AMPTEC 620EXV Intrinsically Safe "No Volts" Voltmeter A

NSN 6625-pending

The AMPTEC 620EXV "No Volts" Intrinsically Safe (Armament Systems) Voltmeter is an EEX certified "Intrinsically Safe"  portable digital Voltmeter for safely testing voltage on firing and related armament system's wiring in explosive/volatile atmospheres. It has a daybright green "GO" LED <60mV indicator (for safe) and a red "NO-GO" LED for >60 mV (for unsafe) level present. The DVM informs the operator of any voltage level from 10 mV up to 99.99 V,  and withstands 120VAC input without damage. Checks test lead integrity and is British Defence Ministry Safety Board & ATEX Certified as an EEX Approved Safety Voltmeter. 

  ATEX certified "Intrinsically Safe" Ex nA nL IIC T4  

from 0°C to + 50°C. 

After extensive environmental tests (1.0 KG Steel Ball Faceplate Impact, Temperature, Dust and Salt Water spray) and exhaustive electronic circuit and mechanical review (for Intrinsic Safety Compliance) SIRA an independent British testing laboratory has certified the AMPTEC 620EXV Safety Voltmeter as "Intrinsically Safe". They further state the AMPTEC 620EXV has ATEX Safety Certified Rating as being  Ex nA nL IIC T4  and is also Ex II 3G status from 0°C to + 50°C compliant.

*  4 digit resolution from 0.00 volts RMS AC/DC Volts to 99.00 Volts AC/DC 

* Easy to Use , No Guess Work required - If the voltage under test is less than 60 mV it is considered safe and the green daybright "GO" LED is lit and PASS is displayed then the actual voltage. If the voltage is more than 60 mV its considered hazardous and the red daybright "NO-GO" LED is lit, and "Fail" is displayed and then the actual (ACVrms and or DCV) voltage is automatically displayed in standard digital voltmeter format.

*  Selected by the UK Ministry of Defence as the replacement for their aging inventory of old analog  "No Volts" meters - ideal replacement for obsolete, and aging analog "No Volts" meter. The AMPTEC 620EXV offers uncompromising Safety, Ruggedness, 4 digit resolution, 0.1 milliohm resolution with "No Warm-up" required its ready to use when turned on.   

*  Instant "ON", "No Waiting for a Warm-up Period", it's ready to use immediately after being powered up - The solid state internal reference(s) used by the AMPTEC 620EXV "No Volts" Safety Voltmeter make it ready to use the instant it's power switch turned "on". 

*  Reinforced All metal ( Faraday Cage) construction (front, back and all sides), textured powder coated aero aluminum (AL 5052 alloy), all connected to front panel chassis ground jack - meets DEF STAN 59-41 Radiated Emmissions DRE01.B/DRE02.B and Susceptability DRS01.B/DRS02.B Standards . At -20°C, the unit's front panel has been hit with 1 KG Steel ball impact (from 0.7 meter drop) and still does not allow any water (IP-54) to penetrate into the interior of the instrument.

* Separate battery compartment, operates on 4 ea "AA" re-chargeable NiMH batteries. They are field replaceable batteries without breaking the calibration seal. There is "No access to any electronics inside the unit's battery compartment". It's also water-tight (gasket sealed compartment) and is corrosive resistant Per MIL PRF 28800D to any battery leakage or any chemical corrosion.

* Ruggedized use -Silicone rubber boot covers on all switches protects the instrument against saltwater spray, rain and dust.

* United Kingdom's AMPTEC 620EXV "NSN package" includes 1) protective conductive carrying case, 2) Operator/maintenance manual and 3) U.S.A. N.I.S.T Traceable Calibration Certificate.

The AMPTEC 620EXV No Volts

Rear Panel view of the AMPTEC 620EXV "No Volts" Safety Voltmeter

The AMPTEC 620EXV "No Volts"  Safety Voltmeter can typically operate for up 24 hours without a charge on its 4  "AA" NiMh batteries. The AMPTEC 620EXV "NO VOLTS" meter operates on 4  "AA" rechargeable batteries (NiMH ). It's automatically powered "off" and can't be used when charging. The battery compartment is separate from all electronics. The user can change batteries and not effect the instrument's calibration. Calibration is performed covers "ON", remove calibration sticker & hole plugs for access. The battery compartment cover is gasket backed to provide a water tight seal. The battery compartment is also MIL PRF 28800D compliant to be protected against any battery corrosion (leaking alkaline material).  There is also a convient side panel mounted easy grip handle for carrying the unit outside of its padded case ( NSN package etc.).

Easy to Calibrate "No Covers to Remove"

In addition, once the tamper resistant calibration sticker is removed the the AMPTEC 620EXV No Volts Safety  Voltmeter's rear panel, it's a breeeze to calibrate. There are "No Covers" to remove, the PMEL or calibration facility simply connects the  620EXV No Volts Safety  Voltmeter's to the proper Voltage Standard and has two simply adjustments to make (trigger set@60 milliohms and fullscale set@30.00 VRMS ohm). Calibration hole plugs are also included (inside carrying case pocket) if the AMPTEC 620EXV No Volts Safety  Voltmeter user desires to use them.

Integrity of Measurement and an instrument's accuracy is important to us.  It should be important to you. To provide proof, in writing, that an instrument is truly accurate, many instrument companies charge extra for a new instrument's calibration certificate, Not at AMPTEC RESEARCH. All new AMPTEC instrumentation comes with a U.S. N.I.S.T. traceable calibration Certificate, good for 1 year, at "No Extra Charge". After the 1 year calibration interval has expired on your AMPTEC meter, we can still re-certify the product for you. Contact our customer service department for details.

The AMPTEC 620EXV "No Volts" Safety Voltmeter Mil 5015C Compatible weather-proof Test Lead connector with cap provides a secure & popular military spec "Test Lead" connection. Other versions are available contact the Sales Department at AMPTEC RESEARCH for your requirements.  

                                        

Specifications:
Accuracy (1 year):	Digital Voltmeter Display: ± 10%, DC or AC 10Hz to 10 KHz. "GO"(<60 mV) and "NO-GO" (>60mV) LED Comparitor accuracy is ± 10%  (low limit is 54 mV to 66 mV DC or AC) . Operating Temperature Range  . . . . . . . . . .   -20°C +55°C
Display:	4 digit (9999) L.C.D.  - 10,000 counts, Display visible day or at night (high contrast yellow backlight) Liquid Crystal Display (LCD) with a backlight for viewing the 620EXV display in dim ambient light conditions (counts up to 30.00 V) with 10 mV LCD resolution (special cold temp display good to -20°C).
Terminal Configuration:	Mil 5015 C Compatible Test Lead Connector is standard
Battery Level Indicator	Meter displays "LOW BAT"
Overload Indication:	Display indicates >>>OR
Operating Temperature Range	Operating Temperature Range  . . . . . . . . . .   -20°C +55°C
Storage Temperature Range	Storage  Temperature Range . . . . . . . . . . .   -40°C to +70°C
Conversion Rate	Approximately 3 readings per seconds
Calibration	rear panel access - covers "on"  (1 year calibration interval) -  includes U.S. N.I.S.T. Calibration Cert "No Extra Charge"
Power:	4 x AA rechargeable NiMH batteries - Rechargeable battery pack inside separate chemical resistant battery compartment houses (4 ea "AA") 1.2 VDC NiMH batteries, Notice: Observe battery polarity when replacing. Do not mix different brands and never replace a single battery, replace all four.
Max Internal Voltage:	6.0 VDC
Smart Battery Charger:	120VAC 60 Hz to 220VAC 50 Hz input ~ 350 mA DC output, automatically "turns off"  operating power for the 620EXV when the charger is plugged in the rear panel charging jack. (Non- Hazardous Environment)
Weight	Ingress Protection (weatherized) rating IP53, rated at IP67 in the transit case (IEC 60529), see DEF STAN 66-31 test results. Meets UK Def Stan 66-31 (EN 60068-2-52 Salt Fog Test Kb severity 2), Part 3, Issue 1, Dust/Water test to IEC 60529, IP 53
Marks  and Certifications	Ex nA nL IIC T4 and
UK M.O.D. MIL STDs	Meets UK Def Stan 66-31 (EN 60068-2-52 Salt Fog Test Kb severity 2), Part 3, Issue 1, Dust/Water test to IEC 60529, IP 54
Size:	Instrument Dimensions  . . . . . . 7.5" W x 6" D x 2.75" H
Weight	Weight . .  . . . . . . . . . . . . . . .. . . . . . 5 lbs  net; 7 lbs shipping