Type 8111

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1.3. Vibrating level switch with relay output

Product properties

Operating mode

Adjustable

• A = max. detection or overflow/overfill protection

• B = min. detection or dry run protection

Electrical data

Operating voltage

20…253 V AC, 50/60 Hz or 20…72 V DC (at U > 60 V DC the ambient temperature must be max.

+ 50 °C (+ 122 °F))

Protection class according to

IEC 61010-1

I

Power consumption

1…8 VA (AC); approx. 1.5 W (DC)

Switching voltage

Max. 253 V AC/DC

Switching current

Max. 3 A (AC, cos phi > 0.9), 1 A (DC)

Switching power

• Min. 50 mW

• Max. 750 VA AC, 40 W DC (with U < 40 V DC)

Output

Relay (DPDT), 2 floating SPDTs

Process/Pipe connection & communication

Electrical connection

2 cable glands M20 × 1.5

1.4. Vibrating level switch with NAMUR output

Product properties

Operating mode

NAMUR output adjustable to falling or rising characteristics

• Min.: Rising characteristics (High current when wetted with liquid)

• Max.: Falling characteristics (Low current when wetted with liquid)

Electrical data

Operating voltage

• Voltage supply: via connection to an amplifier according to NAMUR IEC 60947-5-6, approx. 8.2 V

• Open-circuit voltage: U

0 approx. 8.2 V

• Short-circuit current: I

U approx. 8.2 mA

Protection class according to

IEC 61010-1

II

Current consumption

• Falling characteristic: ≥ 2.2 mA (blade uncovered) / ≤ 1.0 mA (blade covered)

• Rising characteristic: ≤ 1.0 mA (blade uncovered) / ≥ 2.2 mA (blade covered)

• Fault signal: ≤ 1.0 mA

Output

2-wire current modulation according to NAMUR

Process/Pipe connection & communication

Electrical connection

1 cable gland M20 × 1.5

Necessary processing system

NAMUR processing system according to IEC 60947-5-6 (EN 50227/DIN 19234)