RMS HS-620 Manuale utente
Vibration Monitoring For Industrial Applications
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User Guide
HS-620/630 Monitoring Kits
RMS Ltd
HS-620/630 User Guide
QM014 Issue 6
HS-620/630
Vibration Meter Kit
User Guide
The HS-620 Vibration Meter Kit is an ideal low cost entry level vibration monitoring
instrument, designed for Maintenance Technicians to use on site, helping to give
protection to important plant machinery. The HS-630 adds an easy to use temperature
measurement function.
This document may not be reproduced in any way without the prior written permission
of the company.
Reliability Maintenance Solutions Ltd
HS-620/630 User Guide
QM014 Issue 6
HS-630 in case
HS-620/630 User Guide
QM014 Issue 6
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1. Overview
1.1 HS-620/630 Kit Contents
1.2 Overall Vibration Mode
1.3 Bearing Status Mode
1.4 Measurement Units
2. Operating Instructions
2.1 Sensor Connection
2.2 Power On/Off
2.3 Key Functions
2.4 Overall Vibration Measurement & Assessment
2.5 ISO Machine Groups
2.6 Bearing Status Check
2.7 Battery & Charger
3. The ISO 10816-3 Machine Vibration Standard
4. Bearing Status Assessment
4.1 Bg Value
4.2 Bv Value
5. Temperature Mode (HS-630 only)
5.1 Surface Temperature Measurement
6. Specication
7. Warranty
8. Certicate of Calibration
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Contents
HS-620/630 User Guide
QM014 Issue 6
1. Overview
The HS-620 Vibration Meter Kit is a reliable and easy to use hand-held machine condition
inspection instrument. It provides vibration measurement, alarm indication and a bearing
status check facility. The HS-630 kit provides an additional facility for non-contact
temperature measurement. The meter enables plant maintenance technicians to monitor
their machines, nd potential problems in advance of failure, and to ensure machine
reliability.
1.1 HS-620/630 Kit Contents
• Vibration meter/Vibration meter with temperature, with lithium battery tted
• Hand-held Accelerometer with TNC Connector
• 80cm cable with TNC to BNC connectors
• Magnetic Base
• Vibration Spike
• 2 x Battery Charger (Mains + Car)
• Manual
• Carrying Case
1.2 Overall Vibration Mode
The meter can measure vibration Velocity in mm/s rms, Acceleration in g peak, and
Displacement in !m peak to peak. When measuring Velocity, and on switching to the
‘Hold’ mode, the meter display will indicate an alarm status according to ISO10816-3.
1.3 Bearing Status Mode
The meter measures Bg value in g rms and Bv value in mm/s rms which represent the
bearing status. The lower frequency machine vibrations are attenuated by a 1kHz high
pass lter. In the ‘Hold’ mode, the meter display indicates the bearing alarm status.
1.4 Measurement Units
The meters are available in three different congurations for measurement units. These
are: Metric 1, Metric 2 and Imperial. The units required must be specied on order – see
table on page 5 for units used in each mode. Metric 1 settings are used throughout the
manual.
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HS-620/630 User Guide
QM014 Issue 6
BNC connector
LCD Screen
VIB Key
SEL Key
BRG Key
Integral Cable
Hand Probe
with Sensor
2. Operating Instructions
Figure 1. The VBA20
2.1 Sensor Connection
Fitthevibrationsensor tothe machinemeasurement positionvia amagnetic base or stud.
Connect the sensor cable to the BNC connector on the meter. When a satisfactory sensor
connection is made, the sensor fault icon on the LCD display will disappear. Conversely,
the sensor fault icon will appear if the meter detects a poor sensor connection.
2.2 Power On/Off
Power On - Push SEL key only for “ sec. The meter defaults to the overall vibration
velocity range.
Power Off - Push two keys, SEL + BRG or SEL + VIB for 1 sec.
The meter will power-off on release of the keys.
The meter will automatically power-off after 3 minutes of no key operation.
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HS-620/630 User Guide
QM014 Issue 6
2.3 Key Functions
SEL key -
OVERALL VIBRATION MODE Measurement units - specied on order
Metric 1 Metric 2 Imperial
Bg g rms m/sec2 rms g rms
Bv µm pk-pk µm pk-pk mil pk-pk
Table 1
BEARING STATUS MODE Measurement units - specied on order
Metric 1 Metric 2 Imperial
Bg g rms m/sec2 rms g rms
Bv m/sec rms mm/sec rms in/sec rms
Table 2
Press SEL to switch-on the meter.
In the Overall Vibration mode press SEL to toggle through the
measurement parameter options:
VIB key - Press VIB to toggle between Measure and Hold modes. The Hold
mode is indicated by an ‘H’ in the display.
In the BRG mode press VIB to enter the Overall Vib. Mode.
BRG key - In the Overall Vib. Mode press BRG to enter the Bearing Status
mode.
In the Bearing Status measurement mode press BRG to toggle
between this and the Bearing Status hold mode indicated by an
‘H’ on the display.
When the overall velocity reading is in the Hold mode, the meter display indicates the
vibration alarm status of the machine according to ISO10816-3 as dened in section 3.
When the BRG velocity or g reading is in the Hold Mode the meter display indicates the
bearing status according to a rule-of-thumb assessment as dened in section 4.
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HS-620/630 User Guide
QM014 Issue 6
2.4 Overall Vibration Measurement & Assessment
At switch-on the meter defaults to the Velocity measurement mode, with the units ‘mm/s
rms’ indicated at the bottom right of the display.
If required, press SEL to select acceleration or displacement. Note that no vibration
assessment is available on these ranges.
When the vibration reading has settled, press VIB to move to the Hold Mode. An ‘H’ icon
is displayed.
In the velocity range the meter will then indicate either a tick icon for OK, a single bell for
vibration alert or two bells for danger.
The meter makes this assessment depending on the vibration level and one of the four
machine group options selected using the SEL key.
The machine groups are dened in ISO10816-3 and the meter categorises these as
‘ISO1&3-R’, ‘ISO2&4-R’, ‘ISO2&4-F’. R and F refer to rigid and exible machine mounting
respectively.
A label on the back of the meter gives detail of the ISO10816-3 machine groups. The
user can refer to this to conrm the appropriate group number for the tested machine.
The information contained is as follows in section 2.5.
2.5 ISO Machine Groups
Group 1 - Large machines rated power above 300KW; Electrical Machines
with shaft dia. >315mm. Normally sleeve bearings, speed
120RPM - 15000RPM.
Group 2 - Medium-sized Machines rated power 15KW < P <300KW;
Electrical Machines with shaft 160mm <dia.> 315mm. Normally
element bearings, speed above 600RPM.
Group 3 - Pumps with multi-vane impeller and with separate driver
(centrifugal, mixed ow or axial ow) with rated power above
15KW.
Group 4 - Pumps with multi-vane impeller and with integrated driver
(centrifugal, mixed ow or axial ow) with rated power above
15KW.
Support Class- R= Rigid Mount. F= Flexible Mount.
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2.6 Bearing Status Check
Fix the sensor directly to the bearing housing as close to the bearing as possible. Note
that valid high frequency readings are unlikely to be measured using hand-pressure and
the spike.
Press the BRG key to enter the Bearing Status mode.
Press the SEL key to select either Bg (g RMS) or Bv (mm/s RMS).
When the bearing status reading has settled, press the BRG key to enter the Hold Mode
(H). The bearing status reading is then held and the rule-of-thumb alarm status displayed.
Press the SEL key to toggle through and select the appropriate speed range of the
bearing shaft. (rpm: <500, rpm: <1000, rpm: <2000, rpm: <5000, rpm:<10000).
The meter will then indicate either a tick icon for OK, a single bell for vibration alert or
two bells for danger.
The meter makes the assessment based on the rules-of-thumb dened in section 4.
2.7 Battery & Charger
The vibration Meter is powered by an internal rechargeable Lithium-Ion battery which can
operate for 48 hours continuously following full charge. The battery condition is indicated
by an icon at the top right of the meter display.
The battery charger supplied requires 3 hours to fully charge the battery. An LED on
the charger indicated the charge status, being orange when charging and green when
charging is complete.
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HS-620/630 User Guide
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3. The ISO10816-3 Machine Vibration Standard
• Steam Turbines with nominal power less than 50MW
• Steam Turbines with nominal power above 50MW with speeds less than 1500rpm or
above 3600rpm (i.e. excludes machines included in ISO10816-2)
• Rotating Compressors
• Industry Gas Turbines with nominal power less than 3MW
• Centrifugal, Mixed Flow or Axial Flow Pumps
• Electric Generators excluding Hydro-electric or pump stations
• Electrical motors of all types
• Blowers or Fans
Industrial machines covered by the ISO10816-3 standard include:
The standard classies machine groups as in section 2.5 and denes vibration levels for
each group, shown in the chart on page 9, as follows:
Green - levels expected for a new machine.
Yellow - levels considered as acceptable for long periods.
Amber - levels not acceptable for long periods.
Reds - levels likely to cause machine damage.
It further classies machines as being either rigid or exible mounted with the exible
mounted machines being allowed higher vibration levels. The meter indicates a tick box for
levels in the green and yellow sections and uses the lower limit for the amber sections and
the red sections in its vibration assessments.
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