Constant-Voltage
Excitation:
Range:
0.50 to 15.0 Vdc at 85 mA max.
Noise:
+ 100 microvolts + 0.002% p-p dc to 20 kHz.
Line Regulation:
+ 200 microvolts + 0.01 % max for line voltage change
of 10% from nominal.
Load Regulation:
+ 200 microvolts + 0.01% max for load variation of 10%
to 90% of full load.
Stability:
+ 0.01%/deg C or 100 microvolts/deg C, whichever is greater.
Remote Sense:
Error <0.0005%/ohms of lead resistance.
Monitoring:
Front-panel monitoring jacks.
Isolation:
Isolated from power ground and output common; floats with guard.
Constant-Current Excitation:
Range:
0.50 to 15.0 mA dc or 1.00 to 30.0 mA dc. Compliance voltage 0.50 to
16.0V.
Noise:
(1 microamps + 10 microvolts) p-p; dc to 20 kHz.
Line Regulation:
+ 1 microamps + 0.01% max for line voltage change of + 10% from nominal.
Load Regulation:
+ 1 microamps + 0.01% max for 100% load change.
Stability:
+ 0.01%/deg C or 1 microamp/deg C, whichever is greater.
Monitoring:
Front-panel monitoring jacks; 10 mV/mA.
Isolation:
Isolated from power ground and output common; floats with Guard.
Balance:
Method:
Electronically injected automatic balance.
Range:
+ 15 000 microstrain (7.5 mV/V) RTI (X2 with internal
jumper).
Resolution:
0.50/microstrain RTI (X2 with internal jumper).
Balance Time:
4 seconds typical; 8 seconds max.
Accuracy:
+ 2 mV RTO; + 2 microstrain RTI.
Balance Trim:
+ 375 microstrain (188 microvolts/V) RTI.
Storage:
Digital with battery backup. Battery life 3-5 years.
Activation:
Activated by front-panel switch or by optically isolated remote
switch or low TTL level.
Calibration:
Four internal shunt calibration resistors, + 0.1%
tolerance:
174.8K 1000 microstrain (0.50
mV/V) 350 ohms bridge;
874.8K 200 microstrain (0.10
mV/V) 350 ohms bridge;
59.94K 1000 microstrain (0.50
mV/V) 120 ohms bridge.
Activated by front-panel switch, or by optically isolated remote
contact closure or low TTL level.
Internal selector switches for selection of two-point unipolar,
bipolar, or two-point double shunt calibration circuits.
Calibration resistors plug into fixed terminals (no soldering). |
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Vishay 2210
Signal Conditioning Amplifier System
- Isolated constant-voltage/constant-current excitation
- Guarded input structure with + 350V
common-mode capability, + 10V and tape outputs
- Automatic wide-range bridge balance
- Four-pole Bessel low-pass filter.
- Constant-voltage or constant-current excitation,
calibration configuration, and other optional operating modes
Specifications
All references to microstrain assume a gage factor of 2.00.
All specifications nominal or typical at +23 deg C unless noted.
Input:
Input Impedance:
dc-coupled: 22 megohms shunted by 250 pF.
ac-coupled: 1.1 microfarad in series with 20 kilohms; low frequency cutoff
(3 dB) 8 Hz nom.
Source Current:
+ 10 nA typical; + 20 nA maximum.
Configuration:
2- to 10-wire plus guard shield accepts quarter-, half-, or full-bridge
strain gage or transducer inputs. Internal half-bridge, dummy 350 ohm and
dummy 120 ohm completion gages, remote sense and four-wire calibration
capability provided. 1000 ohms completion capability also provided.
Accepts inputs from ground-referenced or isolated devices.
Differential Input:
Maximum differential input voltage of + 50 Vdc or peak ac.
Common-Mode Input:
Maximum common-mode input voltage of + 350 Vdc or peak ac.
Guard Impedance:
Greater than 250 kilohms to output common; greater than 1000 megohms to
power and rack ground.
Amplifier:
Gain:
1 to 3300; continuously variable; direct reading. Gain steps X1, X10,
X100, X300; with 10-turn counting knob, X1 to X11. Accuracy + 0.5%.
Linearity:
+ 0.01% of full scale at dc.
Frequency Response:
dc to 100 kHz: 3 + 0.2 dB at all gain settings and full output. dc
to 50 kHz: 0.5 dB max at all gain settings and full output.
Gain Step vs Frequency Response (3 dB):
| X300 |
100 kHz |
| X100 |
120 kHz |
| X10 |
135 kHz |
| X1 |
240 kHz |
Slew Rate:
6.3 V/microsec min at all gain settings.
- Noise:
(350 ohm source impedance, dc-coupled)
- Referred-to-input (RTI):
1 microvolt 0.1 Hz to 10 Hz p-p; 2 microvolts 0.1 Hz to 100 Hz p-p
3 microvolts 0.1 Hz to 100 kHz rms
Referred-to-Output (RTO):
Output related noise is a function of the setting of the gain multiplier
potentiometer. Refer to the graph below for noise referred-to-output.
Zero Stability:
+ 2 microvolts RTI, + 200 microvolts RTO at constant temp.
Temperature Coefficient of Zero:
+ l microvolt/deg C RTI, + 100 microvolt/deg C RTO; -10 deg
to 60 deg C.
Common-Mode Rejection:
| Gain |
CMR (dB) |
| X1 |
82 |
| X10 |
102 |
| X100 |
122 |
| X300 |
135 |
Common-Mode Voltage:
+ 350 Vdc or peak ac, max operating.
Standard Output:
+ 10V at 10 mA max;
Tape Output:
1.0 Vrms at 10 mA max; or
Output ac-coupled:
+ 10V at 10 mA max (7 Hz, 3 dB).
Output Monitor:
+ 10V standard monitored via front-panel jacks.
Output Isolation:
>1000 megohms from power and rack ground.
Output Protection:
Protected against continuous short.
Capacitive Loading:
Up to 0.15 microfarad.
Low-Pass Filter:
Four-pole Bessel low-pass filter with selectable 3 dB bandwidths of 1 Hz,
10 Hz, 100 Hz, 1 kHz and 10 kHz. |
