Operator’s Manual
Model 287a
Ionizer Performance Analyzer
P/N 0340172
287a-1/100
V1.13
040811
100 Housel Ave PO Box 535 Lyndonville NY 14098
585-765-2254
fax: 585-765-9330 monroe-electronics.com
CONTENTS
Specifications
............
Section 1
..........................
Page 1
General Information
....
Section 2
..........................
Page 2
Operation
Maintenance
................
Sect
ion 4
..........................
Page 7
Glossary
......................
Section 5
..........................
Page 8
References
..................
Section 6
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Page 9
Warranty and Repair Information
.................
Back Cover
Specifications .......................................................... Page 1
Accessories included............................................... Page 1
What this instrument does ....................................... Page 1
Getting Started, a TutorialSection 3..................... Page 3
Confidence Check — Three steps to get going........ Page 3
Further familiarization .............................................. Page 4
Test results.............................................................. Page 5
The Set-up Menu..................................................... Page 6
Precautions ............................................................. Page 7
Cleaning .................................................................. Page 7
Battery..................................................................... Page 7
Calibration ............................................................... Page 7
Copyright© 1999
Monroe Electronics, Inc.
Printed in USA
Specifications and procedures subject to change without notice.
Section 1
SPECIFICATIONS:
Charger: 1100 volts, selectable polarity
Fieldmeter:
Accuracy
Zero Drift <4V in 90s, 2V typical
Trip points: Fixed 1000V and 100V
Charge plate: 1.7”x4” (10.6 inches periphery)
Capacitance 25pF
Self-discharge <10% of full scale in 200s
Display: 2x16 LCD, >5 updates per second
Timer 200.0s maximum, 0.1s resolution
Fieldmeter 1250V, 1V resolution
Sensors:
Humidity
Temperature 2ºC typical
Oper. temp.: 25ºC, 10ºC
Battery: 9 volt NEDA #1604A or equivalent alkaline (>40 hour life or >1300
Dimensions: 8.1x4x1.9 inches (206x102x48 mm)
Weight: 1lb, 6 oz. (0.63 kg)
5% of reading, 2% typical
5% typ. from 10% to 90%RH @25ºC
charge cycles). Longer life may be achieved by using 9-volt lithium.
Accessories included:
Carrying case
Banana patch cord
Alligator clip with boot
Battery
This manual and a manual supplement
What this instrument does —
Model 287a IPA meets and far exceeds the basic requirements of ESD Association
(Draft)
Susceptible Items – Periodic Verification of Air Ionizers
Model 287a IPA performs manual or automatic decay and balance tests for periodic
verification of ionization equipment and stores the results and averaged decay times for
up to ten manual tests and up to ten complete automatic test sequences.
Provides real-time measurement and display of temperature and relative humidity.
Performs self-tests.
Battery powered and portable, sets up in seconds.
Standard Practice 3.3 for the Protection of Electrostatic Discharge
.
Section 2
GENERAL INFORMATION
The IPA 287a performs manual or automatic decay and balance tests for periodic
verification of ionization equipment. It then stores the results and averaged decay times for
up to ten manual tests and up to ten complete automatic test sequences. Temperature and
relative humidity are displayed real-time and recorded with the test data.
All instrument functions are controlled by four pushbuttons.
Display contrast can be adjusted via access hole in case back.
In DECAY mode a built-in high voltage generator charges the plate to over 1050 volts.
During the test the plate will discharge toward zero in the presence of ionization. The
elapsed time of decay between 1000 volts and 100 volts is displayed.
USER NOTE — For very fast decay times – faster than one second – ZERO errors may
occur.
In the BALANCE mode, isolated plate voltage, test duration Min and Max voltages are
displayed.
Self-tests include battery check and tests for functional errors.
Memory is non-volatile. Setup and data are retained during battery replacement.
The specifics of usage of the Model 287a for periodic verification of air ionizers are given in
detail in ESD Association (Draft)
Discharge Susceptible Items – Periodic Verification of Air Ionizers.
Standard Practice 3.3 for the Protection of Electrostatic
Section 3
OPERATION
Getting Started, a Tutorial
Confidence Check – Three steps to get going —
If you received this instrument directly from the factory, a battery was included but not
installed, memory was cleared and default settings are effective. The following will
familiarize you with your new Ionizer Performance Analyzer Model IPA 287a:
1) Install battery
a) Remove the two crosspoint screws from the battery compartment cover.
b) Carefully lift the cover off of the compartment.
c) Insert the battery, refer to label for orientation.
d) Replace the cover.
2) Demonstrate basic functions. Pressing a single button and releasing within two seconds
controls basic functions.
a) Press and release ‘ON-OFF’. The display will briefly show information about the
instrument and then the battery voltage. A low battery condition will present an error
message.
main menu startup screen will show a blank voltage, memory usage status,
The
relative humidity, present temperature and battery voltage.
NOTE — If the instrument has been used it may display the option of clearing the
memory. Do so by scrolling to “Y” with
b) Press and release ‘AUTO’. This will start the first automatic test sequence:
i) The instrument performs an autozero.
ii) The floating plate is charged to >+1050 volts.
iii) The plate begins to discharge. If allowed to discharge to <+1000
volts the timer will start at +1000 volts.
iv) This test is the first automatic decay test. The first test in an
automatic sequence is always positive. The test is labeled ‘
(Automatic Test Sequence
tests], and the test voltage is
Abort this test by pressing the ‘AUTO’ button again (‘CANCEL’).
or key then press ‘ENTER’.
1, Test Number 1 [in a sequence of 6
+ [positive]).
11+’
c) Press and release ‘+ CHARGE’. This will start a manual test where the test voltage
is positive.
(i) The instrument performs an autozero.
(ii) The floating plate is charged to >+1050 volts.
(iii) The plate begins to discharge. If allowed to discharge to <+1000 volts
the timer will start at +1000 volts.
(iv) This is a single positive manual decay test. The test is labeled ‘
Manual, Test 1, + [positive]).
(
M1+’
Abort this test by pressing the ‘CANCEL’ button.
d) Use the ‘
CHARGE’ button similarly to perform negative manual decay tests. Up to
ten manual decay tests may be run in any polarity order. The ten tests will be
labeled
1 thru 0 with the polarity indicated. Thus, the 5
th
test might be labeled ‘M5’.
3) Shut the instrument off (press and release ‘ON-OFF’). You will need at least an ionizer
and a ground connection to proceed.
Further familiarization —
In order to become more familiar with the accumulation and presentation of data we will
perform two automatic test sequences and a few manual tests and then examine the results:
1. Set up the ionizer.
2. Ground the IPA 287a. A ground jack is provided on the side of the instrument case.
3. Access the main menu. The display should show 0% values for A
anual memory usage.
M
If a message prompts you to
a) Scroll to ‘Y’ with either the
ClrData (clear data),
or button.
utomatic and
b) Accept this by pressing ‘ENTER’.
4. Run an automatic test sequence —
a) Press ‘AUTO’.
b) Let the test run its course. This is ‘
i) Six decay tests are run. These are in the order +++
depending on the current autosequence setup.
ii) A balance test is run. The duration of the balance test may be any value
between 10 and 90 seconds or it may be turned off in the SETUP menu.
Test 1’.
or +++
iii) The test results are displayed at the end of the test. The results are
displayed in three windows which may be scrolled with either the
button. The first window shows the positive and negative decay times
(from 1000 volts to 100 volts) for tests number 1 and 2 in the sequence.
The second window shows decay times for test number 3 and the
average times for three + and three – decay tests. The third window
shows the + and – balance peak voltages and the temperature and
humidity taken during the test sequence.
c) Press ‘ENTER’ to return to the main menu.
or
d) Repeat a, b and c to gather a second set of data. This will be ‘
Test 2’.
5. Run manual decay tests —
a) Press and release ‘+ CHARGE’ and let the first manual decay test run its
course and display a result. That manual decay test will be labeled ‘
M1+’. To
return to the main menu, press ‘ENTER’.
b) Press and release ‘+CHARGE’ again and run the test to completion. This
second manual decay test will be labeled ‘
M2+’. To abort one of these tests at
any time during the test press the button that got the test started.
c) Return to the main menu. Press and release ‘
decay test will be labeled ‘
M3’ when completed. Return to the main menu.
CHARGE’. This third manual
6. Run manual balance tests —
a) Press and hold either the
or button until Balance test is indicated on the
display then release. This will start your fourth manual test. It will be labeled
M4B’ when finished. Return to the main menu.
‘
b) Repeat for a fifth manual test. This test will be labeled ‘
M5B’. Note that if you
hold the button down too long to start the test, the test will be nullified.
Following test ‘
M5B’, return to the main menu. The memory usage will be
displayed as ‘A20%M50%’. You have conducted 2 out of 10 automatic
sequences and 5 out of 10 manual tests.
7. At this point, you may elect to shut the equipment down and retire to a different
location to contemplate the results.
Test results —
Press and release the ‘ON-OFF’ button. You will be prompted for a Y/N? response to the
ClrData (clear data) question. NO!! Press ‘ENTER’ to accept “N”. That will take you to the
main menu while retaining the data.
To display the data, press and hold the ‘SETUP’ button (same button as ‘ON-OFF’) until the
display goes past ‘Off
’ and shows the word ‘Set-up’, then release. If you hold the button too
long the action will be nullified.
To review the data, press ‘ENTER’ to accept and use the
or keys to scroll. Press
‘ENTER’ when you are done to return to the main menu.
The Set-up Menu —
The Set-up menu allows the user to modify several functions of the IPA 287a. You have
already accessed the Set-up menu above to review your data. To enter the Set-up menu
from the main menu, press and hold the ‘SETUP’ button until the display goes past ‘Off’ to
‘Set-up’. To scroll the items, use the
or keys. The key scrolls down from the top of
the logical list. To EXIT the Setup menu at any time, press ‘ON’. Items are as follows:
RvwData — Review Data. ‘Enter’ to review data or scroll to next item.
1.
ClrData — Clear Data. ‘Enter’ prompts Y/N? Use or key to select, ‘ENTER’ to
2.
execute.
Auto Seq — Auto Sequence. ‘Enter’ presents options. or key selects option.
3.
‘ENTER’ accepts choice. Default is +++
Tst dly — Test delay. Delay between automatic decay tests. Range is 0 to 30 seconds.
4.
.
Default is 5 seconds.
Bal (Y/N) — Balance test included in automatic sequence? Default is “Y”
5.
Bal dur — Balance test duration. Over what period of time to you wish to test ionizer
6.
balance if the balance test is enabled. Range is 10 to 90 seconds. Default is 60
seconds.
AutoShtDwn — Auto Shut Down. Time before automatic instrument shutdown on lack
7.
of activity. Battery saver. Range is 1 to 15 minutes. Disable by setting to ‘0min’. Default
is 1 minute.
Fac. Deflt — Reset factory defaults. ‘ENTER’ prompts “Y/N?” response. Resetting
8.
defaults does
9.
Exit
not disturb accumulated data.
Section 4
MAINTENANCE
Precautions —
User maintenance should be limited to keeping the instrument clean and free from physical
damage. Store the instrument in its protective carrying pouch when not in use. Do not allow
any object to come in contact with the white insulators under the measurement plate. Do
not wrap cords around these insulators.
Cleaning —
If self-discharge becomes excessive (out of spec.), clean the insulators with a clean swab
and a 70%/30% mix of clean technical grade isopropyl alcohol and de-ionized water.
Fingerprints and other contaminants may be removed from the case with a clean lint-free
cloth dampened in the same solution. DO NOT use soap or detergent.
Battery —
Need for battery replacement is indicated by a warning message whenever the battery
voltage persistently dips below 7.5 volts. A fresh battery should be installed when this
occurs. The battery should be removed if the unit is to be stored for an extended period of
time. Removal of the battery when the unit is off does not disturb settings or data.
Calibration —
Calibration is not a user function and is beyond the scope of this manual. Calibration
information is available from the factory. Monroe Electronics recommends annual
calibration and/or when the instrument is damaged or repaired or where called for more
often by contract. We offer repair and calibration services for a fee.
Section 5
GLOSSARY
or
or
A Refers to Automatic test
Adjust Displays while plate voltage is being adjusted to 1050 volts
Auto Seq See The Set-up Menu (Page 6)
AutoShtDwn See The Set-up Menu (Page 6)
Bal See The Set-up Menu (Page 6)
Bal dur See The Set-up Menu (Page 6)
C Celsius temperature
Chrg Indicates that the plate is being charged
ClrData See The Set-up Menu (Page 6)
Decay Indicates that the plate voltage is decaying
Delay Pause between auto tests
Enter When displayed, press ENTER to view or modify the present option
Err Decay>200sec Voltage did not decay to 100
Exit See The Set-up Menu (Page 6)
Fac. Deflt See The Set-up Menu (Page 6)
M Refers to Manual test
MDA Average times for Manual Decay tests
MemUsed Shows percentage of Automatic and Manual memory currently in use
Min Minutes (see AutoShtDwn and The Set-up Menu (Page 6)
Mn Min voltage in balance tests
Mx Max voltage in balance tests
MnB Balance results for Manual test n where n is test number
Mn+ or Mn
MnTH Temperature and Humidity data for Manual decay test n
NAD Average Decay times for automatic sequence N
NBa Balance results for automatic sequence N
NnD+ or NnD
NTH Temperature and Humidity for automatic sequence N
Null Results from holding any primary key too long — reverts to main
Off If ON/OFF key is released while Off is displayed, the unit will be shut
ON=EXIT Press ‘ON’ key to exit Set-up menu
RH Relative Humidity in percent
RvwData See The Set-up Menu (Page 6)
Sec or s Time in seconds
Set-Up Release key to enter Set-Up mode
Tst dly See The Set-up Menu (Page 6)
V Volts
Ver Firmware version
Zero Indicates that the instrument is being autozeroed
Blank voltage (Main Menu Startup screen)
Polarity indicator (positive or negative voltage)
Scroll up or down list
Decay time for Manual test n where n is test number (1-0)
Decay times for automatic test number n (1-3) in test sequence N (1-
0)
display
off
Section 6
REFERENCES
ESD Association (Draft) Standard Practice 3.3 for the Protection of Electrostatic Discharge
Susceptible Items – Periodic Verification of Air Ionizers
ESD Association, Inc.
7900 Turin Rd.
Building 3, Suite 2
Rome, NY 13440-2069
Phone (315) 339-6937
Fax (315) 339-6793
eosesd@aol.com
http://www.eosesd.org
Other materials listed as “Normative References” in this document are:
ESD Association Standard —
ANSI/EOS/ESD-S3.1 –Ionization
ESD Association Advisory – ESD ADV – 3.2 –
Selection and Acceptance of Air Ionizers
ESD Association Advisory – ESD ADV – 1.0 –
Glossary
is available from:
ESD Association Advisory – ESD ADV – 2.0 –
Handbook
Monroe Electronics, Inc. does not supply copies of standards or advisories.
WARRANTY
Monroe Electronics, Inc., warrants to the Owners, this instrument to be free from defects in
material and workmanship for a period of two years after shipment from the factory. This
warranty is applicable to the original purchaser only.
Liability under this warranty is limited to service, adjustment or replacement of defective parts
(other than tubes, fuses or batteries) on any instrument or sub-assembly returned to the factory
for this purpose, transportation prepaid.
This warranty does not apply to instruments or sub-assemblies subjected to abuse, abnormal
operating conditions, or unauthorized repair or modification.
Since Monroe Electronics, Inc. has no control over conditions of use, no warranty is made or
implied as to the suitability of our product for the customer’s intended use.
THIS WARRANTY SET FORTH IN THIS ARTICLE IS EXCLUSIVE AND IN LIEU OF ALL
OTHER WARRANTIES AND REPRESENTATIONS, EXPRESS, IMPLIED OR STATUTORY
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. Except for obligations expressly undertaken by Monroe Electronics, in this
Warranty, Owner hereby waives and releases all rights, claims and remedies with respect to any
and all guarantees, express, implied, or statutory (including without limitation, the implied
warranties of merchantability and fitness), and including but without being limited to any obligation
of Monroe Electronics with respect to incidental or consequential damages, or damages for loss
of use. No agreement or understanding varying or extending the warranty will be binding upon
Monroe Electronics unless in writing signed by a duly authorized representative of Monroe
Electronics.
In the event of a breach of the foregoing warranty, the liability of Monroe Electronics shall be
limited to repairing or replacing the non-conforming goods and/or defective work, and in accordance with the foregoing, Monroe Electronics shall not be liable for any other damages, either
direct or consequential.
RETURN POLICIES AND PROCEDURES
FACTORY REPAIR:
Return authorization is required for factory repair work. Material being returned to the factory for
repair must have a
765-2254 and ask for Customer Service.
Material returned to the factory for warranty repair must be accompanied by a copy of a dated
invoice or bill of sale, which serves as a proof of purchase for the material.
Repairs will be returned promptly. Repairs are normally returned to the customer by UPS within
ten working days after receipt by Monroe Electronics, Inc. Return (to the customer) UPS charges
will be paid by Monroe Electronics on warranty work. Return (to the customer) UPS charges will
be prepaid and added to invoice for out-of-warranty repair work.
EXPEDITED FACTORY REPAIR:
All material returned to the factory by air or by an overnight service will be expedited. Expedited
factory repairs will be returned to the customer by the same mode of transportation by which the
material was returned to the factory for repair (i.e., material returned to the factory by an overnight
service will be returned to the customer by an overnight service).
NOTE: Return (to the customer) transportation expenses for expedited factory repairs will always
be at the expense of the customer despite the warranty status of the equipment.
FACTORY REPAIRS TO MODIFIED EQUIPMENT:
Material returned to the factory for repair that has been modified will be not tested unless the
nature and purpose of the modification is understood by us and does not render the equipment
untestable at our repair facility. We will reserve the right to deny service to any modified
equipment returned to the factory for repair regardless of the warranty status of the equipment.
Return Material Authorization number. To obtain an RMA number, call 585-
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