Electrical Metrology
Guildline Instruments has been a premier manufacturer of electrical metrology equipment for 50 years and counting. Every electrical standards laboratory from national labs to defense labs to quality instrument manufacturers has made use of the many metrology products Guildline produces. Featured instruments include resistance bridges with proven DCC technology, low thermal EMF scanners and current extenders. All of these can be incorporated into complete turn-key systems for the most demanding applications. Guildline has a complete line of resistance standards and current shunts both AC and DC for any electrical resistance measurement at the lowest uncertainties in the industry. A new Quantum Hall Resistance system has been introduced to produce the ultimate in electrical resistance measurements. The 6622A-QHR is the Quantum version of the reliable 6620 series DCC bridge and operates at room temperature greatly increasing reliability and lowering operating costs. The additional cryogenic equipment including dewar, superconducting magnet, associated power supply, and the QHR device insert are provided in cooperation with Oxford Instruments and complete the system.
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Guildline Instruments 5030 series of precision air baths provide uniform constant temperature stable to 0.03°C over 24 hrs. With the improved temperature coefficients of Guildline products, these high quality air baths are an excellent alternative to traditional oil baths for environmental control.These baths have a range of 15°C to 50°C and a cooling capacity to 6°C below ambient. The enclosure is also fully EMI shielded.Two circulation fans provide excellent circulation plus a measure of redundancy. Unlike liquid baths, there are no expensive supplies to replenish, and operation is tidy and contained. This high quality unit can be operated on a bench or free-standing.
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The 5600 series of fluid bath is a new design to meet the performance required by Metrology Labs and Oceanography applications. The 5600 provides uniform constant fluid temperature over a range from -5C to + 55C. It can be used with oil, water, salt water or other liquids. Temperature stability as low as +/- 0015K with oil! These convenient sizes of 50L, 75L, or 100L, are constructed of fiberglass with proprietary EMI shielding! Fully automation via Windows based tablet with touch screen!
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Guildline Instruments 6530 TeraOhm Bridge-Meter Series is the latest innovation in High Resistance and Ultra-High Resistance Measurements. These Bridge-Meters incorporate the latest technology for high resistance measurements providing Metrologists with measurement results superior to that of commercially available Dual Source Bridges. Bridge Mode and Direct Measurement Mode of Operation Resistance Range 100 kΩ – 10 PΩ Bridge Mode Multi-Ratios up to 1000:1 Optional DC Current Measurement Range 10 µA to 100 fA Existing 6520’s can be Upgraded to any of the four NEW 6530 Models Surface and Volume resistivity measurements
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Guildline Instruments 6622A series introduces new design concepts and the best in measurement uncertainties for Direct Current Comparator (DCC) Resistance Bridges manufactured by anyone today. Unique innovations in 6622A design and modularity means users no longer have to decide what Bridge satisfies current requirements as well as guess as to what Bridge would meet future requirements. Resistance Range 1mΩ – 1 GΩ Modular, expandable design Unique measurement trending display Measurement to 1 µΩ with currents to 3000A The 6622T adds temperature measurement functionality to the 6622A
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Guildline Instruments model 6622T Thermometry Bridge expands upon the success of 6622A Series Resistance Bridges by utilizing Guildline’s electrical metrology expertise to offer outstandingly low thermal uncertainty and extreme stability. Unique innovations in hardware and software design have brought about this wide range thermometry bridge accommodating SPRT’s, PRT’s, various RTD’s including thermistors. The measurement range of the 6622T is from 0.1Ω to 100kΩ.
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Guildline Instruments 6623 DCC Bridge Range Extender is a high current adapter, including an integral reversing switch, designed specifically for use with the 6675A or 9975 Direct Current Comparator bridges. The 6623 allows currents of up to 100 Amperes to pass through the resistor under test. Built in Reversing Switch to reduce thermal EMF effects Improved accuracy and reduced costs
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Technel and Guildline work together to determine which equipment best fits your requirements and your budget. The 6625A is a modular, customer specified Resistance Measurement System. Typically, the System is composed of a 6622A Series Bridge, a 6634A Resistance Standard, 6664C Series Scanners and a 6623A Series Range Extender.
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Guildline’s 6664C Low Thermal Quad Scanner is the first commercial scanner capable of operating at 1000V. This has greatly improved the measurement/calibration throughput of standards laboratories, since many high ohm measurements can now be automated. Withstands up to 1000 VDC to provide fully automated resistance measurements Each Channel handles Up to 2 Amps Contact Life: >10,000,000 Cycles 4 Terminal Switching Matrix, 8 or 16 Channel Inputs, 2 Channel Outputs 8 Channel is upgradeable to 16 Channels Gold Flashed Tellurium Copper Terminals
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Guildline’s 7220 Asynchronous Power Analyzer is a portable 3 phase AC power measurement instrument, designed for the most demanding field power applications. Innovative, patent pending current sensing technology provides unprecedented current and voltage measurement accuracy and uncertainty. 24 bit A/D conversion technology increases the dynamic range and accuracy of this instrument. Innovative Current Sensing Technology 24 bit Conversion Asynchronous Operation Measures Stationary & Quasi-Stationary Wave Forms Three Phase plus Neutral 50Hz – 60Hz – 400Hz
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Guildline Instruments 7350 series of four-terminal AC Current Shunts are high-accuracy, high stability non-inductive shunts in a ruggedized and shielded enclosure. The 7350 series shunts are constructed with very small values of reactance and are ideal for use over a wide frequency range from DC to 100 kHz with uncertainty down to 35 ppm, low temperature coefficients and excellent stability. To suit a wide range of customers and applications, the 7350 Series shunts provide power dissipation capability of up to 10 Watts and a maximum current capability up to 25A. For best performance, the model 73401 Forced Convection Unit is available for forced aircooling.
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Guildline Model 7620 is a very wide band transconductance amplifier. By connecting the output from a stable voltage source to the 7620, it is capable of producing outputs up to 20 amps over a specified frequency range of DC to 100 kHz, and a usable frequency range extending to 1 MHz. Stability Ranges, (6) 200μA to 20A Frequency DC to 1 MHz Compliance 10 volts Guarded output
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Guildline Instruments model 9211B is a four-terminal bench-top or rack-mount instrument designed for convenient measurement of current in nine ranges from 10 mA to 300 A. All connections and adjustments are accessible on the front panel. Range selection is made by means of two brass plugs inserted into the ports on the panel. NSN: 6625-20-009-3629