Loop
See Also: Current Loops, HIL, Loop Testers
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Pressure Calibrator
HPC40
AMETEK Sensors, Test & Calibration
The HPC40 Series handheld pressure calibrator is the world's first combined pressure and mA loop calibrator to be fully temperature compensated from -20 to 50°C. You can count on the same accuracy whether measuring pressure, current, voltage, or temperature.
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High Performance High Power DC Electronic Load
IT8900 Series
IT8900 series of high performance high power dc electronic loads provide three voltage ranges 150V/600V/1200V. The power expands to 600kW by master-slave paralleling, and maintains stand-alone functions. 50kHz high speed measurement, six working modes, transient over-power loading capability, CV loop speed adjustment, Measurement function, 25kHz dynamic test and other multiple accurate testing functions make IT8900 series well-suited for types of high power applications.
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Voltage Controlled Crystal Oscillators
VCXOS
Voltage Controlled Crystal Oscillators (VCXOs) are used for fine adjustment of the operating frequency and are normally used in conjunction with a phase locked loop.
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PXI-8512, 1‑Port, High-Speed, Flexible Data Rate PXI CAN Interface Module
780687-01
1‑Port, High-Speed, Flexible Data Rate PXI CAN Interface Module—The PXI‑8512 is a high-speed Controller Area Network (CAN) Flexible Data-rate (FD) interface for developing applications with the NI‑XNET driver. The PXI‑8512 excels in applications requiring real-time, high-speed manipulation of hundreds of CAN frames and signals, such as hardware‑in‑the‑loop simulation, rapid control prototyping, bus monitoring, automation control, and more. The NI‑XNET device-driven DMA engine enables the onboard processor to move CAN frames and signals between the interface and the user program without CPU interrupts, minimize message latency and freeing host processor time for processing complex models and applications.
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AC Hysteresis Graph Test System
DX-2012SA
Under continuous frequency of 1 kHz to 500 kHz, automatic measurement of magnetic hysteresis loop of the soft magnetic materials such as silicon steel, precision alloy, non-crystal and ferrite, accurate measurement on the dynamic magnetic characteristic parameters such as amplitude permeability µa, loss angle d, loss iron Pc, remanence Br and coercivity Hc.
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Ground Fault Finder
FST-JD200 DC
Foresight Electronics Co., Ltd.
FST-JD200 not only can provide a solution on accurately testing the faults of the indirect-grounding of the direct current system, non-metal grounding, loop grounding, simultaneous grounding of the anode and cathode, balanced grounding of the anode and cathode and multi-point grounding 1. The high-precision sampling clamp meter The device uses a high resolution (0.1mA) signal sampling direct current clamp meter that can achieve multi-point grounding and high resistance ground point positioning...
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4-20mA Current Loop USB Data Logger
EL-USB-4
This data logger measures and stores up to 32,000 current loop readings over flashing red and green LEDs. The data logger features a pair of screw terminals and is supplied complete with a a 4-20mA d.c. measurement range. The user can easily set up the logging rate and start time, and download the stored data by plugging the module straight into a PCs USB port and running the purpose designed software under Windows 2000, XP or Vista
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High Current Short Circuit Loop Impedance Meter
AMZC-310S
Measurement of very small short-circuit loop impedances (with resolution of 0,1mΩ) using the current of 150A under 230V, maximum 280A under 440V, or measurement using the current of 23A under 230V, maximum 42A under 440V
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Hall Effect Sensors
A new range of sensors based on closed loop hall effect technology, for measuring and monitoring of e.g. secondary transformer overload or shortcircuit detection, DC link from ground fault and overload, motor overload.
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Single Loop Controller
1460
he 1460 has been designed to provide immediate visibility to the operator. At a glance, the programmable displays will show you the measured variable, the set point and the parameter being edited, the number of cycles or time remaining, the recipe name and number and also whether the cycle is in a ramp or soak mode
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Doppler Radar Target Simulators
Automotive radar sensors play a vital role in the current development of autonomous driving. Their ability to detect objects even under adverse conditions makes them indispensable for environment-sensing tasks in autonomous vehicles. As their functional operation must be validated in-place, a fully integrated test system is required. Radar Target Simulators (RTS) are capable of executing end-of-line, over-the-air validation tests by looping back a received and afterward modified radar signal and have been incorporated into existing Vehicle-in-the-Loop (ViL) test beds before. However, the currently available ViL test beds and the RTS systems that they consist of lack the ability to generate authentic radar echoes with respect to their complexity. The paper at hand reviews the current development stage of the research as well as commercial ViL and RTS systems. Furthermore, the concept and implementation of a new test setup for the rapid prototyping and validation of ADAS functions is presented. This represents the first-ever integrated radar validation test system to comprise multiple angle-resolved radar target channels, each capable of generating multiple radar echoes. A measurement campaign that supports this claim has been conducted.
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Solid State Voltage Injector
J2110A
While it is possible to obtain high quality injection transformers with bandwidths as wide as 1Hz to 5MHz or more, in some cases this is still insufficient for some tests. For example a typical heater control loop might have a bandwidth of less than 1Hz while some linear regulators and opamp circuits can have bandwidths of up to 100MHz or in some cases even higher. For these applications, a solid state injector can provide the necessary bandwidth. A solid state injector can perform at DC, while the upper frequency limit is dictated by the components selected and the printed circuit board material and layout. It is possible to obtain a solid state injector with a working range of DC – 200MHz, though above 50MHz the interconnection between the injector and the circuit being tested can become quite critical. It is essential that ripple from the injector power supply does not dramatically degrade the dynamic range or the signal to noise ratio of the measurement. The resulting plots are often much cleaner when using a solid state injector than with a transformer injector.
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6000 Series Digital I/O Modules
Series 6000 digital I/O modules record signals from frequency counters, flow meters, encoders, discrete transducers, IRIG time, etc. which are often part of the test environment. These digital signals are time aligned and recorded alongside the system’s analog measurements. High density digital inputs provide an opportunity to easily include facility controls like switches, valve positions, relays, lights, etc. along with the test data. Series 6000 digital I/O modules also provide outputs generated by user command or automatically by Sequence, Alarms or DSP. User generated outputs are accomplished in software while sequencers can be programmed prior to a test and initiated by program or hardware control. Alarm conditions preprogrammed on the analog side can automatically generate digital outputs which are typically connected to facility control systems or PLCs. A DSP adds powerful real-time processing and is appropriate for PID control loops, derived parameter calculations and a variety of other real-time operations.
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Phase Locked Loop (PLL) Synthesizer & Translation Loop
ADI’s industry leading phase locked loop (PLL) synthesizer family features a variety of high performance, low jitter clock generation and distribution devices. The extensive, ever growing family includes over 100 products, optimized for high data rate, low jitter clocking applications. The portfolio features PLLs, PLL/VCOs, and distribution chips, designed for clocking applications where synchronization, clock distribution, and phase noise performance are all vitally important.
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VECTOR-GUN HANDHELD DIRECTION FINDING ANTENNA SYSTEM
HFDF
National RF's Type HFDF active directional antenna system consists of a high gain RF amplifier coupled to a tunable Faraday shielded loop antenna. Several loop antenna assemblies are available to provide coverage of frequencies in the HF and low VHF spectrum. Due to the nature of a Faraday shielded loop, the antenna exhibits a sharp null through the diametric center of the loop. This null is used to determine the direction of incoming radio signals or to locate electrical noise being radiated from some source. The internal high gain amplifier is used to compensate for the inherent inefficiency of the actual loop at the operating frequency. Overall, the system dynamic response is about +6 dB as compared to the dynamic response of a dipole. To aid in the direction finding process on strong signals, an internal 30 DB attenuator is provided. As the loop antenna presents a bi-directional response, tri-angulation may be required to eliminate the ambiguous signal direction. The line of site of the incoming signal is determined by listening for a signal null on the receiver or by watching the receiver’s S-meter.
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300 HP Complete Bench Hydraulic Test Center
HTC-300
The Hydraulic Test Center (HTC) is a versatile machine designed to test heavy-duty, off-highway hydraulic components. The 300 hp (224 kW) HTC Complete Bench is for the dealer that services components from a predominately medium size machine mix such as large construction equipment (loaders, dozers, excavators). The Complete Bench offers full functionality to test all types of pumps and motors including: transmissions, hydraulic motors, hydraulic cylinders, valve blocks, torque converters, open and closed loop pumps.
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PXIe-7856, Kintex-7 160T FPGA, 1 MS/s PXI Multifunction Reconfigurable I/O Module
784145-01
Kintex-7 160T FPGA, 1 MS/s PXI Multifunction Reconfigurable I/O Module—The PXIe‑7856 features a user-programmable FPGA for high-performance onboard processing and direct control over I/O signals to ensure complete flexibility of system timing and synchronization. You can customize these devices with the LabVIEW FPGA Module to develop applications requiring precise timing and control such as hardware‑in‑the‑loop testing, custom protocol communication, sensor simulation, and high-speed control. The PXIe‑7856 features a dedicated A/D converter (ADC) per channel for independent timing and triggering. This design offers specialized functionality such as multirate sampling and individual channel triggering, which are outside the capabilities of typical data acquisition hardware. The PXIe‑7856 also includes peer‑to‑peer streaming for direct data transfer to other PXI Express modules.
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PXI-2510, 68-Channel, 2 A PXI Signal Insertion Switch Module
778572-10
68-Channel, 2 A PXI Signal Insertion Switch Module—The PXI‑2510 fault insertion unit (FIU) is designed for hardware‑in‑the‑loop (HIL) applications and electronic reliability tests. Each module has a set of feedthrough channels that you can open or short to one or more fault buses. You can use this architecture to simulate open or interrupted connections as well as shorts between pins, shorts to battery voltages, and shorts to ground on a per-channel basis. When controlled with the LabVIEW Real-Time Module, the PXI‑2510 is ideal for validating the integrity of control systems including engine control units (ECUs) and full authority digital engine controls
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Loop / PFC Testers
PeakTech Prüf- und Messtechnik GmbH
The PeakTech 2715 is a loop tester which is used to test the safety of electrical systems. These device measures the impedance of the short-circuit loop between the outer conductors of a circuit, whereby the probable short-circuit current is calculated. The protection of the circuit (miniature circuit breaker) must therefore trigger at a lower current than the expected short-circuit current, in order to avoid excessive heating of the lines and thus a fire risk. The PeakTech 2715 is due to its function and its robust design almost indispensable when performing new installations, but also for general checking of electrical systems, this device is the ideal companion.
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Installation Safety Testers
VDE 0100
PeakTech Prüf- und Messtechnik GmbH
This innovative combination measuring device for testing electrical installations according to official laws convinces with its technical performance data in the high-end area. All important safety tests such as FI, voltage, loop, low-resistance, earth resistance and insulation tests for e-checks and new installations can be carried out safely by the electrician via the large 3.5“ TFT color display. Of course, the device comes with an extensive range of accessories, such as all necessary test leads, adapters, rods and the required software CD for the PC. The device can be charged with a power adapter or via a car adapter. During the daily use, this high-quality device is protected against dust and all-round water jets by its protection class IP 65.
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Load Cell Transmitter
MODEL SST-HV
The SST-HV is a Plug & Play Smart TEDS IEEE 1451.4 compliant Transmitter. Just plug in a TEDS compatible Load Cell or Torque Sensor and the SST-HV will automatically self-calibrate. When used with a non-TEDS Load Cell or Torque Sensor, the SST-LV Transmitter is easily programmed using a PC with an RS232 port and Instrument Setup (IS) software, which provides a graphical user interface. The SST-HV may be powered from 95-240 Vac ±10%. The SST-HV has an Isolated transducer excitation output that is selectable between 5Vdc or 10Vdc. There are Dual solid state relays and an Isolated 4-20 mA, 0-20 mA or 0-10V analog output. There are three Isolated serial data transmitter output ( RS232 , Half-duplex RS485, full-duplex RS485 ) and three serial protocols that are software selectable (Modbus RTU, Modbus ASCII and Custom ASCII). Isolation to 250V rms is provided for power, signal input, analog output, relay outputs, and communications. Isolation adds safety and avoids possible ground loops. The transducer excitation output is isolated to 50V from signal ground.
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Multi-function Tester
MFT5010
It can be used to test insulation resistance, continuity, loop impedance and RCCB, earth resistance tester, five major test requirement in the electrical testing industry. Phase indicator. Can check a wide range of 3-Phase Power source from 110V to 600V
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100base-T1 Ethernet (BroadR-Reach®) Logging Expansion With Low Latency
PT-15B
The PT-15B expands the PM-200 data logger from the Power Family by adding twelve 100base-T1 interfaces. Ethernet traffic is looped through the device with constantly low latency irrespective of the frame length. This means that the time synchronization protocols of the logged Ethernet interfaces are not affected. 100base-T1 packets are time stamped, filtered and sent to the PM-200 data logger via a 1000base-T interface.
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PCIe-7852, Virtex-5 LX50 FPGA, 750 kS/s Multifunction Reconfigurable I/O Device
781103-01
Virtex-5 LX50 FPGA, 750 kS/s Multifunction Reconfigurable I/O Device - The PCIe‑7852 features a user-programmable FPGA for high performance onboard processing and direct control over I/O signals for complete flexibility of system timing and synchronization. You can customize these devices with the LabVIEW FPGA Module to develop applications requiring precise timing and control such as hardware‑in‑the‑loop testing, custom protocol communication, sensor simulation, and high-speed control. The PCIe‑7852 features a dedicated A/D converter per channel for independent timing and triggering. This design offers specialized functionality such as multirate sampling and individual channel triggering, which are outside the capabilities of typical DAQ hardware.
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Public Switch Telephone Network Tester
295B
The Testphone 295B is a test telephone designed for use on Public Switched Telephone Networks (PSTN). It is designed for use on both Dual-tone Multi-frequency (DTMF - tone dialling) and Loop Disconnect (LD - pulse dialling) lines. Fitted with an integral ADSL filter, the telephone will not cause interference when connected to ADSL/Broadband lines in either `on hook` or `off hook` mode.
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Level AFM
Is a flexible Atomic Force Microscope for scientists. It offers a wide range of modes, sophisticated spectroscopy options and the programming of user defined experiments. Besides standard options found in Anfatec's other AFMs, the level AFM allows to add Anfatec's full range of AFM options, such as KPFM, closed loop operation, automated sample motion, acoustic enclosure, humidity and temperature control ... Each instrument is adapted to the user's specific needs.
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Industrial 4-20mA Driver
Analog Devices portfolio of leading industrial d/a converters and drivers addresses 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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NI-9229, ±60 V, 50 kS/s/ch, 24-Bit, Simultaneous Input, 4-Channel C Series Voltage Module
779785-01
±60 V, 50 kS/s/ch, 24-Bit, Simultaneous Input, 4-Channel C Series Voltage Module - The NI‑9229 performs differential analog input. The NI‑9229 is an effective general-purpose analog module because of its resolution, sample rate, and input range. With channel‑to‑channel isolation, your entire system, including the device under test, is protected from harmful voltage spikes up to the isolation rating. In addition to safety, isolation eliminates measurement errors caused by ground loops because the front end of the module is floating.
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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.
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HART Protocol Stack
softHART
SoftHART is the industry-standard smart HART (Highway Addressable Remote Transducer Protocol) communications stack for industrial automation. HART is a bidirectional protocol and communicates over existing 4-20 mA analog current loops, extending communication capabilities without the inconvenience of installing additional wiring.
