Depth Sensor – ATM/N/T

 

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In order to measure strain with a bonded resistance strain gage, it must be connected to an electric circuit that is capable of measuring the minute changes in resistance corresponding to strain. Strain gage transducers usually employ four strain gage elements electrically connected to form a Wheatstone bridge circuit (Figure 2-6).

A Wheatstone bridge is a divided bridge circuit used for the measurement of static or dynamic electrical resistance. The output voltage of the Wheatstone bridge is expressed in millivolts output per volt input. The Wheatstone circuit is also well suited for temperature compensation.

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• Piezoresistive measuring element

• Adjustable 1:4 of the nominal range within -5% to +105% FS

• All pressure ranges between 0…50 mbar and -1…1000 bar available

• Pressure units adjustable

• Recalibration function for zero and span

• Adjustable time delay

• Reverse polarity and short circuit protected

• Interface RS485 (MODBUS) Output: pressure and temperature

• Active compensated (option) - Digital temperature compensated

• Industrial Measurement

• Process & Control

• Food & Beverage

• Hydraulic Test benches

Technical Details
Pressure Range (bar) 0.1...0.5 >0.5...2 >2...25
Overpressure 3 bar 3 x FS
(min. 3 bar)
3 x FS
Burst Pressure >200 bar >200 bar >200 bar
Accuracy¹ [± % FS] ≤0.5
(optional ≤ 0.25)
≤0.5
(optional ≤ 0.25)
≤0.5
(optional ≤ 0.25)
Thermal Shift [± % FS/°C]:
Zero -5...50°C ≤0.06²) ≤0.03 ≤0.015
Span -5...50°C ≤0.015 ≤0.015 ≤0.0152
Long Term Stability (1 year)-(typ./max) ≤0.5% FS/
<4 mbar
≤ 0.2% FS/
<4 mbar
≤0.1% FS/
<0.2% FS
Measuring Range Temperature Sensor
Temperature Measuring Range -5...50°C
Min. Temperature Difference 30°K
Accuracy (-5…50°C) typ. ±0.5°C/max. ±1.0°C
Output Signal 4...20mA 0...20mA 0...5V / 0...10V
Type Current
Transmitter
Current
Transmitter
Voltage
Transmitter
Supply Voltage (Ub)
Supply Voltage Influence
15…30 V DC
< 0.1% FS
15…30 V DC
< 0.1% FS
15…30 V DC
< 0.1% FS
Circuit Diagram (Refer to the catalogue)
Load Resistance
Load Resisance Influence
(Ub – 5V) / 0.02A
< 0.1% FS
(Ub – 5V) / 0.02A
< 0.1% FS
RL > 10kΩ
< 0.1% FS
Material
Process Connection, Diaphragm,
Housing Seal (Standard)
Stainless steel 1.4435 (316L), other materials
(e.g. titanium) on request
Viton (other materials see ordering information)
For more information, please refer to the catalogue
Note: Specification are subject to change without notice


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