Balmac 205ce User manual

OPERATION MANUAL
MODEL 205ce
VIBRATION
METER
(INCLUDES MODEL 205Mce)

Page 2 Model 205ce and 205Mce Operation Manual
CONTENTS
1. Switch Panel - Functions 2
2. Connections - Accessories 2
3. Operation 3
8. Measurements 3
9. Battery Replacement 9
9. Disposal 9
11. Specifications 11
Model 205ce & 205Mce 11
11. Model 601 Accelerometer
12. Severity Chart Back Cover
Balmac assumes no responsibility for errors or
omissions. Neither is any liability assumed for
damages resulting from the use of the information
contained herein.
Specifications are subject to change without prior
notice.
WARNING: Exercise extreme caution when
performing any task on rotating machinery.
Failure to do so may result in equipment damage
or personal injury. Familiarize yourself with the
equipment before attempting to perform any
operation.
WARNING: ROTATING MACHINERY HAS
POTENTIALLY DANGEROUS MOVING PARTS
AND SHOULD BE GUARDED IN ACCORDANCE
SAFETY TO SAFETY REGULATIONS.
This manual is for the Balmac Vibration Meters
Models 205ce and 205Mce.
SWITCH PANEL - FUNCTIONS
1. OFF/ON (Grey) - Self-latching button powers
the Model 205 ce on and off.
2. DISP, VEL, ACC (Black) - Self-latching,
vibration amplitude buttons (see Section 4
“Measurements” for a detailed explanation of
the merits of each).
3. RANGE BUTTONS (200, 20, 2, Very Low
Range) (White) - Self-latching Full Scale
Range selector buttons. (205M ce = 2000,
200, 20 VLR).
CONNECTIONS - ACCESSORIES
1. Connect the Model 601 Pickup to the Model
059-5' Pickup Cable.
2. Select appropriate mounting accessory (Model
052 Magnetic Base Clamp or Model 051-28
Removable Probe Tip ). Connect to the Model
601 Pickup.
3. Connect cable and pickup assembly to the
Model 205ce.

Page 3 Model 205ce and 205Mce Operation Manual
OPERATION
1. Depress the OFF/ON switch to power the
instrument “ON”.
2. Select then depress one of the black
Amplitude Measurement buttons:
ACC = Acceleration = g’s (peak)(in/sec²)
205Mce = g’s mm/sec²
VEL = Velocity = Inches Per Second (peak)
205Mce = Velocity = mm/sec
DISP = Displacement = Mils (peak to peak)
205Mce = Displacement = µm
3. Select then depress one of the gray Range
buttons (2, 20, 200 or Very Low
Range)(205M ce = 20, 200, 2000 or Very
Low Range). Change the Range button to
another range if necessary until the
AMPLITUDE meter reads without indicating
an overrange condition.
4. Over Range:
Display = 1 __ __ __ [1 with 3 blank digits]).
5. Read vibration amount directly.
Accelerometer - Model 601
The Balmac Model 205 ce Vibration Meter uses
the Model 601 Accelerometer. The 601 is a
compact, general purpose 100 mV/g
Accelerometer for direct measurement of
vibration amplitude. The pickup’s axis of
sensitivity is perpendicular to the mounting base.
The pickup may be used and mounted in any
direction (horizontal, vertical, axial).
The best recommended permanent mounting
method is using a 1/4-28 UNF stud on a clean
flat surface, or the Model 052 Magnetic Base.
CAUTION: The mounting stud must not extend
into the pickup more than 0.2". Hand tighten the
pickup. DO NOT WRENCH THE PICKUP
ONTO THE MOUNTING.
NOTE: DO NOT SLAM OR BANG THE
ACCELEROMETER WHEN MOUNTING WITH
THE MAGNETIC BASE. THIS CAN DAMAGE
THE PICKUP.
MEASUREMENTS
VELOCITY is the recommended setting for
machinery severity vibration readings with the
Model 205 ce Vibration Meter. The destructive
forces generated in today’s higher speed
machines are more proportional to vibration
velocity than either displacement or acceleration.
For example, it is very unusual for someone to
arrive on the scene of an automobile accident
and ask “How far did they come?”
(Displacement), or “How fast did they stop?”
(Acceleration). The common question is “How
fast were they going when they hit?” (Velocity)
DISPLACEMENT is the peak to peak distance a
part is moving measured in “mils.” One mil
equals one thousandth of an inch (.001"). When
measuring in mils, the operating speed must be
known to establish a vibration condition limit.
(Example: a cooling tower fan operating at 175
RPM vibrating at 10 mils may be considered in
good condition. An electric motor operating at
1750 and vibrating at 10 mils typically requires
immediate attention.)
ACCELERATION - is useful for detecting the
deterioration and defects or rolling element
bearings and gears. An acceptable level for
most machines is less than 0.5 g’s. If the level is
higher, the bearing may be defective and should
be analyzed. An acceptable level of g’s can be
established by comparing similar machines and
by studying vibration trends.
Table 1: Comparison of Velocity, Displacement and Acceleration
SPEED
RPM
(cpm X 60)
DISPLACEMENT
MILS
(Peak to Peak)
VELOCITY
IN/SEC
(Peak)
ACCELERATIO
N
G’s
(Peak)
175 21.9 0.2 0.00945
1750 2.19 0.2 0.0945
17,500 0.219 0.2 0.945
175,000 0.0219 0.2 9.45

Page 4 Model 205ce and 205Mce Operation Manual
SECTION 5 - VIBRATION SEVERITY
The following vibration charts are recommended for determining machinery condition based on readings
taken with the Balmac Model 205 ce Vibration Meter:
VIBRATION WARNING LEVELS
The vibration levels listed below may be used as a guide for selecting and setting the limits on Vibration Transmitters and Vibration
Switches. The limits are intended to serve as a guide for machines of similar types, when measured in accordance with the
standard procedures for evaluating vibration. In some cases, requirements may be more or less stringent, or may not apply.
Reference ISO and ANSI standards.
VIBRATION VELOCITY CLASS OF MACHINERY
Vibration (ips) Class-1 Class-2 Class-3 Class-4
0.01 ips GOOD GOOD GOOD GOOD
0.02 ips GOOD GOOD GOOD GOOD
0.03 ips GOOD GOOD GOOD GOOD
0.06 ips FAIR GOOD GOOD GOOD
0.08 ips FAIR FAIR GOOD GOOD
0.1 ips ROUGH FAIR FAIR GOOD
0.2 ips N/A ROUGH FAIR FAIR
0.4 ips N/A N/A ROUGH FAIR
0.6 ips N/A N/A N/A ROUGH
0.8 ips N/A N/A N/A N/A
1.0 ips N/A N/A N/A N/A
Class-1: Individual components, integrally connected with the complete machine in its normal operating condition.
Small Electric Motors, Precision Machines, Turbines
Class-2: Medium size machinery without special foundations, rigidly mounted engines, or machines on special foundations.
Gear Boxes, Pumps, M-G Sets, Fans
Class-3: Large prime movers mounted on heavy, rigid foundations.
Compressors, Blowers, Hammer mills, Engines
Class-4: Large prime movers mounted on relatively soft, light-weight structures.
Crushers, Reciprocating Machinery, Vibrating Conveyors

Page 5 Model 205ce and 205Mce Operation Manual
TROUBLESHOOTING
The following is a list of troubleshooting
questions:
Are the pickup and cable in good condition and
connected properly?
Is the power ON? Is the battery good?
Is the display on?
Are the switches inoperative, or experiencing
other switching problems?
Troubleshooting Guide
Symptom: No Display
Possible Cause: No power or supply voltage
Solution:
Check batteries. Replace if necessary. Check
OFF/ON switch.
Symptom: No Indication on Meter
Display
Possible Cause: No vibration signal
Solution:
Check vibration pickup and cable. Possible
defective pickup. Possible defective display.
Symptom: Amount Readings Unstable
Possible Cause: Machine defect. Improper
setup (low range)
Solution:
Check vibration pickup for proper installation.
Check for loose machine components. Verify
pickup and cable connections. Signal to noise
ratio is low (low range in displacement). Reduce
noise, increase Amplitude range, or change
Amplitude units.
TECHNICAL SUPPORT
For additional technical information, contact
Balmac. Additional information about vibration is
available in our Vibration Analysis Training
Manual and our “B” Book Series.
For information on vibration standards for ISO
and ANSI, contact Balmac or check the Internet.
All questions and problems should be directed to
the factory Monday through Friday, 8:00 A.M. to
5:00 P.M. Eastern Time at the following
numbers:
Telephone: [phone]
Email: [email protected]
Ship To: BALMAC, INC.
8205 Estates Pkwy, Ste N
Plain City, OH 43064-8080
SERVICE SUPPORT
The instrument is warranted for a period of two
years. It is recommended you contact Balmac
before returning equipment for service.
Instrumentation returned prepaid to Balmac
during the warranty period will be repaired or
replaced without charge if it has not been
subjected to misuse. Return freight is
chargeable. Equipment returned for service
should be packed in a suitable shipping
container.

Page 6 Model 205ce and 205Mce Operation Manual
PARTS
REPLACEMENT & OPTIONAL PARTS - are
major assemblies identified by a Balmac Model
Number. Most of these parts are field
replaceable and do not affect the calibration of
the instrument. Replacement Parts are also
listed on Balmac’s published Price List.
Model # Part Description
205 ce Meter (English)
205M ce Meter (Metric)
601 Accelerometer Vibration Pickup
051-5' Coiled Pickup Cable
2-pin female socket to
BNC connector
052 Magnetic Base Clamp (Mount)
with 1/4-28 Thread Stud
032-A Carrying Case
Manual and Calibration
Certificate (NIST Traceable)
BATTERY
The Balmac Model 205ce Vibration Meters come
equipped with 4 Size AA 1.5 Volt standard
alkaline batteries. Alkaline batteries are
recommended for maximum operation time.
LOW BATTERY - a low battery symbol “Lo-Bat”
or “¹”, will display (with instrument power “ON”)
when the batteries needs replacement.
REPLACING BATTERIES - (procedure)
1. Turn the 205 ce “OFF”.
2. Remove two #4-32 Phillips-head screws
from back battery cover. Remove cover.
3. Locate battery holder and carefully remove
old batteries.
4. Insert new batteries as indicated by outlines
in bottom of battery compartment. Replace
cover and tighten screws.
DISPOSAL
This product complies with the WEEE Directive
(2012/19/EU) marking requirements. The affixed
label indicates that you must not discard this
electrical/electronic product in domestic
household waste. Product Category: with
reference to the equipment types in the WEEE
Directive Annex I, this product is classed as
category 9 “Monitoring and Control
Instrumentation” product. Do not dispose of this
product as unsorted municipal waste. You can
hand over your meter at your nearest community
E-waste collection point or return the meter to
Balmac Inc.

Page 7 Model 205ce and 205Mce Operation Manual
SPECIFICATIONS
AMPLITUDE RANGE:
English: (205ce) Displacement mils pk-pk (peak-to-peak)
Velocity in/sec pk (peak)
Acceleration g’s pk (peak)
Note: Very Low Range in units of 0.001 g’s, 0,001 in/sec, & micro-inches
Metric: (205Mce) Displacement micrometers (µm) peak-to-peak
Velocity millimeters-per-second (mm/sec) peak
Acceleration g’s millimeters-per-second squared (mm/sec2) peak
Note: Very Low Range in units of 0.001 g’s, 0,001 mm/sec, & mm/sec2
RANGE: Four selectable ranges with over-range indication for each range
MODEL 205ce English 205Mce Metric
High Range 200 = 0 to 199.9 2000 = 0 to 1999
Medium Range 20 = 0 to 19.99 200 = 0 to 199
Low Range 2 = 0 to 1.999 20 = 0 to 19
Very Low Range 0 to 199.9 0 to 199.9
SENSITIVITY:
MODEL 205ce English 205Mce Metric
Displacement: 0.000001 inch (0.001 mil) (1 micro-inch) 0.02 µm
Velocity: 0.001 inch/sec 0.02 mm/sec
Acceleration: 0.001 g 0.001 g
ACCURACY: 5% of Full Scale
FREQUENCY RANGE: 600 to +420,000 rpm (10 to +7,000 Hz)
DISPLAY: 3 ½ digit, numeric LCD, 3/4" characters with Low Battery indicator
INPUT: 100 mV/g Compact General Purpose Accelerometer, 80 g Peak
CONTROLS: Dedicated Function Pushbuttons
POWER: Size AA Alkaline battery (4)
OPERATING
TEMPERATURE: 32Eto 122EF (0Eto 50EC)
ENVIRONMENTAL: Relative humidity 0-95% non-condensing
DIMENSIONS:
Model205 ce 7.67" H x 3.97" W x 1.73" D (19 x 10 x 4 cm)
Carrying Case 13.5" H x 10.5" W x 4.5" D (34 x 26 x 11 cm)
WEIGHT: Unit & standard accessories 5 lbs (2 kg)
Unit & pickup <2 lbs (<1 kg)
ACCELEROMETER SPECIFICATION - Model 601
SENSITIVITY (±10%, 25EC) 100 mV/g
ACCELERATION RANGE: 80g peak
AMPLITUDE NON-LINEARITY 1%
FREQUENCY RESPONSE
±10% 0.7 - 9,000 Hz
±3 dB 0.4 - 14,000 Hz
RESONANCE FREQUENCY 30 kHz
TRANSVERSE SENSITIVITY 5% of axial
POWER REQUIREMENT 18 - 30 VDC
GROUNDING Case isolated, internally shielded
TEMPERATURE RANGE: -50Eto +120EC
VIBRATION LIMIT 500 g peak
SHOCK LIMIT: 5000 g pk
SEALING Hermetic
WEIGHT 62 grams
CASE MATERIAL 316L Stainless Steel
MOUNTING 1/4-28 UNF tapped hole
CONNECTOR TYPE: 2-pin, MIL-C-5015 Connector

Page 8 Model 205ce and 205Mce Operation Manual