司測研 List of Products and Services

Features (1) There are amplifiers suitable for measurement modes such as absolute pressure, gauge pressure, and differential pressure. SPX-A: For absolute pressure sensors SPX-G: For gauge pressure sensors SPX-GH: For high-speed response gauge pressure sensors SPX-D: For current output type differential pressure sensors (2) Good linearity achieved by using high-precision operational amplifiers (3) Built-in excitation power supply for highly stable pressure sensors (4) Compact size allows for panel mounting.

• Pneumatic Equipment

The amplifier for reluctance-type differential pressure sensors in the DPC series from Soseki Research is designed to match our models such as P7D, P3D, and P90D differential pressure sensors. The DPC-1 is a rack-mountable amplifier that is also ideal for multi-channel applications. (Measuring Principle) When pressure causes the pressure-sensitive membrane to displace, a change in magnetic resistance occurs, resulting in a change in the differential inductance of L1 and L2. This change is output as a small carrier voltage change due to the carrier voltage applied to the bridge. This voltage is amplified by a carrier amplifier, synchronously demodulated (demodulated), the carrier component is removed by a filter, and then DC amplification is performed to obtain the output.

• Pneumatic Equipment

The multiplex basic particle sensor system enables measurements of particle number (PN) and particulate matter (PM), as well as measurements using ionization, scattered light, and opacity sensors. It is introduced at https://www.sokken.co.jp/gas/202305/entry678.html. Overview The 3DATX parSYNC FLEX(TM)iPEMS, an integrated portable emission measurement system, performs measurements of gases and nanoparticles using a unique cartridge system. The "hot swap" feature of the gas cartridge allows for the acquisition of emissions data for four gas measurements, NOx measurements, and nanoparticle measurements. Additionally, the multiplex basic particle sensor system provides the capability to capture multiple different "images" of particles using ionization, scattered light, and opacity sensors, in addition to outputs for particle number (PN) and particulate matter (PM). Rugged and weather-resistant. Easy maintenance and operation (measurements can be taken in under 15 minutes on any vehicle).

• Other measurement, recording and measuring instruments

This is a compact and lightweight air-fuel ratio meter utilizing a layered zirconia ceramic UEGO sensor. By simply attaching the sensor to the exhaust pipe, you can easily measure the air-fuel ratio. Features: > Compact and lightweight with easy operation > Wide dynamic range (9.5–60 AFR) > Fast response time of T10-90 < 250 ms > Compatible with DC 12V operation (suitable for in-vehicle measurement) > Fully compatible with PLR-5 (previous model) > Selectable analog output of 5V/10V > Standard equipped with RS-232C, USB, and LAN FAQ Can the PLR-7 be used for performance testing of hydrogen engines? Our air-fuel ratio meter can also be used for performance verification of hydrogen engines. Please contact us for more details. Is it compatible with alcohol-based fuel engines? It can accommodate all engines, including hydrocarbon and alcohol-based fuels, as it allows you to set the H/C and O/C ratios of the fuel. Can the sensor for PLR-5 be used with PLR-7? Yes, it can be used. The parameters can also be used as they are.

• Other measurement, recording and measuring instruments

High-precision air-fuel ratio measurement can be achieved without being affected by coexisting gases such as HC and CO generated during rich combustion. By combining a dilution mechanism using a capillary and an oxidation catalyst, the residual oxygen concentration is measured with an oxygen concentration cell-type zirconia sensor, and the air-fuel ratio is calculated. Features: > Not affected by back pressure fluctuations > Accurate air-fuel ratio measurement even during cold starts or misfires > Wide dynamic range (7–100 AFR) > Response time of T10-90 < 300 ms FAQ Is it compatible with alcohol-based fuel engines? Yes, it can accommodate all engines, including hydrocarbon-based and alcohol-based fuels, as the H/C and O/C ratios of the fuel can be set. What is the replacement cycle for the MCS-3 catalyst? The sample time is 200 hours (oxidation efficiency can be confirmed using model gas).

• Other measurement, recording and measuring instruments

The multi-point pressure unit (Model MP8-X), barometer, multi-point temperature logger, tachometer, vibration meter, analog signal input unit, etc., can be equipped, allowing for the configuration of measurement sections according to the customer's needs. Each measurement unit is equipped with data recording capabilities by connecting to a computer via a serial interface or LAN. An operation control unit can be added, which not only allows for engine start/stop but also has a constant display function for monitoring items, and in the event of an anomaly, it can send appropriate signals to other devices to stop the engine. The data processing unit can record measurement data, perform averaging and calculation processing, and display time-series data in graph form. (The representative device photo is of the operation control unit.)

• Pressure

To generate pulsating flow that can accommodate low to high engine speeds, a cross-flow rotary cylinder valve capable of producing four pulses per revolution is used. By varying the rotation speed of this valve, a wide range of pulsation frequencies can be achieved. The basic flow rate that serves as the foundation for the pulsating flow is adjusted by a valve installed in a bypass circuit connected in parallel with the pulsating flow generation circuit, allowing the flow rate to be changed by adjusting the valve opening.

• Other measurement, recording and measuring instruments

The compact body equipped with a pressure regulation mechanism that can follow mode driving is easy to move and install. It is currently being introduced in https://youtu.be/orFt8TZGuRU. Features: - Simulates intake pressure up to an altitude of 4500m - Supports mode driving including starting and idling stop - Wide flow range & compact design Applications: - Evaluation of engine startability - Evaluation of drivability - Emission evaluation during mode driving Advantages of this product: This product reduces the intake air pressure of the engine, easily simulating the decrease in engine output at high altitudes with thin air using a chassis dynamometer or engine bench. It minimizes the need for actual vehicle testing at high altitudes, contributing to reduced development costs and time. Altitude 4500m & Maximum flow rate 13500L/min: The intake air pressure of the engine can be reduced to -40kPa (approximately 60kPa atmospheric pressure), equivalent to an altitude of 4500m. The air flow range covers up to 13500L/min (converted to 101.3kPa, 20°C), accommodating a wide variety of vehicle types. Mode driving support, compact design, easy operation, and consideration for safety.

• Flow Meter

The structure is designed to direct the total exhaust gas from a vehicle or engine, adjusted to the output and rotation speed specified by regulations, into this device, and then discharge it externally via a valve. When the vehicle or engine is connected in an operational state, closing this valve increases the exhaust pressure, while opening it decreases the pressure. The opening and closing of the valve applies pressure load to the muffler, and the valve will be opened and closed continuously up to the specified number of times (2500 times) at the specified pressure (35 kPa). For hard specifications, functional specifications, basic configuration, appearance diagrams, etc., please visit https://www.sokken.co.jp/special/202309/entry708.html.

• Pressure

This is a unique product that encapsulates internationally certified chemical fire extinguishing agents (3M NOVEC 1230, FK-5-1-12) in microcapsules, molded into shapes such as plates, strings, and tapes. It requires no fire sensors or wiring, making installation very simple—just stick it on or hang it up. It is renowned for its patented technology and high quality certified by the Korea Fire Industry Technology Institute (KFI). When temperature rises due to ignition or electrical leakage heating, the microcapsules self-burst and automatically release a powerful chemical fire extinguishing agent. It demonstrates high initial extinguishing effectiveness even in hard-to-monitor areas, such as during unattended charging or inside the hood of a vehicle. The plate type is ideal for box-shaped electrical products like auxiliary batteries, ABS/ESC module power units, and chargers. The tape type is easy to apply to wiring areas prone to ignition, such as wire joints and electrical terminal connections, while the string type can simply be hung inside distribution boards. For inquiries about usage, technical support, or physical chemistry information, please consult with Shisokuken. https://youtu.be/iVPWnaw9_r4

• others

The pressure gauges provided by Sokken can be broadly categorized into four types: - Absolute pressure gauge → Pressure based on a vacuum - Differential pressure gauge → Pressure between two points isolated from the atmosphere - Gauge pressure gauge → Pressure based on atmospheric pressure - Compound pressure gauge → Pressure consisting of gauge pressure based on atmospheric pressure and vacuum pressure Selecting a model that meets your requirements among these, which also vary in measurement accuracy, measurement range, and responsiveness, requires considerable effort. To alleviate this burden and facilitate the easy selection of the most suitable model for various applications, we have prepared a selection guide.

• Pressure

The "GSM Series" is a filter-type smoke meter that allows for easy measurement of the smoke concentration in engine exhaust. It fully automates the processes of sampling, measurement, and filter paper feeding, and includes a variable model that enhances detection sensitivity to accommodate low concentrations. Additionally, it is equipped with external control options compatible with engine control systems. 【Features】 ■ Automated measurement sequence ■ Good reproducibility and high detection sensitivity ■ Support for external control *For more details, please refer to the PDF materials or feel free to contact us.

• Other measurement, recording and measuring instruments

The "GSM-20" is a filter-type smoke meter equipped with a standard communication port. Designed for development in research institutions aiming for global expansion, this device can perform measurements compliant with both JIS and ISO standards. Leveraging our long-established smoke measurement technology, it is the successor to the "GSM-10," which realized a dual-purpose device. 【Features】 ■ Improved temperature characteristics with the adoption of a temperature-compensated photodetector ■ Variable capacity sampling using a sonic nozzle ■ Compact and lightweight (35% reduction compared to our GSM-10) ■ Simple structure for easy maintenance *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments

The "Sokken Comprehensive Catalog 2018 Edition" is a comprehensive catalog from Sokusoken Co., Ltd., which provides measuring instruments related to automotive research and development. It features a wide range of products that support measurements related to engine performance, including intake air flow, pressure measurements at various parts, exhaust gas components, and emitted particles. The lineup includes flow meters such as the "LFE Series," which generates a differential pressure proportional to volumetric flow, as well as high-precision pressure gauges like the "PHN-22" and exhaust particle number measurement devices like the "PMS-MS." [Contents] ■ Flow Meters ■ Pressure Gauges ■ Fine Particle Counters ■ Gas Analyzers ■ Smoke Meters ■ Special Equipment *For more details, please refer to the PDF document or feel free to contact us.

• Testing Equipment and Devices
• Other inspection equipment and devices
• Flow Meter

The "HES-225" is a device that reduces the intake air pressure of an engine to simulate the decrease in engine output at high altitudes. Its compact body, equipped with a pressure regulation mechanism that can follow mode driving, makes it easy to move and set up. It contributes to saving costs and time for high-altitude testing in research and development. 【Features】 ■ Simulates intake pressure up to an altitude of 4500m ■ Supports mode driving including starting and idling stop ■ Wide flow range & compact design *For more details, please refer to the PDF materials or feel free to contact us.

• Testing Equipment and Devices
• Other inspection equipment and devices

The SCH-101 is a charge amplifier used for charge-voltage conversion of charge output type piezoelectric sensors. It can be used with various piezoelectric sensors, starting with KIG, AVL, and PCB. Designed for internal combustion engine measurements, it removes excessive specifications to focus on economy, usability, and reliability. 【Features】 ■ Achieves low cost through a minimal and simple functional configuration ■ Usable with sensors from various manufacturers as long as they are charge output type piezoelectric sensors ■ Sufficient performance in important areas such as low-frequency characteristics and high-frequency characteristics ■ Can be equipped with an ultra-wideband isolation amplifier as an option to eliminate ground noise specific to piezoelectric types * For more details, please refer to the PDF materials or feel free to contact us.

• Pressure

The "PZ-77" is a differential pressure gauge that employs diffusion-type strain gauge technology. The important sensing element is completely sealed from the atmosphere and immersed in high-purity silicone oil, with a structure that completely separates the pressure receiving part from the sensing part. This technology ensures high precision of ±0.1% FS, achieving a pressure gauge that excels in high line pressure, overpressure, and temperature characteristics. 【Features】 ■ Despite high sensitivity, it can withstand overpressure and high line pressure ■ Minimal impact on differential pressure accuracy due to line pressure ■ The pressure receiving part is made of corrosion-resistant material and can be used with liquids ■ Long-term accuracy of ±0.25% guaranteed for 3 years *For more details, please refer to the PDF document or feel free to contact us.

• Pressure
• Other measurement, recording and measuring instruments

The "PA-88" is an absolute pressure gauge developed for measuring absolute pressure in liquids and gases. It establishes a high precision of ±0.1% full scale, and also has excellent long-term stability within ±0.25% full scale over three years (excluding the AL type). 【Features】 ■ High precision of ±0.1% FS established by a special differential diaphragm ■ High overpressure limit of 1 MPa, ensuring it won't be destroyed even with incorrect use ■ Compact and easy to use, suitable for liquids, gases, and corrosive fluids ■ Structure that makes it very easy to remove bubbles when using liquids ■ The amplification display has a high display resolution of full 4 digits + 1 *For more details, please refer to the PDF materials or feel free to contact us.

• Pressure
• Other measurement, recording and measuring instruments

The "PEN-33" is a digital pressure gauge that can be used for measuring gases and liquids. It has various measurement modes for gauge pressure, compound pressure, absolute pressure, and differential pressure. The accuracy is ±0.3% FS, with long-term stability of ±0.5% FS/year, and it comes standard with an analog output based on 0-10(V). It is possible to specify options such as a sensor external type that allows for pressure measurement considering frequency response, high-temperature use, and liquid degassing, as well as pressure unit conversion and pulsating pressure averaging filters. 【Features】 ■ High precision of ±0.3% FS achieved by SUS diaphragm silicon diffusion type pressure sensor ■ External type sensor that demonstrates power in responsiveness and high-temperature environments (optional) ■ Compact and easy to use, suitable for both liquids and gases ■ Standard equipped with analog 0-10(V) output ■ Compatible with various measurement modes for gauge pressure, compound pressure, absolute pressure, and differential pressure *For more details, please refer to the PDF document or feel free to contact us.

• Pressure
• Other measurement, recording and measuring instruments

The 『PHN-22』 is a digital pressure gauge that can be used for measuring gases and liquids. It has various measurement modes for gauge pressure, differential pressure, and absolute pressure. The accuracy is ±0.1% FS, with long-term stability of ±0.25% FS/year, and it comes standard with an analog output of 0-10(V). It is possible to specify options such as a sensor that allows for pressure measurement considering conditions like frequency response, high-temperature use, and liquid degassing, as well as pressure unit conversion and pulsating pressure averaging filters. 【Features】 ■ High precision of ±0.1% FS achieved with SUS diaphragm silicon diffusion-type pressure sensor ■ Sensor external type that excels in responsiveness and high-temperature environments (optional) ■ Compact and easy to use, suitable for both liquids and gases ■ Standard equipped with analog 0-10(V) output ■ Capable of supporting various measurement modes for gauge pressure, differential pressure, and absolute pressure *For more details, please refer to the PDF document or feel free to contact us.

• Pressure
• Other measurement, recording and measuring instruments

The PS-11 is a pressure gauge used for measuring the differential pressure of DPF as an exhaust countermeasure for diesel engines. It is equipped with a standard 10-fold sensitivity switch that allows for accurate measurement of the initial differential pressure, which is crucial for the durability of the DPF. Additionally, it has a pressure resistance of 1 MPa, providing a margin of 20 times the measurement range to withstand excessive pressure caused by exhaust pipe afterburn during the engine development process. It offers an accuracy of ±0.1% FS, long-term stability of ±0.25% FS over 3 years, and can be reliably used for extended periods with automotive exhaust gases, corrosive liquids, and gases, thanks to its SS316 stainless steel diaphragm. 【Features】 ■ High precision of ±0.1% FS with a special differential diaphragm pressure sensor ■ Compact and easy to use, suitable for automotive exhaust gases, liquids, and gases ■ Standard analog output of 0-10V ■ Full display of 4 digits ■ Large line pressure and excessive pressure of 1 MPa, with very few failures ■ Compact size suitable for vehicle installation *For more details, please refer to the PDF document or feel free to contact us.

• Pressure
• Other measurement, recording and measuring instruments

The "UHP-808" is a digital pressure gauge that measures ultra-high pressure in the range of 70 to 700 MPa for liquids and gases. It uses a method where a foil strain gauge is bonded to an ultra-high pressure strain cylinder, measuring ultra-high pressure values through the conversion of ultra-high pressure to strain and the change in strain gauge resistance. It is used for measuring ultra-high pressures such as diesel engine common rail pump pressure, ultra-high pressure leak testing, high-pressure sterilization in food processing, and underground internal pressure. 【Features】 - Due to the ultra-high pressure strain cylinder method, the volume change of the pressure-receiving part due to pressure is small. - High precision of ±0.1% FS (±0.3% FS for 700 MPa). - The standard piping connection for the pressure sensor features a Swagelok connection known for its leak-proof performance. - Proven results in diesel common rail pump pressure and ultra-high pressure leak testing. *For more details, please refer to the PDF document or feel free to contact us.

• Pressure
• Other measurement, recording and measuring instruments

The "SBM-2200" is a flow meter designed to measure the flow rate of blow-by gas (blow-by) that enters the engine's crankcase. Measuring blow-by flow is used as a means to understand the wear conditions of piston rings, valve sleeves, and cylinders. This product utilizes the principle of Kármán vortex, allowing for the measurement of blow-by flow without being affected by the density or viscosity of the fluid. 【Features】 ■ Does not select the physical properties or gas composition of the fluid being measured (however, it is not compatible with hydrogen engines) ■ Can measure gas flow even in the presence of liquid droplet contamination ■ Simple structure and easy maintenance *For more details, please refer to the PDF materials or feel free to contact us.

• Flow Meter

The "VAV-EGF6" is a venturi-type flow meter that directly measures the exhaust flow rate of an engine. The position of the movable core is adjusted according to changes in flow rate, and the cross-sectional area of the venturi throat is controlled at high speed. This variable venturi mechanism achieves a wide dynamic range with a ratio of minimum measurable flow rate to rated flow rate (accuracy guarantee range) of approximately 30 times, while maintaining a total pressure loss of less than 0.5 kPa. 【Features】 ■ Variable cross-sectional area venturi that achieves low pressure loss and a wide flow range ■ Pulsation damping device (surge tube) that reduces measurement errors caused by pulsation ■ PC software for modal mass measurement ■ Flow calibration and high-temperature flow verification tests conducted *For more details, please refer to the PDF document or feel free to contact us.

• Flow Meter

The "LFC-300" is a flow calculator specifically designed for the laminar flow meter LFE series. Equipped with a differential pressure gauge, absolute pressure gauge, and thermometer, it allows for easy measurement of volumetric and mass flow rates simply by connecting to the laminar element. It features a high-precision pressure gauge with excellent long-term stability, achieving a flow accuracy of FS ±1.0%. 【Features】 ■ Usable with all laminar elements of the LFE series ■ Measurement functions for instantaneous flow (volumetric and mass), flow integration, pressure, and temperature ■ Standard equipped with 2 channels of analog output and 8 ports of general-purpose input/output ■ Standard equipped with USB, RS-232C, and Ethernet communication ■ Reliable flow accuracy ■ Covers a wide range from micro flow of 10 mL/min to large flow of 500 L/s *For more details, please refer to the PDF document or feel free to contact us.

• Flow Meter

This catalog is a comprehensive catalog of the laminar flow air flow meters "LFE series," suitable for measuring air flow rates in applications such as engines and blowers. Laminar flow air flow meters (laminar flow meters) are characterized by low pressure loss, and the sonic nozzle, which experiences minimal aging, exhibits excellent performance in flow control. 【Features】 ■ A total of 31 models with rated flow rates from 10 mL/min to 500 L/sec ■ Pressure loss of 0.8 kPa or less, linearity of ±1% FS ■ Easy calculation of volumetric flow and mass flow ■ Dedicated calculator available *For more details, please download the PDF or contact us.

• Flow Meter

This catalog is a comprehensive catalog featuring a wide range of pressure gauges from Tsuisokuken Co., Ltd., which handles flow meters and particle counters. Our pressure gauges utilize pressure sensors that can accommodate corrosive gases and liquids. We offer pressure gauges that cover all types of pressure, including gauge pressure, vacuum pressure, absolute pressure, differential pressure, and achieved pressure. [Contents] ■ General-purpose pressure gauges ■ Plug-in pressure gauges ■ Pressure gauges for specific applications ■ Pressure measurement-related equipment *For more details, please download the PDF or feel free to contact us.

• Pressure
• Other measurement, recording and measuring instruments