Current Loops
See Also: Loop, HIL, Loop Testers
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Product
Single Port Serial Interface
APCI-7300-3
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*PCI interface to the 32-bit data bus. *Asynchronous communication adapter, 1-port serial interface*1 socket for SI modules*Modular structure through SI modules*Configurable as: RS232, RS422, RS485, with or without isolation, or 20 mA Current Loop (active, passive) with isolation*Addressing through software
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Product
Loop-Powered Transmitters and Drivers
4-20mA
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Loop-Powered Transmitters convert the output from proximity probes, seismic sensors, into a 4-20mA DC current, which is proportional to the input being measured. The transmitter converts the displacement or vibration signal to DC voltage and/or current for a DCS or PLC system. They control a 4-20mA current loop for a specified vibration range (ex. 0-5 mils peak-to-peak). The transmitters have a two-wire hook-up, powered solely by the loop current and have a power supply range of 15 to 36 volts.
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Product
16-Channel DAC Function Card
ProDAQ 3510
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The ProDAQ 3510 DAC function card is a ProDAQ high-density card that fits into ProDAQ VXIbus motherboards and LXI function card carriers. This high-density card contains 16 independent, 16-bit DAC channels, and each channel is equipped with its own DAC. The ProDAQ 3510 DAC function card is specially designed for DC, low-frequency, and current loop applications.
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Product
PC Based High Current Test Set for Circuit Breakers and Temperature Rise Test Equipment
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This equipment comprises of high current source for testing of circuit breakers with additional facility for temperature rise testing (thus incorporating testing for moulded case, vacuum & air circuit breakers as per IEC 60947-2). The system integrates a servo controlled source with closed loop current feedback to maintain the current constant. It has the necessary instrumentation for maintaining current at full load & other conditions arising in testing at high current. The bench has a PC based control system with temperature data logger (24 channel with ch-ch isolation amplifiers). The data logger displays as well as stores a set of temperature values with time.
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Product
PCI Express 16 Reed Relay Output
8004He
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The 8004He PCI Express digital I/O interface provides 16 optically isolated inputs and 16 Reed relay outputs. The isolated inputs protect the PC and other sensitive equipment from the voltage spikes and ground loop currents that are common to industrial environments. The outputs provide high quality, long-life, dry contact switch closures suitable for low-current applications.
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Product
Rechargeable Multifunction Tester
ET4000
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The new ET4000 tester carries out all the tests needed to verify the safety of electrical installations in domestic, commercial and industrial wiring installations in accordance with the latest regulations.
Everything about the new ET Series has been designed to save time and make testing easier.
Fast, reliable high current and non-trip loop testing comes as standard together with a high level of input protection and a CAT IV safety rating .
Supplied with a full range of accessories.
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Product
Current Loop Adapter
OP-1C
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This adapter supports current loop communications.The kit incorporates a communications circuit with photo-coupler isolation and constant-current power supply of insulated type, thus realizing not only monitoring but also easy communications testing with passive or active current loop devices.
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Product
PCI Express 16 Reed Relay Output
8004e
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The 8004e PCI Express digital I/O interface provides 16 optically isolated inputs and 16 Reed relay outputs. The isolated inputs protect the PC and other sensitive equipment from the voltage spikes and ground loop currents that are common to industrial environments. The outputs provide high quality, long-life, dry contact switch closures suitable for low-current applications.
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Product
Signal Isolators & Converters
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Devar current loop signal isolators reduce problems found in field measurements when signal transmitters or converters encounter both input and output signals that may be grounded. Current loop isolators eliminate these ground loops and are available as input loop powered or output loop powered instrumentation.
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Product
Industrial 4-20mA DAC Solution
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Analog Devices portfolio of leading industrial digital-to-analog converters address the challenges of enhancing system accuracy, reliability, and overall functionality while reducing form factor and power dissipation. The products provide a range of programmable output ranges from standard 4–20 mA for current loop communication to ±10 V for actuator control. They simplify industrial system design by offering considerable control functionality and advanced on-chip diagnostics to maximize system up time. ADI industrial converters also eliminate the need for costly calibration routines needed by some traditional discrete architectures.
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Product
PCI 8 Form C Relay Output / 8 Isolated Input Digital Interface
8011
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The 8011 digital I/O interface provides 8 optically isolated inputs and 8 Form C relay outputs. The inputs protect the PC and other sensitive equipment from spikes and ground loop current that can be generated in industrial environments, while the outputs provide higher current capabilities (up to 2A) and are optimized for 24V operation.
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Product
Intelligent Transmitter with Digital Indication
LEO 3
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KELLER AG für Druckmesstechnik
LEO 3 is a micro-processor based transmitter with digital double-display for pressure (top display) and for the output signal (bottom display). The display is powered from the 4...20 mA current loop. Functions:
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Product
PCI Express 8 Reed Relay Output
8012eS
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The 8012eS PCI Express digital interface provides eight optically isolated inputs and eight Reed relay outputs (SPST). The isolated inputs are non-polarized and rated for 3-30 VDC. Optical isolation protects the PC and other sensitive equipment from the voltage spikes and ground loop currents that are common to industrial environments.
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Product
H/L Voltage Clamp Meters
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High Voltage Current Transformation Ratio Tester breaks traditional structure, specially designed for high and low voltage first and secondary loop current, variable ratio, and current leakage test; apply the latest CT technology and mask digital integration technology, composed of special high-voltage clamp, low voltage clamp, host, high voltage insulation rod and monitoring software, etc; its wireless transmission test data can penetrate multiple building obstacles with a straight-line distance of 30 meters.
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Product
Opto-Isolated Current Loop Signal
4029
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SPECTEC Innovative Sensor Solutions
SPECTEC's Model 4029 digital opto-isolated current loop signal conditioner prevents ground loops and interrupts any galvanic signals riding on magnetic speed sensor's output signal.. This signal conditioner converts magnetic, variable reluctance and inductive sensors' sinusoidal signals into a 4-20 mA output suitable for interfacing with process control units, dataloggers, flow controllers, and computers.
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Product
PXI Analog Output/Current Loop Simulator Module - 12 Channel
41-765-002
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The 41/43-765-002 is a 12-channel Analog Output Module designed to meet the requirements of industrial control applications utilizing current loops 4 – 20mA. It consists of up to four 16-bit, digital-to-analogue converters (DAC), capable of creating four current outputs each. Output current within 0mA - 4mA and 20mA - 24mA, give the ability to simulate error or extra signaling conditions. The ±24mA mode gives the ability to simulate either sourcing or sinking sensor.
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Product
2-Port Serial Interface
APCI-7420-3
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*RS232, RS422, RS485, 20 mA Current Loop (active, passive) with or without optical isolation*Modular structure through MX-modules*With or without optical isolation*Mode configuration free for each port*128-byte FIFO-buffer common interrupt*Automatic direction recognition for RS485*Transmission mode: asynchronous, full, half duplex
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Product
Calibrator Process
VA70034
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Shanghai Yi Hua V&A Instrument Co., Ltd. CO.,LTD
Loop calibrator This Calibrator is use to measure or output 0 to 24 mA DC current loop, and 0 to 20 V DC voltage.
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Product
Loop Meters
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The CM-1TB + XL-1 are modern digital current loop-powered meters that convert standard loop current to engineering units. They feature high accuracy and a large 0.6-inch LCD display. Proven reliability combined with low cost has earned these meters world-wide acceptance, with thousands in use.
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Product
PCI Express 8 Reed Relay Output
8012e
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The 8012e Low Profile PCI Express digital interface provides eight optically isolated inputs and eight Reed relay outputs (SPST). The isolated inputs are non-polarized and rated for 3-30 VDC. Optical isolation protects the PC and other sensitive equipment from the voltage spikes and ground loop currents that are common to industrial environments.
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Product
Digital LOOP/PSC/EARTH Tester
1824 LP
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Standard Electric Works Co., Ltd
● Microprocessor-controlled.● Measures Earth Resistance without the need for poles in the ground or external measuring wires.● Earth measurement uses the real earth current path and the current generated by the electric network, without the need for any disconnection.● The Earth Resistance displayed is exactly the earth resistance that the earth current will need to go through if an earth fault occurs. (you do not need to add all the bonding points and connection paths)● Displays voltage supply at the transformer(Line to Neutral), without loading the transformer.● Single one smart push button operation; ON, Scroll through results and menus.● Checks wiring integrity (LEDs).● Auto-off / Auto-ranging (software range).● Color-coded test leads.● Combined prospective short circuit current, loop, and earth tester.● Loop test for L-E and PSC between L-N.● Voltage test L-N.● Display can be customized for large orders.
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Product
Microwave Moisture Meter
RX-95
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The system works based on the absorption of microwave energy by water molecules contained inthe x-rayed material. It is a non-contact, non-destructive method of instant measurement of water content - used for materials such as coal, flour, grain, cement, seeds, sugar, etc. Thanks to high measurement sensitivity (resolution greater than 0.01% of water content by weight), short measurement time (about 5 times/sec.) and repeatability of measurement - the system is suitable for continuous measurement of material moisture, e.g. on conveyor belts and its recording on a PC or using a 4-20 mA current loop.
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Product
Current Loop 20 MA Constant Current SI-module With Optical Isolation
MXTTY
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Current loop 20 mA constant current (active, passive) SI-module with optical isolation.
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Product
4-Port Serial Interface
APCI-7500-3
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This Model has a 37-pin D-Sub male connectorRS232, RS422, RS485, 20 mA Current LoopModular structure through SI modulesWith or without optical isolationMode configuration free for each port128-byte FIFO-buffer, common interruptTransfer rate programmable up to 115,200 BaudOption: up to 1 MBaud for RS485 and RS422Automatic direction recognition for RS48Mode: configurable RS232, RS422, RS485, 20 mA Current Loop (active, passive) with or without isolation (SI modules)Transmission mode asynchronous, full, half duplexTransfer rate: progr. up to 115.2 kBaud up to 1 MBaud on requestProtocol: 5, 6, 7 or 8-bit character 1, 1? or 2 stop bitsParity: even, odd, none, mark or spaceInterrupt lines: automatic through BIOS
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Product
AC Power Sources, Frequency Converter
MAC-01, -02, -03
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For reliability, all models of the Titan AC Power Sources/Frequency Converters are fully current limit protected against either continuous or transient short circuit or overload conditions. When an overcurrent condition exists, the internal current control loop overrides the voltage control loop and scales back the sinewave drive until it sees a safe output current level.
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Product
PXI/PXIe Analog Output/Current Loop Simulator Module - 12 Channel
43-765-002
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The 41/43-765-002 is a 12-channel Analog Output Module designed to meet the requirements of industrial control applications utilising current loops 4 – 20mA. It consists of up to four 16-bit, digital-to-analogue converters (DAC), capable of creating four current outputs each. Output current within 0mA - 4mA and 20mA - 24mA, give the ability to simulate error or extra signalling conditions. The ±24mA mode gives the ability to simulate either sourcing or sinking sensor.
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Product
Multifunction Installation Testers
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Shanghai Beha Electronics Co., Ltd.
Loop impedance and prospective short circuit current measurement• Line impedance and prospective short circuit current measurement• Earth loop resistance in TT-systems• Rotary field test• RCD measurements (contact voltage, trip time, trip current - ramp method)• RCD analysis for test of all RCD parameters • Low Ohm and continuity measurement • Insulation measurement up to 1000V (suitable for 690 V industrial mains systems)• Earth resistance measurement with probes and clamp adapters• Voltage and frequency measurement • Current measurement with clamp adapters(optional)• Power and energy measurements• Harmonics measurement for voltage and current upto the 21st harmonics
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Product
4-port Serial Interface, Modular, With/without Optical Isolation, 3.3V/5V, With 9-pin Connectors
APCI-7500-3/4C
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*This model has 4x 9-pin D-Sub male connectors on 2 brackets*RS232, RS422, RS485, 20 mA Current Loop*Modular structure through SI modules*With or without optical isolation*Mode configuration free for each port*128-byte FIFO-buffer, common interrupt*Transfer rate programmable up to 115,200 Baud*Option: up to 1 MBaud for RS485 and RS422*Automatic direction recognition for RS48*Mode: configurable RS232, RS422, RS485, 20 mA Current Loop (active, passive) with or without isolation (SI modules)
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Product
Digital LOOP/PSC/LOAD Tester
1825 LP
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Standard Electric Works Co., Ltd
● Microprocessor-controlled.● Measures the voltage drop as if 16A was flowing between Line and Neutral.● Displays voltage without current (V at 0A).● Display voltage as if 16A flowing between Line and Neutral (V at 16A).● Loop test for L-E● PSC between L-N.● Single one smart push button operation; ON, Scroll through results and menus.● Checks wiring integrity (LEDs).● Auto off/auto ranging (software range).● Combined prospective short circuit current, loop and load tester.● Display can be customized for large orders.
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Product
PXI Analog Output/Current Loop Simulator Module - 4 Channel
41-765-004
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The 41/43-765-004 is an 4-channel Analog Output Module designed to meet the requirements of industrial control applications utilizing current loops 4 – 20mA. It consists of up to four 16-bit, digital-to-analogue converters (DAC), capable of creating four current outputs each. Output current within 0mA - 4mA and 20mA - 24mA, give the ability to simulate error or extra signaling conditions. The ±24mA mode gives the ability to simulate either sourcing or sinking sensor.
