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Home » Products » Rotary and Tilt Sensors » AC RVDT » AC-Operated Rotary Variable Differential Transformers

AC-Operated Rotary Variable Differential Transformers

AC-Operated Rotary Variable Differential Transformers
AC-Operated Rotary Variable Differential Transformers
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Product Code : R36AS
Product Description

RVDTs incorporate a proprietary noncontact design that dramatically improves long term reliability when compared to other traditional rotary devices such as syncros, resolvers and potentiometers. This unique design eliminates assemblies that degrade over time, such as slip rings, rotor windings, contact brushes and wipers, without sacrificing accuracy.

High reliability and performance are achieved through the use of a specially shaped rotor and wound coil that together simulates the linear displacement of a Linear Variable Differential Transformer (LVDT). Rotational movement of the rotor shaft results in a linear change in the output signal, directly proportional to change in shaft angle, over +/-60 degrees from the null position. The phase of this output signal indicates the direction of displacement from the null point. Noncontact electromagnetic coupling of the rotor provides infinite resolution, thus enabling absolute measurements to a fraction of a degree.

Specification :

Specifications

R30A

R36AS

Input Voltage (nominal)

3 V rms

3 V rms

Input Frequency

10 kHz

2.5 kHz

Primary DCR

83.4 Ohms

265 Ohms

Secondary DCR

444 Ohms

1130 Ohms

Operating Temperature Range

-67oF to 300oF (-55oC to 150oC)

-67oF to 300oF (-55oC to 150oC)

Temperature Coefficient of FS

+0.02% of FS/20 to 160oF

+0.02% of FS/20 to 160oF


(+0.04% of FS/-5 to 75oC)

(+0.04% of FS/-5 to 75oC)

Null Voltage

0.5% of full scale output

0.5% of full scale output

Lead Wires

28 AWG, Ptfe insulation,

Mates w/Bendix PTO6A-10-6S


6 wire minimum 12" long


Mounting

Size 11 servo mount BU-ORD

Size 15 servo mount BU-ORD

Bearings

Shielded ABEC 3 precision

Shielded ABEC 3 precision

Shaft Diameter

3/16 in (4.76 mm)

3/16 in (4.76 mm)

Casing Material

Aluminum

Stainless Steel

Mechanical Specifications :

RVDT Model

MOMENT OF INERTIA

MAXIMUM TORQUE

MAXIMUM TORQUE

WEIGHT

SERVO MOUNT

Pound-Inch-Second2

Unbalance

Friction

Unbalance

Friction

Grams

BU-ORD

Inch-Ounces

Inch-Ounces

R30A

0.53 X 10-6

.004

.015

8

10

36

11

R36AS

1.62 X 10-6

.012

.75

25

25

255

15

Electrical Specifications :

RVDT Model

LINEARITY

SENSITIVITY

IMPEDANCE

PHASE ANGLE

(@2.5 kHz)

Percent of range

MV/V/o

Pri

Sec

Degrees

R30A

+30o

+40o

+90o





R36AS

0.25

0.5

1.5

2.3

125

500

+35

(@10 kHz)

0.5

1.0

3.0

2.2

750

2000

+4

R30A

0.25

0.5

1.5

2.9

370

1300

+3

R36AS

0.5

1.0

3.0

1.

2500

5400

-17


JUPITER INTEGRATED SENSOR SYSTEMS PVT. LTD.
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