Product Description
Manufacturer: BACHMANN
Model/Part Number: DMS202
Description: Strain Gauge Input Module
Key Features:
-
Bridge Supply:
- Carrier frequency: 5 kHz ±2 %
- Amplitude: 4 Veff ±2 %
- Optional synchronization of carrier frequency
- Synchronization range: 5 kHz ±2 %
-
DMS Amplifier Input:
| Parameter | Specification |
|---|---|
| Input resistance | > 5 MΩ |
| Desired signal bandwidth | 1 kHz |
| Resolution | 12 bit |
| Max input common mode voltage | 10 V (no overdrive) |
| CMRR (0 to 5 kHz) | > 80 dB |
| Wire break monitoring | Yes, with error message |
-
Galvanic Isolation: 500 V from system
-
External Voltage Monitoring: Power-fail signal
-
Conversion Time:
- 12.5 µs for one channel
- 25 µs for two-channel operation
-
Measurement Range Selection:
- 2.0 / 4.0 / 8.0 / 16.0 mV or Auto Range
- Measurement range switchover: Automatic or via software
-
Measurement Outputs:
- Output voltage: 0 .. 10 V
- Internal resistance: < 2 Ω
- Load resistor: > 2.5 kΩ
-
Special Functions:
- Peak value capture
- Electronic capacity comparison
- Carrier frequency synchronization
-
External Power Supply:
- Voltage range: 18 .. 34 V DC
- Current consumption at 24 V DC: 100 mA
- Reverse polarity protection: Yes
- Galvanic isolation: 500 V
Ambient Conditions:
| Condition | Specification |
|---|---|
| Operating temperature | 0 .. +60 °C |
| Relative humidity (operation) | 5 .. 95 % (without condensation) |
| Storage temperature | -40 .. +85 °C |
| Relative humidity (storage) | 5 .. 95 % (without condensation) |
Execution Variant: DMS202 – Strain gauge measurement, 2x full bridge; ±2/4/8/16 mV; 25 µs sampling time; 5 kHz carrier frequency, 12-bit resolution; isolated.