Download 630ES Checkout Routine (PART 2)

20 Ohm Range Checkout
1. Next press the 20 ohm range switch, you
should see the 20 ohm range indicator LED
illuminate.
The 20 ohm range
switch
Red / High
banana lead
Black / Low
banana lead
RESISTANCE
4
2
6
8
MILLIAMPERES
10
}
To "CONNECTIONS" port
2. Plug the red banana jack lead into the 10
Ohm 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" then
the 20 ohm range is good.
10 ohm resistor
1 OHM
190K OHM
I0.008
digital reading
(around 10 ohms)
200 Ohm Mid-Scale Range Check
Red / High
banana lead
Black / Low
banana lead
1. Next press the 200 ohm range switch, you
should see the 200 ohm range indicator LED
illuminate. The 200 ohm range
switch
4
2
8
10
RESISTANCE
6
MILLIAMPERES
}
To "CONNECTIONS"
port
100 ohm resistor
2. Plug the red banana jack lead into the 100
Ohm 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" then
the 200 ohm range is good.
1 OHM
190K OHM
meter's digital reading
(around 100 ohms)
200 KOhm Midscale Range Check
1. Next press the 200 Kohm range switch,
you should see the 200 ohm range indicator
LED illuminate.
Black / Low
banana lead
Red / High
banana lead
The 200 KOhm range
switch
RESISTANCE
4
2
6
8
MILLIAMPERES
10
}
To "CONNECTIONS"
port
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) check
looks "OK" then the 200 Kohm range is good
to mid-scale is "OK".
100 KOhm resistor
1 OHM
190K OHM
meter's digital reading
(around 100 KOhms)
200 Kohm FullScale Range Check
4
2
6
8
MILLIAMPERES
10
}
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".
Black / Low
banana lead
Red / High
banana lead
To "CONNECTIONS"
port
190 KOhm resistor
1 OHM
190K OHM
meter's digital reading
(around 190 KOhms)
A 4-WIRE KELVIN RESISTANCE MEASUREMENT
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.
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J1 - Main 630ES Front Panel Connector
AMPTEC 630 and
640 series
A= I High
B= V High
J1 Main “Connections”
Jack
C= V Low
G
D= I Low
E=
F= Ground (-)
G= Faraday Cage Shield
H= +5 V
A
H
B
C
E
D
F
G
H
A
F
B
E
C
CONNECTIONS
D
TEST LEADS
OR
BATTERY CHARGER
A= I High
B= V High
C= V Low
D= I Low
G=Chassis Ground
4-Wire Kelvin Clip
Insulating Spool between
the upper and lower jaw
Option "630-304" Gold 4-Wire Kelvin Banana Jack
Test Lead Set ( twin single banana jack version also available)
This 630ES User Instruction Card – found in the lid of the unit ( www.amptec.com)
AMPTEC 630ES EXPLOSIVE
SAFETY IGNITER TESTER
To remove the lid
Slide out the hinge pins
AM P TEC
RESEARCH
EXPLOSIVE SAFETY
IGNITER TESTER
9
630ES
- I9999
RESISTANCE
2W
20 W
9
200 W 200K W
8
1 OHM
190K OHM
AMPTEC 630ES FEATURES
1. Calibration/Maintenance access screws
2. 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.
3. Handles - see item #1 then lift for calibration access
4. Single Access Multi-purpose Main Connector - for either
measuring test lead hookup or connection to battery charger.
The power switch (item #21) must be in “ Off/Charging
mode” while the battery charger is connected to recharge the
batteries.
5. Milliammeter - measures actual 630ES test current levels.
6. Minus sign - indicates “low battery level” recharge tim e
7. Fuse Access - 2 ampere fast blow type for general
operation, check fuse if unit is non-operational. ( 2AG FAST BLOW)
8. Zero pot - Adjusts shorted resistance offset (i.e test leads).
9. Keylock Switch - Safe mode shorts inputs together, disconnects & isolates user inputs from 630ES measurement
electronics. Measure mode switches user inputs to ohmmeter.
10. Input jack - Plug into the 630ES Ohmmeter meter test
lead
11. Input jack of 0.1 ohm test resistor for checking the lower
end of scale or zero accuracy of the 2 ohm & 20 ohm range.
12. 1 ohm test resistor for checking the mid-scale
functionality of the 2 ohm range.
13. 10 ohm test resistors for checking the mid-scale
functionality of the 20 ohm range of the 630ES.
14. Input jack for the 630ES common test lead (plug-in black
banana jack)- also accesses the “shield” of the Faraday Cage.
15 and 16. 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.
17. 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).
18. O-ring seal(s) in 630ES lid & under the front plate
provide Water Resistant seals, re-seat seal if loose.
19. Tight Squeeze Flip Latch Area - waterproof seal when
closed, press down lid with palm and flip latch to open unit.
20. Resistance Ranges - 2 W , 20W , 200W , and 200KW silicone boot provides water-resistance switch cover ( LED
indicates the selected range).
21. Power On or OFF/Charging Switch
22. Beveled Display Hood and Super Bright LED Display
readable in sunlight.
23. Test Leads wrap around inside rim of 630ES lid, with
Velcrotm style hook and loop fastening.
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 (electroexplosive devices.
Do not forget the website for tech support
www.amptec.com/tech.htm
The password protected tech library
offers a variety of 630ES support related
technical documents, manuals, schematics
and more . . .
THE END