| The Ramsey CAP Series controls detect the presence or absence of material by sensing a change in capacitance, which is caused by the difference in dielectric constant of the vessel material and air. To detect these small changes, the Ramsey CAP Series sensors use a unique detection circuit that operates at a relatively low frequency level of 6 kHz. Unlike other capacitance sensors, the operating frequency of the Ramsey CAP Series is well below the RF level and is not subject to FCC regulation. These capacitance level controls have a fail-safe feature that eliminates problems caused by power disruptions. Their high/low selector switches allow the sensors to be set for fail-safe at low when material is absent, or at high when material is present. When a power interruption occurs, the control will indicate the condition that the user deems safe for the application.
Features and Benefits
- No radio frequency interference
- Quick-set calibration provides simple selection of detection sensitivity
- Calibration stability from -40°C to +82°C (-40°F to +180°F)
- UL listed/CSA approved
- NEMA 4X, 5, 9 & 12 for NEC Class II, Div. 1 & 2 Gr. E, F & G
- Shielded Delrin sleeve probe suitable for most solids, liquids and slurries
- No false reading from sidewall build-up
- Unsurpassed static discharge protection
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