ICSENSORS 1451 User Manual

Model 1230 UltraStable™

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PC Board Mountable Pressure Sensor

þ Medical Instrumentation

þ Calibration

0-100 mV Output

Absolute, Differential, and Gage

Wide Temperature Range

FEATURES

þ -20

þ ±

C to +85°C Compensated

°

Temperature Range

0.1% Non-linearity

þ Process Control

þ Factory Automation

þ Air Flow Management

þ Leak Detection

DESCRIPTION

The Model 1230 is a high performance temperature

compensated, piezoresistive silicon pressure sensor packaged in

a dual-in-line configuration. It is intended for cost sensitive

applications where excellent performance and long-term

stability are required.

Integral temperature compensation is provided over a range

of -20°C to +85°C using laser-trimmed thick film resistors. An

additional laser-trimmed resistor is included to normalize

pressure sensitivity variations, for interchangeability of ±1%, by

programming the gain of an external differential amplifier.

Differential and gage pressure ranges from 0-15 PSI to

0-100 PSI are available. Absolute pressure ranges of 0-15 PSIA

to 0-30 PSIA are available. Multiple lead and tube

configurations are available for different applications.

Please refer to the low pressure section for information on

products with operating pressures less than 0-2 PSI. For a

compensated sensor using a current set resistor as opposed to a

gain set resistor, please refer to the Model 1240.

0.5% Temperature Performance

þ ±

þ 1.0% Interchangeable Span

DIMENSIONS

(provided by gain set resistor)

þ Solid State Reliability

þ Low Power

STANDARD RANGES

Range psig psid psia

0 to 15

0 to 30

0 to 50

0 to 100

1-18 HITs – Wide Temperature Range

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PC Board Mountable Pressure Sensor Model 1230 UltraStable™

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PERFORMANCE SPECIFICATIONS

Supply Current: 1.5mA

Ambient Temperature: 25°C (Unless otherwise specified)

PARAMETERS MIN TYP MAX UNITS NOTES

Full Scale Output Span, (without gain set resistor) 75 100 150 mV 1

Zero Pressure Output 2±mV3

Pressure Non-linearity 0.05 0.1 ±% Span 2

Pressure Hysteresis 0.01 0.1 ±% Span
Input Resistance 2500 3500 4500 Ω

Temperature Error – Span 0.3 0.5 ±% Span 3, 4

Temperature Error – Zero 0.1 0.5 ±% Span 3, 4

Temperature Coefficient - Resistance 0.145 %/°C 4

Thermal Hysteresis – Zero 0.05 ±% Span 4

Short Term Stability of Offset 0.05 ±% Span 14

Short Term Stability of Span 0.05 ±% Span 14

Long Term Stability of Offset 0.1 ±% Span 15

Long Term Stability of span 0.1 ±% Span 15

Supply Current 0.5 1.5 2.0 mA 5

Response Time (10% to 90%) 1.0 msec 6

Output Noise 1.0 µV p-p 7

Output Load Resistance 5 M

Insulation Resistance (50 VDC) 50 M

Pressure Overload 3X Rated 9

Operating Temperature –40°C to +125°C

Storage Temperature –50°C to +150°C

Media Non-corrosive Gases Compatible with Wetted Materials 10

Weig ht 3 Grams

Notes

1. Output span of unamplified sensor.

2. Best Fit Straight Line.

3. For Model 1230, compensation resistors are an integral part of the
sensor package; no additional external resistors are required. Pins 7 and
8 must be kept open.

4. Temperature range: -20°C to +85°C in reference to 25°C.

5. Guarantees input/output ratiometricity.

6. For a zero-to-full scale pressure step change.

7. 10 Hz to 1kHz.

8. Prevents increase of TC–Span due to output loading.

9. 3X or 200 psi maximum, whichever is less. 20 psi for 2 psi and 5 psi
versions.

10. Wetted materials are glass, ceramic, silicon, RTV, nickel, and aluminum.

11. Soldering of lead pins: 250°C for 5 seconds, maximum.

12. Tube length: L=470 ± 5 mil, S=300 ± 3 mil, N=no tube.

13. Lead pins can either be in the same or the opposite direction as the
pressure tube. See Connections/Dimensions drawing for lead
configurations.

14. Normalized offset bridge voltage: 7 days.

15. 1 year.

Ω
Ω

8

CONNECTIONS ORDERING INFORMATION

1230 - 015 G - 3 S

APPLICATION SCHEMATIC

HITs – Wide Temperature Range 1-19

Pressure Tubes (L, S, N - see note 12)

Lead Configuration (1, 3 - see note 13)

Type (G = Gage, A = Absolute, D = Differential)

RangePressure

Model

April 2000