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Guildline Instruments is a leading Engineering Company renowned for designing, manufacturing, and marketing ultra-precise instruments for metrology and oceanography. Since 1957, our instruments have been instrumental in cutting-edge research and establishing traceability to fundamental electrical standards. Our clientele includes national research laboratories, metrology institutes, calibration facilities, militaries, nuclear power plants, aerospace entities, and electrical and power industry companies.


Temperature Metrology

TEMPERATURE BRIDGES SERIES 6640T

  • Best Accuracy: ± 0.015 ppm with 1 mA of Current
  • Linearity: < ± 0.005 ppm of Full Scale
  • Patented Toroid Design Specifically for Temperature Measurement Applications
  • Measurement Rates Fast as 2 Seconds
  • First Measurement in < 10 Seconds
  • Built-in Windows 10 Computer and Touch Screen Display Providing Complete Measurement Results and Graphs
  • System Control via USB, Network, or IEEE
  • Widest Available Resistance Range up to 100 kΩ
6622T

Temperature Bridge Series 6622A-T

  • Accuracy to 0.025 mK (i.e. best uncertainty at 0.1 ppm)
  • Extended Performance (XP) Model Provides Best Accuracy at 0.013 mK (i.e. best uncertainty at 0.05 ppm)
  • Wide Range From 0.1 Ω ~ 100 kΩ, Supporting a Wide Variety of SPRT’s, PRT’s, and RTD’s
  • Resolution: ± 0.1 ppb of Full Scale and Linearity: ± 0.01 ppm of Full Scale
  • Built in Temperature Conversion for ITS-90 and IPTS-68
  • Graphical and Statistical Display
  • Wide Range of Ratios: 0.1:1 ~ 100:1
  • Fully Programmable IEEE 488.2 with BridgeWorks™ Data Acquisition Software

Resistance Measurement Scanners Model 3210T

  • Pre- Heat Currents from 20µA to 150mA
  • Connects 8 PRT’s/SPRT’s at one time
  • Individual Programmable “Pre-Warm” Current available

Precision Air Baths Model 5031/5032

  • Excellent Temperature Stability, Better Than 0.015 ˚C over 24 Hours
  • Only Precision Air Bath that Includes a Separate PRT to Report the True Temperature from Anywhere Inside the Bath Chamber
  • Temperature Range 15 ˚C to 50 ˚C
  • Cooling Capacity up to 6 ˚C Below Ambient
  • Large Volume Enclosure – Over 82 Liters!
  • Perfect for Checking Temperature Coefficients of Precision Air Resistors
  • 5032 Fully Programmable Via the IEEE-488.2 or RS 232 Standard Interfaces

Precision Temperature fluid/oil baths Model 5600

  • Full Automation Via a Windows 10 Computer (USB, IEEE)
  • Excellent Temperature Stability Low As: ±0.0015 K with Oil!
    ±0.001 K with Water!
  • Fluid Temperature Range -5°C to 55°C
  • Designed for use with Oil, Salt Water, Water, and other Fluids
  • Customer Choice of 4 Tank Sizes: 50 L, 75 L, 100 L and 300 L 
  • Fiberglass Tank with Proprietary EMI Shielding
  • Excellent Control via a PRT Sensor
  • 2nd Temperature Probe Included to Report Actual Temperature Anywhere in the Bath