Besantek BST-MGR01 Скачать руководство пользователя страница 17 | Manualshive

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Besantek BST-MGR01 Скачать руководство пользователя страница 17

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BESANTEK

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10. 3 Terminals Measurement

P2 C2

Usi

n

g the 3T

m

etho

d

,

R

:n

does not a

ff

ect

the rea

d

i

n

gs

.

R,

"

is neg

l

i

g

e

ab

l

e as no

c

urr

en

t

goes into and P2

b

ut R

.,.

i

s added to

R

x

.

For measuring low resistance, this measuring method can be utilized

C1 and P1 terminals are shorted at the tester.

Rc

2

L is the Resistance of the Current Lead going to C2

R

P1L

is the Resistance of the Current Lead going to P1

R

P2L

is the Resistance of the Current Lead going to P2

In this case, R

P

1

L

is not negligeable anymore, because the current

going into this lead is the constant current, which is high. So the

error of R

P1

L exist and in reality, this error is added to Rx. So, if the

resistance under test is much higher than the test lead, than, this

method could be accepted.

This method is a simplified method of measurement.

Always, keep in mind, that R

P

1

L

is your error resistance.

-15-

Test Equipment Depot - 800.517.8431

99 Washington Street Melrose, MA 02176

TestEquipmentDepot.com

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Содержание BST-MGR01

Страница 1: ...NCE OHM and CONTACT METER MtCROPROCESS R CONTROLLED CE l OFF R M NlJ l R NGING g ii la Ii ee P C CR JWEAFI FUSES MEASUREl IENT CONNECTIONS V 4T fl 1 i Q V 3T I qt P1 Pl Cl V 2T I INSTRUCTION MANUAL Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com ...

Страница 2: ... Terminals Measurement 16 12 Typical Applications 17 18 13 Working Principle of The Instrument 18 14 Charging The Battery 19 15 Fuse Replacement 19 16 The Storage and Maintenance of Batteries 20 17 Notes 20 18 Limited Warranty 21 REMEMBER TO CHARGE THE BATTERY ALWAYS recharge the battery when the Low Battery info appears on the LCD Leaving the battery uncharged for a long period of time may affect...

Страница 3: ...codiles aligators clips that are dirty damaged or have broken or cracked insulation Such accessories should be removed and repaired Immediately Always disconnect the test leads before replacing any fuse Always replace the fuse with the type specified and ensure that they are correctly fitted Double check your settings and leads connections before measuring Make a sketch to ensure proper operation ...

Страница 4: ... T TOUCH Don t touch exposed wiring connections or other Live parts of an electrical circuit If in doubt check the circuit first for voltage before touching or connecting to it Do not use cracked of broken test leads THIS INSTRUMENT SHOULD ONLY BE USED BY A COMPETENT SUITABLY TRAINED PERSON REMEMBER SAFETY IS NO ACCIDENT CAUTION RISK OF ELECTRIC SHOCK CAUTION READ THE MANUAL 3 General Description ...

Страница 5: ... being C2 being The voltage drop across the resistance under test is measured by the potential terminals P1 and P2 P1 being P2 being Should the current regulation drops out the RC Led will lit indicating that the resistance in the current circuit is too high Lowering the current by selecting a higher resistance range can solve the regulation Should the RP Led lights up it mean that the voltage mea...

Страница 6: ...depressed for more than 3 seconds the test will carry on for 60 seconds The tester switch OFF completely when the OFF push button is pressed but The METER has also an auto off feature The tester Hold the last reading before stopping the test The tester is fuse protected and has a crowbar between C1 and C2 This crowbar is activated by voltage If the voltage is too high that crowbar will blow the CF...

Страница 7: ...the tester ON At switch ON the tester retrieve the last settings utilized These are the current range settings which were last utilized by the Instrument At Switch ON the buzzer sounds to confirm the ON status Depressing the OFF key will switch the instrument OFF This OFF switch is software operated At switch OFF the buzzer will sound to confirm the OFF condition is processed by the micro Next the...

Страница 8: ...ss the TEST Start Stop Key for less than 3 second or just depress it than the instrument will enter the EnerSave mode and the test duration is limited to about 10 seconds In both cases the Test is stopped automatically by the instrument but the user can always override the auto stop by depressing the TEST Start Stop key at any time in any mode Range Indication by LED Test Current 1A Resistance 0 2...

Страница 9: ... Resistance 0 200 0mn When this LED lights up the instrument will measure up to 199 9mO and will dis and will display it as milli ohms The resistance which can be measured using this scale range is from 000 0m to 199 9mn Range Indication by LED Test Current 100mA Resistance 0 2000mn When this LED lights up the instrument will measure up to 1999mO and will display it as milli ohms The resistance wh...

Страница 10: ...d using this scale range is from 00 00 to 19 990 Range Indication by LED Test Current 10mA Resistance 0 200 00 When this LED lights up the instrument will measure up to 199 90 and will display it as ohms The resistance which can be measured using this scale range is from 000 0 to 199 90 8 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com ...

Страница 11: ...p In case of Over Temperature the Ices OFF led will lights up The Re indicator LED lights up when the resistance between the current terminals is too high for the constant current source to regulate This indicator is only significant while the test is in progress You can try to lower the test curent if it comes on while testing The RP indicator LED lights up when the potential between the potentia...

Страница 12: ...value when TEST stops When Scroll Range is depressed while a test is in progress The Sound Sign indicator is shown while the buzzer is working That mean that when the buzzer sound the sign is ON The Low Battery Sign indicator is showing when the battery need charging The negative sign is shown when the test leads are reversed This instrument is calibrated while the Test leads are in the Correct po...

Страница 13: ...Ω 4 rdg 4 dgt 0 to 200 0mΩ 4 rdg 4 dgt 0 to 2 000Ω 3 rdg 4 dgt 0 to 20 00Ω 2 rdg 4 dgt 0 to 200 0Ω 2 rdg 4 dgt Test Current 2 000mΩ to 200 0mΩ 1A 3 200 0mΩ to 20 0Ω 100mA 2 200 0Ω 10mA 1 5 Maximum Output Voltage 10V Response Time 1secs nominal Voltage Withstand 6V AC between any two terminals Battery Low Indication point 10V nominal MECHANICAL Size 330 x 260 x 160 mm Material Polycarbonate ABS Wei...

Страница 14: ...10 1 EN 61326 1 Battery 12 V rechargeable 12V 2 3Ah Fuses 1 X 500mA Potential Fuse 1 X 2A Current Fuse Slow Blow 250V type SPARES AND ACCESSORIES Test Leads Fuses 500mA 250V 2A 250V Battery 12V Rechargeable Instruction Manual 7 Cleaning Clean the instrument case with an anti static cleaner and wipe with dry cloth ...

Страница 15: ...ucodtoaround 10Scc This LEOIndicates that th currenthas bf n Ice OFF t J nstont Current R R This LEOIndicates that I the re Sistanc lnH le Current Circuh is too high orthe curreJ t can t be tegulaled This LED Indicates that the PorenUal Ck c u1t Voltage Is TOO high Rrn Resistance of Current lead C1 R Resistance of Potential Lead P1 RPa Res stan e of Potential Lead P2 R0 Res st _ ance of Current Le...

Страница 16: ... the Resistance of the Current Lead going to P1 RP2L is the Resistance of the Current Lead going to P2 The input impedance between P1 P2 is 1 OM ohms so because the current being drawn by these pins is so small the voltage loss on RP1L RP2L is very small too So the loss in these potential wires is not even influencing the voltage measured on P1 P2 Due to the fact that the tester has a constant cur...

Страница 17: ...nt Lead going to P1 RP2L is the Resistance of the Current Lead going to P2 In this case RP1L is not negligeable anymore because the current going into this lead is the constant current which is high So the error of RP1Lexist and in reality this error is added to Rx So if the resistance under test is much higher than the test lead than this method could be accepted This method is a simplified metho...

Страница 18: ... is the Resistance of the Current Lead going to P2 In this case RP1L and RP2L are not negligeable anymore because the current going into these leads is the constant current which is high So the error of RP1L RP2L exist and in reality this error is added to Rx So if the resistance under test is much higher than the test leads than this method could be accepted This method is a simplified method of ...

Страница 19: ...t the lighting into the earth On aircrafts the lightning must be conducted from one side to the other side of the wings by low resistance conductors instead of going through the frame of the plane These resistance can be checked with this instrument Measuring the contact resistance of bolted conductors Similarly to bonding of welding points some times connections are done using bolted conductors o...

Страница 20: ...C current into the low resistance to measure The current is injected into the resistance under test through the terminals C1 and C2 This Test Instrument has a DC voltmeter which measure the DC voltage across the resistance to be measured The Voltmeter connections are on P1 and P2 The display shows a number proportional to the ratio of the current injected and the voltage measured R U I When the us...

Страница 21: ...intenance Only replace with the same type of battery REMEMBER TO CHARGE THE BATTERY ALWAYS recharge the battery when the Low Battery info appears on the LCD Leaving the battery uncharged for a long period of time may affect the lifespan of the battery Charing interral Every 3 months 15 Fuse Replacement REPLACING THE POTENTIAL FUSE The PF fuse mean it s the Potential Fuse The Potential Measurement ...

Страница 22: ...ery life will be shorter The rechargeable battery under storage at ambient temperature of 25 C should be recharged every six months to maintain their quality performance and reliability Charge Retention shelf life at 20 C 1 month 92 3 month 90 6 month 80 17 Notes Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com ...

Страница 23: ......

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