Overview
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 138708-01 |
| Brand | Bently Nevada |
| Product Type | Shaft Absolute I/O Module |
| Compatible Monitor | 3500/42M |
| Input Configuration | Shaft Absolute |
| Termination Arrangement | Internal terminations |
| Rack Location | Rear, full-height I/O position |
| Channel Association | Four-channel main monitor, with configuration in channel pairs |
| Barrier Configuration | Standard non-barrier I/O |
| Operating Temperature | -30 to +65 deg C |
| Storage Temperature | -40 to +85 deg C |
| Humidity Limit | 95%, noncondensing |
Configuration and Signal Interface
The 138708-01 provides the I/O interface for the specified Shaft Absolute measurement arrangement. Its termination design determines how field wiring connects to the monitoring system. The I/O module must match the transducer type and wiring arrangement required by the installed 3500/42M monitor.
The main monitor supports four-channel monitoring, with channel functions configured in pairs. Therefore, verify the intended channel configuration and sensor arrangement before replacing an existing I/O module.
Selection and Replacement Considerations
The 138708-01 uses internal terminations and a standard non-barrier configuration. These characteristics distinguish it from I/O variants that use different termination or barrier arrangements. Do not select a replacement based on the 3500/42M association alone; confirm the complete part number and installed wiring configuration.
Frequently Asked Questions
Q: Which monitor is the 138708-01 designed to work with?
A: It is specified for the Bently Nevada 3500/42M main monitor. Confirm the installed monitor and required I/O configuration before ordering.
Q: Does the 138708-01 include internal terminations?
A: Yes. The specified configuration is Shaft Absolute I/O with internal terminations.
Q: Can the 138708-01 replace any 3500/42M I/O module?
A: No. I/O variants may differ in termination and barrier requirements. Check the complete part number, transducer type, and existing wiring arrangement before selecting a replacement.
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