DA79005_000.doc

May 07, 2009

4/5

000790051447

ECN 1186

ELECTRICAL CHARACTERISTICS

(Reference conditions: Supply Voltage VS+ = 5 Vdc; Ambient Temperature Ta = 25°C )

Parameter

Min

Typ

Max

Unit

Notes

Operating Pressure Range

0

0.5

Bar

Operating Temperature Range

-40

125

°C

Bridge Resistance

3.0

3.4

3.8

KΩ

1

Full-scale span (FS)

120

150

180

mV

Zero Pressure Offset

-40

0

40

mV

Linearity

± 0.05

± 0.2

% FS

2

Temperature Coefficient of Resistance

Span

Offset

+ 2400

- 1500

- 80

+ 2800

- 1900

+ 3300

- 2300

+ 80

ppm/°C

ppm/°C

µV/°C

3, 1

Pressure Hysteresis

± 0.05

± 0.15

% FS

4

Repeatability

± 0.05

± 0.15

% FS

5

Temperature Hysteresis

0.3

% FS

6

NOTES

1) Reference Resistors R5 and R6 have the same specifications as the bridge resistances.

2) Deviation at one half full-scale pressure from the least squares best line fit over pressure range (0 to 0.5 bar).

3) Slope of the endpoint straight line from 25°C to 60°C.

4) Output deviation at any pressure within the specified range, when this pressure is cycled to and from the

minimum or maximum rated pressure, at 25°C.

5) Same as 4) after 10 pressure cycles

6) Maximum difference in offset after one thermal cycle from -40°C to +125°C.

PICKING TOOLS

The MS79005 sensors have a sensitive membrane size of 0.74 x 0.74 mm and outer dimensions of

1.78 x 1.78 mm (MS79005-A_0.2, MS79005-A_0.5 and MS79005-D) and 1.81 x 1.81 mm (MS79005-S). The

pick and place tool has to be of a soft material such as rubber (Hardness 78-97 Shore A). Its external size must

fit the sensor and the vacuum cavity must be as large as the membrane itself. Successful tests have been made

with specific SPT tools, see SPT drawing and references below.

Ensure that the ejection pins do not touch the membrane for gauge versions.

SPT references

RTR-A1-060x060

External dimension

TL & TW: 0.06 inch /1.52 mm

Internal dimensions

∅

H: 0.035 inch / 0.89 mm