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Differential DC Amplifier & Signal Conditioner Ectron Model 418
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The auto industry standard for on-board vehicle test, the Model 418 is small and rugged but is able to condition and amplify signals from
almost any bridge type transducer including strain gauges, load cells, and RTDs. On the test tracks, The Model 418 can produce high
accuracy data despite temperature extremes and high shock and vibration conditions. RFI/EMI protection is available to minimize the
effects of the many spurious signals from today's on-board electronics or even telemetry transmitters. Models with compatible enclosures
are available for crash test and other extreme applications.
The Model 418 is a true differential amplifier with transformer
isolation between input, output and the power source. An internal DC/DC converter provides bi-polar voltages for the circuitry while
accepting power from a single external DC power supply or battery. This is 12 volts for automotive applications or 28 volts for airborne
systems. In addition to the high performance DC amplifier, the units can be optionally supplied with integral strain gauge excitation supplies
and bridge balance or zero suppression. Transformer coupling contributes to high common mode rejection and the chopper design results
in superior zero stability. The use of top grade components and a rigorous testing program ensures reliable operation over a wide range
of ambient temperatures.
The Model 418 amplifier is packaged in a rugged, compact
steel case and will withstand high shock and vibration
levels under fully operational conditions. The Model 418
is intended for rack mounting and is equipped with a front
panel gain switch. Zero controls are also located on the
front panel in accordance with the options selected. The
front panel dimensions are 1.1" by 2.37" and the depth
is 4" (plus connector and controls). The R408 Series enclosures
are 3.5" high and optionally contain 115 VAC power supplies.
A full one year warranty applies when the equipment is
used under any environmental conditions within its rating.
Features:
• 100g shock, 20g vibration
• Excellent stability under large, fast temperature changes
• Ohmically isolated input and output
• True differential input
• High CMR and 100 V CMV
• Operation from vehicle battery supply
Options:
• Autozero on command
• Wide range zero suppression
• 100 mA output
• RFI/EMI protection
• Bridge balance
• 12 V ro 28 V dc powered
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