參數(shù)資料
型號： 2120B
廠商： Vishay Intertechnology,Inc.
英文描述： Strain Gage Signal Conditioner/Amplifier
中文描述： 應變計信號調理/放大器
文件頁數(shù)： 1/1頁
文件大小： 95K
代理商： 2120B
2120B
Vishay Micro-Measurements
Document Number: 11251
Revision 21-Nov-03
www.vishaymg.com
1
micro-measurements@vishay.com
Strain Gage Signal Conditioner/Amplifier
FEATURES
Accepts full, half or quarter bridges; all bridge-
completion gages built in, including 120/1000 and 350
dummies
Fully adjustable and
regulated
bridge excitation on each
channel up to 12Vdc by front panel control
Continuosly variable amplifier gain up to 2100 by front-
panel control
Separate bridge-power switch
Output 10Vdc at 100mA, short-circuit; proof and current
limiting standard
LED null indicators provided on each channel to
indicate amplifier and bridge-balance condition
High stability with temperature and time
Frequency response up to 50kHz
A two-channel plug-in amplifier module that includes bridge
completion, bridge balance, amplifier balance, bridge-exci-
tation regulator and shunt calibration.
SPECIFICATIONS
These specifications apply for each of two independent
channels per module.
Inputs:
Quarter (120
/1000
and 350
), half and full bridge
(50-1000
). Quarter-bridge dummy gages provided.
Bridge Excitation:
0.5 to 12 Vdc (adjustable for each channel)
with 120
full-bridge load.
Short-circuit current:
<40 mA.
Ripple, noise, and 10% line change:
±
2 mV max.
Load regulation:
±
0.2% no-load to 120
load (10% line
change).
Bridge Balance:
±
2000
μ
ε
(quarter, half, or 350
full
bridge), range can be changed by internal jumper to
±
4000
μ
ε
or
±
6000
μ
ε
.
Calibration:
Two-position (center off) toggle switch.
Standard factory-installed resistors (
±
0.1%) simulate
±
1000
μ
ε
at GF=2.
Amp Gain:
1 to 2100 continuously adjustable
±
1%.
Bandpass:
DC to 5 kHz (min): –0.5 dB (–5%).
DC to 15 kHz: –3 dB.
Can be extended by internal jumper to:
DC to 17 kHz: –0.5 dB; DC to 50 kHz: –3 dB.
Amp Input:
Temperature Coefficient of Zero:
±
1
μ
V/
°
C RTI (referred to input),
±
210
μ
V/
°
C RTO
(referred to output); –10
°
to +60
°
C (after 30 minute
warm-up).
Noise RTI:
(350
source impedance)
1
μ
V p-p at 0.1 Hz to 10 Hz; 2
μ
V p-p at 0.1 Hz to 100 Hz;
2
μ
V at 0.1 Hz to 50 kHz.
Noise RTO:
50
μ
V p-p at 0.1 Hz to 10 Hz; 80
μ
V p-p at 0.1 Hz to
100 Hz; 100
μ
V at 0.1 Hz to 15 kHz; 200
μ
V at
0.1 Hz to 50 kHz.
Input Impedance:
>100M
(balance limit resistor
disconnected).
Common-Mode Rejection:
(dc to 60 Hz).
Gain Multiplier
X2
X20
X200
Source Current:
±
10 nA typical;
±
40 nA max.
CMR (dB)
67
87
100
Output:
±
10V (min) at
±
100 mA.
Current Limit:
140 mA.
Optional Feature:
May be ordered with, or be field upgraded for, remote-
operation relays for control of shunt calibration and bridge
excitation (off). Requires remote-operation capability in the
Model 2150 or 2160. Contact Vishay Micro-Measurements
for details.
Size:
5.25 H x 2.94 W x 10.97 D in (133 x 75 x 279 mm).
Weight:
2.2 lb (1.0 kg).
All Specifications are nominal or typical at + 23
°
C unless
noted.
2120B REAR VIEW
DESCRIPTION
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