620EXV Intrinsically Safe Voltmeter and "No Voltage" Comparitor
(Green LED "Safe"or Red "Hazardous Voltage level" daybright
LED seen from 100 feet away)A
The AMPTEC 620EXV "No
Volts" Intrinsically Safe Voltmeter is both an
EEX certified "Intrinsically Safe" portable digital voltmeter and also a Voltage Comparitor with (daybright green LED) "GO - Safe level or No Voltage" or (daybright red LED) "NO-GO" a hazardous voltage level is
present (preset level too high).
The LEDs' can be seen from 100 feet away - It is used
to safely monitor the absence or presence of any "stray" voltage (AC or DC or
both) between any two connections (ie chassis and test point connection) in an
explosive/volatile or hazardous atmosphere.
It has both a daybright green "GO" LED
for a preset level such as <60mV, 100 mV, 150 mV, 250 mV etc or any
other voltage level (contact AMPTEC for details) indicator (for
safe) and a red "NO-GO" LED for any level greater than the preset level
mV,100 mV, 150 mV, 250 mV etc, whenever an unsafe or
hazardous voltage level becomes present. The DVM informs the
operator of any voltage
level from 10 mV up to 99.99 V, and withstands 120VAC input
damage. Checks test lead integrity and is British Defence Ministry
Safety Board & ATEX Certified as
an EEX Approved Safety Voltmeter.
"Intrinsically Safe" Ex
nA nL IIC T4
from 0°C to + 50°C.
extensive environmental tests (1.0 KG Steel Ball Faceplate
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
They further state the AMPTEC 620EXV has ATEX Safety
Certified Rating as being Ex nA nL
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, Voltage Monitor Comparitor - If
any voltage (AC, DC or both) under test is less than (a specified
level ie. 60 mV), it is considered safe and the green daybright "GO" LED is
PASS is displayed then the
actual voltage. If the voltage is
more than (a specified preset level ie 60 mV) its considered
hazardous and the red daybright "NO-GO" LED
is lit (visible from 100 feet away), 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"
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
use immediately after being powered up - The solid state
internal reference(s) used by the AMPTEC 620EXV "No Volts"
Voltmeter make it ready to use the instant it's power
* Reinforced All
Faraday Cage) construction (front, back and all sides),
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
(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
Ruggedized use -Silicone rubber boot covers on all
the instrument against saltwater spray, rain and dust.
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
Panel view of the AMPTEC 620EXV "No Volts" Safety Voltmeter
The AMPTEC 620EXV "No
Voltmeter can typically operate for up 24 hours without a
on its 4 "AA" NiMh batteries. The AMPTEC 620EXV "NO VOLTS"
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
mounted easy grip handle for carrying the unit outside of its padded
case ( NSN package etc.).
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
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
simply adjustments to make (trigger set@60
milliohms and fullscale
firstname.lastname@example.org 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.
of Measurement and an instrument's accuracy is important to us.
It should be important to you. To provide proof, in
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
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.
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
available contact the Sales Department at AMPTEC RESEARCH for your
Photo of the AMPTEC
with the following components:
5015 C Compatible Test Lead Connector with water
tight cap (other versons available).
Item B) Chassis (case) Ground Connector
on side (standard DMM banana jack type) to prevent ESD.
Item C) 4½
Digit LCD Display with
Low Battery Indicator (runs for 24 hours on a single charge - uses
rechargeable NiMH batteries). Displays 'PASS" if voltage is
mV or "FAIL" if the voltage is >60 mV, displays the actual
(Both ACV and/or DCV ), Displays cable test integrity and
Over-Range Indicator as
just a few
Item D) Display
Back-Light switch (silicone
rubber boot switch cover protection) high contrast
Item E) Power
On/Off switch (hold
down for ~ 2 seconds for “Power On”) silicone boot
Self-Test Display Status Indication
Item G) Easy
Interpretation of voltage measurement test/result by operator - Green
LED for "GO" (pass if voltage measured is <60mV and Red LED for
"FAIL" if voltage is >60 mV .
sprayed with a
saturated salt fog mixture, or micro-fine dust particles, frozen to
soak @ -13°C, heated to +55°C, or vibrated and then
bumped a 1000 times the AMPTEC 620EXV "No Volts" Voltmeter PASSES all
United Kingdom Ministry of Defence DEF STAN 66-31 tests and keeps
working. The bottom line, the AMPTEC 620EXV Safety Voltmeter
rugged and withstands cold winter flight line use and use in hot summer
desert heat/dust and keeps working without a problem.
|Accuracy (1 year):
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
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).
Mil 5015 C Compatible
Test Lead Connector is standard
displays "LOW BAT"
Temperature Range . . . . . . .
. . . -20°C +55°C
Temperature Range . . .
. . . . . . . . -40°C to
3 readings per seconds
panel access - covers "on" (1 year calibration interval) -
includes U.S. N.I.S.T. Calibration Cert "No Extra Charge"
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
60 Hz to 220VAC 50 Hz input ~ 350 mA DC
automatically "turns off" operating power for the 620EXV when
charger is plugged in the rear panel charging jack. (Non- Hazardous
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
| Ex nA nL IIC T4 and
M.O.D. MIL STDs
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
Dimensions . . . .
. . 7.5" W x 6" D x 2.75" H
. . . . . . . . . . . . . . . . .. . . . . . 5 lbs
net; 7 lbs shipping