Question

Give three example of an industrial capacitive probe; give model number, manufacturer and one page of the data sheet?

Answer 1

A capacitance probe is a point level indicator, commonly used for high or low level detection in a bin, tank or silo.

1. Standard capacitance probe

Model: PROCAP I & II

Manufacturer: BIN MASTER

The PROCAP I & II standard capacitance probes detect the presence or absence of material in contact with the probe by sensing minute changes (as low as 0.5 pF) in capacitance caused by the difference in the dielectric constant of the material versus the air.

2. Capacitive rod probe for continuous level measurement

MODEL: VEGACAL 62

Manufacturer: Vega

The VEGACAL 62 is a level sensor for continuous level measurement in all industries. The partly insulated probe is designed for measurement of bulk solids and can also be used in non-conductive liquids such as oil.

3. Bendable Capacitance Probe

Item Code: BC-530-0544

Manufacturer: binmaster

Designed to fit in tight spaces or in vessels where obstructions prevent the installation of a straight probe, the bendable capacitance probe is mounted on the side of a bin.

PROCAP 11 GENERAL SPECIFICATIONS Supply: 115/230 VAC 50/60 Hz (selectable) Supply Tolerance: -15% +10% Load: 2.2VA Ambient Temperature: (Electronics) -40°F to +158°F (-40° C to +70°C) Sensitivity: 1 picofarad Enclosure: PROCAP II PROCAP IX Type 4X, 5, 9, & 12 (HAZ LOC CL II E, F. & G) Type 4X, 5, 7, 9, & 12 (HAZ LOC CLIC&D: CL II E,F, & G) Relay Output: DPDT contacts: 10 Amps 250 VAC Fail-Safe: Switch selectable "High" or "Low level modes. Calibration: Set when probe is uncovered: COARSE adjust; single turn potentiometer FINE adjust: single turn potentiometer Status Indicator: Internal LED indicates material in contact with probe. PROCAP II has an external LED also Time Delay: Independently adjustable up to 30 seconds Probe Shield: Automatically compensates for material buildup on the probe Mounting: 1 1/4" or 3/4" NPT. When used in liquid applications the stainless steel threads must be used to insure a proper seal Conduit Entry: 3/4" NPT

VEGA nent Technical data Measuring range Process fitting Process pressure 6 m (19.69 ft) Thread from G12, 12 NPT, flanges from DN 50,2" -1... +64 bar/-100... +6400 kPa (-14.5... +928 psig) -50 ... +200 °C (-58 ... +392 °F) -40 ... +80°C (-40 ... +176 °F) Process temperature Ambient, storage and transport temperature Operating voltage SIL qualification 12 ... 36 V DC Optionally up to SIL2