Bently Nevada 3500/65 Data sheet

3500/65 Channel Temperature Monitor

Datasheet

Bently Nevada Machinery Condition Monitoring

Description

The 3500/65 monitor provides 16 channels of temperature
monitoring and accepts both resistance temperature
detector (RTD) and isolated tip thermocouple (TC)
temperature inputs. The monitor conditions these inputs and
compares them against user-programmable alarm
setpoints.

The monitor is programmed using the 3500 Rack
Configuration Software. You can configure the 16-Channel
Temperature Monitor to accept isolated tip thermocouples,
3-wire RTD, 4-wire RTD, or a combination of TC and RTD inputs.

In Triple Modular Redundant (TMR) configurations, you must
install temperature monitors in groups of 3 adjacent
monitors. In this configuration the monitor uses 2 types of
voting to ensure accurate operation and to avoid single­point failures.

172930 Rev. J

3500/65 Channel Temperature Monitor
Datasheet 172930 Rev. J

Platinum RTDs with α = 0.00385 are the

Specifications

Inputs

worldwide industrial standard and are
the recommended RTDs for all
applications.

Power
Consumption

Signal Accepts from 1 to 16 RTD or

Input
Impedance

3 watts nominal

isolated tip TC transducer
signals.

Greater than 1 MΩ for each
lead input.

Transducers

TCs

Type E

Type J

Type K

Type T

-100°C to +1000°C,
(-148°F to +1832°F)

0°C to +760 °C
(32°F to +1400 °F)

0°C to +1370°C
(32°F to +2498°F)

-160°C to +400°C,
( -256°F to +752°F)

Outputs

Front Panel LEDs

OK LED Indicates when the 3500/65 is

operating properly.

TX/RX LED Indicates when the 3500/65 is

communicating with other
modules in the 3500 rack.

Bypass LED Indicates when the 3500/65

monitor is in Bypass Mode.

RTD
Current­Source
Value

913 ± 7 µA @ 25°C per transducer
(1 supply for the 4-wire RTD and
2 supplies for the 3-wire).

Signal Conditioning

Specified at +25°C (+77° F). Full-scale
range for each channel is set in the field
via 3500 Configuration Software. No
calibration is required

RTDs 

100 Ω 3-wire and
4-wire platinum
RTD (α =

0.00385)
100 Ω 3-wire and

4-wire platinum
RTD (α =

0.00392)

120 Ω 3-wire and
4-wire nickel
RTD

10 Ω 3-wire and
4-wire copper
RTD



-200°C to +850°C
(-328°F to +1562°F)

-200°C to +700°C
(-328°F to +1292°F)

-80°C to +260°C
(-112°F to +500°F)

-100°C to +260°C,
(-148°F to +500°F)

RTDs and TCs

Resolution 1°C or 1 °F.

Accuracy

Internal
Termination

External
Termination

Bulkhead Rack: ±3°C at +25°C
(±5.4°F at +77°F).

Standard Rack: ±3°C at +25°C
(±5.4°F at +77°F).

Bulkhead Rack: ±3°C at +25°C
(±5.4°F at +77°F)

Standard Rack: ±3°C at +25°C
(±5.4°F at +77°F)

Cold Junction Compensation
Sensor (used for TC
measurements) ±2°C at +25°C
(±3.6°F at +77°F).

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3500/65 Channel Temperature Monitor
Datasheet 172930 Rev. J

Alarms

Alarm
Setpoints

Alarm
Time
Delays

Alert
Delay

Danger
Delay

You can use software
configuration to set Alert and
Danger setpoints for the value
measured by the monitor. Alarms
are adjustable from 0 to 100% of
full-scale for each measured
value. The exception is when the
full-scale range exceeds the range
of the sensor. In this case,
software will limit the setpoint to
the range of the sensor. Accuracy
of alarms are to within 0.13% of the
desired value. The 3500/65 16­channel temperature monitor has
both under- and over-alarm
setpoints.

You can use software to program
alarm delays as follows:

From 1 to 60 seconds in 1-second
increments.

From 1 to 60 seconds in 0.5­second increments or set to the
minimum alarm delay of 225 mS.

Proportional Values

Proportional values are temperature
measurements used to monitor the machine.
The 16-channel temperature monitor returns
temperature proportional values.

Environmental Limits

Operating
Temperature:

Storage
Temperature:

-30°C to +65°C (-22°F to
+150°F)

-40°C to +85°C (-40°F to
+185°F)

Physical

Main Module

Dimensions
(Height x
Width x
Depth)

Weight 0.91 kg (2.0 lbs.).

I/O Modules

Dimensions
(Height x
Width x
Depth)

241.3 mm x 24.4 mm x 241.8 mm
(9.50 in x 0.96 in x 9.52 in)

241.3 mm x 24.4 mm x 99.1 mm
(9.50 in x 0.96 in x 3.90 in)

Weight 0.45kg (1.0 lb.).

Rack Space Requirements

Main
Module

I/O Modules 1 full-height rear slot

1 full-height front slot

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3500/65 Channel Temperature Monitor
Datasheet 172930 Rev. J

Hazardous Area Approvals

Compliance and Certifications

FCC

This device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions:

l This device may not cause harmful

interference.

l This device must accept any

interference received, including
interference that may cause
undesired operation.

EMC

European Community Directive:

EMC Directive 2014/30/EU

Standards:

EN 61000-6-2 Immunity for

Industrial Environments

EN 61000-6-4 Emissions for

Industrial Environments

Electrical Safety

European Community Directive:

For the detailed listing of country and
product specific approvals, refer to the
Approvals Quick Reference Guide
(108M1756) available from Bently.com.

CSA/NRTL/C

Class I, Zone 2: AEx/Ex nA nC ic IIC T4
Gc;
Class I, Zone 2: AEx/Ex ec nC ic IIC T4
Gc;
Class I, Division 2, Groups A, B, C,
and D;

T4 @ Ta= -20˚C to +65˚C (-4˚F to
+149˚F)
When installed per drawing 149243
or 149244.

ATEX/IECEx

II 3 G

Ex nA nC ic IIC T4 Gc
Ex ec nC ic IIC T4/T5 Gc

T4 @ Ta= -20˚C to +65˚C
(-4˚F to +149˚F)
When installed per drawing 149243
or 149244.


LV Directive 2014/35/EU

Standards:

EN 61010-1

RoHS

European Community Directive:

RoHS Directive 2011/65/EU

Maritime

ABS - Marine and Offshore Applications

DNV GL Rules for Classification – Ships,
Offshore Units, and High Speed and Light
Craft

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3500/65 Channel Temperature Monitor
Datasheet 172930 Rev. J



Ordering Considerations

If you add the 3500/65 to an existing 3500
System your system will require the following or
later firmware and software versions:

3500/22 Module Firmware Revision 1.50

3500/01 Software Version 3.85

3500/02 Software Not supported*

3500/03 Software Not supported*

3500/93 Module Firmware
System 1 Software Revision 5.2

*Attempting to use the 3500/65 with
3500/02 or 3500/03 software may
prevent proper operation of the
software.

You cannot use external termination blocks
with internal termination I/O modules.

When ordering I/O Modules with external
terminations, you must order the external
termination blocks and cables separately.

When ordering I/O Modules for use with 4-Wire
RTDs, order with Modification 179952-01. For
further information, see the 3500/65 User Guide.

This will result in an I/O Module Mismatch
and 562 ADC Failure in the System Event
List.

Revision 2.02

with Service
Pack 2 or later



Ordering Information

For the detailed listing of country and
product specific approvals, refer to the
Approvals Quick Reference Guide
(108M1756) available from Bently.com.

3500/65-AA-BB

A: I/O Module Type

01

02 RTD/Isolated Tip TC with External

B: Agency Approval Option

00
01 CSA/NRTL/C

02 CSA/ATEX



RTD/Isolated Tip TC with Internal
Terminations

Terminations

None

Agency Approval Option B 02 is only
available with Ordering Option A 01.

External Termination Block

172115-01 RTD/Isolated Tip TC External

Termination Block (Euro Style
connectors).







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



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3500/65 Channel Temperature Monitor
Datasheet 172930 Rev. J

Cables

Spares

3500/65 Transducer (XDCR) Signal to
External Termination (ET) Block Cable

134544-AAAA-BB

A: Cable Length

Part

Number

172931

145988-02

Description

3500/65 User Guide

3500/65 Monitor

0005 5 feet (1.5 metres)

0007 7 feet (2.1 metres)

0010 10 feet (3 metres)

0025 25 feet (7.5 metres)

0050 50 feet (15 metres)
0100

B: Assembly Instructions

01 Not Assembled

02 Assembled

100 feet (30.5 metres)

172103-01

173005

172109-01

172115-01

When replacing an older I/O module
with a newer one,172109-01 Rev D, 172103­01 Rev F, 172115-01 Rev E, or future
revisions; it is necessary to upgrade the
firmware to the monitor with the latest
released version. You must remove the
I/O module before upgrading the
monitor to the latest firmware. Failure to
do this will result in an I/O Module
Mismatch and 562 ADC Failure in the
System Event List.

3500/65 RTD/Isolated Tip TC I/O
Module, Internal Terminations

Connector Header, Internal
Termination, 20-position, Black

3500/65 RTD/ Isolated Tip TC I/O
Module, External Terminations

RTD/Isolated Tip TC External
Termination Block (Euro Style
Connectors) Specifications

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3500/65 Channel Temperature Monitor
Datasheet 172930 Rev. J

Graphs and Figures

1. Status LEDs.
2. 3500/65 16 Channel Temperature Monitor
3. Ethernet 10BASE-T/100BASE-TX I/O Module
4. Ethernet 100BASE-FX I/O Module

Figure 1: Front and rear views of the 3500/65 16 Channel Temperature Monitor

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3500/65 Channel Temperature Monitor
Datasheet 172930 Rev. J

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

1631 Bently Parkway South, Minden, Nevada USA 89423

Phone: [phone] or 1.800.227.5514 (US only)

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