Bently Nevada 3500/65 145988-02 16-Channel Temperature Monitor
The 145988-02 monitor spare for 16-channel RTD and isolated-tip thermocouple supervision in a 3500 rack.
Key Information
3500/65 145988-02 is the monitor module spare for the Bently Nevada 3500/65 16-channel temperature monitor. It accepts RTD and isolated-tip thermocouple inputs and applies configured Alert and Danger supervision.
Channel configuration is set in 3500 software and may combine supported sensor types. The monitor, I/O module, channel map, firmware and rack software minimums must be reviewed as one replacement boundary.
Functions
- Acquires as many as sixteen temperature channels.
- Supports thermocouple types E, J, K and T.
- Supports three-wire and four-wire RTD configurations.
- Provides programmable under-temperature and over-temperature Alert and Danger setpoints.
- Reports OK, transmit/receive and bypass status through front-panel indicators.
Specifications
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Model | 3500/65 145988-02 |
| Part Number | 145988-02 |
| Product Family | 3500 machinery protection system |
| Product Type | 16-channel temperature monitor |
| Input Types | Isolated-tip thermocouple or RTD |
| Thermocouple Types | E, J, K and T |
| RTD Wiring | 3-wire or 4-wire |
| Display Resolution | 1 °C or 1 °F |
| Nominal Power Consumption | 3 W |
| Input Impedance | Greater than 1 MΩ per lead |
| Alert Delay | 1 to 60 seconds in 1-second increments |
| Danger Delay | 1 to 60 seconds in 0.5-second increments |
| Operating Temperature | -30 to 65 °C |
| Storage Temperature | -40 to 85 °C |
| Rack Position | One full-height front slot with matching rear I/O slot |
| Internal-I/O Module | 172103-01 |
| External-I/O Module | 172109-01; external terminal block 172115-01 |
Installation
- Back up the 3500 rack configuration, channel sensor types, setpoints, delays and relay logic.
- Record the 145988-02 label, monitor firmware, I/O-module part number, rack slot and every field channel.
- Confirm the required 3500/22, configuration-software and display-firmware support before installation.
- Do not pair an external termination block with an internal-I/O module arrangement.
- Simulate every used RTD or thermocouple channel and prove indication, OK status, alarms, bypass and associated relay logic.
Lifecycle
- Keep monitor and I/O revisions, firmware, rack configuration and calibration results together.
- Review I/O-revision instructions before an upgrade; complete the prescribed firmware process with the I/O removed when required.
- Inspect terminal blocks, sensor wiring and cold-junction or lead compensation behavior during outages.
- Use event history to separate field-sensor faults from monitor or I/O faults.
FAQ
What must be supplied for an exact 3500/65 145988-02 quotation?
Provide both module labels, I/O part number, rack slot, firmware, 3500 software release, sensor list and channel configuration export.
Can 3500/65 145988-02 use internal and external terminations interchangeably?
No. Match the monitor to the correct I/O-module and termination architecture; an external terminal block is not used with the internal-I/O arrangement.
What compatibility checks precede a 3500/65 145988-02 firmware or I/O change?
Review the published minimum firmware and software levels, the installed 3500/22 and display firmware, and the I/O-revision procedure.
How should 3500/65 145988-02 be acceptance-tested?
Simulate each configured sensor type at several temperatures, then verify readings, OK state, Alert and Danger timing, bypass and relay action.
What information helps diagnose a 3500/65 145988-02 channel fault?
Include sensor type, wiring method, I/O revision, channel configuration, measured lead resistance, terminal photographs and event records.
