GRAS 12AL 1 通道 CCP 电源模块，带 A 计权滤波器

Connection: CCP
Channel(s): 1

GRAS 12AL CCP（恒流电源）是一款低噪单通道电源，适用于 CCP 传感器和前置放大器。

Technology

典型应用

  • Power supply for CCP transducers and preamplifiers

  • General-purposes measurements

  • Precision measurements

  • Wide-band measurements

  • Switchable A-weighting network

  • Low noise

  • Battery operated

设计

The 12AL will supply a transducer with a constant current of 4 mA. It has a wide operating frequency range from about 1 Hz (depending on load impedance) to well over 200 kHz. It also has an A-weighting filter that can be switched in or out.

The 12AL can be powered by either two internal AA alkaline batteries or an external 3–6 VDC power source. Both the AA batteries and the AB0005 6 VDC power supply are included.

LEDs are used to indicate battery condition; green for power OK and red for battery low. Another red LED is used to indicate a cable break, short circuit, and overload.

The 12AL has zero gain since the output signal from the transducer is wired directly via 22 μF to the output connector. Zero gain is also preserved at 1 kHz when the A-weighting network has been switched in.

The size and weight of the 12AL make it a compact and handy power supply for CCP transducers both in the laboratory and in the field.

保修

所有GRAS产品均采用优质材料制造，确保产品具有卓越的长期稳定性和耐久性。12AL 提供 2 年保修，但因使用不当导致的损坏不在保修范围内。

服务与维修

所有维修均在位于丹麦的 GRAS 国际支持中心进行。我们的支持中心配备了最新的测试设备，并拥有技术精湛的专业工程师。根据要求，我们会按照固定的维修类别进行成本估算。在质保期内的产品送修时，如非人为操作不当或违反保修条款导致的损坏，将享受免费维修服务。

Specifications

CONDITIONING
.
Frequency response (±3.0 dB) (with 10 kΩ load)
Hz
0.7 to 200 k
Frequency response (±3.0 dB) (with 100 kΩ load)
Hz
0.07 to 200 k
Output channel(s)
1
Output impedance, with A-weighting
Ω
100 in serial with 22µF
Output impedance, without A-weighting
Ω
As source in serial with 22µF
Direct coupling input to output
No
Inherent noise, A-filter "on" and with dummy microphone (20 Hz to 20 kHz),
µVrms
15
Inherent noise, A-filter "off" and with dummy microphone (20 Hz to 20 kHz),
µVrms
4
A-weighting filter according to
IEC 61651 Type 0
Linear mode
Yes
Type
Constant Current Power (CCP)
Input channel, CCP
1
Input channel(s), traditional power supply
1
CCP preamplifier supply @ +28 V
mA
4
Overload indication
Yes
PC controlable
No
External filter option
No
Power amplifier overload detection
No
POWER SUPPLY
.
Power supply, battery
2 x LR6 (AA)
Power supply, external
Vdc
3 to 6
Power consumption
mA
50 to 120
Battery life
h
24
Battery low indication
Yes
Temperature range, operation
°C / °F
-10 to +50 / 14 to 122
Weight
g / oz
110.00 / 3.88
Weight with batteries
g / oz
160 / 5,6

Ordering info

标配

GRAS AB0005

Mains/line adapter. AB0005 is a 100-240 VAC to 6 VDC power supply that includes exchangeable EU, US, UK, and Type I plugs.
AA alkaline batteries

Batteries included

GRAS Sound & Vibration 保留更改规格和配件的权利，恕不另行通知。