Bently Nevada 3500 Machinery Protection System Temperature Monitors
Our six-channel 3500/61 (with recorders) processes the signals from RTDs (resistance temperature detectors) and TCs (thermocouples). The 3500/61 is capable of monitoring temperature or temperature differentials and is typically used for radial bearing or thrust bearing metal temperature in accordance with API670, but can also be used for key process temperatures such as compressor suction and discharge temperatures, steam temperature, motor stator temperatures, among others. The 3500/61 conditions the inputs and compares the conditioned signals with user-programmable setpoints that can drive alarms and relay logic in the 3500 relay modules. External terminations and internal barrier versions are also available. The 3500/60 and 3500/61 provide identical functionality, with the 3500/61 offering additional 4-20mA recorder outputs for each of its six channels while the 3500/60 does not. The TC-isolated version provides 250 Vdc of channel-to-channel isolation that is sometimes required for use with high speed mag pickup applications.
