RMS HS-620 User manual

Vibration Monitoring For Industrial Applications
www.rms-reliability.com
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. Specication
7. Warranty
8. Certicate 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 congurations for measurement units. These
are: Metric 1, Metric 2 and Imperial. The units required must be specied 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
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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 - specied 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 - specied 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 dened 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 dened 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 dened 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 conrm 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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HS-620/630 User Guide
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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 dened 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 classies machine groups as in section 2.5 and denes 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 classies 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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HS-620/630 User Guide
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The machine mountings affect the resonances related to the basic running speed of the
machine. Machines with rubber or spring mountings often vibrate at low speeds following
start-up, and as the speed increases the vibration level is reduced. Such a machine is
considered to be exible mounted.
Modern high speed machines having exible bearing supports can also be considered as
exible mounted even though not mounted on rubber or springs.
A great advantage of using proper vibration measurements and standards is that future
maintenance requirements and costs can be assessed reliably on machine commissioning.
For example, if levels of 3mm/s rms are measured for a new machine, it is likely to require
high maintenance activity. The specic requirement of this is dependant on the machine
design and the advice of the machine manufacturer should be sought.
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Unit Group 1 and 3 Group 2 and 4
mm/s Rigid Flexible Rigid Flexible
0-1.4
1.4-2.3
2.3-2.8
2.8-3.5
3.5-4.5
4.5-7.1
7.1-11
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Figure 2. ISO 10816-3 Vibration Levels
Industrial machines with power above 15kW and
nominal speeds between 120-15000 r/min

HS-620/630 User Guide
QM014 Issue 6
4. Bearing Status Assessment
When the rolling elements move inside a bearing, broadband noise and vibration is
generated. This increases if the bearing is not properly lubricated, or is overloaded sue to
misalignment or damaged surfaces.
The bearing vibration Bg or Bv measured by the meter is the RMS value of all high frequency
bearing vibrations between 1kHz and 12kHz.
The vibrations below 1kHz are suppressed in the Bg and Bv modes to eliminate the
measurement vibrations caused by imbalance or misalignment. A practical problem arises
in gearboxes, and other machines where steel meets steel, in which vibrations are produced
in the same frequency range as bearing vibrations. For this reason bearings should not
normally be exchanged on the basis of a high bearing value only. A high bearing condition
value is an indication that further analysis is required, and an FFT analyser will indicate if
there are frequencies corresponding to the calculated bearing frequencies.
4.1 Bg Value
Bg Value is vibration acceleration within 1-12kHz in units of g RMS. The reason for using
acceleration is that it gives larger values at higher frequency than velocity measurements.
The rule-of-thumb assessment of Bg is shown in the chart on page 10.
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HS-620/630 User Guide
QM014 Issue 6
4.2 BV Values
BNC connector
LCD Screen
VIB Key
SEL Key
BRG Key
TEMP Key
Integral Cable
Hand Probe
with Sensor
Figure 4. HS-630
• BV < 1mm/s - Healthy bearing, correctly greased
• BV = 1-2mm/s - Possibly damaged or un-greased bearing
• BV > 2mm/s - Bearing seizure likely
BV measurement is a long established method for detecting bearing faults which gives
reliableindication of bearing condition in 80-90% of cases. Therule-of-thumb assessment
used in the metre is as follows:
5. Temperature Mode (HS-630 only)
The HS-630 uses a thermopile infra-red sensor to indicate temperature in Deg. C or Deg.
F on the display. An alignment laser beam is provided to indicate the area where the
temperature is being measured. Ambient temperature is also indicated in the bottom left
of the display.
Caution - Laser radiation - Do not stare into the Laser beam
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Laser Beam

HS-620/630 User Guide
QM014 Issue 6
5.1 Surface Temperature Measurement
The temperature sensor measures the average temperature in a circle of diameter
one-eight of the distance between the surface and the sensor. For example, when the
meter is held 1m from a surface, the sensor will respond to a 125mm spot diameter on
the surface. Thus, the measuring distance will dene the size surface to be measured.
The maximum recommended distance from the surface to sensor is 2m and hence the
maximum spot diameter is 250mm. The measurement is made as follows:
Switch on the meter using the SEL key.
Press the F/oCfor the temperature mode.
Aim the laser beam at the surface to be measured at a suitable distance from the surface,
remembering that the temperature sensor spot diameter is one-eight of the distance (i.e.
not the laser spot size).
The temperature reading can be toggled between oF and oC using the SEL key. Ambient
temperature is indicated at the bottom left of the display.
Exit the temperature mode by pressing the VIB or BRG key.
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HS-620/630 User Guide
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6. Specications
Constant Current Accelerometer 100mV/g other inputs on request
Acceleration: 0-50gPk, Frequency Range 10Hz-12kHz
Velocity:0-350 mm/s RMS, Freq. Range 10Hz-1kHz
Automatic Alarm Check: ISO10816-3.
Displacement: 0-4000µm Peak-Peak,
Freq. Range 10Hz-1kHz
Bg: 0-20 g RMS Freq. Range 1kHz -12 kHz Applies to
Bg line & Bv line.
Bv: 0-25 mm/s RMS, Freq. Range 1kHz-12 kHz
Automatic Alarm Check for BG and BV: Rule-of-thumb
-40°C to 150°C or -40°F to +300°F (HS-630 only)
Red, λ=650nm <1mW, IEC 60825-1 compliant (HS-630 only)
For Temp. measurement 0 to 2 metres (HS-630)
+/-5%
LCD
Lithium rechargeable battery, 3.6V 1700 mAh,
Recharge time 3 hours, >48 hours continuous operation
Operation: -10°C to +50°C; Storage: -20°C to +60°C
IP64 – Dust tight and splash resistant
75mm
Diameter 25mm, H 17mm, pull strength 12Kg
L 115mm x W 70mm x D 25mm
W 342mm x D 265mm x H 80mm
Full kit including carry case 1.25 Kgs
0.8m (other lengths available)
Input:
Vibration:
Bearing:
Temp. Range:
Laser Guide:
Distance Range:
Accuracy:
Display:
Power:
Temperature:
Meter Sealing:
Spike Length:
Magnetic Base:
Meter Size:
Carry Case Size:
Weight:
Cable Length:
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HS-620/630 User Guide
QM014 Issue 6
7. Warranty
All goods are guaranteed against defects in materials and workmanship, subject to specic
exclusions, for a period of 36 months from the date of purchase. In the event of failure within
36 months of original purchase, the company will promptly repair or replace the defective
components without charge.
Specic exceptions rendering the warranty void are:
If repair is attempted by unauthorised persons or agents, or the product has been used
for purposes for which it was not intended and or subjected to abuse or willful neglect. No
liability can be accepted for loss of items or component parts. It is expected that the user
takes sufcient precautions to safeguard all guaranteed items.
No.42 Goldcrest Close
Longridge Park
Colchester, Essex
CO4 3FN, England.
Tel:[phone]
www.rms-reliability.com
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RMS Ltd
[email protected]

HS-620/630 User Guide
QM014 Issue 6
QF056 Issue 1 Release
Customer Recalibration Log Sheet for HS-620 & HS-630 Vibration Meter Kits
Z:\Engineering\QF056 (Customer Calibration log)
1. Remove the inapplicable model number from the Model No. line in calibration sheet below (HS-620/630).
2. Print out a colour copy of this page.
3. Enter the Serial number, sign the calibrated by and date the date of calibration.
4. Cut out the certificate of calibration and include this with the items.
CERTIFICATE OF CALIBRATION
We certify that this product has been calibrated in
accordance with our manufacturing procedures,
using calibrated equipment traceable to UK national
standards, to ensure that the product meets the published
Specifications.
Model No. HS-620/630 Serial No. ___________
Calibrated By ______ Date of Calibration _________
RMS Ltd
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No.42 Goldcrest Close
Longridge Park
Colchester, Essex
CO4 3FN, England.
Tel: [phone]
[email protected]
www.rms-reliability.com

HS-620/630 User Guide
QM014 Issue 6
Certicate of Calibration
Certicate of Calibration
Model No:
Serial No:
Calibrated By:
Date of Calibration:
Model No:
Serial No:
Calibrated By:
Date of Calibration:
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HS-620/630 User Guide
QM014 Issue 6
Certicate of Calibration
Certicate of Calibration
Model No:
Serial No:
Calibrated By:
Date of Calibration:
Model No:
Serial No:
Calibrated By:
Date of Calibration:
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HS-620/630 User Guide
QM014 Issue 6
Certicate of Calibration
Certicate of Calibration
Model No:
Serial No:
Calibrated By:
Date of Calibration:
Model No:
Serial No:
Calibrated By:
Date of Calibration:
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