BDK3, BDK10, BDK100
Accelerometers of high overload resistance with integrated electronics for dynamic measurement of vibration and acceleration in the frequency range 1Hz to several kHz
Features
- very high overload resistance
- light weight
- linear frequency response with little or no resonant peak at upper cut-off frequency
- low non-linearity
- small lower cut-off frequency
- high signal-to-noise ratio
- hermetically sealed
- low transverse sensitivity
- high long-term stability
- integrated sensor electronics
- low output impedance
- optional galvanic isolation of sensor circuit from measuring location
- multiple housing options
- long connection lines possible
Description
The dynamic accelerometers BDK3, BDK10, and BDK100 are capacitive spring-mass accelerometers with integrated sensor electronics. Resonant peaks are minimized by dynamic gas damping in the primary transformer.
The sensor electronics require only minimal power and are in conjunction with the capacitive primary transformer characterized by low error and high long-term stability.
Application
The accelerometers BDK3, BDK10, and BDK100 are used for applications requiring high overload resistance, high long-term stability, small lower cut-off frequency, light weight and low power consumption. Typical applications include:
- measurements on vehicles, machinery, buildings and plants for process control and error diagnosis
- seismic measurements
- vibration measurements
- safety engineering
- dynamic measurement of position and velocity
Specifications
| Type | BDK3 | BDK10 | BDK100 |
|---|---|---|---|
| Measuring range | ±3g (ca.±30m/s2) | ±10g (ca.±100m/s2) | ±100g (ca.±1000m/s2) |
| Resolution | <10-3g | <5·10-3g | <5·10-2g |
| Frequency range | 1....300Hz | 1....800Hz | 1....1500Hz |
| Sensitivity at Ub = 5 Volt | approx. 150mV/g | approx. 60mV/g | approx. 15mV/g |
| Type | BDK3 |
|---|---|
| Measuring range | ±3g (ca.±30m/s2) |
| Resolution | <10-3g |
| Frequency range | 1....300Hz |
| Sensitivity at Ub = 5 Volt | approx. 150mV/g |
| Type | BDK10 |
|---|---|
| Measuring range | ±10g (ca.±100m/s2) |
| Resolution | <5·10-3g |
| Frequency range | 1....800Hz |
| Sensitivity at Ub = 5 Volt | approx. 60mV/g |
| Type | BDK100 |
|---|---|
| Measuring range | ±100g (ca.±1000m/s2) |
| Resolution | <5·10-2g |
| Frequency range | 1....1500Hz |
| Sensitivity at Ub = 5 Volt | approx. 15mV/g |
| Shared specifications | |
|---|---|
| Temperature drift of sensitivity | approx. <+0.06%/K |
| Zero offset | 2.5±0.1 Volt - generally: 0.5Ub±4% |
| Output impedance | approx. 100 Ohm |
| Linearity deviation | <1% |
| Transverse sensitivity | <1% |
| Mechanical overload resistance in direction of measurement | approx.10 000g (appr.100 000m/s2) ! |
| Nominal supply voltage (regulated externally) | UbN = 5 Volt |
| Permissible supply voltage range | Ubz = 2V ... 16V |
| Current drawn at Ub = 5V | approx. 2mA |
| Degree of protection | IP65 |
| Operating temperature | -40°C ... +85°C (125°C optional) |
| Storage temperature | -45°C ... +90°C (125°C optional) |
| Weight (stainless steel housing with screw thread and approx. 18cm wires) | approx. 19.5g |
| Weight in small housing without cable | approx. 7g |
| Electrical connection | standard: • 3 highly flexible, color-coded wires ø ~1mm, length approx. 18 cm optional: • for sensors in stainless steel housing: 0.5m strong, flexible, shielded cable, 2 wires + shield, ø2,1mm or • 3 flexible, color-coded wires with Teflon insulation for extended temperature range • special lengths on request |
- • On request: special design for very low power consumption of approx. 30µA
Dimensions (in mm) and Connections
Accessory MAGZ1 — lever to detach the magnetic housing
Frequency response
