Dytran 3122C, 3122C2 Operating Instructions Manual

Dynamic Transducers and Systems

21592 Marilla St. • Chatsworth, CA 91311 • Phone [phone]
www.dytran.com • e-mail: [e-mail]

OG3122C.docx
REV F ECN 13551 07/10/17

OPERATING INSTRUCTIONS

MODEL 3122C & 3122C2

HERMETICALLY SEALED

CHARGE MODE ACCELEROMETERS

NOTE
Models 3122C and 3122C2 are essentially
similar instruments with the following exceptions:
The upper temperature limit for Model 3122C is
+375 degrees F while the upper temperature .
for Model 3122C2 is +500 degrees F. The
sensitivity of Model 3122C is 50 pC/g while
the 3122C2 is 15 pC/g. Most other
specifications are similar. (Check specification
sheet for other differences).

This manual includes:
(1) Outline/installation drawing 127-3122C
(2) General Guide to Charge Mode Accelerometers

7

INTRODUC

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Mod
Models, the
Model 3122
temperature
3122C2 has
Both models
hermetically
welded cons
housing and
The
dense tungs
the piezoele
preload scre
This is so th
between ma
linearity low

ION

el series 312

0 pC/g Mod

2. Model 31
limit of +375
an upper te

feature her

sealed 10-3

ruction. The

base is 316

seismic mas

en alloy, is ti

tric crystals

under hun
re is absolut
s, crystals a

nd the natu

DESCRIPTI

N

FIGURE 1

ROSS SEC

Figu
of Models 31
preloaded a
acceleration
piezo crystal
acceleration

re 1 is a repr

22C. The se

ainst the pie

into the bas

s giving accu

to charge ou

INSTALLAT

Bot
use of a pro
stud. To mo
drill and tap
depth of .15

ION

Models are

ided 10-32
nt the 3122

10-32 mou

inch minim

MODE

L 3122C CH

C consists
l 3122C an
2C has an

ºF, while th

perature limi

etic sealing
connectors
metal used f
stainless st

, made from

htly preload
y means of

reds of pou

ely no relativ

d base kee

al frequency

ION OF MO
sentative cr

smic mass i

o crystals s

is transferre

rate transfer

put.

esigned for
odel 6200
/C2, it is ne
ting hole to

m perfect th

OPERATI

RGE MOD

f two
the 15 pC/g
pper
Model

t of +600 ºF.

y use of

nd laser

r the

el.

a very

d against
special

ds of force.

motion

ing the non­high.

DEL 3122C

ss section

heavily

the

directly the

from

ounting by

ounting

essary to

minimum

ead in the

NG INSTRU

HERMETIC

center
inches

select
inch di

s a r
surfac
be. A
results

torque
applyi

OPER

to use
the ch
accele
signal
acquis

conne
and e
noise
10-32
BNC.

use is
conve
Mode
betwe
conve
charg
fixed s

gain,
to the i

MAIN

the ca
other
contac
shooti
returni
neces

factor
Return

TIONS

SEALED A

of a circular

in diameter.

To install M

(or prepare)

meter mou

le of thumb,

, the better t

urface flat to

for the high

Use the pr

the 3122C t

g the torque

TION

To operate

an electrost

rge mode o

rometer to a

hich may th

ition instrum

For laborat

ted to any vi

en with most

able such a

o 10-32 or t

xx is the len

recomm

he Dytran S

t the 3122C

LIVM) opera

n the 3122C

t the pC/G si

amplifiers a

nsitivities of

use low nois

nput of the c

ENANCE A

The only m

les and con

ontaminants

t the factory

g the syste

g the instru

ary.

Do not retu
without first
ed Material

CELEROM

ounting sur

odel 3122C,

flat surface

ting surface
the flatter th
he high freq

.001 TIR will
requency m
vided mounti
20 to 25 lb-i
to the .50 in

Model 3122
tic charge a

tput signal fr
ow-impedan

en be fed dir

nt(s).

ry use, the

bration type

electrostatic
the Dytran
e Model 601
th in feet).

nded charge

ries 4751B.

o Low Impe

ion. They ar

and the LIV

nal to mV/G

e available i

50, 20, 10 a

cable to co
arge amplifi

D REPAIR

intenance r

ections free
Should a pr

or assistanc

and for inst

ents should

n the instru

alling the fa

uthorization

TER

ace of at lea

it is necessa

to accept th

f the instru
mounting
ency respon

give excelle

asurements.
ng stud and
nches of torq

h hex.

, it is neces
plifier to con

m the

e voltage-m

ctly to the d

122C may b

harge ampli

types. Use a

odel 6013A
Axx, 10-32

amplifier for

hese instru

ance Voltag

mounted in

power unit

. These mini

four models

d 1 mV/pC.
nect the 31
r.

quired is to
from moistur

blem arise,

in trouble-

uctions in

this become

ent back to

tory to obtai

(RMA) numb

t .50

y to

0.44
ent.

e will
t

ue,

ary
vert

de
ta

ier

low­x,

o

ield

ents

line

and

ture

with

2C

eep

and

he

a
r.

REV F 07/11/1

2