Pressure Sensors

140PC Series

Absolute, Differential, Gage, Vacuum Gage/Amplified

Honeywell Sensing and Control 1-800-537-6945 USA

1-815-235-6847 International 1-800-737-3360 Canada

39

ELECTRICAL CONNECTION

Voltage Excitation

NOTES

1. Terminals are labeled on the sensor.

2. Input and output share a common

ground.

3000 ohms.

INTERNAL CIRCUITRY

RATIOMETRICITY

Ratiometricity refers to the output voltage

being directly proportional to the supply

voltage.140PC sensors in this catalog are

calibrated at 8 VDC supply voltage to pro-

vide a1-6 volt (5V Span) output swing. For

example, if supply increases by 50% to 12

VDC, the output voltage increases by

50% to 1.5-9 volts (7.5 V Span).

NOTE

The output is not perfectly ratiometric.

See specifications for the degree of error.

NULL AND SENSITIVITY

TEMPERATURE SHIFT

Amplified pressure sensors are 100%

tested to insure that the maximum null

and sensitivity temperature shift does not

exceed the specification. The diagram

below illustrates how null and sensitivity

shift relates to temperature. Note that the

maximum shift occurs at temperature ex-

tremes. Therefore, if a sensor is not ex-

posed to the entire temperature range,

the maximum null and sensitivity shift will

actually be less than the value specified.

This diagram indicates the temperature

shift pertaining to a few listings. Maximum

null and sensitivity shift varies from listing

to listing.

SCALING OF 140PC SERIES SENSORS WITH 8V EXCITATION

142PC15A

Absolute

1 V at 0 psia & 6 V at 15 psia

142PC30A

Absolute

1 V at 0 psia & 6 V at 30 psia

142PC15G

Gage

1 V at 0 psig & 6 V at 15 psig

141PC15G

Vacuum Gage

1 V at 0 psig & 6 V at −15 psig

143PC05D

Differential

1 V at −5 psig & 6 V at 5 psig

143PC15D

Differential

1 V at −15 psig & 6 V at 15 psig

NOTE: 141PC sensors are scaled for vacuum pressure on P2.

142PC sensors are scaled for greater pressure on the P2 side of the chip. Input pressures on

absolute units are applied to the P1 port.

Other scalings available upon request.