Version 4 SHEET 1 932 900 WIRE -304 144 -320 144 WIRE -320 160 -320 144 WIRE -48 160 -112 160 WIRE 48 160 32 160 WIRE 80 160 48 160 WIRE 192 160 160 160 WIRE 416 160 352 160 WIRE 512 160 496 160 WIRE 544 160 512 160 WIRE 656 160 624 160 WIRE -112 176 -112 160 WIRE 352 176 352 160 WIRE -320 256 -320 240 WIRE -48 320 -112 320 WIRE 48 320 48 160 WIRE 48 320 32 320 WIRE 64 320 48 320 WIRE 416 320 352 320 WIRE 512 320 512 160 WIRE 512 320 496 320 WIRE 528 320 512 320 WIRE 192 336 192 160 WIRE 192 336 128 336 WIRE 224 336 192 336 WIRE 656 336 656 160 WIRE 656 336 592 336 WIRE 688 336 656 336 WIRE -336 352 -400 352 WIRE -272 352 -288 352 WIRE 64 352 48 352 WIRE 528 352 512 352 WIRE 48 368 48 352 WIRE 512 368 512 352 WIRE -400 384 -400 352 WIRE -288 384 -288 352 WIRE -336 400 -336 352 WIRE -336 464 -336 448 WIRE -288 464 -336 464 WIRE -400 480 -400 464 WIRE -288 480 -288 464 FLAG -400 480 0 FLAG -400 352 sensor FLAG -320 256 0 FLAG -304 144 out1 FLAG 224 336 out2 FLAG -112 160 ref1 FLAG -112 256 0 FLAG 48 368 0 FLAG 352 320 is FLAG 688 336 out3 FLAG 352 160 ref2 FLAG 352 256 0 FLAG 512 368 0 FLAG -288 480 0 FLAG -272 352 is FLAG -112 320 is SYMBOL bv -400 368 M0 SYMATTR InstName B1 SYMATTR Value V=0.131*Pressure + 0.183 SYMBOL bv -320 144 M0 SYMATTR InstName B2 SYMATTR Value V=7.63*V(sensor) - 1.40 SYMBOL Opamps\\opamp 96 272 R0 SYMATTR InstName U1 SYMBOL res 48 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 100K SYMBOL res 176 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1.285Meg SYMBOL voltage -112 160 M0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 24 19 Left 2 SYMATTR InstName V1 SYMATTR Value 1 SYMBOL res -64 336 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 168.3K SYMBOL Opamps\\opamp 560 272 R0 SYMATTR InstName U2 SYMBOL res 512 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 915.6K SYMBOL res 640 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 1.285meg SYMBOL voltage 352 160 M0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 24 19 Left 2 SYMATTR InstName V2 SYMATTR Value 1 SYMBOL res 400 336 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R4 SYMATTR Value 168.3K SYMBOL e2 -288 480 M180 SYMATTR InstName E1 SYMATTR Value 1 TEXT -24 480 Left 2 !.step param Pressure -10 10 0.1 TEXT 328 480 Left 2 !.op TEXT -224 480 Left 2 !.inc opamp.sub TEXT -16 416 Left 3 ;spec Version 1 TEXT 416 416 Left 3 ;Fixed Spec Ver 1. TEXT -248 408 Left 2 ;Inverts the \nsensor output TEXT -424 288 Left 3 ;Desired Output