model 4022 signal survey meter manual
Contents
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3. 00 10 100 1000 mR h Lamp push switch Internal Controls Calibrate adjustments X1 X10 X100 Radiation Detected gamma Xrays Range 0 10 0 100 and 0 1000 mR h Geiger Tube Voltage 950V Battery 9v Battery Life 500 hours QR Quick Response Time Constant X1 Slow 7 sec Fast 1 sec X10 Slow 3 2 sec Fast 1 sec X100 1 sec Beeper Piezo Electric Beeps every count with power switch in ON WITH SPKR position beeps only at turn on in ON position Beeps at turn on if battery is good SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE MODEL 4022 SIGNAL 2 INTRODUCTION The Signal is a meter that has an integral GM detector It is a high quality simple to operate instrument suitable for both lab and field use OPERATION Your model 4022 Survey Meter is shipped fully assembled with batteries To get started Turn Power switch to ON with spkr The instrument should beep and the meter will read upscale After about 3 seconds the meter should read the proper amount of radiation Put the Range switch on x1 and the meter should move to zero which is normal background radiation FEATURES The Signal incorporates a QR quick response meter circuit that eliminates the need for a reset or time constant switch The meter will move quickly to near the correct value then slow down as it approaches the value This reduces the meter fluctuations at low counting rates while still responding quickly to significant changes in
4. MODEL 4022 SIGNAL SURVEY METER MANUAL SEPTEMBER 1998 Health Physics Instruments 330 D South Kellogg Ave Goleta CA 93117 Tel 805 964 3615 FAX 805 964 3162 Division of Far West Technology TABLE OF CONTENTS SPECIFICATIONS 2 MECHANICAL ee eeceetee A RAEAN 2 OPERATIONAL aa aaas aa aa a aa aa a aaa aea E aa a aE a a aa aaa 2 INTRODUCTION 3 OPERATION 3 FEATURES 3 FUNCTIONS 3 POWER SWITCH E 3 RANGE SWITCH anatona siitin aiat 4 4 4 MAINTENANCE AND ADJUSTMENT 4 BATTERY CHANGE 4 CALIBRATION endana anane 5 WARRANTY 5 SCHEMATIC 7 CAUTION THE THIN WINDOW GM DETECTOR BEHIND THE SCREEN ON THE BOTTOM OF THE INSTRUMENT IS EASILY BROKEN THIS DETECTOR IS EXPENSIVE CARELESS HANDLING WILL RESULT IN AN UNNECESSARY EXPENSE OF BUYING A NEW DETECTOR MODEL 4022 SIGNAL 1 SPECIFICATIONS MECHANICAL Dimensions 3 x 6 x 1 5 8 75mm x 159mm x 40mm Weight 14 500 grams Case Black Anodized Aluminum Detector Peanut GM Tube OPERATIONAL Readout 2 2Taut Band Meter External Controls ON OFF ON WITH SPKR toggle switch Range toggle switch X1 X10 X1
5. ry including implied warranties of merchantability or fitness In addition it is expressly agreed by Buyer in purchasing the goods that the liability of HPI if any shall be limited solely to the replacement and repair of the goods in accordance with the warranties specifically and expressly set forth herein and HPI shall not be liable for loss of use of the equipment or for other incidental or consequential costs expenses or damages incurred by Buyer NOTE Instrument should be examined and tested as soon as received by Buyer Claims for damage if any should be filed at once with the carrier 44 1KM MOUNTED ABOVE OTHER COMPONENTS INSULATE LEADS 4 DIODES FR 107 005 1KV 8 afi R33 gt a ne 5290 ue R 5 43M 6 SE Gee 89 one R 50 uG T Om 8 Bio gt 016 LP2 0 O RESISTOR BLACK LEAD PARTS PLACEMENT MODEL 4022 SIGNAL 6 GND 4 tL iot A S r I oat 2 we ven A 1 SK E 40 2 25 4 5 T a 4 4 T T a Sir 13535 HOLIMS ot ole Slo ne male g Sew ane her ved 238 oye zit Zid o o gt 0 5 8 15 4 9 vig tl NO z JON
6. s the value printed on the scale Full scale is 100 mR h In the bottom position x 100 the meter is reading 100 times the value printed on the scale Full scale is 1000 mR h LIGHT SWITCH The Light Switch turns on the light above the meter Push it to turn on the light Release to turn the light off SPEAKER The speaker is located behind the hole above the meter It beeps at turn on to indicate a good battery and if the Power switch is in the lower position of ON with spkr the speaker will beep with each pulse from the GM Detector SPEAKER LIGHT POWER SWITCH RANGE SWITCH BATTERY COVER amp eer Fig 1 Front Panel Controls MAINTENANCE AND ADJUSTMENT BATTERY CHANGE The Model 4022 requires a single 9 volt battery You can use any type of 9 volt battery that will fit To replace the battery turn the instrument off and unscrew the four screws MODEL 4022 SIGNAL 4 on the battery cover that is the front panel Remove the cover Remove the battery and replace with a fresh one observing the polarity marked on the holder Replace the cover CALIBRATION The only user calibration is the sensitivity of the three ranges for the meter The instrument is designed to measure gammas and therefore should be calibrated with a radiation source The calibration is done as follows 1 Turn the instrument 2 Set the Range switch to X1 3 Expo
7. se the instrument from the side to 80 of full scale and adjust the X1 calibration to the left of the battery holder so the meter reads correctly Change the range switch to X10 and repeat step 3 Change the range switch to X100 and repeat step 3 6 You may also wish to report the readings of 20 full scale on all ranges to verify linearity This completes the Calibration A complete calibration would also check the reading of the meter to off scale conditions 1 10 100 RANGE X10 X1 X100 Fig 2 Battery box and Calibration WARRANTY HPI equipment is warranted to the original purchaser only to be free from defects in materials and workmanship for a period of one year from date of shipment unless MODEL 4022 SIGNAL 5 otherwise defined in the applicable product data sheet Under this warranty equipment which has been properly installed and operated and not subject to misuse misapplication or abuse but becomes defective will be repaired by us at our factory or replaced at the option of HPI and Buyer will pay only the cost of freight plus custom and broker fees where applicable and in transit insurance to and from HPI Of course expendable supplies such as batteries and easily damaged items such as thin window Geiger tubes if broken are not within the warranty Except for the warranties specifically set forth herein there shall be no other warranties whether express implied or statuto
8. the counting rate Another feature of the meter is the antisaturation circuit that will not let the meter fail in high radiation levels The long battery life of 500 hours is enough time to operate the meter for about a year at 2 hours a day and the automatic battery check warns of a low battery when it does happen The compact size allows the Signal to be carried and operated with one hand a strong consideration when doing extended surveys when the other hand may be busy FUNCTIONS In this section we will discuss the three controls and how they operate the instrument POWER SWITCH The power switch is a three position switch In the center position the instrument is turned off In the upper position the instrument is turned on without the speaker In the bottom position the instrument is turned on with the speaker When the instrument is first turned on the speaker will beep This indicates that the battery is good If the speaker does not beep then the battery needs replacing Also at turn on the meter will automatically display the battery condition for about 3 seconds How high into the BATT OK section of the meter the pointer moves is an indication of the condition of the battery MODEL 4022 SIGNAL 3 RANGE SWITCH The Range switch is a three position switch that switches the range for the meter In the up position x 1 the instrument is reading the scale on the meter In the middle position x 10 the meter is reading 10 time
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