DISPLACEMENT
ACT LVDT Displacement Transducer
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High accuracy
High cycle life
Infinite resolution
Stainless steel
These transducers are for displacement / position measurement. They make an accurate position measurement of the movement of the armature
(the sliding part) relative to the body of the displacement transducer.
This transducer uses the Linear Variable Differential Transformer (LVDT) principle which means that it is probably the most robust and reliable
position sensor type available. The strength of the LVDT sensor's principle is that there is no electrical contact across the transducer position
sensing element which for the user of the sensor means clean data, infinite resolution and a very long life.
This series of displacement transducer is available as either an unguided, captive or spring return version.
On our unguided LVDTs the armature assembly is a
separate component, to make a measurement the user
must guide the armature inside the body without touching
the sides. Unguided position measurement transducers
are appropriate where external guidance is available and
give truly non-contact operation
Unguided version.
X
L
0.81''
0.35''
0.235''
-FS
0
+FS
0.268''
M5x0.8
TF
Linearity error (%
F.S.)
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25
<±0.5/±0.25
0.187''
Type
Range
ACT500
ACT1000
ACT2000
ACT3000
ACT4000
ACT6000
ACT8000
±12.5mm (±0.5'')
±25mm (±1'')
±50mm (±2'')
±75mm (±3'')
±100mm (±4'')
±150mm (±6'')
±200mm (±8'')
L
X (nom)
Total weight
5.00''
6.10''
10.63''
14.96''
16.81''
24.29''
31.81''
1.7''
2.7''
3.2''
4.7''
5.2''
7.2''
10.2''
6.0oz
8.0oz
11.3oz
1.0lb
1.3lb
1.8lb
2.6lb
0.81''
-FS
0.43''
D3
L
Type
Range
ACT500C
ACT1000C
ACT2000C
ACT3000C
ACT4000C
ACT6000C
ACT8000C
ACT10000C
ACT15000C
ACT18500C
±12.5mm (±0.5'')
±25mm (±1'')
±50mm (±2'')
±75mm (±3'')
±100mm (±4'')
±150mm (±6'')
±200mm (±8'')
±250mm (±10'')
±380mm (±15'')
±470mm (±18.5'')
20160308 - 1/2
0
TF
Inward over-travel
Sensitivity (nom)
0.59''
0.59''
0.59''
0.59''
0.59''
0.59''
1.15''
0.6''
0.9''
0.6''
1.1''
0.6''
0.6''
1.1''
0.7V/V
0.9V/V
1.5V/V
1.5V/V
3.2V/V
2.4V/V
1.5V/V
Our captive guided displacement transducer has bearings
to guide the armature inside the measurement sensor.
Captive LVDTs are for position measurement applications
where guidance may be poor and end bearings may be
required.
Captive guided version.
0.94''
Armature
weight
0.60oz
0.81oz
1.31oz
1.94oz
2.50oz
3.53oz
4.94oz
+FS
TF M5x0.8
X
Linearity error (%
F.S.)
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25
<±0.5/±0.25
<±0.5/±0.25
<±0.5
<±0.5
L
X (nom)
D3
Total weight
TF
Inward over-travel
Outward over-travel
5.98''
7.09''
11.61''
15.98''
17.80''
25.31''
32.80''
40.55''
56.50''
67.01''
1.5''
2.5''
3.0''
4.5''
5.0''
7.0''
10.0''
12.0''
16.0''
20.0''
0.187''
0.187''
0.187''
0.187''
0.187''
0.187''
0.187''
0.187''
0.187''
0.236''
10.0oz
12.0oz
1.1lb
1.4lb
1.6lb
2.3lb
3.1lb
3.5lb
4.7lb
5.6lb
0.59''
0.59''
0.59''
0.59''
0.59''
0.59''
1.25''
1.05''
0.75''
1.05''
0.4''
0.5''
0.4''
0.9''
0.3''
0.5''
0.9''
1.3''
0.5''
0.2''
0.47''
0.39''
0.55''
0.59''
0.55''
0.67''
0.98''
1.38''
0.51''
1.30''
Position
Pressure
Load Cells
Displacement
Instrumentation
Special Custom Designs
www.rdpe.com/us/act.pdf
Our spring displacement transducer has bearings to
guide the armature inside the measurement sensor and a
spring which pushes the armature to the fully out position.
Spring return LVDTs are appropriate where it is not
possible to connect the transducer armature to the
moving component being measured.
Spring return version.
-FS
0.35''
0
+FS
0.81''
0.187''
L
X
Type
Range
ACT500A
ACT1000A
ACT2000A
ACT3000A
±12.5mm (±0.5'')
±25mm (±1'')
±50mm (±2'')
±75mm (±3'')
Specification
Excitation/supply (acceptable)
Excitation/supply (calibrated)
Output load
Temperature coefficient (span)
Operating temperature range
Electrical termination
Linearity error (%
F.S.)
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
<±0.5/±0.25/±0.1
L
5.25''
6.35''
10.85''
15.25''
X
(nom)
1.5''
2.5''
3.0''
4.5''
Total
weight
6.5oz
8.0oz
14.0oz
1.1lb
Spring force
at X
5oz
7oz
6oz
1lbs
Spring
rate
2oz/inch
3oz/inch
2oz/inch
3oz/inch
Inward overtravel
0.04''
0.1''
0.3''
0.6''
Outward overtravel
0.51''
0.39''
0.55''
0.59''
Sensitivity
(nom)
0.7V/V
0.9V/V
1.5V/V
1.5V/V
0.5V to 7V rms, 2kHz to 10kHz (sinusoidal)
5V rms, 5kHz (sinusoidal)
100k Ohms
±0.006% F.S. /°F (typical)
-58°F to 257°F
6.6ft (integral cable) Longer available to order.
Due to our policy of on-going development, specifications may change without notice. Any modification may affect some or all of
the specifications for our equipment. All dimensions and specifications are nominal.
RDP Electrosense
2216 Pottstown Pike
Pottstown, PA 19465
USA
Tel: 610-469-0850
Tel: 800-334-5838
Fax: 610-469-0852
Email: [email protected]
20160308 - 2/2
Position
Pressure
Load Cells
Displacement
Instrumentation
Special Custom Designs
www.rdpe.com/us/act.pdf