MODEL 2121F CHARGE AMPLIFIER & MODEL 4121 POWER SUPPLY
BOUCHE LABS MODEL 2121F CHARGE AMPLIFIER & MODEL 4121 POWER SUPPLY
BOUCHE LABS Model 2121F Charge Amplifier is low-priced and is used with piezoelectric transducers. The small overall dimensions and DC-power supply or battery operation is appropriate for use in the test laboratory or in the field.
An easy two step process is used for operation:
- First, dial the transducer sensitivity (1 to 1100 pC/g)
- Second, select the gain switch position (1 to 10,000 mV/g.) Then the charge amplifier output is in mV/g.
Another attribute is the front panel switch for selecting a single-pole low-pass filter for suppressing resonances during shock tests.
The 2121F Charge Amplifier is supplied with +15 Vdc and -15 Vdc by the Bouche Labs Model 4121 AC-operated power supply. The power supply is capable of powering up to twenty Model 2120 series Bouche Labs charge amplifiers.
Specifications
| Measurement | Unit | Rating | |
|---|---|---|---|
| INPUT | 12 | ||
| MODE | Single-ended | ||
| GROUND (Insulated from case) | ohms | 10M | |
| TRANSFER | +/-2 | ||
| SYSTEM SENSITIVITY | The gain is adjustable to provide output for transducer sensitivities from 1 to 1100 pC/g | ||
| Transducer sensitivity dial | pC/g | 100-1100, 10-110, 1-11 | |
| Amplifier gain | mV/g | 100 to 10000, 10 to 1000, 1 to 100 | |
| ACCURACY (on any range) | % | +/-0.3 | |
| GAIN STABILITY maximum per 1000 pF change in source capacitance | % | 0.1 | |
| FREQUENCY RESPONSE, ref: 100 Hz | |||
| Filter Out: 10 Hz to 10000 Hz | % | +/-0.5 | |
| ...at 5 Hz: | % | +0.2/-1.0 | |
| Filter in: 5 Hz to 15 kHz | % | +/-5 | |
| ...at 22 kHz, minimum | dB | -3 | |
| ...at 28 kHz, minimum | dB | -10 | |
| Terminal slope | dB/Oct | -18 | |
| AMPLITUDE LINEARITY (ref:best straight line) | % | +/-0.2 | |
| WARM-UP TIME | min | 1 | |
| RESIDUAL NOISE (referred to input) | pC | 0.3 (rms) | |
| TRANSIENT DISTORTION | |||
| maximum time delay optional low-pass filter, any frequency 5 Hz to 15 kHz | us | 4 | |
| TRANSIENT DISTORTION | |||
| maximum time delay of optional low-pass filter, any frequency 5 Hz to 15 kHz | us | 4 | |
| POWER | 1/4-28, 10-32, etc. | ||
| LINE VOLTAGE | Vac | 105 to 125 | |
| CIRCUIT GROUND, Insulated from case, minimum | ohm | 10M |
| Characteristic | Unit | Rating | |
|---|---|---|---|
| POWER REQUIREMENTS | |||
| SUPPLY VOLTAGE | Vdc | +15/-15, typical limits +14/-14 to +18/-18 | |
| SUPPLY CURRENT | mA | 7.5, typical, 9.5 maximum, at +15/-15 Vdc | |
| PHYSICAL | 3 | ||
| OVERALL DIMENSIONS | in/cm | 1.75 x 4.5 x 6.25/4.4 x 11.4 x 15.9 | |
| FINISH | Anodized Aluminum | ||
| WEIGHT | lb | 2 | |
| CONNECTORS | |||
| Input | 10-32 Microdot S-50 or equivalent | ||
| Output | BNC, UG-1094/U or equivalent | ||
| ENVIRONMENTAL | 95 | ||
| OPERATING TEMPERATURE | oF/oC | +40 to +125/+5 to +52 | |
| STORAGE TEMPERATURE | oF/oC | -65 to +185/-54 to +85 |
Accessories Supplied
Instruction manual, and mating connector for supply voltages.
Calibration
Bouche Labs Charge Amplifier Calibration Service No. 11, or Accelerometer Calibration Service No. 7 with Bouche Labs or customer accelerometer calibrated as a system with the Model 2121F Charge Amplifier.
BOUCHE LABS reserves the right to change these and any other specifications without notice.
