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AMPTEC
RESEARCH
i 2 3 4 5
AMPTEC 620LM Igniter Tester
OPERATION/MAINTENANCE MANUAL
see website for latest address, contact information and updates
http://www.amptec.com
AUSTIN, TEXAS USA - US DEFENSE LOGISTICS CAGE CODE 1CRL2
18JUNE2013 REV. B
PHONE +01 (512) 858-4045
FAX +01 (512) 3858-4340
website http://www.amptec.com
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Table of Contents
Related Manuals for Amptec Research 620LM
Summary of Contents for Amptec Research 620LM
- Page 1 AMPTEC RESEARCH i 2 3 4 5 AMPTEC 620LM Igniter Tester OPERATION/MAINTENANCE MANUAL see website for latest address, contact information and updates http://www.amptec.com AUSTIN, TEXAS USA - US DEFENSE LOGISTICS CAGE CODE 1CRL2 18JUNE2013 REV. B PHONE +01 (512) 858-4045 FAX +01 (512) 3858-4340 website http://www.amptec.com...
- Page 2 The specification, operation, drawing and schematic sections of this manual contain the unique detail that define the 620LM. Due to continuing product refinement, due to possible parts going obsolete and other component manufacturer changes, AMPTEC RESEARCH reserves the right on...
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Page 3: Table Of Contents
TABLE OF CONTENTS _______________________________________________________________ CHAPTER A: RECEIVING AND INITIAL INSPECTION Introduction to the AMPTEC 620LM Igniter Tester Unpacking and Inspection Isolated Continuous Operating Power - Setup and Use CHAPTER B: 620LM FAILSAFE OHMMETER SPECIFICATIONS Table B-2. Specifications CHAPTER C: REPLACEMENT, OPTIONAL AND ACCESSORY ITEMS... - Page 4 Drawing 620-070 620LM Main Board Electrical Schematic (Revision D) (620-070 DVM1 and 640-070 Current (I source) Source Drawing 620-601-2 620LM Display Board Assembly Drawing 620-075 620LM Cable Drawing - (Test Leads and Battery Charger) Drawing 620-077 620LM Relay Board Schematic CHAPTER I: UPDATES, MODIFICATIONS AND ADDENDUMS...
- Page 5 Please check the last chapter of By calling AMPTEC RESEARCH first, prior this manual for addendums that may apply to the to just returning the 620LM , we can often 620LM. troubleshoot (based on the symptoms you describe) and identify the problem over the phone (i.e battery loose in the battery holder).
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Page 6: Isolated Continuous Operating Power
620LM Igniter Tester. The meter is hardwired Isolated continous operating power for the to be “ON” whenever power is applied to the AMPTEC 620LM Igniter Tester is derived via a safety meter’s mating Molex connector on the multiple levels of isolation electronics and circuits rear panel. - Page 7 CHAPTER B - 620LM EXPLOSIVE SAFETY IGNITER TESTER - SPECIFICATIONS ______________________________________________________________ 620LM Resistance Range/Resolution 620LM Nominal Test Current/Failsafe Current Levels 2.0 W 2.0 W 2.0 K 20 M 2.0 K 20 M 100 µW 1.0 m 100 m 5 mA 50µA...
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Page 8: Available Accessories And Options
24VDC at 300mA. One adapter is provided as a Voltage output signal is directly proportional to standard accessory with every 620LM . It is fitted the 620 tester's ohm display measurement. (i.e. with the mating Molex connector that is specifically 1.2345 VDC for 12.345 ohms). -
Page 9: Chapter D: Operation, Function And Use
This section contains operating instructions for the AMPTEC 620LM Explosive Safety Igniter Tester. Recessed in the four feet on the bottom of the AMPTEC 620LM you will note there are 4 D-2. Front Panel Features and Operation screws (phillips head type) that are used for calibration access. - Page 10 Data Format - The RS232C I/O outputs a data AMPTEC 620LM Rear Panel with RS232C I/O string with the following format: Item 1 - The AMPTEC 620LM rear panel (shown above) contains many jacks, terminals, labels, and stickers. 1.2345E+3 The measurement is usually in Ohms The special AC to DC Adapter (item #1) must be left in (where E+3 = 10 scientific notation style) .
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Page 11: Connections
D-3. by "in series" test lead resistance and "contact" resistance. Next connect the 4 wire Kelvin wires or test leads into the AMPTEC 620LM Igniter Tester rear panel. IGNITER TESTER LEAD RESISTANCE For 620 series test leads other than those termi-... -
Page 12: Failsafe Operation
Tester is line isolated from the AC line to 3 KV A precision 1.0 Ohm test resistor test resistor can DC or AC when only used 620LM-DC AC wall be used for testing mid-scale performance of the Power Adapter/conditioner (supplied with the 2.0 Ohm range. -
Page 13: Chapter E General Operation And Design
620LM Tester and it’s cus- range only?". If the 620LM Tester does not tomer service department can also provide... - Page 14 - i.e. connect to an earth ground to avoid a static discharge to a static sensitive component. Handle all 620LM internal components as if they are static sensitive if you are not sure.
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Page 15: Circuit Descriptions
MULTIPLEXER INPUT INTEG BUFFER SWITCH COUNTERS CONTROL LOGIC COMPARATOR ZERO CROSSING DETECTOR Figure E1 - AMPTEC 620LM FUNCTIONAL BLOCK DIAGRAM COUNTS PHASE III PHASE I PHASE II I0.00 I I0.000 20.00 I 4 ½ DIGIT ZERO CROSSING POLARITY OCCURS DETECTED... - Page 16 C INT R INT BUFFER BUFFER INTEGRATOR COMPARATOR 1 µF ZERO CROSSING DETECTOR C REF C AZ C STRAY V IN FIGURE E-2A. PHASE l AUTO-ZERO C INT R INT BUFFER BUFFER INTEGRATOR COMPARATOR 1 µF ZERO CROSSING DETECTOR C REF C AZ C STRAY V IN...
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Page 17: Ohms-To-Dc Converter
3 closes a loop around the integrator and BCD data is converted to seven segment format comparator, the purpose of which is to charge by IC4. When the 620LM electronics are in the Auto-Zero capacitor until the integrator open circuit or over-range mode the display output dose not change with time. -
Page 18: Failsafe Design
(15mA) max E-6. Failsafe Design The AMPTEC 620LM Tester is powered by a Reference to the AMPTEC 620ESTester Igniter rechargeable internal battery pack and cannot be Tester schematic will show that the output of... -
Page 19: E-7 . Ultra-Safe Power Supply Scheme
The 620LM Tester measurement circuitry is also failsafe current limited, even under worst case component failure. E-7 . Ultra-Safe Power Supply Scheme The +5 volt power supply is provided directly by the batteries (for driving the LED displays and digital logic). The ±5VD is used for driving IC8, the low battery detection circuit. -
Page 20: General
The recommended interface. calibration interval is 1 year. F-3-1. Zero Offset Adjustment (20 ohm and The AMPTEC 620LM igniter tester is a four higher ranges) wire Kelvin ohmmeter. The AMPTEC 620LM 1. Connect the rear panel 4 Wire Kelvin... - Page 21 F-3-5. 620LM Igniter Tester Diode Test The diode test function of the 620LM Igniter Tester is for checking diodes. To do this, the voltage compliance output of the constant current supply is increased and the voltage sensitivity of the voltmeter section is decreased.
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