RESISTANCEThe 20 ohm range switch

20 Ohm Range Checkout

1. Next press the 20 ohm range switch, you should see the 20 ohm range indicator LEDilluminate.

2. Plug the red banana jack lead into the 10Ohm reference resistor. 3. The meter's display should read about or approx. 10 ohms (again maybe 9.985 ohms or even 10.015 ohms). If the 10 ohm reference resistor check looks "OK" thenthe 20 ohm range is good.

MILLIAMPERES2

4 68

10

190K OHM

1 OHM

Red / High banana lead

Black / Low banana lead

To "CONNECTIONS" port}

10 ohm resistor

digital reading(around 10 ohms)

I0.008

RESISTANCE

The 200 ohm range switch

1. Next press the 200 ohm range switch, you should see the 200 ohm range indicator LEDilluminate.

2. Plug the red banana jack lead into the 100Ohm reference resistor. 3. The meter's display should read about or approx. 100 ohms (again maybe 99.85 ohms or even as high 100.28 ohms). If the 100 ohm (reference resistor) check looks "OK" thenthe 200 ohm range is good.

200 Ohm Mid-Scale Range Check

MILLIAMPERES2

4 68

10

190K OHM

1 OHM

Red / High banana lead

Black / Low banana lead

To "CONNECTIONS" port

}100 ohm resistor

meter's digital reading (around 100 ohms)

RESISTANCE

The 200 KOhm range switch

1. Next press the 200 Kohm range switch, you should see the 200 ohm range indicator LED illuminate.

2. Plug the red banana jack lead into the 100KOhm reference resistor. 3. The meter's display should read about or approx. 100 Kohms (again maybe 99.85 KOhms or as high as 100.28 Kohms is fine). If the 100 Kohm (reference resistor) check looks "OK" then the 200 Kohm range is good to mid-scale is "OK".

MILLIAMPERES2

4 68

10

190K OHM

1 OHM

Red / High banana lead

Black / Low banana lead

To "CONNECTIONS" port

}100 KOhm resistor

meter's digital reading (around 100 KOhms)

200 KOhm Midscale Range Check

1. Next press the 200 Kohm range switch, you should see the 200 ohm range indicator LED illuminate.2. Plug the red banana jack lead into the 100 KOhm reference resistor. 3. The meter's display should read about or approx. 100 Kohms (again maybe 99.85 KOhms or as high as 100.28 Kohms is fine). If the 100 Kohm (reference resistor) mid-scale check looks "OK" then the 200 Kohm range is good to mid-scale is "OK".

200 Kohm FullScale Range Check

MILLIAMPERES2

4 68

10

190K OHM

1 OHM

Red / High banana lead

Black / Low banana lead

To "CONNECTIONS" port

}

190 KOhm resistor

meter's digital reading (around 190 KOhms)

A 4-W IRE KELVIN RESISTA NCE M EASUR EM EN T

The AMPTEC 630ES measures DC resistance with a 4 Wire Kelvin technique. Two of the wires Current high and Current Low pass through the resistance under test in a current loop - as part of a failsafe constant current source with only 5 mA in the current loop. It doesn't matter if the test leads are longer with more in-series resistance or even if there is some contact resistance with the connection to the resistance under test, because the constant current source's compliance voltage works to maintain a constant 5 mA (on the 2.0 ohm range) flowing in the loop.

The other 2 wires (Voltage high and Voltage low) sense the voltage drop across the "resistance under test" (i.e. a squib). No measurement error in the voltage leads - The voltage measurement is high impedance – This means,virtually no current is drawn in the voltage sense lead wires. With "virtually no current drawn, in the lead wires there is virtually "No voltage drop or No Voltage Drop error in the voltage sense wires. Conclusion – With 4 Wire Kelvin, long distance test leads do not create a measurement error as long as you have compliance voltage drive remaining in the constant current loop. If test resistance is too high for the range, the 630ES display flashes "Overrange" meaning out of compliance

voltage.

AMPTEC 630 and 640 seriesJ1 Main “Connections” Jack

A

BC

D

E

F H

G A= I H ighB= V H ighC = V LowD = I LowG =Chassis G round

A Militarized Style for Kelvin Test Lead Connections

CONNECTIONS TEST LEADS OR BATTERY CHARGER

A= I HighB= V HighC= V LowD= I LowE=F= Ground (- )G= Faraday Cage ShieldH= +5 V

A

BC

D

E

F H

G

J 1 - Main 630ES Front Panel Connector

Option " Gold 4-Wire Kelvin Banana Jack Test Lead Set ( twin single banana jack version also available)

630-304"

Insulating Spool between the upper and lower jaw

4-Wire Kelvin Clip

1. 2.

3.4

567

21. 22

23

.

89

10

11

12

13

14

15 and 16

17

18

19

20

.

.

Calibration/Maintenance access screws

Multi-purpose Main Connector - for either measuring

Power On OFF/Charging Switch. Beveled Display Hood and Super Bright LED Display

readable in sunlight.. Test Leads wrap around inside rim of 630ES lid, with

Velcro style hook and loop fastening.

Single Access

offset (i.e. Keylock Switch - shorts inputs together, dis-

connects & isolates user inputs from 630ES measurement electronics. switches user inputs to ohmmeter.

. Input jack - Plug into the 630ES Ohmmeter meter test lead

. Input jack of

1 ohm test resistor for checking the mid-scale functionality of the 2 ohm range.

10 ohm test resistors for checking the mid-scale functionality of the 20 ohm range of the 630ES.

. Input jack for the 630ES common test lead (plug-in black banana jack)- also accesses the “shield” of the Faraday Cage.

100 ohm, and 100K ohm test resistors for checking the mid-scale functionality of the 200 ohm and 200 K ohm ranges of the 630ES.

190K ohm test resistor - if shunted in parallel during an ”Open Circuit” test on 200K ohm range, a shift <40 counts means resistance under test is > 200 Megohms (see manual).

. O-ring seal(s) in 630ES lid & under the front plate provide Water Resistant seals, re-seat seal if loose.

Tight Squeeze Flip Latch Area - waterproof seal when closed, press down lid with palm and flip latch to open unit.

Safe mode

Measure mode

.

.

W W W

or

tm

Purge Valve - Provides Air Pressure Equalization to open. If unit will not open (i.e. after transit) due to an air pressure change, open purge valve to equalize pressure.

Handles - see item #1 then lift for calibration access

test lead hookup connection to battery charger. The power switch (item #21) must be in “

” while the battery charger is connected to recharge the batteries.. Milliammeter - measures actual 630ES test current levels. . Minus sign - indicates “low battery level” recharge tim e . Fuse Access - 2 ampere fast blow type for general

operation, check fuse if unit is non-operational.

0.1 ohm test resistor for checking the lower end of scale or zero accuracy of the 2 ohm & 20 ohm range.

orOff/Charging

mode

. Zero pot - Adjusts shorted resistance test leads).

.

Resistance Ranges - 2 , 20 , 200 , and 200K - silicone boot provides water-resistance switch cover ( LED indicates the selected range).

. W

RESEARCHAMPTEC

I9999-

630ES EXPLOSIVE SAFETYIGNITER TESTER

AMPTEC 630ES EXPLOSIVE SAFETY IGNITER TESTER

190K OHM

AMPTEC 630ES FEATURES

1 OHM

2 20 200 200K W W W W

9

8

9

To remove the lid Slide out the hinge pins

( 2AG FAST BLOW)

RESISTANCE

This 630ES User Instruction Card – found in the lid of the unit ( www.amptec.com)

Conclusion – After verifying the 200 Kohm range of the meter is "OK" the 630ES is ready to safely measure the resistance of squibs, explosive bolts and a variety of EEDs (electro-explosive devices.

Do not forget the website for tech supportwww.amptec.com/tech.htm

The password protected tech libraryoffers a variety of 630ES support related technical documents, manuals, schematicsand more . . .

THE END