The LT-451 Dielectric Cure Monitor is a compact, versatile instrument designed for Research & 

Development, Quality Assurance/Quality Control, and Production applications involving thermoset materials—

resins, composites, paints and coatings. 

The wide 0.001 Hz – 100 KHz frequency range of the LT-451 enables frequency sweeping for studies of 

dielectric properties, and sensitivity to very high resistivity and ion viscosity (very low conductivity and loss 

factor). The associated thermocouple input allows correlation of temperature with cure rate and material 

properties. 

The LT451 is available with one, two, four or eight channels. Each channel consists of one dielectric 

sensor input and one thermocouple input. 

CureView Data Acquisition software, included with the LT-451, has functions for defining cure 

monitoring parameters; data acquisition, analysis and recall; plotting and printing. 

When used with either disposable or reusable dielectric sensors, also available from Lambient Technologies, or 

the user’s own sensors, the LT-451 Dielectric Cure Monitor and CureView data acquisition software form a 

complete measurement system for studying dielectric material properties in all processing environments.



The LTF-631 High Speed Dielectric Cure Monitor is designed for the study of rapidly reacting materials in Research & Development, Quality Assurance/Quality Control, and Production applications involving thermoset materials--resins, composites, paints and coatings. The 10 Hz to 10 KHz frequency range of the LTF-631 permits excellent sensitivity for SMC/BMC and UV curing systems, and the associated thermocouple input allows correlation of temperature with cure rate and material properties. The LTF-631 is available with a maximum of four dielectric channels. Each channel consists of one mid-conductivity dielectric sensor input and one thermocouple input. A single-channel instrument may be upgraded at any time with additional channels. In addition to the dielectric channel(s), the LTF-631 has two general analog inputs which may be used for pressure sensors and LVDT signals. The CureView Data Acquisition Software has functions for defining cure monitoring parameters; data acquisition, analysis and recall; plotting and printing. When used with either disposable or reusable dielectric sensors, also available from Lambient Technologies, or the user’s own sensors, the LTF-631 High Speed Dielectric Cure Monitor and CureView data acquisition software form a complete measurement system for studying dielectric material properties in all processing environments.



The LT-4203A Parallel Plate Test Fixture is designed for measuring the AC loss characteristics and permittivity

of solid laminates and panels per ASTM Standard D150-98, and implements the guarded electrode (three terminal) measurement preferred as the referee method. 

 The standard sense electrode is 6.0 cm in diameter and the electrode separation may be adjusted to accommodate various sample thicknesses. A removable micrometer head permits measurement of electrode separation before testing. The 1.0 cm wide guard electrode eliminates fringing electric fields around the sense electrode for accurate calculation of test cell capacitance. 

Both electrodes are surrounded by a grounded frame which acts as a Faraday cage to reduce pickup of electrical noise. 



The LT-4123 Liquid Dielectric Test Cell is designed for measuring the AC loss characteristics and permittivity of liquids and implements the preferred guarded electrode (three terminal) measurement. Optimum sample volume is 52-53 ml. The LT-4123 has a spout that allows excess liquid to overflow into a cup or other receptacle. Overflow volume is 65 ml. The center sense electrode is 7.62 cm (3”) in diameter. The separation between the sense and excitation electrodes is approximately 3 mm (0.118”). For accurate measurement of test cell capacitance, a guard electrode eliminates fringing electric fields around the sense electrode. The test cell has a grounded frame which acts as a Faraday cage to reduce pickup of external electrical noise.