LT-439 Dielectric Channel for Cure Monitoring

The LT-439 Dielectric Channel, available from Lambient Technologies, is a cost-effective device suitable for cure monitoring in Quality Control/Quality Assurance, R&D and in manufacturing of thermoset materials such as coatings, composites, paints, and resins.

The LT-439 can perform measurements by connecting to any control network using the RS-485 serial port. Each instrument can support one thermocouple and one dielectric sensor, while nearly 256 single Dielectric Channels can be interfaced on a single RS-485 line, allowing multi-channel cure monitoring of materials at any stage and eliminating complex cabling.

The LT-439 Dielectric Channel has standard frequencies of 10Hz, 100Hz, 1.0KHz and 10KHz and they can be used for selecting optimal frequency for specific application. The frequency option can also be expanded from 1.0Hz to 100KHz.

The LT-439 Dielectric Channel Interface, when utilized with reusable or disposable dielectric/conductivity sensors, can operate efficiently in all environments for dielectric cure monitoring.

In addition, an optional CureView software is available to manage the LT 439 for a full dielectric cure monitoring system. This software helps users to classify cure monitoring parameters, attain and store data, recollect and examine data, and plan and print results. The cure state information can be integrated into the process control software of users.

Key Features

The main features of the LT-439 Dielectric Channel are:

  • Compact and cost effective instrument for cure monitoring
  • RS-485 serial port helps connect to any control network and has capacity to connect up to 256 individual dielectric channels using a single line
  • Supports one thermocouple and one dielectric sensor
  • Low-cost flexibility allows multi-channel cure monitoring of materials simultaneously and reduces complex cabling
  • Optimum frequency for application
  • Optional CureView software helps manage the LT 439 for a full dielectric cure monitoring system

Key Specifications

The main specifications of the LT- 439 Dielectric Channel are as follows:

Physical: Dimensions: 8.5” width x 4.0” height x 12.5 depth”
(21.6cm width x 10.1cm height x 31.8cm depth)
Weight: 4lbs (1.8kg)
Electrical: Power: 100 VAC – 240 VAC, 50/60 Hz autoswitching universal input, 1 A max
Measurement: Standard frequencies: 10 Hz, 100 Hz, 1.0 KHz and 10 KHz
Expanded frequency option: Available frequencies (Hz):
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
10 20 30 40 50 60 70 80 90
100 200 300 400 500 600 700 800 900
1.0 k 2.0 k 3.0 k 4.0 k 5.0 k 6.0 k 7.0 k 8.0 k 9.0 k
10 k 20 k 30 k 40 k 50 k 60 k 70 k 80 k 90 k
100 k
Measurement speed: 0.5 sec for 100 Hz - 100 KHz,
1.0 sec for frequencies less than 100 Hz and greater than 2 Hz,
3.0 sec for frequencies less than 2 Hz
Excitation amplitude: Sine wave, 2.0 V nominal (4.0 V peak-to-peak)
Inputs: 1 dielectric sensor, 1 thermocouple, 2 opto-isolated digital triggers (0-5 V)
Outputs: 2 isolated relay contacts (0.5 A max capacity each relay)
Dielectric sensor type: Interdigitated, parallel plate or single electrode
Thermocouple type: J standard, K by special order
Communications: RS-485
Multi-channel capability: Up to 256 LT-439 units on a single RS-485 line
Software: Included: Terminal software for basic communication and control (User must write own data acquisition software or access LT-439 functions via user network)
Optional CureView Lite: Basic data acquisition and plotting, limited analysis. Output files written in Microsoft Excel format.
Optional CureView: Complete data acquisition package with full analysis capability and features, including Critical Point Analysis.

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