DR7AC, DC Powered LVDT Transducer Amplifier
- DIN Rail mount, LVDT Amplifier
- Compatible with any standard RDP LVDT (without integral electronics)
- Compatible with LIN & PY When fitted with two 1k Ohm bridge completion resistors (Does not provide analogue voltage linearisation for PY)
- Compatible with most LVDTs from any manufacturer
- Screw terminal connections
- Simple controls for gain and zero adjustment
- Input zero switch
- Signal overload indicator
- Synchronous demodulation
- Input/output isolation
- Simple trimpot controls
- Voltage / 4-20mA output
- Thermoplastic Case
- IP 20 rating
The DR7AC is a single channel signal-conditioning unit for use with transducers requiring AC excitation and synchronous demodulation, producing a DC output voltage or current.
To reduce electrical noise, system problems and the risk of accidental damage the DR7AC incorporates a DC-DC converter ensuring that the output of the unit is electrically isolated from the supply.
Units may be master-slaved in systems where carrier frequency beating is a problem.
The unit is housed in a DIN-rail mounting thermoplastic case with recessed screw-clamp terminals for all connections and 25-turn front-panel-accessible span and zero adjustments.
All other controls are internal including coarse gain and zero switches, a zero input switch and jumper links for master/slave setting and excitation frequency setting.
The unit is suitable for use with the complete range of RDP LVDT transducers.
| Input Type | LVDT |
| # of Inputs | 1 |
| Output Type | 0 - 10 V DC |
| ±10 V DC | |
| 4 - 20 mA | |
| Max Bandwidth | 250 Hz |
| Excitation | 1 V AC |
| 3 V AC | |
| Isolation | Yes |
| Supply Power | 9 - 36 V DC |
| IP Rating | IP 20 |
DR7AC Datasheet Datasheet |
DR7AC Manual Tech Note |
- High Accuracy
- For Switch Cabinet Assembly, Width 23 mm, only
- Direct Connection to PLC
- Long Input Lead from GM 40 to Evaluation possible
- Easy to operate
- Voltage or Current Output
- DIN Rail Mount
- Rating: IP20
| Input Type | Strain Gauge |
| # of Inputs | 1 |
| Output Type | ±5 V DC, ±10 V DC, 4 - 20 mA |
| Max Bandwidth | 1 kHz, 5 kHz, 10 kHz |
| Excitation | 5 V DC, 10 V DC |
| Isolation | Yes |