Bently Nevada 3500/65 145988-02 Channel Temperature Monitor

Bently Nevada 3500/65 145988-02 Channel Temperature Monitor
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.

Specifications

Inputs

Power

Consumption 3 watts nominal

Signal

Accepts from 1 to 16 RTD or

isolated tip TC transducer

signals.

Input

Impedance

Greater than 1 MΩ for each

lead input.

Transducers

TCs

Type E

-100°C to +1000°C,

(-148°F to +1832°F)

Type J

0°C to +760 °C

(32°F to +1400 °F)

Type K

0°C to +1370°C

(32°F to +2498°F)

Type T

-160°C to +400°C,

( -256°F to +752°F)

RTDs

100 Ω 3-wire and

4-wire platinum

RTD (α =

0.00385)

-200°C to +850°C

(-328°F to +1562°F)

100 Ω 3-wire and

4-wire platinum

RTD (α =

0.00392)

-200°C to +700°C

(-328°F to +1292°F)

120 Ω 3-wire and

4-wire nickel

RTD

-80°C to +260°C

(-112°F to +500°F)

10 Ω 3-wire and

4-wire copper

RTD

-100°C to +260°C,

(-148°F to +500°F)

Platinum RTDs with α = 0.00385 are

the worldwide industrial standard

and are the recommended RTDs for

all applications.

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 and TCs

Resolution 1°C or 1 °F.

Accuracy

Internal

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).

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)

Cold Junction Compensation

Sensor (used for TC

measurements) ±2°C at +25°C

(±3.6°F at +77°F).

Alarms

Alarm

Setpoints

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 16-

channel temperature monitor has

both under- and over-alarm

setpoints.

Alarm

Time

Delays

You can use software to program

alarm delays as follows:

Alert

Delay

From 1 to 60 seconds in 1-second

increments.

Danger

Delay

From 1 to 60 seconds in 0.5-

second increments.

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:

-30°C to +65°C (-22°F to

+150°F)

Storage

Temperature:

-40°C to +85°C (-40°F to

+185°F)

Physical

Main Module

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)

Weight 0.91 kg (2.0 lbs.).

I/O Modules

Dimensions

(Height x

Width x

Depth)

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 1 full-height front slot

I/O Modules 1 full-height rear slot