Dytran 3049E Series, 3049E2, 3049E1, 3049E3 Operating Manual

Dynamic Transducers and Systems

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

OG3049E.DOC
Rev B 17 APR 06

OPERATING GUIDE

MINIATURE 3049E SERIES IEPE ACCELEROMETERS

10 mV/g AND 100 mV/g

HERMETICALLY SEALED AND CASE ISOLATED

NOTE:

Series 3049E Series features hermetically sealed construction
and electrically isolated case for "off-ground" performance.
Hermeticity is obtained by all-welded construction and glass-to­metal sealed connector. Case material is titanium. Signal
ground return is electrically isolated from the mounting surface.

This guide contains:

1) Operating Instructions, Series 3049E Series.

2) Outline/installation drawing, Series 3049E Series

3) Specifications, Series 3049E Series

4) Paper, "Low Impedance Voltage Mode (LIVM) Theory and
Operation”

NOTE: IEPE is an acronym for Integrated Electronics Piezoelectric types of low impedance voltage mode sensors
with built-in amplifiers operating from constant current sources over two wires. IEPE instruments are compatible

with most other manufacturers’ comparable systems.

SPECIFICATIONS

MODEL SERIES 3049E Series IEPE ACCELEROMETERS
SPECIFICATION VALUE UNITS
PHYSICAL

WEIGHT 3049E, 3049E2 3.3 grams
3049E1, 304E3 3.1 grams
SIZE, HEX x HEIGHT (all models) .39 x .54 inches
MOUNTING PROVISION 3049E, 3049E2 10-32 integral stud x .15 inch
3049E1, 3049E3 adhesive
CONNECTOR, TOP MOUNTED 10-32 coaxial
MATERIAL, BASE, CAP & CONNECTOR titanium alloy
SEISMIC ELEMENT TYPE ceramic, annular shear

PERFORMANCE 3049E 3049E1 3049E2 3049E3

SENSITIVITY, ± 5% [1] 10 10 100 100 mV/g
RANGE F.S. FOR ± 5 VOLTS OUTPUT ± 500 ±500 ±50 ±50 g
FREQUENCY RANGE, ± 5% (all models) 1 to 10,000 Hz
RESONANT FREQUENCY, NOM. (all models) 35 kHz
EQUIVALENT ELECTRICAL NOISE .002 .002 .001 .001 grms
BASE STRAIN SENSITIVITY .004 .004 .004 .004 eq g/µe
LINEARITY [2] (all models) ±2 % F.S.
TRANSVERSE SENSITIVITY, MAX. (all models) 5 %

ENVIRONMENTAL 3049E 3049E1 3049E2 3049E3

MAXIMUM VIBRATION 600 600 200 200 g pk
MAXIMUM SHOCK (all models) 5000 g pk
TEMPERATURE RANGE min -60 -60 -60 -60 °F
max 250 250 212 212 °F
SEAL, HERMETIC (all models) glass-to-metal/welded
COEFFICIENT OF THERMAL SENSITIVITY .06 %°F

ELECTRICAL

SUPPLY CURRENT [3] 2 to 20 mA
COMPLIANCE VOLTAGE RANGE +18 to +30 Volts
OUTPUT IMPEDANCE, TYP. 100 Ω
BIAS VOLTAGE. +11 to +13 Vdc
DISCHARGE TIME CONSTANT, MIN. 0.5 Sec
OUTPUT SIGNAL POLARITY positive
FOR ACCELERATION TOWARD TOP
ELECTRICAL ISOLATION, MIN 10 MΩ
CASE GROUND TO MOUNTING SURFACE

Accessories supplied: none

[1] Measured at 100 Hz, 1 grms per ISA RP 37.2.
[2] Measured using zero-based best straight line method, % of F.S. or any lesser range.
[3] Do not apply power to this device without current limiting, 20 mA MAX. To do so will destroy the integral IC

amplifier.

2