LS Series
LS Linear Variable Differential Transformer (LVDT)
The LS Series LVDT Linear Variable Differential Transformer is a highly reliable
linear transformer which provides long-range measurement of turbine valve opening
and casing expansion. It has a broad range of applications due to its durability and
measuring accuracy.
Main Functions
1. Various measurement ranges
The LS Series LVDT comes in nine measuring ranges from 50 to 450mm.
Suitable for long range displacement measurement.
2. High accuracy
Linearity is ±0.2% of full stroke.
Suitable for governor control requiring high accuracy.
3. Environment
Heavy duty specifications and high reliability.
Anti-vibration : 490m/s
2
Operating temperature range : ?40 to +150°C (for terminal block type)
With built-in magnetic shield to eliminate the effect of external magnetic
fields.
Specifications
Stroke 50, 100, 150, 200, 250, 300 350, 400, 450mm
Excitation 3kHz, 5 to 20Vrms
Coil impedance 600? +100? (3kHz)
Linearity ±0.2% of 100% stroke.
±1.5% of 110% stroke.(measured with the test circuit)
Operating temperature ?40 to +125°C (?40 to +248°F REF.) (for connector type)
?40 to +150°C (?40 to +302°F REF.) (for terminal block type)
Insulation resistance 10M? min. at 500VDC between pins and case
Insulation Resistance More than 10M? at 500VDC (between pins and case)
Dielectric strength 500Vrms for one minute (between pins and case)
Shock vibration 490m/s
2
(50g REF.) at 2,000Hz
Magnetic shielding Internal magnetic shielding
Standard cable 3-Wire shielded cable with connector (5m, AWG No.20)