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HD74LS03P Feature

• HD74LS03P Quadruple 2-input Positive NAND Gates(with Open Colletor Outputs)

HD74LS03P Overview

HD74LS03P Military/High-Rel:NTech.:TTLCircuits Per Package:4t(PLH) Maximum (S):32nFeatures:Open-Coll.Noise Rej. Max.:0.4P(D) Max. (W):22mNom. Supp Volt:5.0Minimum Operating Temp (øC):-20Maximum Operating Temp (øC):70Package Style:DIPMounting Style:T# Pins:14V(TM) at IT(AV) over « cycle« Nota Bene: Image is not true representation of part Nota Bene: Image is not true representation of part

Customer Reviews

*** Product Information and Prices Stored: Feb 29, 2012 13:05:55

Eaton Unveils Proportional Pressure Relief Valve

Eaton Corporation has introduced a high-flow proportional pressure relief valve with integrated control electronics. This plug-and-play unit has an industry-standard seven-pin connector hook-up. The new valve, designated KBCG5-3, complements Eaton's KB proportional valve series by extending the flow capability up 40 litres per minute while offering all the same features and functions of the range.

Colin Cooper, product manager of industrial controls for the EMEA region, said: 'This new valve is designed to help extend the flow rate options within our KB series and thereby broaden the scope of potential applications. 'It has all the features offered by the other units in the range plus an onboard pre-programmed amplifier to ensure the maximum consistency of functionality,' he added.

Features offered by the new KBCG5-3 valve and common to all units in the KB range as standard include: onboard digital electronics with ramp adjustment; IP65/67 environmental protection; a choice of voltage and current command supply; five different pressure settings; hysteresis and linearity stability; and electrical power-down 'failsafe' protection.

In addition to these features, the KBCG5-3's integral amplifier is pre-programmed with preset pressure ratings to help ensure consistent pressure gain settings and valve-to-valve performance repeatability. Options include voltage or current command supply and an external valve-enable function.

Ginetta G50 Race Cars Use Variohm Pressure Sensors

Leeds-based Ginetta Cars has chosen Variohm EPT3100 pressure transducers to monitor oil, fuel and water pressure across all of its G50 series of race cars. The 300bhp G50 'Cup' race car is exclusively used for the single-make Michelin G50 Championship, which starts again in April 2010. A newly introduced G50Z version features a 400bhp Ford Zytek engine and is aimed at top-level GT sprint and 24-hour racing.

The latest derivative, the G50HC (hot climate), is built for the Middle East race-car market and is designed for track temperatures up to +60C. Throughout the G50 series, the engine control unit and data logging systems are used to ensure optimum performance and Variohm's EPT3100 series pressure transducers are built for challenging applications where high performance and reliability need to be balanced with lightweight design, compact dimensions and a competitive cost.

The EPT3100's thin-film measuring cell and high-level-output circuit technology provide a pressure output from 0.25bar to 4,000bar in several range options, with accuracy better than +/-0.8 per cent and stability more than +/-0.1 per cent. Output options include 0-5V, ratiometric and 4-20mA with up to 32V input. For maximum durability, the EPT3100 features a 1,000g shock rating and a 25g peak vibration rating at 20-2,000Hz. The IP66-rated sealed sensor is housed in a hermetically welded 304 stainless-steel casing, weighing 60g and measuring 22mm in diameter and 54mm in length.

A choice of miniature or standard DIN43650 connectors, or flying leads, is designed to make installation and field replacement straightforward. To meet the demands of the gruelling conditions for all types of autosports - and the most challenging industrial applications - the EPT3100 has an over-range pressure rating of 2x and a burst pressure capability to 5x, with a rated life of more than 10 million pressure cycles. The EPT3100 is a part of a range of specialist sensors and transducers that Variohm Eurosensor supplies across the autosports industry, including Formula 1, A1GP, WTCC, GP2, Champ, Nascar, ALMS and Superbike.

The complete range includes pressure and temperature sensor solutions for fuel, oil, coolant and brakes as well as force, torque and position measurement sensors for suspension travel, throttle and gearbox. Laser and infrared technologies are also supplied for ride height position and tyre condition.

Peek Polymer Meets Bite-Stick Pressure Demands

When Dentronix has selected Victrex Peek for its High Heat bite-stick design, as the material can withstand the high temperature requirements of dry-heat sterilisers. Victrex Peek is a high-performance polymer used in a range of high-end medical applications. Mark Van Meter, engineer at Coltene Whaledent, said: 'We needed a material that was strong enough to withstand the forces associated with the bite and Victrex Peek polymer meets the bite-pressure requirements.

'Victrex Peek polymer gives the stick the ability to withstand at least 50 cycles in the dry-heat steriliser with no loss of properties, or change in shape or colour. The bite stick also needed to be able to withstand sterilisation in an autoclave, as well as sterilisation in solutions such as glutaraldehyde, peracetic acid and hydrogen peroxide.

Transducers For High Line Pressure Applications

RDP Electronics has announced that it has a range of transducers available for high line pressure applications where it is important to measure the differential pressure between two pressure ports.

Applications such as measuring the pressure across hydraulic cylinders, very high pressure filter measurement, or test applications where a very high line pressure or very high overload pressure is called for, can all be addressed with true wet/wet differential transducers.

Versions can allow differential pressure of 4,000lb/in2, for example, even where the line pressure may already be 5,000lb/in2. They are designed for the minimum possible error caused by variations in line pressure. Transducers are manufactured from stainless steel and versions are compatible with a range of fluids and gases.

XMD Pressure Transmitter Measures Level And Flow

Impress Sensors & Systems has introduced the XMD range of smart differential pressure transmitters for process-industry applications. The transmitters can be used for level measurement of closed, pressurised tanks; pump and filter control; or for closed-pipe flow measurement in conjunction with an orifice plate, Venturi or nozzle. The XMD range is ideal for flow applications due to the device's ability to switch the output from a standard linear output to a square-root extraction where flow rate can be output.

Target industries include chemicals, paper and pulp, petrochemicals, energy and power, food and dairy and pharmaceuticals. The XMD has a differential pressure range from 75mbar up to 2 bar and with a static over-pressure capable of 130 bar line pressures. The calibrated pressure range can also be turned down 10:1 times, which means that a 75mbar range can give a full-scale output at 7.5mbar, while still maintaining the 130 bar line pressure.

A 5:1 turn-down ratio maintains the accuracy of the transmitter, which is +/-0.1 per cent FSO. Outputs available are 4-20mA as standard with the option of having Hart communication. If this option is selected, the XMD is Atex-approved as standard. The device is safe for Zone 0/1 and an Ex d version is available with a flameproof enclosure for Zone 1 applications.

The XMD range is designed for harsh process manufacturing environments and so the electrical enclosure is a two-chamber aluminium die cast, powder coated with the option to include an integrated smart display. The optional display is an LCD with a visible range of 32.5 x 22.5mm. There is also a textual display and a 52-segment bar-graph that runs along the bottom of the display for easy interpretation of the output from the device. Even with this display option, the XMD is still rated to IP67.

Solenoid Valves Have Increased Pressure Ratings

Asco Valve has introduced its 8262/8263 series two-way direct-acting solenoid valves with increased AC and DC pressure ratings and real-time online configurator and ordering. The valves are ideal for applications in industrial and agricultural machinery, food products machinery, laundry and dishwashing appliances, and medical and analytical instruments.

The 8262/8263 series valves come in normally-closed, brass and stainless-steel constructions. They can be used to control the flow of air, water, and light oil and are available in 1/8in, 1/4in, and 3/8in pipe sizes. The online configuration tool allows a customer to quickly build a valve to meet a set of specific requirements.

It then displays the list price, availability, 3D CAD drawings, and specifications for the configured product. The configurator generates an order code for the valve that permits an immediate online purchase, greatly simplifying the reordering process. Most of the 8262/8263 series valves are available through the Asco Today same-day shipping programme.

Pressure Regulators Ensure Constant Gas Supply

Dome-loaded 797 LE-HD gas-controlled pressure regulators from Witt can provide an economic and safe solution to ensure gas cutting systems receive a constant gas supply, according to the manufacturer. The company said this system of gas regulation is more economical than using a full electronic control system. In one application the three inlet lines for oxygen and propane are supplied via Witt pressure regulators to optimise the automatic gas supply.

The gas control was regulated using proportional valves with changes in the gas pressure being adjusted by pressure changes, thereby controlling the cutting process. Witt pressure regulators can be used for numerous applications with a range of flow rates and gases. They are used as a primary pressure regulator, which can be installed in any orientation, in gas supply pipeline systems to ensure a consistent stable pressure up to a flow of 2300m3/h and are independent of any inlet pressure fluctuations in the gas supplies, including gas withdrawals.

They are also suitable for use in shipyards, chemical processing plants, offshore and diving vessels, glass making as well as steel making and foundry applications. Other features include integrated pilot pressure and pressure gauge connections as well as being able to centrally regulate several gas supplies to the same working pressure, while the compact design enables them be installed in confined spaces. The maximum pre-pressure for the 737LE-HD is 240 bar with a regulating range from 2-45 bar.

IFM Announces Pressure Sensor Series

IFM Electronic has launched the PMP series of pressure sensors. The PMP series features hygienic design, high accuracy, connectivity and suitability for hazardous areas. Via Profibus PA the PMP series can offer extended diagnostic capabilities beyond just the signal processing. The high degree of accuracy of 0.2 per cent is achieved by electronic temperature compensation and improved temperature decoupling.

The flush process connection is via IFM's EHEDG-certified modular hygienic adapter system, allowing integration via common process adapters, ideal for CIP or other applications. Via Profibus PA, the PMP series offers extended diagnostic capabilities beyond signal processing. To ensure this, the unit carries out self-tests while in operation.

The diagnosis status can be polled cyclically or acyclically via the Profibus master. Food and pharmaceutical processes may give rise to explosive vapours or dust clouds, leading to classification of the working area as a hazardous zone under DSEAR/ATEX. Four units of the PMP range are certified 1G and 1D/2D for these applications. The pressure range that the PMP series will monitor is split over four common spans in separate devices.

Tyre Pressure Monitor Has All Wheels Covered

System includes precision aerospace pressure sensors, transmitters, receiver and all necessary mounting equipment in a carrying case. The Techmor TP-1 allows accurate measurement of tyre pressures while on the track or the road Outputting at 4Hz, the TP-1 provides a smooth datastream that makes subtle pressure variations on track visible. A transmitter mounted to each hub sends wireless messages to a single receiver mounted inside the car.

The pass-through titanium valve-stem sensor allows pressures to be checked and adjusted without removing hardware. Systems can be quickly installed on any standard Nascar hub and switched between wheel sets and cars with no extra equipment. Outputs are available in analogue, RS232 or CANbus. The system includes precision aerospace pressure sensors, transmitters, receiver and all necessary mounting equipment in a carrying case.

Pressure Indicators Preserve Safety

Jofra IPIs can be used as a calibration reference or in applications where high-accuracy pressure measurement is required, from safety valve checks to system pressure verification. Ametek Calibration Instruments' Jofra range of industrial pressure indicators (IPIs) is now ATEX and CSA-certified for use in potentially explosive environments in the field or in calibration laboratories. ATEX is the primary intrinsically safe standard in the European Union, while CSA refers to relevant Canadian and USA standards.

Accurate to +/- 0.05% FS, the IPI can be used as a calibration reference or in applications where high-accuracy pressure measurement is required, from safety valve checks to system pressure verification. This new certification will allow the IPI to be used in any industry where there is a risk of flammable gases. These include oil refineries, offshore platforms, chemical plants, gas production plants, oil and gas shipping.

Intrinsically safe Jofra IPI indicators are available in 10 different pressure ranges. They combine the simplicity of an analogue gauge with the accuracy and easy to read display of a digital calibrator to provide versatile and easy to use units with a fast and straightforward setup, intuitive functions, application flexibility and a long battery life. An RS232 interface is supplied as standard which can be used for configuration, calibration and to transfer measurement data from the gauge.

It enables the Jofra IPI to be used as a pressure reference with JofraCAL software, which in turn provides control of a complete calibration procedure, storage of results and a calibration audit trail through hard-copy certificates. Once the gauge is configured, settings can be locked and password protected to prevent unauthorised changes.

Pressure And Temperature On The Record

The PRTC210 pressure and temperature recorder is compact, portable and easy to use.
New from MadgeTech, the PRTC210 is a pressure and thermocouple based temperature recorder with a 0.125in NPT fitting. The external thermocouple channel allows for insertion into a pipeline with a compression fitting, and the 0.125in NPT can be connected to a female fitting.

This provides an instant temperature and pressure response of what is flowing through the pipeline. The PRTC210 accepts thermocouple types J, K, T, E, R, S, B and N and is available with pressure ranges of 0-2, 0-6.9, 0-21, 0-34.5, 0-69 and 0-345bar.

The device can measure and record 21,844 readings per channel and has a battery life of up to 2 years. The PRTC210 is compact, portable and easy to use. It can be started and stopped directly from a PC, and its small size allows it to fit almost anywhere. As with all MadgeTech products, the data are downloaded and viewed using the MadgeTech software. The PrTC210 is priced at US $649.

Programmable Pressure Sensors

TURCK USA introduces new programmable pressure sensors that combine high accuracy and performance with simple programming, resulting in an extremely user-friendly sensor. The PS400 and PS500 sensors are easily programmed via three controls: two push buttons for scrolling through programming features and one recessed enter key. The menu is clear and concise to allow parameters such as set points, reset points, output functions, analog ranges, and a range of special options to be programmed with ease. The menu also includes an optional electronic lockout that disables the push buttons from functioning until the lockout is removed.

The high accuracy programmable pressure sensors are specified with a switch point accuracy of ≤+/- 0.5 percent, generally exceeding what is required by the machine engineering sector. The combination of high accuracy and flexible programming often allows a single sensor to replace several conventional sensors (with varying sensing ranges) resulting in a significant reduction in inventory.

These TURCK sensors feature a large, bright 4-digit, 7-segment LCD display with a constant indication of pressure in either psi (pounds per square inch), bar, kPa (kilopascals), or MPa (megapascals). This display is tilted at a 45° angle, and can be inverted electronically for easy reading in a variety of applications. The PS400 and PS500 pressure sensors are encased in compact, 34 mm diameter housing with various threaded connections for simple, versatile installation. The PS500 series also features a process connection that allows the housing to rotate 360 degrees for optimal viewing prior to locking the sensor in place.

The innovative PS400 and PS500 pressure sensors were designed to tolerate tough applications. Stainless steel housing with an integrated stainless steel M12 eurofast ® connector enables fast and reliable installation. The sensors also offer a variety of stainless steel pressure connections including G1/4 and 1/4-18NPT threads.

The sensors are highly resistant to overpressure and burst pressure, yet they also incorporate a patented medium stop system that prevents leakage when these levels are exceeded, which immediately seals the sensor if the pressure cell has been damaged. All of these features were incorporated to create a pressure sensor ideal for use in virtually any application.