S7TW, 4-20mA loop powered LVDT Transducer Amplifier
The S7TW is a two-wire, 4-20mA-output oscillator/demodulator for use with LVDT transducers having suitable primary impedance. Coarse and Fine controls for gain and zero (4mA) allow use with the full range of RDP transducers and a filter...
Features:
- In-line Amplifier
- 2-Wire 4-20mA-output oscillator/demodulator
- Compatible with most standard RDP LVDT (without integral electronics) transducers
- Compatible with most LVDTs from any manufacturer
- Simple controls for gain and zero adjustment
- Electrical output bandwidth: 0 to 250Hz (25Hz with filter turned on)
- High environmental protection, IP 65
- Limit trips
Manufacturer: RDP Electrosense
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Datasheet
Description
Specifications
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S7TW - Description
The S7TW is a two-wire, 4-20mA-output oscillator/demodulator for use with LVDT transducers having suitable primary impedance.
Coarse and Fine controls for gain and zero (4mA) allow use with the full range of RDP transducers and a filter switch allows selection of optimum bandwidth/noise. The differential signal amplifier circuit allows the use of long transducer cables.
The two-wire supply/output system allows use with long cables from the supply/monitor with a wide range of supply voltage and high noise immunity.
In order to meet the primary impedance requirements of the S7TW, some RDP transducers are modified to TM202.
Note: The S7TW is not suitable for use with differential or half-bridge transducers.
Coarse and Fine controls for gain and zero (4mA) allow use with the full range of RDP transducers and a filter switch allows selection of optimum bandwidth/noise. The differential signal amplifier circuit allows the use of long transducer cables.
The two-wire supply/output system allows use with long cables from the supply/monitor with a wide range of supply voltage and high noise immunity.
In order to meet the primary impedance requirements of the S7TW, some RDP transducers are modified to TM202.
Note: The S7TW is not suitable for use with differential or half-bridge transducers.
S7TW - Specifications
| Input Type | LVDT |
| # of Inputs | 1 |
| Output Type | 4 - 20 mA |
| Max Bandwidth | 250 Hz |
| Excitation | 0.5 V AC |
| Isolation | No |
| Supply Power | 12 - 36 V DC |
| IP Rating | IP 65 |
S7TW - Downloads
S7TW Datasheet Datasheet |
S7TW Manual Datasheet |
S7TW - Similar Products
- In-line Amplifier
- Compatible with any standard RDP LVDT (without integral electronics) and most LVDTs from any manufacturer
- Produces a DC output voltage or current
- Screw terminal connections
- Simple controls for gain and zero adjustment
- Input zero switch
- Signal overload indicator
- Synchronous demodulation
| Input Type | LVDT |
| # of Inputs | 1 |
| Output Type | ±4 to ±10 V DC, 4 - 20 mA |
| Max Bandwidth | 500 Hz |
| Excitation | 1 V AC |
| Isolation | No |