804-R010-230 datasheet(2/8 Pages) MAGNETROL

2 / 8 page

The amount of capacitance developed in any vessel is

determined by: the size (surface area) of the probe; the

distance from the probe to its ground reference; and the

dielectric constant of the medium being measured.

Considering that the probe’s mounting position is fixed

and the dielectric of the medium is constant, then the

amount of capacitance developed in any vessel becomes

dependent upon the amount of the probe which is cov-

ered with media.

As the media rises and falls in the tank, the amount of

capacitance developed between the probe and the

ground reference also changes. The capacitance signal is

converted to a frequency proportional to the change in

level. The amplifier then converts this digital signal into

an isolated 4–20 mA analog output signal.

T E C H N O L O G Y

Supply voltage

120 VAC, 50/60 Hz (+10 – 15%)

240 VAC, 50/60 Hz (+10 – 15%)

24 VDC (±10%)

Power consumption

15 VA nominal

Ambient temperature range

-40° to +160° F (-40° to +70° C)

Humidity

99% non-condensing (electronics)

Accuracy

Better than ±1.0%

Repeatability

±0.1%

Linearity

±0.5%

Temperature effect

±0.01%/° F (±0.018/° C)

Operator interface:

Data entry

16-button keypad

Display

2 line

× 16 character LCD display

Continuous Output:

Active signal

4-20 mA (isolated), reversible, 1000 ohms max. loop resistance

Passive signal

4-20 mA (isolated), reversible, loop resistance

dependent on power supply

Range

5 pF minimum; 50,000 pF maximum

Damping

0-90 seconds

Discrete output (SPDT) with gold flash contacts:

Set point range

0-50,000 pF

Adjustable differential range

0.5 pF minimum; 50,000 pF maximum

Time delay

0-90 seconds level rising, level falling, both

Relay output:

10 amp @ 120/240 VAC resistive

10 amp @ 30 VDC resistive

0.5 amp @ 125 VDC resistive

Maximum remote cable length:

Standard

2500 feet (760 meters)

Intrinsically safe

800 feet (240 meters)

S P E C I F I C A T I O N S

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