TD1470 Single and Double Arm Bridge Calibration Device
TD1470 Single and Double Arm Bridge Calibration Device
Electrical Resistance Standard
The TD1470 is a high-precision DC resistance simulator designed for calibration and verification of measurement instruments requiring wide-range resistance simulation. With its advanced resistance synthesis technology, the TD1470 provides precise, stable, and repeatable outputs across a broad resistance range—from low micro-ohm levels to 100 Ω.
This instrument is suitable for applications such as calibration of single-arm and double-arm bridges, high-accuracy DC resistance meters, and digital micro-ohmmeters. It delivers excellent measurement uncertainty performance along with fine resolution adjustment, making it an ideal standard for metrology laboratories and calibration institutions.
| Range | Fineness Adjustment | 24h Uncertainty (ppm*RD + μΩ) | 90 Days Uncertainty (ppm*RD + μΩ) | 1 Year Uncertainty (ppm*RD + μΩ) | Input Current |
|---|---|---|---|---|---|
| 1 mΩ | 10 nΩ | 50 + 0.5 | 75 + 0.5 | 100 + 0.5 | 1 A ~ 10 A |
| 10 mΩ | 100 nΩ | 50 + 1 | 75 + 1 | 100 + 1 | 0.5 A ~ 5 A |
| 100 mΩ | 1 μΩ | 50 + 3 | 75 + 3 | 100 + 3 | 0.3 A ~ 5 A |
| 1 Ω | 10 μΩ | 50 + 15 | 75 + 15 | 100 + 15 | 0.05 A ~ 5 A |
| 10 Ω | 100 μΩ | 50 + 150 | 75 + 150 | 100 + 150 | 10 mA ~ 300 mA |
| 100 Ω | 1 mΩ | 50 + 1500 | 75 + 1500 | 100 + 1500 | 1 mA ~ 30 mA |
General Specifications
- Power Supply: AC (220 ± 22)V, (50 ± 2)Hz
- Warm-Up Time: ≥1 hour (restart warm-up ≥2× shutdown duration)
- Max Power Consumption: 150 VA
- Operating Temperature: 18°C ~ 28°C
- Storage Temperature: -10°C ~ 50°C
- Operating Humidity: 20% ~ 80% R.H (non-condensing)
- Storage Humidity: < 85% R.H (non-condensing)
- Altitude: < 3000 m
- Weight: Approx. 10 kg
- Interfaces: RS-232, USB, LAN/IP
- Dimensions: 400 mm (W) × 265 mm (D) × 190 mm (H)
Key Features
- Wide adjustable DC resistance simulation from 1 mΩ to 100 Ω.
- High resolution adjustment enabling ultra-fine control of micro-ohm resistance.
- Excellent long-term stability with uncertainty as low as 50 ppm depending on range.
- Designed for calibration of bridges, micro-ohmmeters, and precision resistance meters.
- Multiple communication interfaces including USB, RS-232, and LAN (IP).
- Built-in thermal control and protection ensures safe and stable measurement under high currents.
- Suitable for laboratory-grade metrology and national standard verification systems.
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