HI-3550 Magnetic Field Monitor User Manual - ETS
Contents
1. Figure 1 HI 3550 Magnetic Field Monitor Archived 4 2 10 HI 3550 Manual Page 3 2 0 SPECIFICATIONS Target magnetic field Measuring sensor Measurement range DC Measurement accuracy 0 1 mT to 0 5 mT 0 5 mT to 0 3 T Resolution O 40 mT 40 mT 0 3 T Measurement update period Measurement modes Alarm function range Instantaneous measurement 3 seconds Integrating measurement 60 seconds DC static magnetic fields ELF 50 60 Hz AC magnetic fields InAs Hall Effect Sensor three axis isotropic response 0 1 mT to 0 3 T 0 05 mT 24 C 50 RH 10 0 01 mT 0 5 mT 3 seconds Instantaneous with peak hold function Integrating mT hours Standby low power consumption 0 1 mT to 9999 9 mT 1 mT h to 999 T h Archived 4 2 10 Page 4 HI 3550 Manual Operating Temperature Range O 2C to 50 C Display FE Type White liquid crystal Battery Size AAA alkaline batteries 4 required Battery Life at 8 hours day continuous use measurement of 40 mT or less 25 days measurement of 40 mT or more 15 days Controls Side of case Field Select Switch AC DC Mode STBY I B B Rear of Case LOCK UNLOCK SELECT SET CLEAR SELECT SET Outside dimensions 13 2 X 7 35 X 2 0 cm 5 2 X 2 9 X 0 8 in Weight Approximately 150 g 5 3 oz Belt Pack Part 451560038 Archived 4 2 10 HI 3550 Manual Page 52. 14 5 2 Using the Instantaneous Measurement B Mode x7 pa maw Ga Ea a 244s 15 Peak Holdnr Tara 2 4284 D4 And a maha ad DS 15 Peak Hold Display Range 15 5 3 Changing the Target Magnetic Fields 16 5 4 Using the Stand by STBY Mode 16 5 5 Alarm Function 17 Selecting the Alarm Mode 17 Activating Deactivating the Alarm 17 Setting the Instantaneous Alarm Value 17 Setting the Integrating Alarm Value 19 Changing the Alarm Settings 20 Ending Alarm Set Mode 20 Alarm Indicators by Measurement Mode 20 Alan aa mh TAGA AG Gnd Ga Gta Gone 22 Archived 4 2 10 Stopping the Integrating Mode Alarm Clearing a Manually Interrupted Alarm Archived 4 2 10 Limited Warranty Holaday Industries Inc warrants each model HI 3550 Magnetic Field Monitor to be free from defects in material and workmanship for a period of one year from the date of shipment to the purchaser This warranty extends to the original purchaser only and does not apply to the batteries or to any products or parts subject to misuse neglect accident unauthorized service or abnormal conditions of operation In the event an instrument covered by this warranty fails Holaday Industries Inc will without charge repair and recalibrate the instrument if returned to their factory within one year of the original purchase provided that Holaday Industries examina
3. 3 0 UNPACKING AND ACCEPTANCE Introduction This section contains information on the procedure for the unpacking and acceptance of the HI 3550 Unpacking and Acceptance Step 1 Step 2 Step 3 Upon delivery of your order inspect the shipping container s for evidence of damage Record any damage on the delivery receipt before signing In case of concealed damage or loss retain the packing materials for inspection by the carrier Remove the instrument from its shipping container Save the boxes and any protective packing materials for future use Check all materials against the packing list to verify that the equipment received matches that which was ordered If you find any discrepancies note them and call Holaday Customer Service for further instructions Be sure that you are satisfied with the contents of your order and the condition of your equipment before using the instrument Archived 4 2 10 Page 6 HI 3550 Manual Archived 4 2 10 HI 3550 Manual Page 7 4 0 MAINTENANCE The following user precautions are intended to ensure that your HI 3550 maintains reliable operation over its lifetime User Precautions Do not expose the HI 3550 to direct sunlight or high temperatures for extended periods Avoid dropping bumping bending or twisting the instrument Such mistreatment may damage the instrument Do not actuate switches or buttons with hard or pointed objects or press on the
4. 0 is a compact lightweight personal magnetic field monitor employing three axis detection enabling accurate measurement regardless of field orientation This instrument provides both instantaneous and time integrated field measurements A dual alarm function one for each measurement mode is also included Holaday Industries Inc introduced the model HI 3550 in response to demand from researchers and operators working in the strong DC static magnetic fields generated by medical diagnostic devices such as MRI s nuclear fusion experimental devices metallurgical processes or superconductive magnets This monitor measures the instantaneous and time integrated exposures to such fields Thank you for selecting our model HI 3550 Magnetic Field Monitor Before using the instrument please read this manual thoroughly to obtain optimum test results and keep it handy for reference Archived 4 2 10 HI 3550 Manual Page 2 HALL SENSOR O ALARM HI23550 RG HM Ss s BBB BB BB r a HHH 88 sN mI h JB 2 Th AC OC STB aa HOLADAY H INDUSTRIES MAGNETIC FIELD MONITOR Z N STBYX S8 4B Holaday Industries EDEN PRAIRIE MN USA 55344 BATTERY AAA 1 5V X 4 IEC LRO3 RO3 UNLOCK m CLEAR LOCK SELECT SET
5. Archived 4 2 10 HI 3550 Magnetic Field Monitor User s Manual Declaration of Conformity We HOLADAY INDUSTRIES INC 14825 MARTIN DRIVE EDEN PRAIRIE MN 55344 USA declare in our own responsibility that the HOLADAY product described in this instruction manual is in compliance with EN EMC Directive 89 336 EEC EN50082 1 EN55011 President HOLADAY INDUSTRIES INC Copyright 1993 by Holaday Industries Inc Manual 600053 10 97 12 50 Archived 4 2 10 Revision Record Manual 600053 HI 3550 Magnetic Field Monitor Revision Description Date Release 11 93 A Added CE Label 10 97 Archived 4 2 10 1 0 2 0 3 0 4 0 5 0 TABLE OF CONTENTS DESCRIPTION 000 00 1 Introduction EG 1 SPECIFICATIONS 3 UNPACKING AND ACCEPTANCE 5 Introduction ee es 5 Unpacking and Acceptance 5 MAINTENANCE 0 7 User Precautions 0 0 7 Replacing Batteries 8 Battery Recommendations 10 Maintenance Recommendations 10 Return Procedures 10 Periodic Preventive Maintenance 11 DESCRIPTION OF HI 3550 OPERATION 13 Introduction aa cee ee ees 13 Measurement Cycle 00 0000 aee 13 Measurement Ranges 2 0005 13 5 1 Using the Integrating IB Mode 14 Changing the Measurement Mode
6. blems Maintenance Recommendations Any calibration or maintenance task which requires disassembly of this instrument should be performed at the factory There are no user serviceable components inside the instrument case Opening or disassembling the instrument case will void the warranty Return Procedures To return your HI 3550 to Holaday use the following procedure 1 Briefly describe the problem in writing Give details regarding observed symptom s and whether the problem is constant or intermittent in nature If you have talked previously to Holaday Customer Service about the problem provide the date s the name of the service representative you spoke with and the nature of the conversation Include the serial number of the item being returned 2 Package the instrument carefully We recommend using the original box and packing materials If this is not possible order new boxes and foam packing from Holaday Industries Inc If the instrument is under warranty refer to the Limited Warranty at the front of this manual for additional information about your return Archived 4 2 10 HI 3550 Manual Page 11 Periodic Preventive Maintenance Holaday Industries recommends an annual calibration check of the HI 3550 Magnetic Field Monitor to verify that it is performing within specifications This calibration check will be performed by Holaday Service Personnel at the factory Return your instrument s using the or
7. e TIME on Do g Figure 12 Integrating Mode Display with Both Alarms Set and ON When an alarm value is programmed only for the integrating measurement mode and the alarm is ON a Inthe integrating measurement mode only the alarm indicator is visible b In the instantaneous measurement mode no alarm indications are visible M S ce 00000 rB J00 bla Figure 13 Integrating Mode Display with Only Integrating Alarm Set and ON When an alarm value is programmed only for the instantaneous measurement mode and the alarm is ON a In the integrating measurement mode both the Archived 4 2 10 Page 22 HI 3550 Manual B AL SET and the alarm indicators are visible b In the instantaneous measurement mode only the alarm indicator is visible M S ws 00000 Aa 1 mT h Figure 14 Integrating Mode Display with Only Instantaneous Alarm Set and ON When alarm values are programmed for both the integrating and instantaneous measurement modes but the alarm is OFF or when the alarm is ON but alarm values for both the integrating and instantaneous measurement values are set to 0 0 mT None of the B AL SET B AL SET or alarm indicators are visible In the stand by mode only the STBY indicator is visible Alarm The instantaneous alarm signal is generated in both the instantaneous and integrating measurement modes The integrating alarm signal is produced only in the integrating
8. h axis is nearest to the magnet This is normal Peak Hold The model HI 3550 continuously displays the maximum instantaneous value measured since the instrument was last set to the B mode This peak value is displayed on the upper line of the display panel To clear the peak hold value 1 change to any other mode 2 change the magnetic field selection AC or DC Peak Hold Display Range The HI 3550 is capable of displaying a maximum peak hold value of 3546 37 mT the maximum instantaneous Archived 4 2 10 Page 16 HI 3550 Manual value that can be displayed is 3 54 T These readings are also displayed for any measured field strength exceeding these values 5 3 Changing the Target Magnetic Fields To change the target magnetic field while measuring slide the AC DC switch to the desired position NOTE Be very careful to select the appropriate setting AC or DC for the magnetic field being measured Incorrect settings can increase the error or uncertainty of the displayed value by up to 10 5 4 Using the Stand by STBY Mode To stop measuring change the measurement mode to STBY Selecting STBY reduces power consumption and prolongs battery life All stored integrated field data is saved in STBY mode For practical purposes the STBY mode is the OFF condition of the instrument If the instrument will not be used for a considerable period remove the batteries STBY Figure 7 Stand by Mode Arc
9. hived 4 2 10 HI 3550 Manual Page 17 5 5 Alarm Function Selecting the Alarm Mode 1 Slide the Measurement Mode switch to STBY 2 Press LOCK button for approximately three seconds to shift to the alarm set mode The alarm display will be indicated on the LCD readout Activating Deactivating the Alarm When the alarm set mode is initiated the word OVER appears and the alarm symbol blinks upper left corner of the display 1 mT h Figure 8 Ready for Alarm ON OFF Setting The alarm is toggled on and off each time you press the SET button When the alarm symbol blinks the alarm is on when it disappears the alarm is off When deactivated no alarm sounds even if an alarm value has been programmed Setting the Instantaneous Alarm Value 1 After the alarm set mode is activated press the SELECT button The alarm set symbol is visible the word OVER disappears and both the B AL SET indicator and the instantaneous measurement units mT appear In addition the most significant digit of the instantaneous measurement value is blinking Archived 4 2 10 Page 18 HI 3550 Manual The instrument is now ready to be set to the desired alarm value for the instantaneous measurement mode J mT h Figure 9 Instantaneous Measurement Alarm Value Flashing Ready to Set 2 Each time the SET button is pressed the value of the selected digit increments by one 1 Press SET until the selec
10. iginal packing materials if possible to Holaday Industries Inc Attn Service Department 14825 Martin Drive Eden Prairie MN USA 55344 Archived 4 2 10 Page 12 HI 3550 Manual Archived 4 2 10 HI 3550 Manual Page 13 5 0 DESCRIPTION OF HI 3550 OPERATION Introduction This section provides a detailed description of the operation of the HI 3550 Measurement Cycle The HI 3550 performs a measurement every three seconds and displays the results on the lower line of the display panel Measurement Ranges The HI 3550 can measure magnetic field strength up to 0 3 T for each of the three axes Depending on the orientation of each sensing axis with respect to the direction of the magnetic field it is possible to display the measured value of field intensities greater than 0 3 T In the integrating mode the HI 3550 displays elapsed time on the upper line of the display panel H denotes hours M denotes minutes and S denotes seconds Integrating time is displayed up to 999 hours 59 minutes 59 seconds When elapsed time exceeds this value the display rolls over to O hours OO minutes 00 seconds and restarts the count f 9 H M S 0000 o DUU PRG Figure 5 Integrated Time and Integrated Value Cleared Archived 4 2 10 Page 14 HI 3550 Manual The HI 3550 can display integrated magnetic flux levels of up to 999 99 T h Integrated flux levels in excess of this value are
11. m with excessive force Such operation could damage these controls This may void your warranty To clean the instrument case use a soft dry cloth Avoid using volatile liquids such as thinner or alcohol since they will damage the instrument NOTE Holaday Industries is not responsible for any damage that results from disregarding the above precautions For maximum battery life be sure to set the mode switch to STBY when the HI 3550 is not in use If the instrument will not be used for extended periods remove the batteries to avoid damage caused by battery leakage In case of leakage wipe away any residue with a cloth before inserting new batteries Archived 4 2 10 Page 8 HI 3550 Manual Replacing Batteries NOTE All stored data is lost when the batteries are removed The HI 3550 is powered by four size AAA batteries When the batteries need replacing the battery indicator appears in the lower right corner of the display When this indicator appears replace all batteries according to the following procedure mil Ea HOOD ACT _aA T Figure 3 Low Battery Display Flashing 1 Record any integrating measurement data you wish to retain 2 Switch the instrument to the instantaneous B mode 3 On the back of the case locate the battery cover and pull it in the direction of the arrow labelled OPEN 4 To make battery removal easier push the battery toward the negative te
12. measurement mode The instantaneous alarm signal occurs 8 times per second for a duration of three seconds The integrating alarm signal occurs once per second for a duration of 60 seconds Archived 4 2 10 HI 3550 Manual Page 23 When the instantaneous alarm setting overlaps the integrating alarm setting the instantaneous alarm is given priority After the instantaneous alarm stops the integrating alarm follows immediately Stopping the Integrating Mode Alarm If desired the integrating mode alarm can be interrupted manually prior to the end of the default duration 60 seconds The operator can stop the alarm by pressing the LOCK SELECT or SET buttons or by switching measurement modes When the alarm is interrupted in this manner the OVER indicator appears The integrating alarm will not operate again until it is reset one wE 234506 we p 19H L J Figure 15 OVER is Displayed NOTE When the instantaneous and integrating alarm values are set to 0 0 mT the alarm will not sound even if it is activated Clearing a Manually Interrupted Alarm Pressing the SELECT and SET buttons simultaneously for approximately three seconds clears the memory of integrated time and value The alarm is reset automatically When you modify the integrating mode alarm value the Archived 4 2 10 Page 24 HI 3550 Manual alarm will also be reset automatically When the alarm is reset the OVER indicator disa
13. not displayed 5 1 Using the Integrating IB Mode 1 Slide the AC DC Magnetic Field Selection switch to select the type of magnetic field to be measured Set the STBY I B B Measurement Mode Switch to IB NOTE Do not perform the next step if you wish to add to previously stored data 2 Press the SELECT and SET buttons CLEAR function on the back of the instrument simultaneously for approximately three seconds to clear the memory of stored integrated time and value The alarm settings remain unchanged after the memory is cleared Changing the Measurement Mode Changing from integrating to instantaneous measurement mode will stop the integrating measurement mode while retaining the integrated time and value After you change the measurement mode the reading will remain unchanged until one measurement cycle 3 seconds is completed Archived 4 2 10 HI 3550 Manual Page 15 5 2 Using the Instantaneous Measurement B Mode Slide the AC DC Magnetic Field Selection switch to select the type of magnetic field to be measured Set the STBY B IB Switch to B The Instantaneous and Peak Hold memory values are cleared displaying 0 00 for both PEAK and B Measurement starts after three seconds w ee 0 00 mT 4B 000 ae IKT Sr Figure 6 Instantaneous Value and Peak Hold Value Cleared When a permanent magnet is placed close to the sensor the measured value will vary depending on whic
14. ppears Archived 4 2 10 HI 3550 Manual Page 25 NOTES Archived 4 2 10 Page 26 HI 3550 Manual NOTES
15. rminal and lift Remove the old batteries Archived 4 2 10 HI 3550 Manual Page 9 5 Insert them according to the diagrams in the inside of the battery compartment To replace a battery press it against the terminal spring on the negative terminal push down and release Be careful when inserting the batteries or you may damage the terminal connectors Replace all four batteries Immediately after inserting the fourth battery the display enters the test state all display indicators are visible for approximately two seconds If the test display does not appear pull out one battery wait several seconds then reinsert it LOVER 0608 AB AB HT h mE i AT DT STBY C Figure 4 Test Display NOTE Make sure that the HI 3550 operates in the instantaneous measurement mode before switching to standby mode If the unit does not operate properly in this mode the instrument will not measure accurately When you have confirmed the test display state and proper instantaneous mode operation reattach the battery cover to the case Archived 4 2 10 Page 10 HI 3550 Manual Battery Recommendations It is recommended that alkaline batteries be used with the HI 3550 Always use four identical batteries same manufacturer and specification If this recommendation is not followed Holaday Industries Inc will not be responsible for shortened battery life or other battery related pro
16. ted digit indicates the desired value 3 Each time you press the SELECT button the digit to be programmed advances to the right Proceed in this manner setting each individual digit to set the exact alarm value desired NOTE When you proceed to step 4 the B AL SET mark goes out and the leading zeros of the instantaneous alarm value are suppressed For example 0050 0 is displayed as 50 0 4 After you have programmed all digits of the alarm value pressing the SELECT button will switch the instrument into the integrated alarm units of measure programming mode The B AL SET indicator and the digits to be programmed appear on the lower line of the display and the integrating unit of measure Archived 4 2 10 HI 3550 Manual Page 19 symbol blinks Pressing the SET button now toggles the units of measure between mT h and T h milliTesla hours and Tesla hours o 500 n U0 sit Figure 10 Leading Zeros Suppressed Setting the Integrating Alarm Value 1 After you have set the alarm value unit of measure for integrating measurement see step 4 above press the SELECT button The most significant digit of the integrated alarm value blinks Each time the SET button is pressed the value of this digit increments by one 1 Press SET until the selected digit indicates the desired value Each time you press SELECT button the digit to be programmed advances to the right Proceed in this manner set
17. ting each individual digit to set the exact alarm value desired After you have programmed all digits of the alarm value pressing the SELECT button again returns the instrument to the alarm ON OFF state see Activating Deactivating the Alarm When you return to the alarm ON OFF the IB AL SET mark will go out and as before the leading Archived 4 2 10 Page 20 HI 3550 Manual zeros of the integrating measurement alarm value will be suppressed Figure 11 Leading Zeros Suppressed Ready for Alarm ON OFF Setting Again Changing the Alarm Settings 1 In the alarm set mode press the SELECT button to move to the value or unit you wish to change 2 Press the SET button to program the desired value or unit Ending Alarm Set Mode When you have completed setting the alarms press the LOCK button for approximately three seconds The instrument returns to the stand by mode and the alarm set mode is terminated Switching directly to the instantaneous or integrating measurement mode will also terminate the alarm set mode automatically Alarm Indicators by Measurement Mode When alarm values are programmed for both integrating and instantaneous measurement modes and the alarm is ON a In the integrating measurement mode the IB AL SET B AL SET and alarm indicators are visible b In the instantaneous measurement mode only the Archived 4 2 10 HI 3550 Manual Page 21 alarm indicator is visibl
18. tion discloses to its satisfaction that the product is defective Holaday Industries Inc may at its option replace the product in lieu of repair If the defect was caused by misuse neglect accident unauthorized service or abnormal conditions of operation repairs will be billed at a nominal cost In such cases an estimate will be provided before work is started if requested by the purchaser For warranty service contact Holaday Industries Inc Provide the serial number of the instrument and complete details regarding the failure mode You will then be given either service information or shipping instructions Return the instrument to the factory transportation prepaid Repairs will be made at the factory and the instrument will be returned to you transportation prepaid Holaday Industries Inc assumes no responsibility for loss of or damage to products in transit Warning EXTREME CAUTION IS ADVISED WHEN WORKING _ IN ENVIRONMENTS WHERE HIGH INTENSITY ELECTROMAGNETIC FIELDS MAY EXIST AND WHERE CONTACT WITH HIGH VOLTAGE OR HIGH CURRENT CIRCUITS OR APPARATUS IS POSSIBLE ACCIDENTAL CONTACT WITH OBJECTS OR CIRCUITS OPERATING AT HIGH VOLTAGES OR HIGH CURRENTS CAN BE LETHAL HOLADAY INDUSTRIES INC ASSUMES NO LIABILITY FOR ANY DAMAGES OR PERSONAL INJURY WHICH MAY RESULT FROM ACCIDENTS ARISING FROM THE USE OF THIS EQUIPMENT Archived 4 2 10 HI 3550 Manual Page 1 1 0 DESCRIPTION Introduction The model HI 355
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