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Ra Instruments
Ambala, Haryana, India
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Electrical & Electronic Testing Devices #2504330

Portable Wheatstone Bridge

  • Features Robust construction, Long service life, Excellent performance
  • Uses measuring unknown electrical resistance.

Accuracy

Series Arm ± 0.05%
Ratio Arm ± 0.02%
Galvanometer Super sensitive analogue galvanometer in built

 

Supply Source

Mains 230+/-10%AC, 50Hz
Battery 4.5 Volts
Switch Phosphor bronze hard silver plated
Dimensions (in cms) 38(L)x28(D)x18(H)
Weight 5kg

 

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Kelvin Cum Wheatstone Bridges

We are offering kelvin cum wheatstone bridges. description:- rai precision kelvin-cum-wheatstone bridges model 55x-kw is important instruments in the measurement of resistance as low as 0.1 micro ohms to highest value of 1 ohm. Manganin has the quality of very low temperature co-efficient which is a critical parameter for resistance standards manufacturing. Kelvin cum wheatstone bridge is also constructed with manganin coils & sheet. Phosphor bronze silver plated switches have been used to minimize the residual resistance error. Four standard decade dials, ratio selector & plug keys facilitate accurate null detection. kelvin bridge section user can easily change over from kelvin section to wheatsone bridge section & vice-a-versa with the help of a selector switch. range of measurement 0.1 micro-ohm to 1 ohmaccuracy below 0.0001 ohm +- 0.5% +- 1 slide wire division0.0001 ohm to 0.01ohm +- 0.1% above 0.01 ohm +- 0.05% reference resistance standards 0.001, 0.01, 0.1 and 1.0 ohmdividing ratio 1 , 10 , 100 and 1000 ohmmultiplying ratio 0.1 x 1, 1.0 x10, 10 x10 and 100 x10 ohm in shape of standard decade resistors. wheatstone bridge section range 1ohm to 1.0 megohmaccuracy 1 ohm to 100.0 k 0.1 % +- 1 step of lowest decade dialabove 100.0 k 1.0 % dividing and multiplying ratio in denominations of 1, 10, 100 and 1000 ohm variable arm formulated by decade dials of 10x0.1, 10x 1, 10 x10 and 10 x 100 ohm. accessories for kelvin-cum-wheatstone following accessories are required with the kelvin-cum-wheatstones support accessories to complete the measurement system. The bridge becomes the complete measurement system in conjunction with the following accessories: 1. conductivity attachment2. high amperage dc source ( 0 to 50amp. Suitable for bridge)3. spot reflecting galvanometer4. analogue galvanometer with selector switch for protection of spot reflecting galvanometer5. current reversing switch
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Rai Industrial Kelvin Double Bridge

RAI” INDUSTRIAL KELVIN DOUBLE BRIDGE Model: - 55X-IK is important instruments in the measurement of resistance as low as 0.2 Micro ohms to highest value of 11 ohms. Industrial Kelvin Double Bridge employs 10 Standard Resistors drawn from well aged manganin sheet having excellent stability & reproducibility. Manganin has the quality of very low temperature co-efficient which is a critical parameter for resistance standards manufacturing. Four standard decade dials, ratio selector & plug keys facilitate accurate null detection.


Features :

  • Precision measurement range from 0.2 microhm to 11 ohm.
  • Four terminals for accurate results.
  • Manganin wire having exceptionally low temperature co-efficient.
  • Remarkably long lasting resistance values with excellent stability.
  • Reproducible measurements.
  • Perfectly aged Manganin coils / strips employed in Kelvin Bridges.
  • Click type hard silver plated self-cleaning switches.
  • Wonderful elastic limits of MANGANIN.
  • Solid brass blocks for positive plug contacts
  • Excellent calibration stability.

 

Accessories for Industrial Kelvin Double Bridge :Following accessories are required with the Industrial Kelvin Double Bridge as support accessories to complete the measurement system. The Bridge becomes the complete measurement system in conjunction with the following accessories :

  • Conductivity Attachment
  • High Amperage DC Source ( 0 to 50 Amp. suitable for bridge)
  • Spot Reflecting Galvanometer
  • Analogue Galvanometer with selector switch for protection of Spot Reflecting Galvanometer.

Technical Specifications

Range of measurement 0.2 micro-ohm to 11 ohm
Accuracy Below 0.0001 ohm +/- 0.2% +/- 1 slide wire division
  0.0001 ohm to 0.01ohm +/- 0.1%
  above 0.01 ohm +/- 0.05%
Slide wire 0.001 ohm divided in 500 equal divisions.
Variable Standard Resistance 10 steps of 0.01 ohm
Multiplying ratio 0.01, 0.1, 1, 10 and 100

 

Range Factor Setting Total Range Resolution
0.01 0.0011 ohm 0.2 micro-ohm
0.1 0.011 ohm 2 micro-ohm
1.0 0.11 ohm 20 micro-ohm
10 1.1 ohm 0.2milli-ohm
100 11.0 2.0 milli-ohm
Switches Hard silver plated giving constant values up to 10,000  operations
Current source 10 Amp DC.

 

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Crocodile Clip

  • Min. Order (MOQ) 10 Set
  • Brand Name RA INSTRUMENTS
  • Country of Origin Made in India
  • Part Number RAI-CROC
  • Connector Gender MALE
  • Contact Material METAL
  • Maximum Operating Temperature AMBIENT
  • Termination Method Electrical connection
  • Current Rating 2, 5, 10, 15, 30
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Dna Model

  • Min. Order (MOQ) 1 Box
  • Material Plastic
  • Color Multiple Color
  • Project Subject DNA MODEL
  • Number of Models 1
  • Kit Required As per customer requirement
  • Suitable For Reasearch, Study and Display purpose
  • Brand Name RAI
  • Width As per customer requirement
  • Recommended Class 6- PHD
  • Length As per customer requirement
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Retailer of Electrical & Electronic Testing Devices from Ambala, Haryana by Ra Instruments
Post Buy Requirement

Electrical & Electronic Testing Devices

We offer the best product range of Portable Wheatstone Bridge, kelvin cum wheatstone bridges, Rai Industrial Kelvin Double Bridge, Crocodile Clip and DNA Model.

Portable Wheatstone Bridge

  • Features Robust construction, Long service life, Excellent performance
  • Uses measuring unknown electrical resistance.

Accuracy

Series Arm ± 0.05%
Ratio Arm ± 0.02%
Galvanometer Super sensitive analogue galvanometer in built

 

Supply Source

Mains 230+/-10%AC, 50Hz
Battery 4.5 Volts
Switch Phosphor bronze hard silver plated
Dimensions (in cms) 38(L)x28(D)x18(H)
Weight 5kg

 

View Complete Details

Kelvin Cum Wheatstone Bridges

We are offering kelvin cum wheatstone bridges. description:- rai precision kelvin-cum-wheatstone bridges model 55x-kw is important instruments in the measurement of resistance as low as 0.1 micro ohms to highest value of 1 ohm. Manganin has the quality of very low temperature co-efficient which is a critical parameter for resistance standards manufacturing. Kelvin cum wheatstone bridge is also constructed with manganin coils & sheet. Phosphor bronze silver plated switches have been used to minimize the residual resistance error. Four standard decade dials, ratio selector & plug keys facilitate accurate null detection. kelvin bridge section user can easily change over from kelvin section to wheatsone bridge section & vice-a-versa with the help of a selector switch. range of measurement 0.1 micro-ohm to 1 ohmaccuracy below 0.0001 ohm +- 0.5% +- 1 slide wire division0.0001 ohm to 0.01ohm +- 0.1% above 0.01 ohm +- 0.05% reference resistance standards 0.001, 0.01, 0.1 and 1.0 ohmdividing ratio 1 , 10 , 100 and 1000 ohmmultiplying ratio 0.1 x 1, 1.0 x10, 10 x10 and 100 x10 ohm in shape of standard decade resistors. wheatstone bridge section range 1ohm to 1.0 megohmaccuracy 1 ohm to 100.0 k 0.1 % +- 1 step of lowest decade dialabove 100.0 k 1.0 % dividing and multiplying ratio in denominations of 1, 10, 100 and 1000 ohm variable arm formulated by decade dials of 10x0.1, 10x 1, 10 x10 and 10 x 100 ohm. accessories for kelvin-cum-wheatstone following accessories are required with the kelvin-cum-wheatstones support accessories to complete the measurement system. The bridge becomes the complete measurement system in conjunction with the following accessories: 1. conductivity attachment2. high amperage dc source ( 0 to 50amp. Suitable for bridge)3. spot reflecting galvanometer4. analogue galvanometer with selector switch for protection of spot reflecting galvanometer5. current reversing switch
View Complete Details

Rai Industrial Kelvin Double Bridge

RAI” INDUSTRIAL KELVIN DOUBLE BRIDGE Model: - 55X-IK is important instruments in the measurement of resistance as low as 0.2 Micro ohms to highest value of 11 ohms. Industrial Kelvin Double Bridge employs 10 Standard Resistors drawn from well aged manganin sheet having excellent stability & reproducibility. Manganin has the quality of very low temperature co-efficient which is a critical parameter for resistance standards manufacturing. Four standard decade dials, ratio selector & plug keys facilitate accurate null detection.


Features :

  • Precision measurement range from 0.2 microhm to 11 ohm.
  • Four terminals for accurate results.
  • Manganin wire having exceptionally low temperature co-efficient.
  • Remarkably long lasting resistance values with excellent stability.
  • Reproducible measurements.
  • Perfectly aged Manganin coils / strips employed in Kelvin Bridges.
  • Click type hard silver plated self-cleaning switches.
  • Wonderful elastic limits of MANGANIN.
  • Solid brass blocks for positive plug contacts
  • Excellent calibration stability.

 

Accessories for Industrial Kelvin Double Bridge :Following accessories are required with the Industrial Kelvin Double Bridge as support accessories to complete the measurement system. The Bridge becomes the complete measurement system in conjunction with the following accessories :

  • Conductivity Attachment
  • High Amperage DC Source ( 0 to 50 Amp. suitable for bridge)
  • Spot Reflecting Galvanometer
  • Analogue Galvanometer with selector switch for protection of Spot Reflecting Galvanometer.

Technical Specifications

Range of measurement 0.2 micro-ohm to 11 ohm
Accuracy Below 0.0001 ohm +/- 0.2% +/- 1 slide wire division
  0.0001 ohm to 0.01ohm +/- 0.1%
  above 0.01 ohm +/- 0.05%
Slide wire 0.001 ohm divided in 500 equal divisions.
Variable Standard Resistance 10 steps of 0.01 ohm
Multiplying ratio 0.01, 0.1, 1, 10 and 100

 

Range Factor Setting Total Range Resolution
0.01 0.0011 ohm 0.2 micro-ohm
0.1 0.011 ohm 2 micro-ohm
1.0 0.11 ohm 20 micro-ohm
10 1.1 ohm 0.2milli-ohm
100 11.0 2.0 milli-ohm
Switches Hard silver plated giving constant values up to 10,000  operations
Current source 10 Amp DC.

 

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Crocodile Clip

  • Min. Order (MOQ) 10 Set
  • Brand Name RA INSTRUMENTS
  • Country of Origin Made in India
  • Part Number RAI-CROC
  • Connector Gender MALE
  • Contact Material METAL
  • Maximum Operating Temperature AMBIENT
  • Termination Method Electrical connection
  • Current Rating 2, 5, 10, 15, 30
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Dna Model

  • Min. Order (MOQ) 1 Box
  • Material Plastic
  • Color Multiple Color
  • Project Subject DNA MODEL
  • Number of Models 1
  • Kit Required As per customer requirement
  • Suitable For Reasearch, Study and Display purpose
  • Brand Name RAI
  • Width As per customer requirement
  • Recommended Class 6- PHD
  • Length As per customer requirement
View Complete Details
Tell Us What are you looking for? Will call you back

Contact Us