649A01 Reciprocating Machinery Protector (RMP)
Description
Model 649A01 Reciprocating Machinery Protector (RMP) uses the next generation of impact monitoring technology. This two-wire, loop-powered, 4-20 mA transmitter detects impacts from mechanical shock events, which typically occur in or near a machine’s cylinder assembly. This technology is particularly effective on reciprocating machinery where these high-frequency impacts are often overlooked or when trending overall vibration levels.
The hermetically sealed design can be easily interfaced with existing alarm, control, and monitoring systems such as PLCs, DCS, and SCADA systems. The field programmable features of the RMP allow users to customize each installation point and tailor the output to suit their application. This includes variable setpoints and alarm levels for optimum performance. The RMP detects common reciprocating compressor faults such as loose or broken bolts, cracked connecting rods, and scoring in the cylinder.
Specs
- Output: 4-20 mA
- Machinery RPM Range: 240 to 10,000 cpm (4 to 166 Hz)
- Temperature Range: -40 to 212°F (-40 to 100°C)
- Excitation Voltage: 15 to 30V DC
| PERFORMANCE | |||
|---|---|---|---|
| Output | 4-20 mA | ||
| Machinery RPM Range | 240 to 10,000 CPM (4 to 166 Hz) | ||
| Time Window | 0.1 to 4.0 sec | ||
| Weighting Factor | 0.2 to 16 mA | ||
| Trending Range Current | 4 to 20 mA | ||
| Threshold Level | 2 to 50 g | ||
| ENVIRONMENTAL | |||
| Temperature Range | -40 to 212°F (-40 to 100°C) | ||
| Storage Temperature Range | -40 to 257°F (-40 to 125°C) | ||
| ELECTRICAL | |||
| Excitation Voltage | 15 to 30V DC | ||
| Load Resistance | 50(Vs-15) Ohm | ||
| Electrical Isolation | >10^8 Ohm | ||
| PHYSICAL | |||
| Size - Hex | 1.25 in. (32 mm) | ||
| Size - Height | 2.60 in. (66 mm) | ||
| Weight | 7 oz. (198 g) | ||
| Mounting Thread | 1/4-28 UNF | ||
| Mounting Torque | 3 to 5 ft-lb (4 to 7 Nm) | ||
| Sensing Element | Piezoelectric Accelerometer | ||
| Housing Material | Stainless Steel | ||
| Sealing | Welded Hermetic | ||
| Electrical Connection Position | Top | ||
| Electrical Connections (Pin A) | 4-20 mA Pos (+) | ||
| Electrical Connections (Pin B) | 4-20 mA Neg (-) | ||
| Overload Limit (Shock) | 5,000 g pk (4,9050 m/s² pk) | ||