Operators’ Manual Monroe Electronics, Inc. Model 288 Charge Plate Monitor P/N 0340174 288-1/100 V1.03 100 Housel Ave PO Box 535 Lyndonville NY 14098 1-800-821-6001 585-765-2254 fax: 585-765-9330 monroe-electronics.
CONTENTS Specifications Section 1 Specifications Accessories included What this instrument does Physical description General Information Page 3 Page 3 Page 4 Page 4 Section 2 CAUTION – SHOCK HAZARD Setup – First things first SETUP SYSTEM Menu M SETUP Menu A SETUP Menu OPTION Menu Operation Page 5 Section 3 Page 6 Page 6 Page 7 Page 7 Section 4 Manual operation Programming features Automatic operation Programming features Additional features Group and location Test parameter setups Data storage a
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Section 1 SPECIFICATIONS All specifications are referred to PLate VColtage unless otherwise specified. Charging Voltage: ±10 to ±1000 volts, differential adjustable 10 volts to 100 volts in 1 volt increments Zero Stability: <100mV/sec Timer: 0.1 to 999.9 seconds in 0.1 sec increments 1000 to 9999 seconds in 1 sec increments Start Voltages: 1000 volts ±0.
What this instrument does — As Ionizers were introduced to control static charges there became a need to test those ionizers to verify their performance. In about 1985 Ion Systems introduced the first charged plate monitor, followed by Monroe Electronics’ Model 268 and several other companies. These all used a fieldmeter sensing technology and became part of the ESD Association Standard 3.1.
Section 2 GENERAL INFORMATION Model 288 performs manual or automatic decay and balance tests for qualification and periodic verification of ionization equipment. It then stores the results and balance averages for manual tests and complete automatic test sequences up to a maximum of 1500 tests. Temperature and relative humidity are displayed real-time and recorded with the test data. All instrument functions are controlled by five key pushbuttons.
Section 3 SETUP First things first Upon power up, you are presented momentarily with an identification screen, which includes the software revision level and serial number of your unit. Within a few seconds, the MAIN screen is presented. This screen should show current date and time, ambient factors, power source information and current test number and prompt the operator to “Select Operation”. The test-numbering scheme begins with 1500 and displays the number of remaining tests.
A SETUP Menu: The A(uto) Setup screen works the same. OPTION Menu: Options are for display backlighting and auto power off. Highlight and press EDIT to view further options. The (A>) symbol indicates the current choice. Highlight desired choice and press ENTER to change or CANCEL to exit with no change.
Section 4 OPERATION MANUAL OPERATION: From the manual screen the user can choose to run a positive decay, negative decay or balance. Also the option exists to enter the group and location screen to select the proper designation for the ionizer under test. +/− − Decays – Once a decay test is selected the unit switches screens displaying the plate voltage, timer, group/location and test parameters.
AUTOMATIC OPERATION: Once the desired test parameters are set up, the user simply selects the “start” button to begin the tests. All the parameters are shown in the automatic screen. As soon as the start button is pushed the screen switches to the auto test screen and proceeds to run the prescribed number of decays and balance (only if balance is set to run via the setup). The unit moves automatically from one test to another until it has completed the programmed sequence.
ADDITIONAL FEATURES: Group and Location – By accessing this screen the tests can be organized to reflect the ionizers’ locations. There are up to 17 Groups available, with a maximum of almost 700 locations. The total number of group/locations available will vary depending on how extensive the tests are for the individual locations (i.e. how many decays are run for each ionizer). Up to 1500 tests may be run.
Section 5 MAINTENANCE Precautions — User maintenance should normally be limited to keeping the instrument clean and free from physical damage. Store the instrument in its protective carrying pouch when not in use. Cleaning — Fingerprints and other contaminants may be removed from the case with a clean lint-free cloth dampened in a 70%/30% mix of clean technical grade isopropyl alcohol and de-ionized water. DO NOT use soap or detergent.
Section 6 REFERENCES Documents associated with ionization: ESD Association Standard — ANSI/EOS/ESD-S3.1 –Ionization ESD Association Advisory – ESD ADV – 3.2 – Selection and Acceptance of Air Ionizers ESD Association (Draft) Standard – ESD DSP –3.3 – Periodic Verification of Air Ionizers ESD Association Advisory – ESD ADV – 1.0 – Glossary ESD Association Advisory – ESD ADV – 2.0 – Handbook Are available from: ESD Association, Inc. 7900 Turin Rd.
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.
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 Return Material Authorization number. To obtain an RMA number, call 585-765-2254 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.
