Monroe Electronics 287A User Manual
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
..........................
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
Loading...