2440-200 [ETC]

TRIAXIAL ANALOG ACCELEROMETER MODULE; 三轴模拟加速计模块


型号：	2440-200
厂家：	ETC
描述：	TRIAXIAL ANALOG ACCELEROMETER MODULE 三轴模拟加速计模块
文件：	总3页 (文件大小：470K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SILICON DESIGNS, INC

Model 2440

TRIAXIAL ANALOG ACCELEROMETER MODULE

! 3 Axis Acceleration Sensing

! Capacitive Micromachined

! Nitrogen Damped

! Low Noise

! 5V Single Ended Outputs

! Fully Calibrated

! Low Power Consumption

! -55 to +125EC Operation

! 11 to 16 VDC Power

! 6 Wire Connection

! Serialized for Traceability

! Responds to DC & AC Acceleration

! Outputs Referenced to External Ground

! Non Standard g Ranges Available

! Rugged Black Anodized Aluminum Module

ORDERING INFORMATION

Full Scale

Model

Acceleration

Number

2 g

5 g

2440-002

2440-005

2440-010

2440-025

2440-050

2440-100

2440-200

DESCRIPTION

The Model 2440 triaxial accelerometer is a higher performance and wider

temperature range version of the model 2430. It combines three orthogonally

mounted Model 1221L accelerometers, in a rugged case for measuring

accelerations in commercial and industrial environments. This low noise module

istailoredforzerotomedium frequencyinstrumentationapplications. Theanodized

aluminum case is epoxy sealed and is easily mounted via two #8 (or M4) screws.

The design includes an instrumentation amplifier on each axis providing high drive

± 10 g

± 25 g

± 50 g

±100 g

±200 g

capability and low output impedance. On-board voltage regulation and an internal voltage reference eliminate the

need for precision power supplies. No power supplycurrent flows through the OUTPUT REF wire; this high impedance

input is used only as a reference for the acceleration outputs which reduces cross talk among the three channels by

rejecting noise from voltage differences between the user's data acquisition equipment and power supply grounds.

The 2440 is relatively insensitive to temperature changes and gradients. An initial calibration sheet (2440-CAL) is

included and periodic calibration checking is available.

OPERATION

The Model 2440 produces three analog voltage outputs

which vary with acceleration. The Z axis is perpendicular

to the bottom of the package, with positive acceleration

defined as a force pushing on the bottom of the package.

The X and Y axis directions are marked on the cover with

positive acceleration defined as acceleration in the

direction of the axis arrow. The outputs are single ended

and vary with respect to the voltage at the OUTPUT REF

input which should be approximately centered between

the +V_Sand -V_Ssupply voltages. The output scale factor

is independent of the supply voltages from 12 to 16

volts. At zero acceleration, the output voltage isnominally

zero volts; at full scale acceleration the output voltage

is 5 volts respectively.

APPLICATIONS

VIBRATION MONITORING

VIBRATION ANALYSIS

CRASH TESTING

ROBOTICS

MACHINE CONTROL

INSTRUMENTATION

MODAL ANALYSIS

ROTATING MACHINERY MONITOR

Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446

web site: www.silicondesigns.com [page 1] Sep 07

Model 2440 Triaxial Analog Accelerometer Module

SIGNAL DESCRIPTIONS

+VS (Power): Reddish brown wire. Apply +11 to +16 Volts

DC with respect to OUTPUT REF.

-VS

(Power): Black wire. Apply -11 to -16 Volts DC with

respect to OUTPUT REF.

OUTPUT REF (Input): White wire. The X, Y & Z outputs

are referenced to this potential. This input is usually

tied to a potential halfway between the +V

and -V

voltages. This input may also be used to offset the

output but the voltage difference between this input

or -VS) must be greater

and either supply voltage (+V

than or equal to 11V.

X, Y & Z (Outputs): Green, Light Brown & Light Blue wires

respectively. These output voltages are proportional

to acceleration; they increase with positive

accelerationanddecreasewithnegativeacceleration.

At zero acceleration the output is nominally equal to

zero volts with respect to OUTPUT REF.

PERFORMANCE - By Model: V_S= 12 to 16VDC, T_C=25EC.

MODEL NUMBER

UNITS

2440-002 2440-005 2440-010 2440-025 2440-050 2440-100 2440-200

Input Range

Frequency Response (Nominal, 3 dB) ¹

0 - 400

2500

100

200

0 - 600 0 - 1000 0 - 1500 0 - 2000 0 - 2500 0 - 2500

Sensitivity

1000

500

200

100

mV/g

µg/(root Hz)

Output Noise (RMS, typical)

Max. Mechanical Shock (0.1 ms)

150

300

2000

Note 1: 250Hz ±100Hz, -3dB bandwidth, optionally available.

PERFORMANCE - All Models: Unless otherwise specified V_S= 12 to 16VDC, T_C=25EC.

PARAMETER

Cross Axis Sensitivity

MIN

TYP

MAX

UNITS

-002

4.0

1.5

200

100

Bias Calibration Error

% of span

-005 thru -200

-002

Bias Temperature Shift

(T_C= -40 to +80EC)

100

(ppm of span)/EC

-005 thru -200

Scale Factor Calibration Error

Scale Factor Temperature Shift

(T_C= -40 to +80EC)

-002 thru -010

-025 thru -200

-002 thru -050

-100

-250

-150

+150

ppm/EC

0.15

0.25

0.40

>65

0.5

1.0

1.5

Non-Linearity

(-90 to +90% of Full Scale)

% of span

2, 4

-200

Power Supply Rejection Ratio

Output Impedance

Ohm

Operating Voltage (V_S)

11 ³

Operating Current (X, Y & Z outputs open)

Mass (not including cable)

grams

grams/meter

Cable Mass

Note 2: 100g versions and above are tested from -65g to +65g.

Note 4: Tighter tolerances available upon request.

Note 3. Operation with V_Sbelow ±12V may result in some performance degradation.

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446

web site: www.silicondesigns.com

[page 2]

Sep 07

Model 2440 Triaxial Analog Accelerometer Module

CABLE SPECIFICATIONS & LENGTH CONSIDERATIONS

The cable consists of six 28 AWG (7x36) tin plated copper wires with FEP insulation. The cable jacket is an FEP tape wrap

with a nominal outer diameter of 0.125”. Cable lengths of up to 15 meters (50 feet) can be added to the model 2440's

standard 1 meter cable without the need to test for output instability. For lengths longer than 15 meters we recommend

you check each individual installation for oscillation by tapping the accelerometer and watching the differential output for

oscillation in the 20kHz to 50kHz region. If no oscillation is present then the cable length being used is OK. From the

standpoint of output current drive and slew rate limitations, the model 2440 is capable of driving over 600 meters (2000

feet) of its cable type but at some length between 15 and 600 meters, each device will likely begin to exhibit oscillation.

SENSOR LOCATIONS

SINGLE SUPPLY OPERATION

The model 2440 can be powered using a single +20 to +32V supply but two additional resistors are needed and you must

make the following connections. Connect the -V_Swire to your power supply’s ground. Connect the +V_Swire to the positive

output of your power supply V_P. Connect one resistor (R_UPPER) between your supply voltage and the OUTPUT REF wire.

Connect another resistor (R_LOWER) between ground and the OUTPUT REF wire. The two resistors form a resistive divider

which creates a +5V source for OUTPUT REF. This +5V reference needs to have a source impedance of about 1000Ω so

use the following equations to calculate values for the resistors depending upon your supply voltage V_P.

1000

⋅

V_P

−





R_LOWER

R_UPPER

R_LOWER









V_P

−

For this mode of operation, the voltage swing of the three outputs is limited to 8V (+1 to +9V) so the g-range over which

each model will operate is reduced according to the table below.

MODEL NUMBER

2440x-002 2440x-005 2440x-010 2440x-025 2440x-050 2440x-100 2440x-200

UNITS

Input Range (single supply mode)

Sensitivity (single supply mode)

Output Range (single supply mode)

1.6

200

160

2500

1000

500

100

mV/g

Volts

8V (+1 to +9V)

A custom version of the model 2440 that can operate with a single supply as low as 12V can be special ordered but a

custom order charge may apply for quantities less than 10.

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Silicon Designs, Inc. ! 1445-NW Mall Street, Issaquah, WA 98027-5344 ! Phone: 425-391-8329 ! Fax: 425-391-0446

web site: www.silicondesigns.com

[page 3]

Sep 07

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