MTS Systems Temposonics III Programming Manual page 3

SECTION C -
MODE #2: ZERO & SPAN ADJUSTMENT FOR
DUAL MAGNET PROGRAMMING
C A U T I O N :
When using a dual magnet system, there must be a mini-
mum distance of 3 inches between the the two magnets
at all points along the stroke length of the sensor.
Null
Dual Magnet System
50.8 mm
(2.0 in.)
Magnet Spacing:
76.2 mm (3 in.) minimum
0V 1
• M1a = Magnet 1 @ start of stroke (0 Vdc)
• M1b = Magnet 1 @ end of stroke
• M2a = Magnet 2 @ start of stroke
• M2b = Magnet 2 @ end of stroke (10 Vdc)
In the following procedure, Magnet #1 is the magnet closest to the head of
the sensor.
• Programming Magnet #2
1.) Place Magnet #2 (M2b) at full stroke. Place Magnet #1 (M1a) at the
beginning of the active stroke. Connect a voltmeter across output 2
(yellow & green wires) or an ammeter in series across output 2 (yellow
wire).
2.) Follow Steps 1 - 6 (Section B).
3.) Return Magnet #2 (M2b) to end of active stroke. Note the voltage
should remain at approximately 1.5 V.
• Programming Magnet #1
1.) Place Magnet #1 (M1b) at the end of its active stroke (away from the
head of the sensor). Connect a voltmeter or ammeter across output 1
(gray and pink).
2.) After moving Magnet #1 into the desired position, follow steps 1 - 6 of
Section B.
Dual magnet displacement programming is now complete.
Full Scale Dead Zone
0 to 10 Vdc Dead zone is
stroke dependent,
refer to dimension
drawings for
details.
M1a M2a M1b M2b
Magnet Spacing:
76.2 mm (3 in.) minimum
0 to 10 Vdc
2 3 4 5 6 7 8 9 10 V