SLD7xx Series 4-20 mA Vibration Transmitters
Loop-powered transmitters that feed vibration velocity straight to a PLC or DCS
- Part number
- SLD722 – SLD734
- Brand
- SPM Instrument
Accelerometers that provide a 4-20 mA output proportional to the true RMS value of vibration velocity. They connect directly to common process control systems (PLC, DCS) and draw power from the standard 4-20 mA loop, needing no separate monitoring system.
Highlights
- 4-20 mA output proportional to the true RMS of vibration velocity
- 2–1000 Hz (SLD72x) and 10–1000 Hz (SLD73x) bands
- 12.5 / 25 / 50 mm/s full-scale options
- Loop powered, 12 to 24 V DC; no separate supply needed
- Stainless acid-proof steel casing, IP66/67
The transmitter is installed on a flat machine surface. Mechanical fastening uses mounting studs (accessories) with M6, M8, M10 or UNF 1/4" thread, connected through the M8 tapped hole on the transmitter. The electrical signal is isolated from the transmitter housing.
The series splits into six codes by measuring range and frequency range. SLD72x models work in the 2–1000 Hz band and SLD73x models in 10–1000 Hz; each band offers 12.5 / 25 / 50 mm/s full scale. The 72x series, starting at 2 Hz, suits slow-turning equipment, while the 73x series is chosen where low-frequency and structural components should be excluded.
Connection is either through a 2-pin MIL-C-5015 connector or an integral cable with protection tube adapter (3, 5, 10 or 20 m).
Variants
| Variant | SLD72212.5 mm/s · 2 Hz | SLD72325 mm/s · 2 Hz | SLD72450 mm/s · 2 Hz | SLD73212.5 mm/s · 10 Hz | SLD73325 mm/s · 10 Hz | SLD73450 mm/s · 10 Hz |
|---|---|---|---|---|---|---|
| Measuring range (full scale) | 0 – 12.5 mm/s (0.5 ips) | 0 – 25 mm/s (1 ips) | 0 – 50 mm/s (2 ips) | 0 – 12.5 mm/s (0.5 ips) | 0 – 25 mm/s (1 ips) | 0 – 50 mm/s (2 ips) |
| Frequency range | 2 – 1000 Hz | 2 – 1000 Hz | 2 – 1000 Hz | 10 – 1000 Hz | 10 – 1000 Hz | 10 – 1000 Hz |
| Output | 4 – 20 mA, true RMS of vibration velocity | 4 – 20 mA, true RMS of vibration velocity | 4 – 20 mA, true RMS of vibration velocity | 4 – 20 mA, true RMS of vibration velocity | 4 – 20 mA, true RMS of vibration velocity | 4 – 20 mA, true RMS of vibration velocity |
Options
| Part number | Description |
|---|---|
| TB | Connection option: 2-pin MIL-C-5015 connector |
| TCP | Connection option: integral cable with protection tube adapter — 3, 5, 10 or 20 m |
Accessories
| Part number | Description |
|---|---|
| 18177 / 18178 / 18179 / 18180 | Mounting stud M8 to M6 / M10 / UNF 1/4"x28 / M8 |
| 81027 / 81057 | Counterbore holder and counterbore, diameter 20 mm |
| 81030 / 81031 / 81033 | Pilot — M6 and UNF 1/4"-28 / M8 / M10 |
| 90389 | Shielded twisted pair cable |