Bently Nevada 3500/65-01-00 145988-02 Temperature Monitor

Bently Nevada 3500/65-01-00 145988-02 16-Channel Temperature Monitor

Product Introduction

The Bently Nevada 3500/65-01-00 145988-02 monitors up to 16 temperature inputs simultaneously. It accepts signals from RTDs or isolated tip thermocouples (TCs). This module uses internal terminations with no external blocks needed. Front panel LEDs indicate OK, TX/RX communication, and Bypass mode. Additionally, software configuration allows full-scale range setting per channel. Made in the U.S.A., the Bently Nevada 3500/65-01-00 145988-02 requires no manual calibration.

Technical Specifications

Output and LED Indicators

The OK LED illuminates when the Bently Nevada 3500/65-01-00 145988-02 operates properly. The TX/RX LED flashes during communication with other 3500 rack modules. The Bypass LED lights up when the monitor is in Bypass Mode.

RTD current source value is 913 ±7 µA at 25°C per transducer. For 4-wire RTDs, one supply is used. For 3-wire RTDs, two supplies are required.

Accuracy and Resolution

Resolution is 1°C or 1°F. For internal termination with bulkhead or standard racks, accuracy is ±3°C at 25°C (±5.4°F at 77°F). External termination provides the same accuracy. Cold junction compensation for TC measurements is ±2°C at 25°C (±3.6°F at 77°F).

Programmable Alarms

The Bently Nevada 3500/65-01-00 145988-02 offers both under- and over-alarm setpoints. Alert and Danger setpoints adjust from 0 to 100% of full-scale per measured value. Software limits setpoints if the full-scale range exceeds sensor range. Alarm accuracy is within 0.13% of the desired value.

Alert delays range from 1 to 60 seconds in 1-second increments. Danger delays range from 1 to 60 seconds in 0.5-second increments. Both are software programmable.

Environmental Limits

Temperature and Humidity

Operating temperature ranges from -30°C to +65°C (-22°F to +150°F). Storage temperature spans -40°C to +85°C (-40°F to +185°F).

Physical Dimensions

The main module measures 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in). Weight is 0.91 kg (2.0 lbs). Rack space requirement is one full-height front slot.

Compliance and Certifications

The Bently Nevada 3500/65-01-00 145988-02 complies with FCC Part 15 rules. It meets EMC Directive 2014/30/EU with EN 61000-6-2 and EN 61000-6-4 standards. For electrical safety, it follows LV Directive 2014/35/EU and EN 61010-1. It also complies with RoHS Directive 2011/65/EU. Maritime approvals include ABS and DNV GL for ships and offshore units.

Software and Ordering Considerations

First, adding the Bently Nevada 3500/65-01-00 145988-02 to an existing 3500 system requires specific versions. The 3500/22 module needs firmware revision 1.50 or later. The 3500/93 module needs firmware revision 2.02 or later. System 1 software requires revision 5.2 with Service Pack 2 or later. Additionally, 3500/01 software needs version 3.85 or later.

Importantly, you cannot use external termination blocks with internal termination I/O modules like the 3500/65-01-00 145988-02. For 4-wire RTD applications, order with modification 179952-01. Failure to do so will cause an I/O Module Mismatch and 562 ADC failure in the System Event List.

Note that 3500/02 and 3500/03 software are not supported. Attempting to use these versions may prevent proper operation.

Installation Guidelines

Power down the 3500 rack before installation. Insert the Bently Nevada 3500/65-01-00 145988-02 into a full-height front slot. Connect RTD or TC sensors to the internal termination I/O module. Then, use 3500 Configuration Software to set full-scale range per channel. Configure alarm setpoints and time delays as needed. Finally, power up the rack and verify the OK LED illuminates.

Packaging List

• Bently Nevada 3500/65-01-00 145988-02 Temperature Monitor Module (1 unit)

• I/O Module with Internal Terminations (1 unit)

• Installation documentation (1 copy)

Shipping method: FedEx, UPS, DHL

Frequently Asked Questions (FAQ)

1. How many channels does the Bently Nevada 3500/65-01-00 145988-02 support?
It supports up to 16 channels. Each channel accepts either an RTD or an isolated tip thermocouple input.

2. Does this module require field calibration?
No. The Bently Nevada 3500/65-01-00 145988-02 requires no calibration. Signal conditioning is specified at 25°C, and full-scale range is set via software.

3. Can I use external termination blocks with this module?
No. The 3500/65-01-00 145988-02 uses internal termination I/O modules. External termination blocks are not compatible.

4. What software versions work with the 3500/65-01-00 145988-02?
It requires 3500/22 firmware v1.50+, 3500/93 firmware v2.02+, System 1 v5.2 SP2+, and 3500/01 v3.85+. The module does not support 3500/02 or 3500/03 software.

5. What happens if I use the wrong I/O module for 4-wire RTDs?
You will see an I/O Module Mismatch and a 562 ADC failure in the System Event List. Therefore, order modification 179952-01 for 4-wire RTD applications.