DS-0009 Datasheet, PDF (5/5 Pages) All Sensors Corporation – DIGITAL OUTPUT PRESSURE SENSORS

Definitions:
Term
[Pressure Range String]
Name
Pressure Range String
[Response String]
[S/N String]
A Fully Formed Response String
Serial Number String
[Temperature Range String] Temperature Range String
[eeee]
Error Codes
{null}
Null Response
Description
This is the compensated pressure range of the part.
Syntax: [low limit]<sp>”to”<sp>[high limit]<sp>[units}[mode]
Esample: 20 to 32 mmHgA
Where:
Low limit = 20
High limit = 32
Units = mmHg
Mode = A (absolute pressure) (D differential and G gage
pressure also available.)
Example: “RL=1E43<sp>0000<cr>
YMDD-NN-BSPP (12 character String)
Where:
Y : Year (0~9)
M : Month (A~M, excluding I)
DD: Day of Month
NN: Lot (lot sequence for a given day)
B : Lot Batch# (A~Z)
S : Test Oven Slot# (1~5)
P : Position on Slot (1~15)
Example: 3D23-03-A103
Month Codes
January : A
February : B
March : C
April :D
May
:E
June
:F
July
:G
August :H
September : J
April 23, 2003
3rd lot of the day
Batch A, Slot 1, Position 03
October : K
November : L
December : M
This allows traceability to original test data
This is the compensated temperature range of the part.
Syntax: [low limit]<sp>[high limit]<sp>”C”
Example: -20 to 85 C
-40 to 125 C and custom ranges also available.
The error codes are bits packed within a double byte.
The four character string is an ascii hex expression.
The error code bits are:
Bit 0 : Part not factory compensated
Bit 1 : Tdex Overflow
Bit 2 : Tdex Over-range
Bit 3 : Pdex Overflow
Bit 4 : Pdex Over-range
Bit 5 : PWL Overflow
Bit 6 : Scale Overflow
Bit 7 : High Resolution Overflow
Bit 8 : Pressure Output Limited to Specific Value
Bits 9 through 15 : Reserved
Example: 0100
Represents error bit 8 set and the Pressure Output Limited
Notes:
Bit 0 : This should not appear if the part has been calibrated
Bits 1 thru 7 : indicate computational error when compensated
Bit 8: indicates that the pressure applied to the part exceeds the
range of the part and is limit to either the high or low limit
No response from the part. In the event of a serial number
mismatch the part will not respond (to avoid buss contention.)
Specification Notes
NOTE 1:
NOTE 2:
NOTE 3:
NOTE 4:
NOTE 5:
UNLESS OTHERWISE SPECIFIED, ALL PARAMETERS ARE MEASURED AT 5.0 VOLT SUPPLY, POSITIVE PRESSURE APPLIED TO PORT B.
THE DIGITAL OUTPUT IS A 16 BIT SIGNED BINARY OUTPUT IN A TWO’S COMPLIMENT FORMAT. THE APPLIED PRESSURE IS COMPUTED USING THE PRESSURE CONVERSION
TABLE (BELOW). THE MODE COLUMN IDENTIFIES THE RESOLUTION OPERATING MODE OF THE DEVICE (A = STANDARD RESOLUTION, B = HIGH RESOLUTION). FSO AND
UNITS ARE SHOWN FOR EACH MODEL.
SHIFT IS WITHIN THE FIRST HOUR OF EXCITATION APPLIED TO THE DEVICE.
DIGITAL SPAN IS DEPENDENT ON THE RESOLUTION OPERATING MODE. REFER TO THE DIGITAL SPAN TABLE (BELOW) TO IDENTIFY THE DIGITAL SPAN OF THE SPECIFIC
MODEL. IN THE EVENT OF AN OVER-PRESSURE OR UNDER-PRESSURE CONDITION, THE DIGITAL OUTPUT WILL ONE COUNT HIGHER OR ONE COUNT LOWER (RESPECTIVELY) TO
THE LISTED DIGITAL SPAN TO INDICATE THE CONDITION.
OVERALL ACCURACY INCLUDES THE COMBINED EFFECTS OF OFFSET AND SPAN SHIFTS OVER TEMPERATURE, LINEARITY, HYSTERESIS, AND OFFSET AND SPAN CALIBRATION.
All Sensors
DS-0009 Rev A