Page 87 - Schroeder - Accessories

Electronic Level Switch

The level switch HNS 526 is a non-contact, highly compact sensor for fluid level measurement in stationary HNS-526 Air Breathers
applications. By definition, its functional principle (measurement of sound transmission time) means that it
operates with an extremely high resolution and measurement rate. Suction
The HNS 526 is available for measurement ranges up to 6400 mm and is obtainable in different signal output Separators
variants (2 switching outputs; 1 switching output and 1 analog output, either 4 .. 20 mA or 0 .. 10 V). and
The sensor can be adjusted simply and conveniently via two push-buttons and a self-explanatory menu structure Strainers
according to VDMA.
The actual fluid level can be displayed in a 3-digit digital display either in absolute value or in percent
(selectable); 2 three-color LEDs also indicate the operating status. Oil Sight
Glasses
Features and Benefits
■ Non-contact distance measurement ■ 2 three color LEDs to display the operating Electronic
■ Measurement range up to 6400 mm status Sensors
■ Various signal output versions available ■ Switching and switch-back points can be
■ Very high resolution and measurement rate adjusted independently
■ Integrated temperatures compensation ■ Selectable analog output (optional) Fluid Level
Indicators
■ 3-digit digital display to show the actual ■ Only for use in depressurized applications
distance ■ Must be installed vertically to the fluid surface

Input Data Specifications
Operating Range: 11.02” (280 mm); 18.90” (480 mm); 63.00” (1600 mm);
157.48” (4000 mm); 252.00” (6400 mm)
Blind Zone: 0”-1.18” (0-30 mm); 0”-3.35” (0-85 mm); 0”-7.87” (0-200
mm); 0”-13.78” (0-350 mm); 0”-23.62” (0-600 mm)
Maximum Range: 13.78” (350 mm); 23.62” (600 mm); 78.74” (2000 mm);
196.85” (5000 mm); 314.96” (8000 mm)
Resolution: ≤ 0.18 mm
Output Data
Accuracy: ≤ ± 1% of the actual measured value
Repeatability: ± 0.15% of the actual measured value
Analog Output (optional)
Signal(short-circuit resistant): Selectable:
4 .. 20 mA R Lmax 100 Ω (U b ≤ 20 V)
R Lmax 500 Ω (U b > 20 V)
0 .. 10 V R Lmin 100 Ω (U b ≥ 20 V)
Switch Outputs
Type: PNP transistor output (short-circuit resistant)
Switching Current: Max. 200 mA per switching output
Switching Directions: N/O or N/C, adjustable
Switching Cycles: > 100 million
Reaction Time: 32; 64; 92; 172; 240 ms
Environmental Conditions
Operating Temperature: -13°F to 158°F (-25°C to 70 °C)
Storage Temperature Range: -40°F to 185°F (-40°C to 85 °C)
DIN EN 60947-5-2
Mark: DIN EN 60947-5-7
Vibration Resistance to DIN EN 60068-2-6 (10 .. 55 Hz): ≤ 2 g
Shock Resistance to DIN EN 60068-2-27 (11 ms): ≤ 30 g
Protection class to IEC 60529: IP 67
Other Data
Supply Voltage: 9 .. 30 V DC without analog output
20 .. 30 V DC with analog output
Time Delay Before Availability: < 300 ms
Residual Ripple: ± 10%
No-load Current Consumption: ≤ 80 mA
Electrical Connection: Male M12x1, 4 pole Notes:
Housing: Brass, Nickel-plated; Ultrasonic Transducer with PEEK film Reverse polarity protection
Display: 3-digit, LED Display, 2 three-color-LEDs of the supply voltage,
Controls: 2 push-buttons excess voltage, override
and short circuit protection
Weight: 0.33 lbs (0.15 kg); 0.46 lbs (0.21 kg); 0.60 lbs (0.27 kg) are provided.
SCHROEDER INDUSTRIES 85