], and more. For more details, please download the catalog.

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This is an introduction to the glossary of thermostat terminology. ● Differential (DIFF.) refers to the temperature difference in the ON/OFF state (also known as hysteresis). Control-type thermostats can maintain high precision in temperature control due to their small ON/OFF differential, but if the differential is too small, it can lead to an increased number of operations, resulting in a shorter lifespan. Therefore, it is important to select the optimal differential in the design. ● Tolerance refers to the allowable precision values for settings such as the target temperature. It is expressed as OFF setting value: 30℃±3 (℃) and DIFF.: 3–6 (℃). For more details, please download the catalog.

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The model designation method, for example, in the case of a temperature power sensor (TPS) [MQT8K K35XC1.5(DS)], includes the model name, a space, K for crossbar contacts, operating temperature, contact configuration (X,X,Y,Y), DIFF. rank display, tolerance display (for custom orders only), and double shield (indicating compliance with overseas standards). This varies significantly in the case of electronic thermostats (temperature variable type), electronic thermostats (temperature fixed type), high-temperature thermostats, and disc-type thermostats (for protectors). For more details, please download the catalog.

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We will introduce knowledge for creating a good temperature control system. A thermal control system consists of four elements: [User], [Power source such as heater or cooler], [Thermostat], and [Object to be heated]. Let's thoroughly investigate whether these four elements are being used in the best possible way. If we refine this sufficiently, there should be no defects. 1. For example, are you using an oversized heater to quickly raise the temperature of the object to the desired level relative to its heat capacity? If you can wait a little longer for the initial temperature rise, the lifespan may increase threefold. 2. Let's first reconfirm the ultimate goal of this temperature control and consider the surrounding materials. We should reconsider such matters. For more details, please download the catalog.

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To prevent the temperature rise of the control panel inside the engine compressor of the commercial air conditioning unit, the M3 30YB temperature power sensor 5Amp. series is adopted as a temperature control thermostat. The M3 30YB turns the fan ON at temperatures above 30℃ and turns it OFF at temperatures below 25℃. It controls the fan to maintain the temperature below 30℃. In this way, the temperature power sensor (TPS) can be easily used as an alternative to thermistor control. For more details, please contact us.

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I will explain the regional share of Temperature Power Sensors (TPS). It has been over 20 years since Temperature Power Sensors were introduced to the market. During this time, they have gradually penetrated the world with catchphrases such as "high-performance thermos that can replace electronic thermos at a fraction of the price." It is natural for advanced products like TPS to be adopted first in regions with significant technological accumulation. In developing regions, the manufacturing stage involves receiving designs from advanced regions, so it will take time before they reach the level of creating unique products using TPS. For more details, please download the catalog.

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As for the applications of the Temperature Power Sensor (TPS), even if electrical products of a nature that have never existed before are created, it doesn't necessarily mean they will become hits just because they are "cheap, high-performance, compact, and long-lasting." This is not always the case. For example, "this product excels in this aspect compared to similar products currently on the market," "although this is more expensive compared to this, it excels in this aspect," and "household appliances were satisfactory with conventional products since they are used in large boxes, but for communication devices, conventional products do not fit, so the temperature power sensor is just right." After accumulating these points over 15 years, I feel that it has finally been recognized in the market and its evaluation has become established since entering the 21st century. For more details, please download the catalog.

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As a method of displaying the contact configuration, our company manufactures thermostats used as controllers, which makes the display method more complex than in the case of protectors. In written form, it can be expressed as follows: ● Items that open with rising temperature are designated as X, and those that close with rising temperature are designated as Y, indicating the operating temperature during temperature rise (high temperature side). For the same items, if the operating temperature during temperature drop (low temperature side) is emphasized, we use the symbols X-bar (a line over X) and Y-bar (a line over Y). X-bar represents items that close with a decrease in temperature, while Y-bar represents items that open with a decrease in temperature. For more details, please download the catalog.

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I will explain about crossbar contacts (micro-capacity contacts). Our 2Amp and 5Amp series set the minimum current for regular contacts at 50mA, and anything below that uses crossbar contacts, referred to as K contacts. The range for crossbar contacts is set between 1mA and 100mA, so the shared range between regular contacts and micro-capacity contacts is between 50mA and 100mA. Please consider the range of crossbar contacts to be from 1mA to 100mA. Due to the small contact area, the likelihood of micro debris getting trapped within the contacts and causing poor contact is low. For more details, please download the catalog.

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As a practical method for measuring heat capacity, the thermal time constant is an accurate way to grasp the heat capacity of an object, but it is somewhat too academic for everyday practical use. Therefore, as a practical guideline, I have summarized in a table how well the thermostat's temperature can adapt to changes in ambient temperature compared to the thermostat's simple heat capacity. If the rate of change in ambient temperature is fast, the thermostat's thermal adaptation will be delayed; however, if the rate of change is slow, it can be seen that the thermostat can adequately keep up with the temperature changes. For more details, please download the catalog.

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In the thermal time constant of temperature power sensors, those with good thermal conductivity become familiar easily, while those with poor thermal conductivity take longer to become familiar. The degree of familiarity is expressed in terms of the thermal time constant. We measured the thermal time constants of the MQT8 series of temperature power sensors. The thermal time constant is represented by the time it takes to reach 60% of the temperature change range. As shown in the difference table, regardless of whether the temperature change range is large or small, if the object and measurement conditions are the same, the same values are indicated. The thermal time constants measured in air with a wind speed of 1 to 1.5 m are 102 seconds for MQT8, 160 seconds for M2, and 195 seconds for M3. In water, the thermal time constant is smaller because water is more effective at extracting heat from the object than air. For more details, please download the catalog.

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The outdoor surveillance cameras use the MQT8H 15XB, MQT8KT 7XB, and MQT8K 30YB from the room temperature temperature power sensor 2Amp series for anti-fogging, freeze prevention, and temperature rise prevention. The MQT8H 15XB is used for anti-fogging of the camera lens and controls the heater to around 15°C to 10°C. The MQT8KT 7XB is used for freeze prevention inside the housing during winter and controls the heater to around 7°C to 3°C. Additionally, the MQT8KT 30YB is used to prevent temperature rise inside the housing during summer and controls the exhaust fan to around 30°C to 25°C. In this way, they are used for various applications as temperature control thermostats. For more details, please contact us.

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The MQT8K 35YA, a 2Amp series temperature power sensor for normal temperature, is used for preventing temperature rise inside large printing machines. By installing the MQT8K 35YA inside the large printing machine and connecting it in series with the power line of the cooling device, it is possible to activate the cooling device when the temperature exceeds 35°C. This allows for simpler and more cost-effective temperature control compared to thermistor control. For more details, please contact us.

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When using a thermostat in a DC voltage circuit, it is important to pay attention to contact wear. Essentially, you should check the contact capacity according to the voltage/DIF. rank. In other words, for example, AC125V and DC12V can both handle up to 5A, while AC250V and DC24V can handle up to 3A at the same current. The mechanism by which contacts wear due to arcing consists of four elements: (a) the magnitude of the voltage, (b) the magnitude of the current, (c) the rate of contact separation and engagement, and (d) the material of the contacts and the condition of the contact surface. For more details, please download the catalog.

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As an alternative to thermistor control, the heater temperature protection for condensation measures around the power supply in the NTT/FOMA base station enclosure can be achieved with the MQT8K 45YB and MQT8K 60XC from the temperature power sensor 2Amp series designed for room temperature. Due to their compact shape, these controllers fit into small spaces. They can easily be used as temperature controllers as a substitute for thermistor control. For more details, please contact us.

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This is an explanation about lifespan under different loads. The mechanical lifespan of the temperature power sensor exceeds 2 million cycles, but when used under heavy load, the lifespan is limited due to contact wear. The lifespan indication is based on 100,000 cycles at rated load, so if used below the rated load, the lifespan will be even longer. For more details, please download the catalog.

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To accurately measure precipitation in cold environments, the MQT8K 6XBARC2 temperature power sensor from the 2Amp series is used for preventing freezing of sleet, snow, and equipment. By installing the MQT8K 6XBARC2 within the device and connecting it in series with the heater power line, the heater will activate when the temperature is between 8°C and 4°C (ensuring the heater is always ON at temperatures below 4°C) and will turn off at around 12°C. Due to its compact size and lack of need for a power supply, it allows for easy temperature control as a thermostat. For more details, please contact us.

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The disk-type thermostat "manual reset disk-type thermostat" is a manually resettable disk thermostat. The standard type is type 23. The disk-type thermostat is the ultimate protector that can reliably cut off large currents at a low price. It is believed that no alternative protector will appear for the time being. Additionally, it is dedicated for use as a protector (for overheating prevention). For more details, please download the catalog.

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This is an explanation about internal heat generation based on load. In electrical components such as relays, thermostats, and switches that open and close contacts, the load capacity is constrained by the heat generated at the contact points. Particularly, since thermostats are switches that operate based on temperature, the heat generated at the contact points affects the operating temperature and the differential. The contact capacity displayed on temperature power sensors is shown with a margin for heat generation. For more details, please download the catalog.

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To evaporate the drain water accumulated inside the main body of the electronic cooler used for preventing condensation in control panels and information communication racks, a temperature control thermostat with a normal temperature power sensor, the MQT8K 55XC series, rated at 2 Amp, is used. The MQT8K 55XC is set inside the main body to turn off the heater when the temperature rises above 55°C, thereby controlling it consistently. Due to its compact shape, it is a controller that fits into small spaces. It can easily be used as a temperature controller as an alternative to thermistor control. For more details, please contact us.

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The temperature control for the power supply peripherals around the security gate for entry and exit includes fan control for heat management and heater control for freeze prevention of the internal power supply peripherals in cold regions. The temperature control uses the room temperature power sensor series MQT8KT 35YB, MQT8K 5XBARC, and MQT8K -5XBARC. For fan control, the MQT8KT 35YB is set to turn the fan ON when the temperature exceeds 35°C, while the freeze prevention system is set to turn the heater ON when the temperature drops below 5°C and OFF when it rises above 10°C. Additionally, for abnormal conditions, the MQT8K -5XBARC is designed with a double safety feature to activate an alarm when the temperature falls below -5°C. For more details, please contact us.

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The infrared sensor of the security intrusion detector uses the MQT8K 5XBARC, a room temperature power sensor from the 2Amp series, as a temperature control thermostat for the heater control of peripheral devices around the internal power supply in cold regions to prevent freezing. It is set to turn the heater ON when the temperature drops below 5°C and OFF when it rises above 10°C. In this way, the temperature power sensor (TPS) can be easily used as an alternative to thermistor control. For more details, please contact us.

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The disk-type thermostat "automatic reset disk-type thermostat" is a standard automatic reset disk thermostat. The disk-type thermostat is the ultimate protector that can reliably cut large currents at a low price. It is believed that no alternative protector will appear for the time being. Additionally, it is dedicated for use as a protector (for overheating prevention). For more details, please download the catalog.

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The electronic thermostat "METII" is used for thermal management of control panels and information communication racks. The METII is set inside the main unit to turn ON when the temperature rises above 30℃ to 35℃. The set temperature can be freely changed, and due to its compact design, it can fit into small spaces. It can be used as an inexpensive thermistor control with high precision and a tolerance of ±1℃, serving as an alternative to expensive temperature controllers from other companies. For more details, please contact us.

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The medium and high-temperature thermostat and high-temperature fuse H101 are very rare fuses rated at 710°C, housed in a ceramic cylindrical case. The breaking capacity is 2A, compatible with both AC100V and AC200V, and the insulation resistance is AC1200V/sec after melting. It operates at a temperature lower than the melting setting when the current exceeds the rated value, so please check that the current does not exceed the breaking capacity. For more details, please download the catalog.

• Temperature and Humidity Control