711-3M

Charge Analyzer 711 Operating Instructions August 2005 78-8136-3182-3 2 78-8136-3182-3 Table of Contents Safety Information .................................................................................................................................................. 3 1. General Function and Description ................................................................................................................... 5 2. Accessories ....................................................................................................................................................... 6 3. Specifications ................................................................................................................................................... 7 4. Fieldmeter Operation ........................................................................................................................................ 8 5. Voltmeter Operation ....................................................................................................................................... 10 6. Static Decay Time & Balance Operation ....................................................................................................... 13 7. Remote Field Sensor Probe Operation ........................................................................................................... 18 8. Data Recording & Analog Outputs ................................................................................................................ 20 9. Verification Procedure .................................................................................................................................... 21 10. Maintenance/Calibration/Repair of 3M™ Charge Analyzer 711 & Remote Field Sensor Probe .................. 23 378-8136-3182-3 Safety Information Read, understand, and follow all safety information contained in these instructions prior to use of the 3M™ Charge Analyzer 711. Retain these instructions for future reference. Intended Use: The 3M Charge Analyzer 711 is intended for use in testing the performance of static control products. This device is designed for use as specified in the operating instructions. It is intended for use in an indoor environment and has not been evaluated for other uses or locations. EXPLANATION OF SIGNAL WORD CONSEQUENCES DANGER: Indicates a potentially hazardous situation, which, if not avoided, will result in death or serious injury and/or property damage. WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury and/or property damage. CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury and/or property damage. CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in property damage. EXPLANATION OF PRODUCT SAFETY LABEL SYMBOLS Attention: Read accompanying documentation Warning: Risk of Electric Shock Ground Symbol: Ground device according to instructions.  WARNING To reduce the risks associated with hazardous voltage, which if not avoided, could result in death or serious injury: • Connect the attached ground wire on the rear panel to an electrical ground before operating. • Refer to 3M™ Charge Analyzer 711 Operating Instructions manual. 4 78-8136-3182-3  WARNING To reduce the risks associated with hazardous voltage: • Connect the attached ground wire on rear panel to an electrical ground before operating the analyzer; • Do not use if the 3M™ Charge Analyzer 711 housing or power supply are damaged; • Do not attempt to modify or repair — no user serviceable parts inside — contact 3M Service for repair. To reduce the risks associated with fire or explosion: • Do not operate the analyzer in an explosive environment. The analyzer is not designed to be intrinsically safe.  CAUTION To reduce the risks associated with use of alcohol for cleaning: • When cleaning the analyzer per the operating instructions, follow the MSDS procedures for safe use of the required cleaning solution. To reduce the risks associated with environmental contamination from the NiMH battery pack and circuit boards containing lead-bearing solder: • The charge analyzer contains a NiMH battery pack and circuitry that contains lead in the solder. At the end of service life, dispose of the charge analyzer in accordance with federal, state and local requirements. CAUTION To reduce the risks associated with property damage due to improper repair or modification: • Do not attempt to modify or repair — no user serviceable parts inside — contact 3M Service for repair. To reduce the risks associated with property damage from improper maintenance: • Unit must be cleaned and checked periodically for correct operation. Important Notes • Avoid extreme discharge of the rechargeable batteries. If the batteries require charging, do not allow the unit to sit idle for a period of time without first fully charging the batteries. • Do not use the charge analyzer 711 or Remote Field Sensor Probe in areas where high AC or DC field strengths are present. • Do not discharge to the sensor element of the charge analyzer 711 or 3M™ Remote Field Sensor Probe. • Do not allow any object to contact the sensor elements. Permanent damage to the sensor elements may occur. When not in use, keep sensor heads protected with supplied covers. • AC fields with frequencies >1Hz cannot be measured. 578-8136-3182-3 1. General Function and Description Note: To obtain the maximum understanding and use of this instrument it is recommended that the instruction manual be thoroughly reviewed. Follow Setup & Use procedures, observing all safety messages and important notes listed in each of the operating functions. The 3M™ Charge Analyzer 711 is an electronic test instrument designed for ease of use. The lightweight and compact construction offers great versatility in the workplace. It can be used as a laboratory analytical tool, evaluating the performance of ionizing equipment, static-protective packaging, worksurfaces, and personnel grounding systems. It is also very effective for use as a demonstration tool in employee static awareness training programs. All parameter settings are controlled via a built-in EEPROM. When the Charge Analyzer is switched off, all last set parameters are stored in an EEPROM. These parameters are defaulted to when the analyzer is switched on again. In case of a malfunction, the unit will display a corresponding message and then automatically switch off. The analyzer operation works according to the fieldmill-principle. The fieldmeter is a parametric amplifier. An electrostatic field induces a charge on the sensor electrode, generating an AC current that is proportional to the field strength. An amplifier measures this current without reducing the energy of the electrostatic field in average time. The analyzer is powered by built-in rechargeable NiMH-batteries or an AC wall plug-in adaptor. When the unit is powered from the rechargeable batteries, the LCD-display will not be back illuminated to extend battery life. This power saving feature will initiate within 60 seconds after the last measurement or button depression. Also during battery operation, the continuous LED-bar indication changes to a single (momentary) action. In case of a low battery power condition, the analyzer automatically switches off, first displaying LOW BATTERY then SWITCHING OFF UNIT. If this occurs, continued operation of the analyzer can be maintained through the AC adaptor. Recharge time is approximately 14 hours with unit off, when batteries are fully discharged. Important Note • Avoid extreme discharge of the rechargeable batteries. If the batteries require charging, do not allow the unit to sit idle for a period of time without first fully charging the batteries. Two vertical LED bars indicating 0 – 100% charge level and polarity are located on the left and right sides of the front panel. The alphanumeric LCD-display is the information center of the analyzer and allows the user to observe the principles of static protection. The unit’s high accuracy makes it well suited for product performance analysis. All interfacing connections are made at the rear of the unit. The following outputs are available: The charge analyzer 711 can be connected to a y (t)-recorder via the +/- 2 volts analog output. Connection to a PC for data recording purposes is available through a RS232 data port. A Remote Field Sensor probe is connected through a 4-Pin circular socket located on the rear of the unit. The sensor operates on the same measurement principle as described above. This feature allows to the user to make measurements by means of a hand-held or fixed position probe in remote locations, where it may be impossible to position the analyzer. Measurement distances with the probe are 1, 2, 5, 10, & 20 centimeters. The built-in microprocessor automatically converts the measured field strength via the chosen distance into a charge of an equivalent potential in volts. The display automatically switches from volts to kilovolts. The following operating functions will be automatically activated, when the appropriate electrode or sensor is connected to the base unit. The charge analyzer 711 comprises of four types of independent operating functions: • Static fieldmeter sensor – Measuring electrostatic fields • Voltmeter - Measuring the potential on charged objects • Static decay time – Measuring charge-decay and balance of ionizing equipment by charge plate monitor (CPM) method. • Remote field sensor probe – Measuring the potential on charged objects in confined areas. Change between these operating functions will be verified on the display as CHANGE MODE OF OPERATION. 6 78-8136-3182-3 2.0 Accessories The 3M™ Charge Analyzer 711 is shipped in a durable black case with foam interior containing the following accessories: A. Cup electrode B. Plate electrode C. Cylinder electrode D. AC/DC adaptor, DC 12 V / 500 mA E. Sensor red cover F. PTFE measuring lead, 1m G. RS 232 interface cable H. 50 mm (2 inches) high conductive con- tainer with insulating handle I. Insulated bulldog clip J. Metal-spacers (3) with thread, 76 mm (3 in.) length K. Transport case L. Remote Field Sensor Probe, 711 RS for measuring electrostatic fields, with 2-meter cable & red cover. M. Software for Data Acquisition Operating instructions (Not Shown) Certificate of Conformity (Not shown) A C D E FG H I K L B J M 778-8136-3182-3 3. Specifications Dimensions: Base unit: (152 x 152 x 152) mm (6 x 6 x 6) inches Weight: 1,6 kg (3.53 lbs.) High voltage cascade: > 1100 V positive or negative (current limiting resistor: 10 MΩ) Power supplies: Built-in NiMH-rechargeable batteries, 1400 mAh - Recharge time approximately 14 hours (unit off) when batteries are fully discharged AC adaptor: secondary side, DC 12 V/500 mA Operating time (rechargeable batteries): 2 hours (approx.) with full charge. 1.5 hours (approx.) when using Remote Field Sensor Storage memory capacity: 128 k EEPROM (e.g. sufficient for approximately 100 CPM-measurements) Response time: 0 to 100 % _ 100 ms Impedance: 1015 Ω (PTFE-separators cleaned) Accuracy: ± 2.5 % of range end value (digitized) Analog Output ± 10% 25, 100, 500, & 5,000 VDC ± 5 % 1,000 VDC Operating functions: CPM (positive/negative/automatic), Voltmeter, and Fieldmeter Interfaces: Analog output ± 2v (± 1 V, in 500v range for voltmeter). Input to output ratio in Voltmeter Mode: 25vdc = 12.5 to 1, 100vdc = 50 to 1, 500vdc = 500 to 1, 1,000vdc = 500 to 1, 5,000vdc = 2500 to 1. Serial PC-COM RS232 Remote Field Sensor Probe, Model 711 RS: 34mm diameter - 190 gms (6.7 oz.) Measurement Ranges: Distance/Voltage/Resolution 1 cm (0 to 10kv) 1V 2,5 cm (0 to 20kv) 2V 5 cm (0 to 50kv) 10V 10 cm (0 to 100kv) 10V 20 cm (0 to 200kv) 20V Displays: Two, 11-segment positive & negative LED-bar charge indicators 16-digit alphanumeric dual row LCD Settings: CPM - operating function: Starting voltage: 600 V - 1200 V in 1 V-steps Stop voltage: 1 V - 500 V in 1 V-steps (in decimal mode) Static decay time: 0.1 seconds - 99.9 seconds Offset-voltage time: 0 seconds (Indefinite time, CPM in floating mode) 1 - 10 seconds (1 second steps) 10 - 60 seconds (10 second steps) Voltmeter operating function: Ranges: 25 V, 100 V, 500 V, 1.0 kV, 5.0 kV and auto range Fieldmeter operating function: Ranges: Manual 1.25 kV/m, 5 kV/m, 25 kV/m, 50 kV/m, 250 kV/m, and automatic Plate electrode: VA-steel (152 x 152) mm/(6 x 6) inches, removable, capacitance (20 ± 2) pF Cup electrode: Gold-plated electrode with 4mm-banana socket, for voltage measurements Selection of operating function: Pre-setting is “FIELDMETER”, additional automatic settings by applying the plate or cup electrode Operating temperature: 0 to 45°C (32º F to 113º F) Humidity: Maximum 60 % Note: At high relative humidity, charge leakage may occur affecting the decay time measurement. Storage temperature: -30˚ C to 60° C (-22˚ F to 140˚ F) Declaration of conformity EN 60204-1/85 EN 60204-1/91 EN 61010 (SAFETY) EN 50082-1 EN 50082-2 8 78-8136-3182-3 4. Fieldmeter Operation Kilovolts/Meter Measurement Ranges: Manual/Auto; 1.25 kV/m, 5.0 kV/m, 25 kV/m, 50 kV/m, & 250 kV/m Meter display symbols in Fieldmeter mode F = 3M™ Charge Analyzer 711 in Fieldmeter mode (upper left corner). R = Kilovolts/Meter measurement range (kV/m) selected. AR = Auto voltage measurement range selected (arrow ← symbol will briefly flash in lower left corner before symbol appears. Arrow → symbol will briefly flash during overflow condition when in the auto range). E = Electrical field strength (V/meter) as measured. If range selected is too low OVERFLOW will appear. Setup  WARNING To reduce the risks associated with hazardous voltage: • Connect the attached ground wire on rear panel to an electrical ground before operating the analyzer; • Do not use if the analyzer housing or power supply are damaged; • Do not attempt to modify or repair — no user serviceable parts inside — contact 3M Service for repair. To reduce the risks associated with fire or explosion: • Do not operate the analyzer in an explosive environment. The analyzer is not designed to be intrinsically safe. The following procedure zeros each voltage range in the Fieldmeter measurement mode. 1. Ground the charge analyzer 711 by attaching the ground wire with alligator clip on the rear panel of the unit to an earth/electrical ground. 2. Remove the plate electrode (b) from the analyzer if attached. Note: If the unit is ON at this time, the display will briefly indicate CHANGE MODE OF OPERATION then FIELDMETER IS ENABLED. 3. Depress the on/off button to activate the analyzer. 4. Cover the measurement electrode on the top of the unit with the red sensor cover (e). 5. Select each range by depressing the “A” button RANGE momentarily. Be sure to allow a brief moment between each range selection to perform the zeroing. This completes the zeroing of all ranges. 978-8136-3182-3 Use 1. Remove the red sensor cover (e) from the measurement electrode. 2. Select the desired voltage range by depressing the “A” button. Note: If OVERFLOW appears during the measurement select a higher range. The 3M™ Charge Analyzer 711 is now ready to measure electrostatic fields on objects such as tapes, films, plastic objects, etc., indicating in kilovolts per meter. Demonstration #1 Testing of Low Tribocharging Tapes With the charge analyzer 711 in the FIELDMETER operating mode, pull the tape off the roll and hold it above the sensor. The digital display reads the field strength in kV/m. To convert readings of kV/m into volts use the following formulas: R/100 x D (cm) or R/39.37 x D (in.) where: R = Reading indicated on the display and D = Distance between tape and sensor electrode, measured in centimeters or inches. Example 1: If reading on the display of the analyzer is 200 KV/m and the distance to the sensor electrode is 5 cm, the voltage on the tape is calculated by: 200/100 x 5 = 10 Kilovolts Example 2: If reading on the display of the analyzer is 50 KV/m and the distance to the sensor electrode is 3 inches, the voltage on the tape is calculated by: 50/39.37 x 3 = 3.8 Kilovolts Note: Properly performing ESD control tapes must minimize charging when unwound from the carrier roll. Administrator 高亮 Administrator 高亮 Administrator 高亮 10 78-8136-3182-3 5. Voltmeter Operation Voltage Measurement Ranges: Manual/Auto; 25V, 100V, 500V, 1000V, & 5000V Meter display symbols in Voltmeter mode V = 3M™ Charge Analyzer 711 in Voltmeter mode (upper left corner). R = Voltage measurement range selected. If range selected is too low OVERFLOW will appear. AR = Auto voltage measurement range selected (arrow ← symbol will briefly flash in lower left corner before symbol appears. Arrow → symbol will briefly flash during overflow condition when in the auto range. U = Voltage level on cup electrode. 1178-8136-3182-3 Setup  WARNING To reduce the risks associated with hazardous voltage: • Connect the attached ground wire on rear panel to an electrical ground before operating the 3M™ Charge Analyzer 711; • Do not use if the analyzer housing or power supply are damaged; • Do not attempt to modify or repair — no user serviceable parts inside — contact 3M Service for repair. To reduce the risks associated with fire or explosion: • Do not operate the analyzer in an explosive environment. The analyzer is not designed to be intrinsically safe. The following procedure zeros each voltage range in the Voltmeter measurement mode. 1. Remove the plate electrode and red sensor cover from the 3M™ Charge Analyzer 711, if attached. 2. Mount the gold cup electrode (a) to the top of the analyzer and secure with the attached long-knurled screws. 3. Insert the banana plug on one end of the PTFE lead wire (f) into the ground jack on the back of the analyzer. 4. Insert the other banana plug end of the PTFE lead wire (f) into the gold cup electrode (a). 5. Ground the unit by attaching the ground wire with alligator clip on the rear panel of the unit to an earth/ electrical ground. 6. Depress the on/off button to activate the analyzer. The display will briefly indicate CHANGE MODE OF OPERATION then VOLTMETER IS ENABLED (if cup has not been previously attached). 7. Depress the “B” button (SET) to display OFFSET A. 8. Select OFFSET A by depressing the “A” button to display UPDATE OFFSET menu. Note: If you should depress the “B” button (SETUP), you will have to switch off the analyzer to get back into the Voltmeter mode. 9. Select YES by depressing the “A” button. GROUND CUP, READY >B will appear on the display for verification that the cup electrode is indeed grounded. 10. Select the “B” button to activate the automatic zeroing feature in the Voltmeter mode. Display will indicate READ ALL OFFSET, UPDATING, zeroing all ranges. This completes the zeroing procedure. The display returns to the measurement mode. Use 1. Unplug the PTFE lead (f) from the ground jack at the rear of the analyzer. 2. Plug the PTFE lead (f) into the cylinder electrode (c). 3. Select the desired voltage range by momentarily depressing the “A” button. Note: If OVERFLOW occurs during the measurement select a higher range. The charge analyzer 711 is now ready to monitor the effectiveness of static control products, measuring electrical charge on people and conductive objects, indicating in volts. 12 78-8136-3182-3 Demonstration #2 Performance of a Wrist Strap 1. Hold the cylinder electrode in one hand and perform normal body