Page 1
1900/25 Vibration Monitor
IN/SEC
MM/SEC
OK ALERT DANGER BYPASS
DISPLAY MODE
NORMAL
ALERT
LEVEL
DANGER
LEVEL
ALERT
ADJUST
DANGER
ADJUST
RESET
BUFFERED
TRANSDUCER
1
0 1 2 3 4 5 6
N
ORMAL
BYPASS
RELAY MODE
ALERT & DANGER
TIME DELAY
00 3 SECONDS
01 5 SECONDS
10 10 SECONDS
11 15 SECONDS
ALERT RELAY
DRIVE CONDITIONS
00 ALERT
01 ALERT OR
NOT OK 10 NOT OK
11 DANGER
SELF TEST
0 OFF
1 ON
UNITS
0 ENGLISH
1 METRIC
MADE IN USA
BENTLY
NEVADA
VIBRATION MONITOR
Description
The 1900/25 is a single-channel, stand-alone, locally mounted vibration monitor.
It provides a built-in Transducer Interface Module (TIM) for connectivity with our
Trendmaster® 2000 system and allows the user to apply machinery protection
capabilities to all (or selected) seismic vibration points of their Trendmaster 2000
system. It can also be used independently of the Trendmaster 2000 system as a
stand-alone machinery protection device, suitable for general-purpose or some
essential machinery. The 1900/25 accepts a single transducer input from
compatible Trendmaster 2000 accelerometers, conditions the signal into peak
velocity units, and provides local display and status indication as well as alarm
relay contact outputs for connection to an external annunciator.
Note: If your application calls for a 4-20 mA interface in addition to the relays supplied with the
1900/25, consider the use of Bently Nevada’s 1900/27 monitor instead (consult part number
141486-01 for details).
Caution
If housing measurements are being made for overall protection of the machine,
thought should be given to the usefulness of the measurement for each
application. Most common machine malfunctions (imbalance, misalignment, etc.)
originate at the rotor and cause an increase (or at least a change) in rotor
vibration. In order for any housing measurement alone to be effective for overall
machine protection, a significant amount of rotor vibration must be faithfully
transmitted to the bearing housing or machine casing, or more specifically, to
the mounting location of the transducer.
In addition, care should be exercised in the physical installation of the
transducer. Improper installation can result in a decrease of the transducer
amplitude and frequency response and/or the generation of signals, which do
not represent actual machine vibration.
Upon request, we can provide engineering services to determine the
appropriateness of housing measurements for the machine in question and/or
to provide installation assistance.
.
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 1 of 8
Page 2
Specifications
Inputs
Compatible
transducers
Bently Nevada 200150 and
190520 Accelerometers.
Input Sensitivity
100 mv/g
Maximum
acceleration
20 g peak
Maximum
differential
input voltage
4 volts peak to peak
Power
AC/HDC Power
Version
Signal Conditioning
Monitor Full-scale:
(Below 614Hz)
English Units:
2.0 in/s zero-to-peak
Metric Units:
50.8 mm/s zero-to-peak
Note: Full scale is limited by maximum input above
614 Hz. The maximum input is 2 volts peak, or 20 g
peak. 20 g at 614 Hz is equivalent to 2 inch per
second (the full scale range of the monitor). For
frequencies above 614 Hz, Full scale is equal to
(1228/frequency).
Frequency
Response:
High pass
corner
frequency
AC Voltage:
DC Voltage:
Current Draw:
Frequency:
Inrush:
+24 Vdc Power
Version
Voltage:
Current Draw:
85 to 264 Vac
110 to 370 Vdc
60 mA. typ.
120 mA max.
47 Hz to 440 Hz, or DC.
20A typ. @ Vin=100Vac
40A typ. @ Vin=200Vac
18 to 36 Vdc
300 mA max.
-3 dB corner @ 8 Hz
less than 1% error due to high pass corner above
30 Hz
Low pass corner
Greater than 4 kHz
less than 1% error due to low pass corner below
4kHz
Accuracy
Liquid Crystal
Display and
Buffered output.
30 Hz – 4 kHz:
±3% of full scale, Maximum
8 Hz – 30 Hz
-30% , + 3% of full scale
Trendmaster
Output.
30 Hz – 4 kHz:
±5% of full scale, Maximum
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 2 of 8
Page 3
8 Hz – 30 Hz
-30% , + 5% of full scale
Outputs
Buffered
Transducer
Output
Output
Sensitivity:
19.7 mV/mm/s (500 mV/in/s)
Output
Impedance:
500 Ω
Full-scale
Range:
50.8 mm/s (2 in/s) zero-to-peak
Trendmaster®
2000 Interface
Full-scale
Range:
50.8 mm/s (2 in/s)
Overrange:
63.5 mm/s (2.5 in/s)
Frequency
Response:
10 Hz to 1 kHz
Galvanic
Isolation:
Optical @ 1000 Vac or 707 Vdc
Relays
Type
Single-pole, double-throw.
Contact Ratings
Switched Power:
180 watts, 1800 VA Maximum
Maximum
Voltage and
Current
300 Vac at 6 A
28 Vdc at 6 A
Dielectric
Strength
(at sea level):
Contact to Contact: 750 Vrms
Contact to Coil: 1500 Vrms
Life Expectancy
Electrical:
180,000 operations at 6 A, 120 Vac
Displays
Liquid Crystal
Display
Size:
50.8 mm wide x 22.8 mm high
(2.0 inches wide x 0.9 inches high)
Full-scale:
50.8 mm/s (1.999 in/s)
Refresh Rate:
0.8 s
LED Indicators
OK:
One constant ON green LED indicates OK condition
of monitor, transducers, and field wiring. Constant
OFF indicates NOT OK condition. OK LED flashing at 2
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 3 of 8
Page 4
Hz indicates monitor has been NOT OK, but is now
OK.
Alert:
One yellow LED indicates an Alert condition. Flashing
at 2 Hz indicates an Alert condition has occurred and
gone away. (Only occurs when the Alert relay is
configured as nonlatching.)
Danger:
One of the two red LEDs indicates a Danger
condition. Flashing at 2 Hz indicates a Danger
condition has occurred and gone away. (Only occurs
when the Danger relay is configured as nonlatching.)
BYPASS:
The other red LED indicates the monitor is in BYPASS
mode.
Controls
Display Mode
Switch:
Three positions: Normal, Alert Setpoint, and Danger
Setpoint. Controls what is shown on the LCD display.
Relay Mode
Switch:
Two positions; controls whether monitor is in normal
or BYPASS mode.
Reset Button:
Push to reset latching relays and flashing LEDs.
Configuration
Switch
Used to set Alert and Danger Time Delay, Alert relay
drive conditions, display units, and to initiate a
monitor self-test.
Environmental Limits
Operating
Temperature:
-20°C to +70°C (-4°F to +158°F)
Storage
Temperature:
-30°C to +90°C (-22°F to +194°F)
Relative
Humidity:
To 95%, noncondensing
Hazardous Area Approvals
CSA/NRTL/C:
Class1, Division 2, Groups A, B, C, D T4 @ Ta=70 °C
Physical
Dimensions
Height x Width x Depth
132mm x 132 mm x 71.1 mm
(5.2 in x 5.20 in x 2.8 in)
Weight
400 g (0.85 lb).
Ordering Information
1900/25-AXX
A: Power Supply Option
0 1 85 - 264 Vac, 110 – 370 DC
0 3 +24 Vdc
Field-programmable Options
These options are either field-changeable or
programmed via internal jumpers. Bold text
indicates options as shipped from the factory.
Alarm Time
Delay Option:
3 seconds
5 seconds
10 seconds
15 seconds
Alert Relay
Configuration
Option:
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 4 of 8
Page 5
Units Option:
Monitor Selftest Option:
Relay Mode
Option:
Normal Relay
State Option:
Relay Reset
Option:
Trendmaster®
2000 Behavior
Option:
Alert relay
Alert or NOT OK relay
NOT OK relay
Danger relay
English
Metric
Off
On
Normal
BYPASS
Normally de-energized
Normally energized
Latching
Nonlatching
The Trendmaster® 2000 host
computer indicates a NOT OK
condition when the monitor is
placed in BYPASS. Dynamic data
is not available during a BYPASS
condition.
The Trendmaster® 2000 host
computer indicates an OK
condition when the monitor is
placed in BYPASS. Dynamic data
is still available during a BYPASS
condition.
Accessories
200150 Accelerometer
200150-AXX
See Specification and Ordering Information sheet for
transducer ordering information.
200152 Transducer Cable
200152 - AXX
A: Cable length option in metres.
1 5 15 ±0.15 metre (49.2 ±0.5 feet)
190100-01
Weatherproof enclosure for one
1900/25 Vibration Monitor.
When properly installed, the
weatherproof enclosure will meet
NEMA 4X watertight
specifications.
Manual
190125-01
1900/25 Vibration Monitor
operation and maintenance.
Computer Interface: The 1900/25 Vibration
Monitoring System is ready to be used with our costeffective, automated data collection and diagnostic
system, the Trendmaster® 2000. Contact your local
Sales Professional for further information.
.
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 5 of 8
Page 6
IN/SEC
MM/SEC
OK ALERT DAN
GER BYPASS
DISPLAY MOD E
NORMAL
ALERT
LEVEL
DANGER LEVEL
ALERT
ADJUST
DANGER
ADJUST
RESET
BUFFERED
TRANSDUCER
1
0 1 2 3 4 5 6
NORMAL
BYPASS
RELAY MODE
ALERT & DANG ER
TIME DELAY
00 3 SECONDS
01 5 SECONDS
10 10 SECOND S
11
15 SECONDS
ALERT RELAY
DRIVE CONDITI ONS
00 ALERT
01 ALERT OR
NOT OK
10 NOT OK
11 DANGER
SELF TEST
0 OFF
1 ON
UNITS
0 ENGLISH
1 METRIC
MADE IN USA
Accelerometer
Field wiring diagrams and dimensions
Power
110/220 Vac
or +24 Vdc
Alert
Relay
BENTLY
NEVADA
VIBRATION MONITOR
PIN 1 SIG (+)
PIN 2 SIG (-)
PIN 3 COMMON
PIN 4 POWER
PIN 5 SHLD
PIN 1 SIG (+)
PIN 2 SIG (-)
PIN 3 COMMON
PIN 4 POWER
PIN 5 SHLD
Remote Reset
Use a normally open
momentarily closed
type switch
Danger
Relay
200150
Figure 1: Typical field wiring diagram for the 1900/25 Vibration Monitoring System
PIN 5 SHLD
PIN 4 RED
- POWER
PIN 3 BLACK
- COMMON
PIN 2 WHITE
- SIG (-)
PIN 1 GREEN - SIG (+)
Trendmaster 2000
System Cable
R
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 6 of 8
Page 7
OK ALERT DANGER BYPASS
DISPLAY MOD E
NORMAL
ALERT
LEVEL
DANGER
LEVEL
ALERT
ADJUST
DANGER
ADJUST
RESET
BUFFERED
TRANS
DUCER
1
0
1 2 3 4 5 6
NORMAL
BYPASS
RELAY MODE
ALERT & DANG ER
TIME DELAY
00 3 SECONDS
01 5 SECONDS
10 10 SECONDS
11 15 SECOND S
ALERT RELAY
DRIVE CONDITI ONS
00 ALERT
01 ALERT OR
NOT OK
10 NOT OK
11 DANGER
SELF TEST
0
OFF
1 ON
UNITS
0 ENGLISH
1 METRIC
MADE IN USA
MADE IN USA
4.064
BENTLY
NEVADA
VIBRATION MONITOR
IN/SEC
MM/SEC
119.4
(4.700)
(0.1600)
4 pl.
Dia.
71.1
(2.802)
119.4
(4.700)
BENTLY
NEVADA
27.9
(1.100)
132.1
(5.200)
Figure 2: 1900/25 Vibration Monitor Case Dimensions Diagram
Dimensions are in millimetres (inches)
59.7
(2.350)
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 7 of 8
Page 8
273
7.87
(0.31)
Dia. 4 pl.
(10.75)
153
(6.00)
11.43
(0.45)
213
(8.40)
264
(10.40)
153
(6.00)
Figure 3: 1900/25 Weatherproof Enclosure Dimensions Diagram
Dimensions are in millimetres (inches)
Copyright 1999. Bently Nevada LLC.
1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 775.782.3611 Fax: 775.215.2873
www.ge-energy.com/bently
All rights reserved.
Bently Nevada and Trendmaster, are trademarks of General Electric Company.
Specifications and Ordering Information
Part Number 141485-01
Rev. D (03/07)
Page 8 of 8
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