CETDQ801B Charge Amplifier for Weigh In Motion Systems - 8/12 Channel, ±5Vp Output, DC 12V Operation
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
1 week
Brand:
Enviko
Product Description
Product Overview
The CETDQ801B multi-channel charge amplifier converts input charge signals into proportional voltage outputs, designed specifically for piezoelectric sensor integration in weigh-in-motion systems. This precision instrument supports 8 or 12 input channels and operates at DC 12V power with DB15 output interface.
Applications include water conservancy, power generation, mining, transportation, construction, seismology, aerospace, and defense sectors for measuring acceleration, pressure, and force parameters.
Key Features
- High-precision circuit design with low-noise, low-drift imported components
- Eliminates signal attenuation from long input cables up to 1000 meters
- ±5Vp output at 50mA maximum current
- 8 or 12 channel configuration options
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Channels | 8 or 12 channels |
| Maximum Input Charge | ±106pC |
| Sensitivity Range | 0.1-1000mV/pC |
| Output Voltage | ±5Vp maximum |
| Output Current | ±100mA maximum |
| Power Supply | DC 12V |
| Output Interface | DB15 connector |
| Frequency Response | High-pass: 0.3-100Hz, Low-pass: 1-100kHz |
| Noise Level | <5µV (referred to input at maximum gain) |
| Warm-Up Time | Approximately 30 minutes |
Working Principle
The CETDQ801B employs a sophisticated multi-stage signal processing architecture:
Signal Processing Stages
- Charge Conversion Stage: Transforms piezoelectric sensor charge signals into proportional voltage outputs with high input impedance
- Adjustment Stage: Normalizes voltage output for sensors with varying sensitivities
- Low-Pass Filter: Second-order Butterworth filter eliminates high-frequency interference
- High-Pass Filter: First-order passive filter suppresses low-frequency noise
- Final Power Amplifier: Provides gain and output short-circuit protection
The charge conversion stage features four feedback capacitor settings (101pF, 102pF, 103pF, 104pF) providing output ranges of 10mV/pC, 1mV/pC, 0.1mV/pC, and 0.01mV/pC respectively.
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Company
Chengdu Enviko Technology Co.,Ltd
Location
Room 1001, Unit 2, Building 2, No. 158 Tianfu 4th Street
Contact Person
Max Chung