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MODELS 6108,
610BR ELECTROMETERS
GEXERAL 3ESCRI?TIO"
Voltage
Recorder
Output:
+3 volts
for
full-scale
input.
Internal
resistance
is
3 kil-
ohms.
Output
polarity
is opposite
input
polarity.
Gain:
0.03,
0.1,
etc.,
to 3000
Frequency
Response
(Within
3 db):
dc to 300 cps at a gain
of
3000,
rising
to 25 kc
at a gain
of
30, decreasing
to 2.5 kc at a gain
of 0.03.
Noise:
3% rms of
full
scale
at a gain
of
3000,
decreasing
to 1% at gains
below
100.
Current
Recorder
Output:
tl
milliampere
for
full-scale
input,
variable
T5% with
LLiOO-
ohm recorders.
GENERAL :
POLARITY:
METER Switch
selects
left
zero
(positive
or negative)
or center-zero
scales
Output
polarity
is not
reversed.
LINE STABILITY:
A 10% change
in
line
voltage
will
ca"se
less
than
a LO-microvolt
merer
defLection
on aLL ranges.
CONNECTORS :
Input:
uhf
type;
ground
binding
post.
output:
Voltage
or current,
AmphenoL 80-PCZF;
Unity-gain,
binding
posts
POWER:
105-125
or 210-250
volts
(switch
selected):
50 to 1000 cps;
IO Watts
DIMENSIONS,
WEIGHT:
Model
6108:
10-l/2
inches
high
x 6-S/8
inches
wide
x 10 inches
dee?;
net weight,
12 pounds.
Model
610BR:
5-l/4
inches
high
x 19 inches
wide
x 10 inches
deep;
net
weight,
12 pounds.
ACCESSORIES SUPPLIED:
Mating
input
and output
plugs;
3:2
power
line
adapter;
binding
plug.
l-5.
APPLICATIONS.
a.
Voltmeter
applications
include
directly
measuring
potentials
of vacuum
tube
plates
and grids,
pH electrodes,
piezo-electric
crystals,
capacitors
and electrochemical
cells,
and the
gate
potentials
of
field
effect
transistors.
With
the Model
2501 or 2503 Static
Detector
Probe,
the Model
610B can measure
electrostatic
voltages.
b.
As a picoammeter,
the Electrometer
can measure
mass spectrograph
currents.
It
can
be used with
photo
multiplier
tubes,
flame
and beta
ray
and lithium
ion-drift
detectors.
Other
uses are
in gas chromatograph
work,
nuclear
studies,
plasma
physic
studies
and
vacuum studies.
Also,
it
can be used as a current
null
detector
with
an accurate
current
reference
source.
c.
As an ohmeter,
its
uses
include
measuring
diode
characteristics,
insulation
resis-
tance,
and resistor
voitage
coefficients.
With
the Model
6105 Resistivity
Adapter
and a
power
supply,
the Node1 610B can measure
volume
and surface
resistivities.
d.
In addition
to measuring
charge
directly,
other
coulombmeter
uses
are measuring
charge
current
over
a period
and obtaining
integral
curves
of
time-varying
currents.
The Model
6108 can measure
the
total
energy
output
from
a pulsed
laser
on its
coulomb
ranges
when
used with
a calibrated
photo
tube
or photo
diode.
It
also
can be used as a charge
ampli-
fier
to measure
pieza-electric
crystal
outputs.
1066R
3
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