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Sensors Monitors & Transducers -> Sensors & Detectors -> Electrical Sensors


Electrical Sensors





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Conductivity Level Probes resist heat and corrosion.

Conductivity Level Probes resist heat and corrosion.

Dwyer Instruments, Inc.
Michigan City, IN 46361 0373
Aug 28, 2008 Mounted in any orientation in tank, tee fitting, or any compatible threaded port, Series CLP determines presence of conductive liquid at set level by sensing conductivity. Probes allow for measurement of conductivity between probe fitting and end, which is isolated by ceramic insulator, or between ends of 2 probes. Offered with ½ in. NPT process connection, probes feature solid stainless steel end for resistance to heat and corrosion.

Environmental Monitor provides real-time power information.

Summit Microelectronics, Inc.
Campbell, CA 95008
Aug 27, 2008 Providing real-time output voltage and input current monitoring for power control, SMM151/2/3 features I²C interface, non-volatile memory, 256 bytes general-purpose EEPROM memory, and 2 general-purpose voltage comparators. Devices allow input current and differential output voltage monitoring via integrated 10-bit A/D conversion. While SMM151/2 provide output voltage margining with 0.3 V to VDD (up to 5 V) range, SMM152/3 also integrate 4 GPIO.

Transformer has rated voltages range from 72-800 kV.

Transformer has rated voltages range from 72-800 kV.

ABB Ltd.
Zurich CH-8050  Switzerland
Aug 22, 2008 Suited for high voltage network applications, Magneto optical current transducer (MOCT-P) optical instrument transformer has free-standing sensor column that communicates with rack mounted electronic module, located in control house, by means of 200/230 multimode optical fibers. It features multiple analog 200 mV low voltage outputs, SF6 free design, and accurate reproduction of fault events. Unit can be used in transmission line, bus, transformer, breaker, or distribution schemes.

Current Sensor measures AC current up to 30 A.

Phidgets, Inc.
Calgary, AB T2M3R7  Canada
Aug 21, 2008 Designed to connect into analog input on 1018 PhidgetInterfaceKit 8/8/8 or on PhidgetTextLCD, Model 1122 AC/DC Current Sensor measures AC current up to 30 A and DC current from -30 to +30 A. Features include current conductor resistance of 1.5 mW, output impedance of 1 kW, and active current consumption of 10 mA. Maximum measureable AC frequency is 10 kHz.

Fault Finder detects breaks and bends in optical fiber.

Fault Finder detects breaks and bends in optical fiber.

Video Products, Inc.
Aurora, OH 44202
Jul 31, 2008 With visible 635 nm red laser, FIBER-CHECKER can be used on fiber optic cable up to 3 km long to locate broken splice or fiber, identify overly tight cable ties, or isolate damaged connector. Break or bend in fiber is indicated by red light escaping from cable at fault point, and laser output from cable ends is clearly visible when facing flat surface approximately 6 in. away. Unit can be used to test all fiber connectors with 2.5 mm ferrule.

Five-Channel Voltage Supervisor reduces system board space.

Catalyst Semiconductor
Sunnyvale, CA 94089
Jul 14, 2008 Integrating 5 channels into one 8-lead MSOP, CAT885 gives designers high reset threshold accuracy (±2%) and minimal power consumption for monitoring power supply (Vcc) status of MPU, MCU, ASIC, or other system processor. It features open-drain output, active-low function with manual reset to perform system reset, and monitoring functions for range of electronic products. Two voltage detectors are factory-set, and remaining 3 voltage monitors are adjustable.

Single-Channel Voltage Monitors draw 500 nA quiescent current.

Single-Channel Voltage Monitors draw 500 nA quiescent current.

Linear Technology Corp.
Milpitas, CA 95035-7417
Jun 23, 2008 Supplied in 2 x 2 mm DFN or ThinSOT(TM) packages, LTC2934 and LTC2935 are suited for single Li+ coin cell, AA, AAA, and other portable, battery-powered applications. Model LTC2935 has 3 binary inputs that allow selection of one of 8 integrated reset thresholds, from 3.3-2.25 V, in 150 mV increments. Model LTC2934 allows external resistive divider to finely set reset threshold anywhere from 1.6-6V. Reset thresholds in both devices are ±1.5% accurate over temperature.

Conductance Probe provides trouble-free level measurement.

Conductance Probe provides trouble-free level measurement.

Motor Protection Electronics, Inc.
Apopka, FL 32703
Jun 18, 2008 Available in 1-, 3-, and 10-point versions with 50 or 100 ft cable lengths, The Level Probe features blue and white PVC body with Avesta 254 Stainless Steel Sensors. Outer jacket of cable is PVC, and each individual conductor jacket is also PVC. Conductor wire is 18 AWG, tinned copper, with each conductor identified by number that corresponds to sensor position on probe. All 10-point probes are available with spacings between stainless steel sensors of 5, 6, 8, 10, and 12 in.

Voltage Supervisors come in 8-pin MSOP packages.

Voltage Supervisors come in 8-pin MSOP packages.

STMicroelectronics
GENEVA   Switzerland
Jun 12, 2008 With ability to monitor up to 5 channels, STM6904/5 four- and five-channel voltage supervisors ensure integrity of multi-voltage systems such as set-top boxes, telecom and networking equipment, computing and data-storage systems. Model STM6905 offers 5 monitored channels and fixed delay-to-reset time of 210 ms, whereas STM6904 offers additional user-selectable reset delay times while monitoring up to 4 channels. Units operate from 0.8-5.5 V across -40 to +85 °C industrial temperature range.

Current Transducers monitor automotive batteries.

LEM Holding SA
Plan-les-Ouates CH-1228  Switzerland
Jun 02, 2008 Designed to measure dc, ac, or pulsed current from ±40 to ±100 A, HAB 60-S transducers provide PWM output signal proportional to primary current being measured and operate from unipolar 5 V supply. They use open-loop, Hall-effect technology that helps simplify installation and servicing by eliminating need to cut primary cable carrying measured current. Electric offset error is 0.075 A across temperature range from -10 to +65° C and 0.15 A across full range from -40 to +125°C.

Hand Tools include integrated voltage sensor.

Hand Tools include integrated voltage sensor.

Del City
Milwaukee, WI 53209
May 30, 2008 Featuring ergonomic, cushioned handles, line of Circuit Alert(TM) Tools includes screwdrivers, wire strippers, pliers, flashlights, and utility knives, all with built-in removable voltage detector that produces audio and visual alert when it detects live circuit. Tools are made of forged steel for light weight, and many are multifunctional for completing variety of tasks.

Visible Laser Source is used for finding fiber faults.

Visible Laser Source is used for finding fiber faults.

Gao tek Inc.
Toronto M1B 2K4  Canada
May 13, 2008 Suitable for SM/MM types of fiber, Model GAO811 handheld visible red laser source can distinguish faults of fiber jumper, jumper board, distribution, frame, and tie-in. It also helps overcome limitation of near blind area of OTDR. Laser cannot only be reflected out from macro bend point, overlay layer, or naked fiber position, but can also be jetted from tie-in which is not linked well. Unit offers greater than 1 mW output power, low voltage warning, and automatic power off.

High-Frequency Ground Current Reducer has MSHA approval.

Zero Ground
Woodridge, IL 60517-1438
May 06, 2008 Engineered for use where AC induction motors operate in conjunction with VFD applications, ZERO-GROUND® High Frequency Extraction System is approved by US Department of Labor, Mining, and Safety Health Administration (MSHA) for use in underground and surface mines. Completely passive system utilizes no filters or brushes and eliminates electrical noise while directing high-frequency ground currents away from hazardous locations and sensitive equipment.

Processing Monitor detects presence of static electricity.

Processing Monitor detects presence of static electricity.

Newson Gale, Inc.
Lakewood, NJ 08701
Apr 15, 2008 Earth-Rite® TELLUS(TM) monitors processing operations involving handling, transporting, or mixing of flammable or explosive products. Operating in real-time, it confirms that positive connection to ground exists and remains below 5 W, with green LED to provide indication. System is based on PSU/I.S. controller mounted in safe area as much as 350 ft from hazardous area. It is powered by 110 or 240 Vac and compliant with NFPA 77 and CENELEC 50404 guidelines.

Hall-Effect Current Sensor has high-speed/low-noise design.

Hall-Effect Current Sensor has high-speed/low-noise design.

Allegro MicroSystems Inc.
Worcester, MA 01615
Apr 14, 2008 Featuring 125 KHz bandwidth capability, ACS756 open-loop Current Sensor takes advantage of low-loss leadframe of CA package and accelerated response capability of integrated core. Internal electrostatic shield shunts effects of voltage transient spikes around silicon and minimizes voltage ripple on output. While suited for various 50-100 A applications, specific areas of use include motor and inverter control as well as power supply control and protection.

Hall-Effect Sensor offers 125 Hz PWM output.

Allegro MicroSystems Inc.
Worcester, MA 01615
Mar 20, 2008 Targeting automotive and industrial markets in current and position sensing applications, Model A1351 converts analog signal from its internal Hall sensor element to digitally encoded PWM output signal. Integrated BiCMOS monolithic circuit includes Hall element, precision temperature-compensating circuitry to reduce intrinsic sensitivity and offset drift of Hall element, small-signal high-gain amplifier, dynamic offset cancellation circuits, and PWM conversion circuitry.

Low-Noise Current Sensors feature 2,100 Vrms isolation.

Low-Noise Current Sensors feature 2,100 Vrms isolation.

Allegro MicroSystems Inc.
Worcester, MA 01615
Feb 25, 2008 Available in ±5, ±20, or ±30 A versions, with corresponding sensitivity levels of 185, 100, or 66 mV/A, ACS712 bidirectional and ACS713 unidirectional sensors are based on low-noise 0.65 mm BiCMOS process. Integrated shield attenuates high dV/dt voltage transients across leadframe and filter pin can be used to set -3 dB point with capacitor. Total output error is 1.5% at room temperature and +4% in industrial temperature range from -40º to +85ºC.

Six-Channel Supervisor has selectable supply tolerances.

Six-Channel Supervisor has selectable supply tolerances.

Linear Technology Corp.
Milpitas, CA 95035-7417
Feb 22, 2008 Designed for monitoring equipment with numerous supply voltage rails, 6-channel LTC2932 includes separate open-drain voltage comparator outputs. External resistive divider between bandgap reference output, ADC input, and ground determines which channels are set to preset or adjustable voltage monitor inputs. Offered in 20-pin TSSOP package, IC has adjustable reset timeout period as well as reset disable pin for margining applications. All channels feature ±1.5% max threshold accuracy.

High-Side Power Monitor measures current and voltage.

High-Side Power Monitor measures current and voltage.

Linear Technology Corp.
Milpitas, CA 95035-7417
Feb 20, 2008 Offered in MSOP-10 and 3 x 3 mm DFN-10 packages, LTC4151 utilizes internal 12-bit ADC to continuously measure high-side current and input voltage from 7-80 V to give true power reading. Single-chip solution has 2-wire, I²C-compatible interface that reports input power data, which can be delivered continuously or via no-latency single snapshot mode. Third low-voltage input can be used to measure voltage from thermistor/fuse, and max total unadjusted error for measurements is ±1.25%.

Current Transducer utilizes closed-loop technology.

Current Transducer utilizes closed-loop technology.

LEM U.S.A., Inc.
Milwaukee, WI 53224
Feb 14, 2008 Operating from single +5 V supply, Model LTSP measures positive and negative ac, dc, and pulse currents on PCBs and provides current output, which allows user to manage accuracy level and thermal drift by selecting output resistance. Unit offers access to internal reference on separate external pin for use with microcontrollers and/or A/D converters. Multi-range configuration is designed for nominal currents of 8, 12, and 25 Arms with galvanic isolation between primary and output circuits.




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