Hộp trở chuẩn có thể lập trình độ chính xác cao IETLAB PRS-300 (0.1 Ω- 20 MΩ; 1 μΩ)

Giao diện sử dụng : bàn số và màn hình kỹ thuật số
Độ chính xác: ±(70 ppm + 1 mΩ) 4 Terminal
Chế độ cài đặt nhỏ nhất : 0.1 Ω
Độ phân giải : 1 μΩ
Dải đo: 0.1 Ω- 20 MΩ
Độ ổn định : ±50 ppm/ năm
Lực điện động nhiệt: < 15 μV
Max. tải: 2 A, 200 V (peak), 0.5 W
Bộ điện trở: lá kim loại và dây quấn chính xác
Các đầu nối: 4 Cột buộc 5 chiều đồng telua mạ vàng, lực điện động thấp được dùng cho các cặp nối LO và HI dành cho dòng điện và cảm biến. Cột buộc GND kết nối với vỏ và với mặt đất  
Công tắc: <1 giây/ lần
Công suất yêu cầu: 90 - 264 Vac , 47 - 63 Hz., 30 Watts Max.
Kích thước: 43 cm W x 8.9 cm H x 33 cm D (17" x 3.5" x 13")
Trọng lượng: mẫu bàn: 4.0 kg (9 lb); mẫu có răng: 4.5 kg (10 lb);
Điều khiển: USB
Lựa chọn điều khiển: IEEE hoặc Ethernet: IEEE 802.3 compliant, Speeds 10 BaseT (10 Mb/s) and 100 BaseT (100 Mb/s), IP Address Static or DHCP, Factory setting static

Chi tiết



The PRS-300 dramatically improves the most important aspects of the older manual resistance decades. It introduces an advanced algorithm to create a easy to use programmable decade resistor with 30% improved accuracy and 1000 times better resolution than traditional laboratory decade boxes and RTD Simulators.

The PRS-300 was designed with the right mix of features for to be efficient for both manual and automated application in both laboratory and production environments. With its wide range the PRS-300 was designed to replace multiple decade boxes and reduce test time.

With its industry leading 5 year warranty all aspects of the PRS-300 focus on reliability, reduced ownership costs and simplicity out of the box.

The simple user interface makes PRS-300 well suited for high accuracy requirements for both manual and automated applications such as RTD simulation, DMM calibration, circuit trimming, and load testing.

PRS-300 Advantages:

Further Improve On Accuracy to <15 ppm
Additionally, if you own an 8.5 digit DMM like Fluke 8508A or the Keysight 3458A, for no additional cost, the PRS-300 can be used as part of the PRS-DMM system which will further improve on the accuracy of the unit to <15 ppm.

Interface and Drivers
Operation is both local using a convenient numeric keypad and up/down arrow keys or remote control with standard USB and optional Ethernet, and IEEE-488 interfaces.

Highest Quality Components
The programmable decade box employs, high-quality gold-plated tellurium-copper five-way binding posts serve to minimize the thermal emf effects, which would produce errors in dc resistance measurements.

RTD Calibration
Built-in tables for PT100 and PT1000 RTDs and direct resistance substitution makes the PRS-300 ideal for for RTD (Resistance Temperature Detector) simulation. User defined tables can also be created for use with other RTDs. The operator can enter temperature directly and the correct resistance will automatically be programmed.

Resistor Carousel
Built-in EIA "preferred value" resistance tables of 1% (E96), 5% (E24), 10% (E12) increments or user specified increment allows the PRS-300 to be used as a resistor carousel.

AC Preformance
The PRS-300 programmable resistance decade box is a precision resistance source with excellent characteristics of stability, temperature coefficient, and power coefficient. The use of low inductance wirewound and Z-foil resistors allows the PRS-300 to be used in ac applications with minimal resistance change from dc below 1 kHz.

No Zero Resistance
The PRS Series programmable resistance decade box employs very low resistance, low thermal emf relays with gold-clad silver-alloy contacts. A special design keeps contact resistance to a minimum. The gold plating keeps the silver contacts from becoming tarnished when unused, or when only low currents are passed through them. This is most often the case when only minute test currents are drawn by digital multimeters and other test instruments. Contact resistance remains low and repeatable through the use of multiple contacts.

USB Driver for Windows 7 and Windows 10
For USB interface:
Download: FTDI.zip

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