The DC-SE Series has been designed to meet today’s requirements for operation from a single ended power supply. The output is also single ended over the full range displacement of the LVDT making the unit compatible with unipolar inputs on analog-to-digital converters and programmable logic controllers, etc. The DC-SE design features internal regulation which provides immunity from line ripple and allows operation from an unregulated 8.5 to 28 VDC supply. The DC-SE current draw is 6 mA (typical), making remote or portable operation from batteries possible. The incorporation of a new high stability oscillator provides improved temperature stability, while the synchronous demodulator insures excellent noise rejection. The electronics design uses surface mount technology to keep costs and size of the unit to a minimum. Built-in EMI/ESD protection and shielded cable allows operation in industrial environments. The DC-SE meets CE requirements.
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SpecificationsDC-SE
|
Supply voltage: |
+8.5 … +28 VDC |
|
Input current: |
<10 mA (typical 6 mA) |
|
Line regulation: |
<1 mV/V (typical 0.2 mV/V) |
|
Operating temperature range: |
-25 … +85 °C |
|
Storage temperature range: |
-55 … +125 °C |
|
Output signal: |
0 … 5 V (4-wire), 1 … 6 V (3-wire) |
|
Ripple and noise: |
<10 mVrms |
|
Linearity: |
0.25 % full range |
|
Stability: |
0.125 % full scale |
|
Temperature coefficient of scale factor, max.: |
0.05 %/K |
|
Shock survival: |
250 g for 11 ms |
|
Vibration tolerance: |
10 g up to 2 kHz |
|
Housing material: |
AISI 400 stainless steel |
|
Electrical connection: |
4 conductor, 28 AWG, stranded copper with braided shield and PU jacket, 1 m |
|
EMC |
CE certified (The DC-SE series, when correctly installed, comply with the EMC Directive 89/336/EEC |
|
Output impedance |
<1 Ω |
Performance and Electrical Specificationsat room ambient temperature
| Modellnummer | Messbereich, nom. | Empfindlichkeit | Dyn. Bereich | ||
|---|---|---|---|---|---|
|
Inch |
mm |
V/inch |
V/mm |
Hz (-3 dB) |
|
|
100 DC-SE |
0 … 0.100 |
0 … 2.5 |
50 |
2.00 |
200 |
|
250 DC-SE |
0 … 0.250 |
0 … 6.25 |
20 |
0.80 |
200 |
|
500 DC-SE |
0 … 0.500 |
0 … 12.5 |
10 |
0.40 |
200 |
|
1000 DC-SE |
0 … 1.000 |
0 … 25 |
5 |
0.20 |
200 |
|
2000 DC-SE |
0 … 2.000 |
0 … 50 |
2.5 |
0.10 |
200 |
|
4000 DC-SE |
0 … 4.000 |
0 … 100 |
1.25 |
0.05 |
200 |
|
6000 DC-SE |
0 … 6.000 |
0 … 150 |
0.83 |
0.03 |
200 |
Mechanical Specification
All dimensions in inches, values in brackets in mm, approx. values. These drawings are for information only and not intended for construction purpose. Please ask for detailed drawings.
| Model number | Weight, approx. | Dimensions, approx. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Body |
Core |
A |
B |
C |
P |
||||||||
|
oz |
g |
oz |
g |
inch |
mm |
inch |
mm |
inch |
mm |
inch |
mm |
||
|
100 DC-SE |
2.54 |
72 |
0.035 |
1 |
3.51 |
89.2 |
0.59 |
14.9 |
1.21 |
30.7 |
0.51 |
13.0 |
|
|
250 DC-SE |
3.21 |
91 |
0.11 |
3 |
4.36 |
110.7 |
1.10 |
27.9 |
2.06 |
52.2 |
0.93 |
23.6 |
|
|
500 DC-SE |
3.39 |
96 |
0.18 |
5 |
5.20 |
132.1 |
1.80 |
45.7 |
2.91 |
73.8 |
1.35 |
34.3 |
|
|
1000 DC-SE |
4.38 |
124 |
0.28 |
8 |
6.89 |
175.0 |
3.00 |
76.2 |
4.59 |
116.7 |
2.20 |
55.9 |
|
|
2000 DC-SE |
6.25 |
177 |
0.35 |
10 |
8.87 |
225.3 |
3.80 |
96.5 |
6.57 |
166.8 |
3.19 |
81.0 |
|
|
4000 DC-SE |
8.33 |
236 |
0.53 |
15 |
12.25 |
311.2 |
5.30 |
134.6 |
9.95 |
252.8 |
4.88 |
124.0 |
|
|
6000 DC-SE |
10.48 |
297 |
0.64 |
18 |
17.30 |
439.4 |
6.20 |
157.5 |
15.06 |
382.5 |
7.56 |
192.0 |
|
Block Diagram and Wiring
Captive Core Option
The DC-SE features a captive core design that greatly simplifies installation. The design utilizes a core rod and bearing assembly that is captured and guided within the LVDT providing low friction travel throughout the stroke length. The assembly incorporates two Delrin bearings on the core rod traveling through the stainless steel boreliner. A bronze bearing on the front end utilizes a self-aligning feature to accommodate lateral LVDT movement during operation, the core rod and bearing assembly is field replaceable.
Dimensions in inches, approx. values. These drawings are for information only and not intended for construction purpose.
| Model number | Linear range | Weight | Dimensions, approx. | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
A |
P |
R |
||||||||
|
in |
mm |
oz |
g |
in |
mm |
in |
mm |
in |
mm |
|
|
100 DC-SE |
0 … 0.100 |
0 … 2.5 |
1.52 |
43 |
385 |
97.8 |
0.85 |
21.6 |
3.69 |
93.7 |
|
250 DC-SE |
0 … 0.250 |
0 … 6.25 |
4.09 |
116 |
4.70 |
119.4 |
1.27 |
32.3 |
4.28 |
108.7 |
|
500 DC-SE |
0 … 0.500 |
0 … 12.5 |
4.34 |
123 |
5.54 |
140.7 |
1.69 |
42.9 |
4.75 |
120.7 |
|
1000 DC-SE |
0 … 1.000 |
0 … 25 |
5.51 |
156 |
7.23 |
183.6 |
2.54 |
64.5 |
6.04 |
153.4 |
|
2000 DC-SE |
0 … 2.000 |
0 … 50 |
7.62 |
216 |
9.21 |
233.9 |
3.53 |
89.7 |
7.90 |
200.7 |
|
4000 DC-SE |
0 … 4.000 |
0 … 100 |
10.13 |
287 |
12.59 |
319.8 |
5.22 |
132.6 |
10.52 |
267.2 |
|
6000 DC-SE |
0 … 6.000 |
0 … 150 |
12.92 |
366 |
17.64 |
448.1 |
7.90 |
200.7 |
15.27 |
387.9 |
Ordering Information
Specify the DC-EC Model followed by the desired option number(s) added together.
Example: Model 050DC-SE-206 is a DC-SE series LVDT with a ±1.25 mm range (050DC-SE), with captive core option (200) and metric thread core (006)
| Option number | Description |
|---|---|
|
006 |
metric threaded core |
|
010 |
guided core |
|
020 |
Small diameter/low mass core (1) |
|
200 |
captive core |
(1) Mass, dimensions and thread size on request
