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These high-performance and low-price multimeter series consist of three models: the 6½-digit DMM 7461A, the 6½-digit DMM with temperature measurement 7461P and the 5½-digit DMM 7451A.
These multimeters realize high-speed sampling performance with selective sampling modes by adopting the newly developed A/D converter, supporting a variety of applications including digitization of pulse signals, logging measurement at certain intervals.
As another feature, the integration time can be set to any values. This enables correctly measuring the average values of pulsed current/voltage.
In addition, the 7461P is capable of temperature measurement with a resolution of
0.001 ℃ using a PT sensor.
Furthermore, these multimeters are provided with two channel DC voltage measurement (Bch 10 V range fixed), so that low cost measurement system architecture is available.
The DMM series is available in three models: the 7451A with 51/2 digits, the 7461A with 61/2 digits, and the 7461P, which can measure temperature with platinum temperature resistors in a 61/2-digit display. All of them offer optimal high-speed sampling, abundant data memory capacity, and an enhanced external control signal for system construction, so you can choose the one that best suits your application.
| 7451A | 7461A | 7461P | |||
| Maximum display | 319 999 | 1 199 999 | |||
| Measurement speed (times per second) | 5,000 max | 20,000 max | |||
| Variable integrals | 〇 | 〇 | |||
| DC voltage measurement | 1 μV～1000 V | 100 nV～1000 V | |||
| Certainity (representative value) | 0.01 %/year | 0.0035 %/year | |||
| DIRECT current measurement | 10 nA～3 A | 1 nA～3 A | |||
| Resistance measurement | 100 μΩ～300 MΩ | 100 μΩ～100 MΩ | |||
| ALTERNATING Voltage Measurement (True RMS) | 1 μV～700 V | 100 nV～700 V | |||
| ALTERNATING VOLTAGE Frequency range | 20 Hz～300 kHz | 20 Hz～300 kHz | |||
| ALTERNATING CURRENT MEASUREMENT (True RMS) | 10 nA～3 A | 1 nA～3 A | |||
| Computing functions | 〇 | 〇 | |||
| Temperature measurement | × | × | Pt100（−200 ℃～ ＋850 ℃）/JPt100 | ||
| Data memory | 10,000 | 10,000 | 20,000 | ||
| interface | USB、GPIB | ||||
| price | ¥130,000 (tax included ¥143,000) | ¥138,000 (tax included ¥151,800) | ¥175,000 (tax included ¥192,500) | ||
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