AMS4711

AMS4711 ANALOGMICRO | Alldatasheet

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Miniaturized pressure transmitter with 0 .. 5 V output Analog Microelectronics GmbH An der Fahrt 13, D – 55124 Mainz March 2015 - Rev. 4.0 Phone:+49 (0)6131/91 0730-0 Fax: +49 (0)6131/91 073-30 Internet: www.analogmicro.de E–Mail: info@analogmicro.de

FEATURES

 Calibrated and temperature compensated pressure sensor with 0 .. 5 V output voltage  Differential / gage, bidirectional differential, absolute and barometric versions  Wide variety of pressure ranges: 5 mbar up to 2 bar  Piezoresistive sensing element  High precision digital signal conditioning  High accuracy at room temperature  Low overall error within a temperature range of -25 .. +85°C  Supply voltage range: 8 .. 36 V  Compact and robust package  Dust- and water-tight (IP67)  M5 circular sensor connector  Ready to use, simple and quick installation  RoHS and REACH compliant TYPICAL APPLICATIONS  Static pressure sensing  Dynamic pressure sensing  Barometric pressure sensing  Vacuum measurement  Level measurement  Gas flow measurement  Heating, Ventilation and Air Conditioning (HVAC) GENERAL DESCRIPTION AMS 4711 is a series of miniaturized pressure transmitters suitable for industrial applications and high precision measurements. All AMS 4711 can be powered with in a supply voltage range of VS = 8 .. 36 V and p rovide an industrial output voltage range of VOUT = 0 .. 5 V . They are calibrated and temperature compensated in a wide temperature range of -25 .. +85°C. AMS 4711 comes in a robust plastic package and is ready to use. Pressure is either applied via two barbed side ports for differential (relative) or bidirectional differential pressure transmitter types or via a single port for absolute or barometric types. The electrical connection is realized with a n M5 circular sensor c onnector. AMS 4711’s package is dust- and water -tight conforming to IP67. The pressure transmitters in the AMS 4711 series are available for various applications and pressure ranges: Differential (relative) devices in pressure ranges from 0 .. 5 mbar up to 0 .. 2 bar, absolute pressure variants for 0 .. 1 bar and 0 .. 2 bar as Bidirectional-differential devices are available from -5 .. +5 mbar up to -1 ..+1 bar for measurement of positive and negative differential pressure. Other pressure ranges and customized output voltage ranges are available on request.

Miniaturized pressure transmitter with 0 .. 5 V output March 2015 - Rev. 4.0 Page 2/8 www.analogmicro.de PRESSURE RANGES Pressure transmitter type (code) Pressure type Pressure range in mbar Burst pressure1) in bar Pressure range in PSI Burst pressure1) in PSI Ultra low pressure AMS 4711-0005-D AMS 4711-0010-D AMS 4711-0005-D-B AMS 4711-0010-D-B differential / relative differential / relative bidirectional differential bidirectional differential 0 .. 5 0 .. 10 -5 .. +5 -10 .. +10 >0.35 >0.35 >0.35 >0.35 0 .. 0.073 0 .. 0.145 -0.073 .. +0.073 -0.145 .. +0.145 Low pressure AMS 4711-0020-D AMS 4711-0050-D AMS 4711-0100-D AMS 4711-0020-D-B AMS 4711-0050-D-B AMS 4711-0100-D-B differential / relative differential / relative differential / relative bidirectional differential bidirectional differential bidirectional differential 0 .. 20 0 .. 50 0 .. 100 -20 .. +20 -50 .. +50 -100 .. +100 >0.5 >0.5 0 .. 0.290 0 .. 0.725 0 .. 1.450 -0.290 .. +0.290 -0.725 .. +0.725 -1.450 .. +1.450 >15 >15 >15 >15 Standard pressure AMS 4711-0200-D AMS 4711-0350-D AMS 4711-0500-D AMS 4711-1000-D AMS 4711-2000-D AMS 4711-0200-D-B AMS 4711-0350-D-B AMS 4711-1000-D-B AMS 4711-1000-A AMS 4711-2000-A AMS 4711-1200-B differential / relative differential / relative differential / relative differential / relative differential / relative bidirectional differential bidirectional differential bidirectional differential absolute absolute barometric 0 .. 200 0 .. 350 0 .. 500 0 .. 1000 0 .. 2000 -200 .. +200 -350 .. +350 -1000 .. +1000 0 .. 1000 0 .. 2000 700 .. 1200 0 .. 2.901 0 .. 5.076 0 .. 7.251 0 .. 14.50 0 .. 29.01 -2.901 .. +2.901 -5.076 .. +5.076 -14.50 .. +14.50 0 .. 14.50 0 .. 29.01 10.15 .. 17.40 >72 >72 >72 >72 >72 >72 >72 >72 >72 >72 >72 Table 1: AMS 4711 standard pressure ranges (other ranges on request) Notes: 1) Burst pressure is defined as the maximum pressure, which can be applied to one pressure port relative to the other port (or while only one pressure port is connected) without causing damages / leaks. MAXIMUM RATINGS Parameter Minimum Typical Maximum Units Maximum supply voltage: VS,max Operating and storage temperature: T Common mode pressure: pCM -25 V bar Table 2: Maximum ratings Notes: 1) Common mode pressure is defined as the maximum pressure, which can be applied simultaneously on both pressure ports of a differential or bidirectional transmitter without causing damages, while no differential pressure is applied.

Miniaturized pressure transmitter with 0 .. 5 V output March 2015 - Rev. 4.0 Page 3/8 www.analogmicro.de SPECIFICATIONS All parameters apply to VS = 24 V, Top = 25°C and RL = 10 kΩ, unless otherwise stated. Parameter Minimum Typical Maximum Units Analog output signal @ specified minimum pressure (see “pressure ranges”)1) @ specified maximum pressure (see “pressure ranges”)1) Full span output (FSO)2) without pressure (only bidirectional differential types) < 0.025 2.5 0.05 V V V V Accuracy3) @ Top = 25°C Ultra low pressure types (5, 10 mbar) Low pressure types (20, 50, 100 mbar) Standard pressure types (≥ 200 mbar) ±1.0 ±0.5 ±0.5 ±1.5 ±1.0 ±1.0 %FSO %FSO %FSO Overall error4) @ Top = -25 .. 85°C Ultra low pressure types (5, 10 mbar) Low pressure types (20, 50, 100 mbar) Standard pressure types (≥ 200 mbar) ±1.5 ±1.0 ±0.7 ±2.5 ±2.0 ±1.5 %FSO %FSO %FSO Long term stability < 0.5 %FSO/a Nonlinearity5) -0.3 < 0.1 0.3 %FSO Resolution analog output signal 0.05 %FSO Supply voltage (VS to GND) 8 24 36 V Current consumption 5 mA Response time (10% .. 90% rise time) 1 2 ms Load resistor RL 2 kΩ Capacitive load 50 nF Dependency of VOUT on VS 6) < 0.1 %FSO Pressure Changes 106 Compensated operating temperature range TOP -25 85 °C Weight without cable 20 gram Media compatibility See notes7), 8) Protection classification9) IP67 Table 3: Specifications SPECIFICATION NOTES: 1) Pressure ranges are specified in Table 1. 2) The Full Span Output (FSO) is the algebraic difference between the output voltage at the specified minimum pressure and the output voltage at the specified maximum pressure (nominal FSO = 5 V). 3) The accuracy is defined as the maximum deviation of the measurement value from the ideal transfer function at room temperature (RT) in %FSO including the adjustment error (offset and span), nonlinearity, pressure hysteresis and repeatability. Nonlinearity is the measured deviation from the best fit straight line (BFSL) across the entire pressure range. Pressure hysteresis is the maximum deviation of the output value at any pressure within the specified range when the pressure is cycled to and from the specified minimum or maximum pressure. Repeatability is the maximum variation of the output value at any pressure within the specified range over 10 pressure cycles. 4) The overall error is defined as the maximum deviation of the measurement value from the ideal transfer function in %FSO across the entire temperature range (-25 … 85 °C).

Miniaturized pressure transmitter with 0 .. 5 V output March 2015 - Rev. 4.0 Page 4/8 www.analogmicro.de 5) Defined as best fit straight line (BFSL). 6) The given value is the maximum deviation from the output voltage at VS = 24 V over the complete supply voltage range at any pressure in the specified range. It is normalized to the FSO. 7) Media compatibility of pressure port 1 (for a description of port 1, see Figure 3): fluids and gases non-corrosive to ceramics, silicon, Pyrex, RTV silicone rubber and Zytel PA66. 8) Media compatibility of pressure port 2 (for a description of port 2, see Figure 3): clean, dry gases, non-corrosive to ceramics, silicon, RTV silicone rubber, gold, tin and Zytel PA66 (alkaline or acidic liquids can destroy AMS 4711) 9) With tubes connected to port 1 and port 2 for differential and bidirectional differential pressure transmitters and with a tube connected to port 2 for absolute and barometric pressure transmitters. FUNCTIONAL DESCRIPTION AMS 4711 uses a piezoresistive silicon chip as sensing element and a mixed-signal integrated circuit (ASIC) for signal conditioning, which are assembled together on a ceramic substrate and housed in a robust plastic package. The physica l pressure , which is applied to the transmitter’s pressure ports is measured at AMS 4711’s piezoresistive pressure sensing element . There the pressure is converted into a differential voltage signal , which is almost proportional to the pressure. This differential voltage signal is converted into a standardized analog output voltage of VOUT = 0 .. 5 V by the signal-conditioning ASIC. The signal-conditioning is done in the following way (see Figure 1): At first the sensing element’s differential voltage signal is pre-amplified and converted into a digital signal using a 14-bit A/D converter (ADC). This digitized pressure signal is processed mathematically by the ASIC’s integrated microcontroller unit. To achieve a cali brated and temperature compensated output signal the microcontroller unit uses individual correction coefficients and a mathematical correction algorithm, which are stored in the ASIC’s EEPROM during AMS 4711’ s factory calibration process . The temperature value needed for the temperature compensation is measured directly at the piezoresistive sensing element, too. To obtain an analog output voltage the corrected digital signal is converted back into an analog voltage by an 11-bit D/A converter (DAC). The standardized output voltage VOUT = 0 .. 5 V (or 2.5 V ± 2.5 V for bidirectional differential types) is a linear function of the applied pressure.1 It is independent of the applied supply voltage. 1 The applied pressure is the pressure difference between port 1 and port 2 for differential and bidirectional differential pressure transmitters. For relative pressure types it is the pressure difference between port 1 and ambient pressure and for absolute and barometric pressure types it is the pressure at port 2 (for the definition of ports see Figure 3). Figure 1: AMS 4711’s block diagram

Miniaturized pressure transmitter with 0 .. 5 V output March 2015 - Rev. 4.0 Page 6/8 www.analogmicro.de DIMENSIONS AND PINOUT Notes: 1) For absolute and barometric pressure transmitters only port 2 is available. 2) Package material is Zytel PA66. 3) The electrical connection is established using an M5 sensor connector series 707 from Binder GmbH. 4) For pressure connections Analog Microelectronics recommends a silicone tubing (inner diameter ØID = 3.2 mm , outer diameter ØOD = 6.4 mm) or a soft PU tubing (ØID = 4 mm, ØOD = 6 mm). 5) If silicone tubing is used, it is recommended to use hose clamps to reduce the risk of leaks. Figure 3: Dimensions and pinout of AMS 4711's package

Miniaturized pressure transmitter with 0 .. 5 V output March 2015 - Rev. 4.0 Page 7/8 www.analogmicro.de INFORMATION FOR ORDERING Ordering code: Pressure range: Pressure range code mbar PSI kPa 0005 5 0.073 0.5 0010 10 0.145 1 0020 20 0.290 2 0050 50 0.725 5 0100 100 1.450 10 0200 200 2.901 20 0350 350 5.076 35 0500 500 7.251 50 1000 1000 14.50 100 1200 1200 17.40 120 2000 2000 29.01 200 Table 4: Pressure ranges Pressure type: Pressure type code Available pressure ranges D differential / relative (gage) 0 .. 5 mbar to 0 .. 2000 mbar D-B bidirectional differential -5 .. +5 mbar to -1000 .. +1000 mbar A absolute 0 .. 1000 mbar and 0 .. 2000 mbar B barometric (absolute) 700 .. 1200 mbar Table 5: Pressure types ADDITIONAL EQUIPMENT ORDER NUMBER DELIVERY FORM AMS4711-CABLE 3-wire cable with mating M5 sensor connector (2 m long) wiring: brown – Vs, blue – OUT, black – GND AMS4711-PU-TUBING matching soft PU-Tubing (please order in m)

Miniaturized pressure transmitter with 0 .. 5 V output March 2015 - Rev. 4.0 Page 8/8 www.analogmicro.de NOTES Analog Microelectronics GmbH reserves the right to amend any dimensions, techni cal data or other information contained herein without prior notification.