Current Loops
See Also: Loop, HIL, Loop Testers
-
Product
2-Port Serial Interface
APCI-7420-3
-
*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
-
Product
Industrial 4-20mA DAC Solution
-
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.
-
Product
4 High-Voltage/High-Current (External VCC) D/A Outputs
DA5
-
Digital-to-Analog (D/A) module DA5 provides 4 independent D/A output channels (half-bridge) utilizing a single external supplied power source with full-scale operating range of 0-65 VDC (V-control mode) and 0-2 A (I-control mode). Alternatively, two channels can be paired (full-bridge) to achieve a full-scale operating range of ±65 V and ±2 A from a single external supplied power source. Linearity/accuracy is ±1% FS range over temperature. The DA5 provides either voltage or current control loop modes, which are programmable for the application.
-
Product
PCI 8 Form C Relay Output / 8 Isolated Input Digital Interface
8011
-
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.
-
Product
12 D/A Outputs (±10 VDC or ±25 mA)
DA1
-
The DA1 module features 12 independent D/A output channels with a full-scale range of ±10 VDC at ± 25 mA (max). The DA1 provides either voltage or current control loop modes that are programmable for the particular application. The DA1 module also offers external trigger/synchronization signal (RS422/485) capability, which provides/accepts a trigger signal to/from other module(s).
-
Product
PCI Express 16 Reed Relay Output
8004e
-
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.
-
Product
Digital Electrical Network Analyzer
1826 NA
-
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. No need to add all the bonding points and connection paths resistances.● Displays voltage supply at the transformer (Line to Neutral), without loading the transformer. Displays voltage between Line (Phase) and Earth (Ground), without drawing any current.● Measures the impedance of the line itself so you can analyze and differentiate between the multiples paths of the wiring.● Measures the Neutral Impedance. Single one smart push button operation; ON, Test, Scroll trough results and menus.● Checks wiring integrity (LEDs).● Auto off/auto ranging (software ranging). ● Combined prospective short circuit current, loop, individual wire and Earth Tester.● Voltage test L-N and L-E.● Loop test for L-E and L-N and PSC.● Enables analysis of constituent components in L-E and L-N loops giving resistance of earth, neutral wire, live wire and transformer winding.● Display can be customized for large orders.
-
Product
4-port Serial Interface, Modular, With/without Optical Isolation, 3.3V/5V, With 9-pin Connectors
APCI-7500-3/4C
-
*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)
-
Product
PCI Express 8 Reed Relay Output
8012eS
-
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.
-
Product
4-Port Serial Interface, Modular, With/Without Optical Isolation, 3.3V
CPCI-7500
-
*This Model has a 37-pin D-Sub male connector*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)*Transmission mode asynchronous, full, half duplex*Transfer rate: progr. up to 115.2 kBaud up to 1 MBaud on request*Protocol: 5, 6, 7 or 8-bit character 1, 1? or 2 stop bits*Parity: even, odd, none, mark or space*Interrupt lines: automatic through BIOS
-
Product
PCI Express 16 Reed Relay Output
8004He
-
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.
-
Product
- RS-232 to Current Loop Converter
Model 65A
-
FEATURES: Active/Passive Loops; 20 or 60 mA. Operation; DC To 19.2 KBPS; Half/Full Duplex; Optically Isolated; DTE/DCE Selectable. The Model 65A is a small, versatile, RS-232 to Current Loop Converters for use with teletypes or computers providing local terminal input via a 20mA. (or 60 ma.) current loop. The Model 65 includes a wall mounted transformer and internal power supply circuitry.
-
Product
DC current Sensors
CTH
-
The CTH sensors convert dc current to an isolated voltage output, the CTHR sensors convert ac current to a dc output signal proportional to the Arms. All popular process control voltage and current loop outputs are available. Through hole or split core options mean that connection is non-intrusive and straightforward. The available input range of the CTH sensors is any value from 5A to 6000Adc.
-
Product
PXI Analog Output/Current Loop Simulator Module - 16 Channel
41-765-001
Analog Output Module
The 41/43-765-001 is a PXI/PXIe 16-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.
-
Product
Current Loop 20 MA Constant Current SI-module With Optical Isolation
MXTTY
-
Current loop 20 mA constant current (active, passive) SI-module with optical isolation.
-
Product
Measurement & Simulation
-
Highland Technology offers a wide array of tools for measurement, simulation, and control. Tachometers, thermocouples, RTDs, precision voltages, current loops, strain gauges, and more can be measured or simulated by Highland's products.
-
Product
Current Loop Adapter
OP-1C
-
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.
-
Product
Current Loop Supply Isolating Transmitter
Model TWS / TWS 2
-
Kusam Electrical Industries Limited
• Aux. Power AC 85 ~ 265V or DC 85 ~ 300V• High Accuracy 0.1% RO at 23 °C ± 5 °C• Output User Selectable• PC Plastic Case, DIN Rail or Wall Mounting• High Dielectric Strength (AC 1.5KV/Min, between Input / Output / Power)
-
Product
Intelligent Transmitter with Digital Indication
LEO 3
-
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:
-
Product
Current Loop Data Loggers
-
This data logger can measure and store 4~20mA DC current readings automatically. The professional applications can be provided by the PC software DGraphTM. Logger status, alarm indication and low battery indication are via flashing red/green LED and yellow LED. The button on housing can be used to start logging, or confirm and clear LED alarm when LED alarm is hold status.
-
Product
Calibrator Process
VA70034
-
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.
-
Product
Signal Isolators & Converters
-
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.
-
Product
Loop Meter
MZC-310S
-
The MZC-310S is a professional portable meter for testing electrical installations with over-current circuit breakers. The instrument measures short-circuit L-PE, L-N and L-L loop and prospective short-circuit loop current. A measurements can be done either with low testing current (up to 42A) with 2-pole method or high testing current (up to 280A) with 4-pole method that enables measurements with very high accuracy and resolution.
-
Product
PC Based High Current Test Set for Circuit Breakers and Temperature Rise Test Equipment
-
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.
-
Product
Remote Indicators
-
ABB field indicators provide a convenient way to access the field instruments data when they are located in remote or difficult to access areas. Powered directly from the 4-20 mA current loop, they require minimal effort to setup.
-
Product
H/L Voltage Clamp Meters
-
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.
-
Product
4-20mA Current Loop D/A Converters
-
ADI integrated solutions combine both the D/A converter and driver in one chip to provide the required output directly from the digital domain. Analog Devices’ portfolio of leading industrial D/A converters and drivers provides a range of programmable output ranges from standard 4 mA to 20 mA for current loop communication to ±10 V for actuator control. ADI industrial converters offer considerable control functionality and advanced on-chip diagnostics to maximize system uptime, as well as eliminate the need for costly calibration routines needed by some traditional discrete architectures.
-
Product
PXI Analog Output/Current Loop Simulator Module - 8 Channel
41-765-003
Analog Output Module
The 41/43-765-003 is an 8-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.
-
Product
Loop Meters
-
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.
-
Product
Opto-Isolated Current Loop Signal
4029
-
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.
