Brands
Vishay Measurements Group
Interactive Guide
Instruments
2200 System
Model 2210A
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Signal Conditioning Amplifier |
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Description
Among the features of the 2210A Amplifier are isolated constant-voltage/constant-current excitation, guarded input structure with + 350V common-mode capability, + 10V and tape outputs, automatic wide-range bridge balance and four-pole Bessel low-pass filter. Operating controls of the 2210A Amplifier are conveniently arranged and clearly marked to minimize the possibility of operator error. Constant-voltage or constant-current excitation, calibration configuration, and other optional operating modes are selected by easily accessible internal switches or jumpers.
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 inputvoltage 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):
Slew Rate: 6.3 V/microsec min at all gain settings.
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:
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. 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). Size: 7 H x 1.71 W x 17.88 D in (178 x 43 x 454 mm). Weight: 3.7 lb (1.67 kg). 
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