Balmac 205ce User manual

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

Page 2 MODEL 205 ce
TABLE OF CONTENTS
SECTION TITLE PAGE
1. INTRODUCTION 3
Description 3
2. FEATURES 4
Batteries 4
Controls 4
Vibration Pickup 4
3. OPERATION 4
4. MEASUREMENTS 5
Velocity 5
Displacement 5
Acceleration 5
5. VIBRATION SEVERITY (TABLES) 6-7
6. TROUBLESHOOTING 8
7. SUPPORT 9
8. PARTS 9
9. DISPOSAL 9
10. APPLICATIONS 10
11. SPECIFICATIONS 11
Model 205 ce & 205M ce 11
(Back Cover). WARRANTY & SERVICE 12
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 205 ce and 205M ce.

Page 3 MODEL 205 ce
SECTION 1 - INTRODUCTION
Description
The Balmac Model 205 ce Vibration Meter
takes the guesswork out of machinery
maintenance and vibration studies.
There are many factors that can cause
excessive vibration in rotating machinery. These
include worn bearings and couplings; pipe and
foundation damage; broken mounting bolts;
misalignment and unbalance.
Vibration measurements (or a vibration
maintenance program) can help prevent these
types of failures by detecting machine problems
before anything serious happens.
Vibration measurements provide a quick check
of machinery condition. The readings from the
Model 205 ce are used for analysis and trending.
The Model 205 ce Vibration Meter is easy to
operate. It can be used by practically anyone for
checking the overall (broadband) vibration level
and vibration condition. The hand-held
instrument is lightweight and battery powered. It
measures the acceleration (g’s), velocity (inches
per second) and displacement (mils) of vibration.
The Model205M ce Vibration Meter is calibrated
in METRIC units.
Balmac Model 205 ce &205M ce Vibration Meter
The Model 205 ce Vibration Meter Kit includes: (1) Model 205 ce Vibration Meter with Batteries; (1) Model 601 Accelerometer
Vibration Pickup; (1) Model 059-5' Vibration Pickup Cable; (1) Model 052 Magnetic Base Clamp; (1 ea) Model 032A Carrying Case,
Manual and Calibration Certificate (not shown).

Page 4 MODEL 205 ce
SECTION 2 - FEATURES
Battery
The Balmac Model 205 ce 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.
Controls
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).
Vibration Pickup
The Balmac Model 205 ce Vibration Meter uses
the Model 601 Pickup. The Model 601 connects
to the Model 059-5' Straight Pickup Cable (2-
conductor, shielded cable). The 059-5' cable
connects to the input connector at the top of the
Model 205 ce.
It is recommended that the Model 601 Pickup
be mounted on 1/4-28 UNF stud, or on the
Model 052 Magnetic Base Clamp.
NOTE: DO NOT SLAM OR BANG THE PICKUP
WHEN MOUNTING WITH THE MAGNETIC
BASE. THIS CAN DAMAGE THE PICKUP.
SECTION 3 - OPERATION
1. Connect the Model 601 Pickup to the Model
059-5' Pickup Cable.
2. Select appropriate mounting accessory
(Model 052 Magnetic Base Clamp) and connect
to the Model 601 Pickup.
3. Connect cable and pickup assembly to the
Model 205 ce.
4. Depress the OFF/ON switch to power the
instrument “ON”.
5. Select then depress one of the black
Amplitude Measurement buttons:
ACC = Acceleration = g’s (peak)(in/sec²)
205M ce = g’s mm/sec²
VEL = Velocity = Inches Per Second (peak)
205M ce = Velocity = mm/sec
DISP = Displacement = Mils (peak to peak)
205M ce = Displacement = µm
6. 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. (Over Range
Display = 1 __ __ __ [1 with 3 blank digits]).
Read vibration amount directly.
NOTE: The best recommended permanent
mounting method is using a stud on a clean flat
surface (like on the 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. 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). See
Vibration Pickup specification on Page 11.

Page 5 MODEL 205 ce
SECTION 4 - 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 6 MODEL 205 ce
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 7 MODEL 205 ce

Page 8 MODEL 205 ce
SECTION 6 - 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: [1] Check power source
(batteries). Replace if
necessary.
[2] Check power OFF/ON
switch.
Symptom: No Indication on Meter Display
Possible
Cause: No vibration signal
Solution: [1] Check vibration pickup and
cable.
[2] Possible defective pickup.
[3] Possible defective display.
Symptom: Amount Readings Unstable
Possible
Cause: [1] Machine defect
[2] Improper setup (low range)
Solution: [1] Check vibration pickup for
proper installation.
[2] Check for loose machine
components.
[3] Verify pickup and cable
connections.
[4] Signal to noise ratio is low
(low range in displacement).
Reduce noise, increase
Amplitude range, or change
Amplitude units.
SECTION 7 - SUPPORT
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 9 MODEL 205 ce
SECTION 8 - 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
059-5' Straight Pickup Cable
MS3106 (female socket) to
BNC (pin)
052 Magnetic Base Clamp (Mount)
with 1/4-28 Thread Stud
032-A Carrying Case
Manual and Calibration
Certificate (NIST Traceable)
SECTION 9 - 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 10 MODEL 205 ce
SECTION 10 - APPLICATIONS
The Balmac Model 205 ce Vibration Meter is used for machinery maintenance and vibration studies for:
Fans
Motors
Pumps
Compressors
Condition Monitoring
Rotating Machinery Preventive Maintenance
Vibration monitoring is useful in all types of industrial applications including:
Manufacturing
Commercial Buildings
Processing Plants
Pumping Operations
Automotive Assembly
Power Generation
Engineering
Marine Operations
Research & Development

Page 11 MODEL 205 ce
SECTION 11 - SPECIFICATIONS
AMPLITUDE RANGE:
English: (205 ce) mils pk-pk (peak-to-peak) Displacement
in/sec pk (peak) Velocity
g’s pk (peak) Acceleration
Note: Very Low Range in units of 0.001 g’s, 0,001 in/sec, & micro-inches
Metric: (205M ce) 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 205 English 205M 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:
Displacement: 0.000001 inch (0.001 mil) (1 micro-inch) (0.0254 µm)
Velocity: 0.001 inch/sec (0.02 mm/sec)
Acceleration: 0.001 G
ACCURACY: 5% Full Scale instrument [see performance specifications on pickup]
FREQUENCY RANGE: 600 to +420,000 rpm (10 to +7,000 Hz)
DISPLAY: 3 ½ digit, numeric LCD (with Low Battery indicator)
INPUT: Industrial ICP Accelerometer (100 mV/g)
OUTPUT: Signal for Headphones 1/8" Mono jack
CONTROLS: Color-coded Function pushbuttons for all measurements
POWER: Four Size AA standard alkaline batteries 1.5 Volts
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 (19.5 x 10.1 x 4.4 cm)
Carrying Case 13.5" H x 10.5" W x 4.5" D (34.3 x 26.7 x 11.4 cm)
WEIGHT: Unit & standard accessories 5 lbs (2.3 kg)
Unit & pickup <2 lbs (<1 kg)
Pickup 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

For Complete Warranty and Service
Information and Terms of Sale,
please see our website at
www.balmacinc.com