Guildline Instruments is a leading powerhouse in the world of engineering, renowned for designing, manufacturing, and marketing ultra-precise instruments for metrology and oceanography such as Precision AC/DC Resistance Standards, Direct Current Comparator Resistance Bridge, High Resistance Meter/Bridge, DC Voltage Divider, Transconductance Amplifier, AC/DC Current Shunts, Precision DC Current Sources along with AC as well DC Precision Current measurement Transformers etc. 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.

ELECTRICAL METROLOGY

DC Voltage Divider & Power Analyzer

7520 Precision Automated DC Voltage Divider

Sub ppm ratio Uncertainties
Automated Self-Alignment (i.e. Self Calibration)
No External Standards required for Self-Alignment
Wider voltages range from 1:1 to 1000:1 & Reverse
Input voltage range from 1 to 1100 volts

Asynchronous Power Analyzer 7220

3-Phase Plus Neutral Measurements!
Input Current Ranges 5 Arms and 125 Arms!
Input Voltages up to 1250 Vpk
Able to Measure Any Signal Including Non-Sinusoidal and Quasi-Stationary!
Ideal for Noisy/Green Energy Sources!

RESISTANCE STANDARD & dECADE bOXES

9334A Precision DC Air Resistance Standards

Range : 1 µ to 100 GΩ
Accuracy: As low as 2 PPM !
Stability: As low as 2 PPM per year

9336-7 High Value Air Resistance Standards

Resistance Range 10MΩ to 100 GΩ
Stabilities Low as 10 ppm
Accuracy: As low as 2 PPM !
Low Temperature Coefficients

Temperature Stabilized Resistance Standards series 6634A/6636

A Family of up to 10 elements
Range 0.1Ω to 100TΩ
Outstanding stability <2 ppm/year
Ultra low TC < ± 0.005 ppm/°C
Low thermal EMI-shielded Chamber

AC/DC Resistance Standards 7330/7334

AC/DC Error: < 1 ppm at 1KHz
Stability: < 2 ppm/Year
Ultra Low T.C <0.2 ppm/°C
Range: 1Ω to 10 kΩ
Guard and Shield Compliant

9340-4T Precision 4-Wire Ultra Low Value RTD Simulators and DC Resistance Standards

Resistance Ranges include Decades from 1 µΩ to 10 kΩ
Excellent for milli-Ohm and micro-Ohm Applications and Instruments
True 4-Wire Terminal Design
Accuracy Better than ± 0.01 %

9340 Precision DC Resistance Standards

Widest Available Resistance Range From 10 mΩ to 10 TΩ
Lowest Available Temperature Coefficients (As low as 5 ppm/°C down to 0.01 Ω)
Lowest Available Power Coefficients
12 Month Stabilities as Low as < 10 ppm (Near Standard Resistor Performance)
Highest Current Handling Capabilities of Any Decade Standard (7 Amps)

RESISTANCE mEASUREMENT bRIDGES/mETERS

Direct Current Comparator Resistance Bridges Series 6622A

Widest Available Range from 1 mΩ ~1 GΩ
Best Accuracy: ± 0.015 ppm of Reading
Modular Design, Expandable Capabilities, Complete Investment Protection
Wide Range of Ratios: 0.1:1 ~ 100:1

Guildline Instruments High Resistance Measurement Bridge/Meter 6540/6530

Guildline Instruments High Resistance Measurement Bridge 6540 Front

Guildline Instruments High Resistance Measurement Bridge 6540 Back

High Resistance Measurement
Bridge/Meter 6540/6530

Bridge and Direct Measurement Modes of Operation
Resistance Range 100 kΩ to 20 PΩ
“True Ratio” Provides Multi‐Ratios from 1:1 up to 100:1
Test Voltages 1 to 1000 V

Resistance and Current Measurement
Systems 6625A

Complete Turn-Key System – Fully Integrated, Wired, Tested and Ready-to-Use
Widest Available Resistance Range from 1 μΩ ~1 GΩ with Internal Voltages to 1 kVdc
Precision Current Sources / Range Extension from 3 A to 10,000 A with Built-In Precision Current Source and Electronic Switching
Wide Range of Ratios: 0.1:1 ~ 100:1, and Up to 2,000,000:1 and More with Range Extension

High Current Range Extenders / Sources 6623A

Unique Guildline PATENTED Design
Dual Design – Extender and Precision DC Source
Includes Built-in Precision Current Source with Electronic Polarity Switching
Output Current Stability Typically < 10 ppm for 1000 A and Higher – Best in the World!
Advanced Modular Design, Over 64 Expandable Outputs in 150 A Increments to 10,000 A, Investment Protection
Measures Resistances Down to 0.1 μΩ
Automatic Control from 6622A Series Bridge

Guildline Instruments 6564 High Resistance Measurement Scanners

Guildline Instruments 6664C Low Thermal Quad Resistance Measurement Scanners

Resistance Measurement Scanners Model 6664C/6564

8/16-channel input & 2-channel output
Gold flashed tellurium copper terminals
Thermoelectric Potentials: <20 nV
Up to 1000 volts

Precision current sources

Transconductance Amplifier Model 7810

100 A Model!
Calibrated Frequency Range (DC to 100 kHz)!
Uncalibrated 100 kHz to 2 MHz!
High 9V Voltage Compliance!
Unique Touch Screen Interface and Embedded Windows Computer

DC Precision High Current Source 6623A-PCS

Precision DC currents up to 10,000 Amperes
Output Current Stability < 10 ppm for 1000 A and higher, Typically < 5 ppm
Programmable from 66259 USB Controller, or from 6622A Series Bridges
Modular Design, Expandable Capabilities in150 A Increments – Investment Protection
Built-in Single-Source Output Current with Electronic Polarity Switching
Eliminates Need for Mechanical Polarity Reversing Switches and Compressed Gas

precision cURRENT sHUNTS

Precision DC Current Shunts Model 9230A

Series Ranges from 10 A to 10,000 A
3 Point Current Calibration Provided
< 10 ppm Long Term Stability
Extremely Low Self-Heating Effects

Multiple DC Resistor/Current Shunt Model 9211B

Multiple range Resistance or Current Shunt
Resistance range: 0.0003Ω ~ 10KΩ
Current range: 10µA ~ 300A
Accuracy: ± 100ppm
Low TC : < 5 ppm/°C

Precision AC/DC Current Shunts Model 7340/7350

10 Ranges from: 1 mA to 100A
6 Models from 0.01Ω to 1 kΩ
Accuracy: ±35 ppm
Low T C: <2 ppm/°C
True None- Inductive Design
Ruggedized EMI Shielded Enclosure

precision cURRENT transformers

Precision AC Current Transformers 7223CT-2S

High Precision AC Current Measurements!
Test Current Range: 2000A
Test Voltage Range: 100kV with insulating bushings
Fixed Permanent Accuracy!
Measurement Accuracy <5 ppm at Power Frequencies for Both Ratio and Phase Angle!
Stability Measurement < 5 ppm!

High Current DC Transformer Model 6624CT-3000

Measurement Accuracies as low as 10 ppm!
Stability Measurement as low as 3 ppm!
3 Primary ranges (300. 1500 and 3000 Amperes)
Compatible with Guildline Precision Current Sources
Optional 66259 Provides automation for use with Guildline Precision Currents Sources

ABOUT US

We offer Precision Standards, measurement and calibration Instruments in field of Electrical, Temperature, Humidity & Pressure Metrology.

We have partnered with manufacturers who offer ‘best in class’ equipment that delivers the best measurement capability, optimum calibration performance, stability, and reliability.

CONTACT US

OPENING HOURS

QUICK LINKS

QUICK ENQUIRY FORM