TD1470 Single and Double Arm Bridge Calibration Device

TD1470 Single and Double Arm Bridge Calibration Device

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.