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DC005NGC4 Schematic ( PDF Datasheet ) - ETC

Teilenummer DC005NGC4
Beschreibung Ultra Low Pressure Sensors
Hersteller ETC
Logo ETC Logo 




Gesamt 12 Seiten
DC005NGC4 Datasheet, Funktion
OCTOBER 1997
SURSENSEUltra Low Pressure Sensors
DCAL4 Series
Ratiometric 4-Volt Output
High Accuracy Compensation
Full Scale Pressure Ranges
0 to 1 in. H2O to 0 to 30 in. H2O
±0 to ±1 in. H2O to ±0 to ±30 in. H2O
DESCRIPTION
The SURSENSE™ line of ultra low pressure sensors is based
upon a proprietary, patent applied for technology designed
to reduce all output offset or common mode errors.
These sensors utilize a silicon, micromachined sensing element
which features a unique stress concentration enhanced
structure to provide a highly stable linear output that is
proportional to applied pressure. Output offset errors due to
changes in temperature, warm-up, long term stability and
position sensitivity have all been significantly reduced when
compared to conventional sensors.
The DCAL series sensors provide a precision calibrated
ratiometric 4 -volt output with SURSENSE enhanced stability.
Each sensor features the precision calibration found in the
DCX series with the addition of fully integrated signal
conditioning in an industry standard package. Intended to
operate from a fixed 5Vdc supply, the DCAL4 gage pressure
sensors provide a 0.25v to 4.25v output while the differential
versions provide a ±2.0 volt output centered on a 2.25 volt
zero pressure offset. These highly stable sensors are ideally
suited for microprocessor or microcontroller based systems.
APPLICATIONS
s Medical Instrumentation
s HVAC
s Environmental Controls
s Portable Monitors
FEATURES
s Available in Gage and Differential
Pressure Ranges
s Temperature Compensated over 0°C to 50°C
s Position Sensitivity to ±5mV/g
s Warm-up drift < ±5mV
s Long Term Stability < ±10mV
s Combined Linearity and Hysteresis Error
< ±0.25%FS
s Custom Calibration Available
EQUIVALENT CIRCUIT
+
VEXCITATION (1)
VOUTPUT (3)
VOFFSET (4)
Common (2)
PINOUT
1
2
3
4
VEXCITATION
Common
VOUTPUT
VOFFSET






DC005NGC4 Datasheet, Funktion
DCAL Series
SURSENSEUltra Low Pressure Sensors
DCAL410GN
Ratiometric 4-Volt Output
High Accuracy Compensation
10 in. H2O Full Scale Pressure
MAXIMUM RATINGS
PARAMETER
Operating Temperature Range
Storage Temperature
Proof Pressure
Burst Pressure
Output Source Current
Output Sink Current
Excitation Voltage
Common Mode Pressure
MINIMUM
–25
–40
150
300
MAXIMUM
85
125
UNITS
°C
°C
in. H2O
in. H2O
3 16
V
50 psig
ELECTRICAL SPECIFICATIONS
PARAMETER, note 1
Operating Pressure Range, gage pressure
Output Span, note 2
Offset Voltage
Temperature Effect on Offset (0°C–50°C), note 3
Combined Temperature Effect on Span (0°C–50°C),
note 3
Offset Warm-up shift, note 4
Offset Position Sensitivity (±1g)
Offset Long Term Drift (one year)
Combined Linearity and Hysteresis Error, note 5
MINIMUM
3.9
0.15
NORMAL
10.0
4.0
0.25
±3
MAXIMUM
4.1
0.35
±20
±1
±5
±1
±10
0.05 0.25
Note 1: Reference conditions (unless otherwise noted): Supply Voltage, VS = 5VDC, TA = 25°C, Common Mode Line Pressure = 0 psig.
Pressure measurements are with pressure applied to Port B.
Note 2: The voltage added to the offset voltage at full scale pressure. Nominally the output voltage range is 0.25 to 4.25 volts.
Note 3: Shift is relative to 25°C.
Note 4: Shift is within the first hour of excitation applied to the device.
Note 5: Measured at one-half full scale rated pressure using best straight line curve fit.
UNITS
in. H2O
V
V
mV
%Span
mV
mV
mV
%FS

6 Page









DC005NGC4 pdf, datenblatt
DCAL Series
SURSENSEUltra Low Pressure Sensors
APPLICATIONS INFORMATION
MEDIA CAPABILITY, WETTED MATERIALS
(Apply clean dry air only)
Pressure Port B Silicon diaphragm, glass filled nylon, and
(High) alumina ceramic. Pressure measuring port.
Pressure Port A Silicon diaphragm, glass filled nylon,
(Low) and alumina ceramic. The vent port.
Pressure Compatibility:
Measures differential or gage pressure only with positive
pressure to port B. There will be a small output voltage
between the actual offset voltage and ground proportional
to vacume if applied to port B.
Ratiometric Output:
The output voltage of the sensor is ratiometric,
proportional, to the excitation voltage. For this model
sensor all specifications will change proportionally to any
changes in the excitation voltage. The excitation may vary
between 3 to 16 volts. All specifications will nominally be
change by a ratio of VEXCITATION/5.0 volts. For example: if
the excitation voltage is 3.0 volts then both the full scale
output voltage and the offset voltage would be 3/5th the
specified value.
MOLDED PACKAGE DIMENSIONS
0.25
(0.64)
1.08
(27.4)
0.014 x 0.020 4 places for
(0.0356 x 0.050) electrical connection
0.190
(4.8)
0.40
(10.0)
0.48
(12.2)
0.55
(14.0)
PINOUT:
1) VEXCITATION
2) Common
3) VOUTPUT
4) VOFFSET
Rivet
mounting
0.14 (3.6),
typical
Dimensions in inches (mm)
0.10 typical
(2.54)
Pin 1 2 3 4
1
A
0.41
(10.4)
B
0.80
(20.3)
0.85
(21.6)
1.10
(27.9)
Ordering Information
MODEL NO. PACKAGE TYPE
DCAL401GN
DCAL401DN
DCAL405GN
DCAL405DN
DCAL410GN
DCAL410DN
DCAL420GN
DCAL420DN
DCAL430GN
DCAL430DN
1 in. H2O F. S.
±1 in. H2O F. S.
5 in. H2O F. S.
±5 in. H2O F. S.
10 in. H2O F. S.
±10 in. H2O F. S.
20 in. H2O F. S.
±20 in. H2O F. S.
30 in. H2O F. S.
±30 in. H2O F. S.
An ISO9001 Certified Facility
1253 Reamwood Avenue
Sunnyvale, CA 94089
1-800-333-3282
©1997 Data Instruments, The Data Instruments logo, and Sursense are trademarks of Data Instruments. Item #1114900. G&E, CA
10/13/97

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