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2-channel Sensor Amplifier
SR-2210A

The SR-2210A is a sensor amplifier for measuring both sound and vibration, compatible with CCLD (constant current drive) microphones and accelerometers.

It can be used as a front-stage amplifier for recording and analysis using oscilloscopes or data loggers, and can also be directly connected to the PLC for device control.

Output gain can be adjusted in 10 dB steps (–10 dB to +60 dB), allowing for optimal output levels as an amplifier for microphones.

Features

  • Supports sensors with a power supply of 4 mA/24 V
    Measurements are possible using sensors such as the low-noise microphone MI-1282M10 and the ultra-compact Accelerometer NP-3211. 

  • Supports frequency weighting characteristics (A/C/FLAT(Z))
    It supports two frequency weightings: A-weighting, which matches the human ear's perception, and C-weighting, which is suitable for measuring loud noises and impact sounds.

  • Simultaneous measurement of 2 channels is possible.
    This single unit can perform measurements that utilize two channels, such as shipping inspections that simultaneously measure sound pressure and vibration, and sound insulation performance measurements at two locations separated by a wall.

  • Supports two types of power systems
    It is compatible with batteries (4 x AA batteries) and an AC adapter (PB-7090 optional).

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Specification

Constant current power supply Current: 4 mA ± 20% (at 25°C)
Voltage: DC 24 V typ. (23 V to 26 V)
Number of Channels 2 channels
Operating frequency range 1 Hz to 20 kHz (±0.5 dB, gain 0 dB, FLAT(Z) with 1 kHz reference)
(Load impedance 100 kΩ or higher)
Input Impedance 1 MΩ ± 0.5%
Input cutoff frequency Approximately 0.16 Hz
Input Voltage Range Up to 12.5 dBVrms (±6 V)
Gain –10 dB/0 dB/10 dB/20 dB/30 dB/40 dB/50 dB/60 dB (± 0.2 dB)
(8-step switching in 10 dB increments)
Frequency weighting characteristics A/C/FLAT(Z) (Compatible standards IEC 61672-1, JIS C 1509-1)
Output cutoff frequency Approximately 0.2 Hz or less (load impedance of 100 kΩ or more)
Approximately 0.4 Hz or less (load impedance of 50 kΩ or more)
Input-referred self-noise A -105 dBVrms or less
C -100 dBVrms or less
Z (FLAT) -95 dBVrms or less
Input/Output Connectors BNC (C02)
Output Voltage Range Up to 12.6 dBVrms (±6 V)
Maximum output extension Within 30m
Power supply 4 pieces AA batteries
External power: PB-7090*​ AC adapter (optional)
*PB-7090 is not compatible for SR-2200. Do not connect and use it in this manner. It may cause malfunction.
Continuous Operation Time More than 20 hours
*When using the Measurement Microphone MI-1235 and Microphone Preamplifier MI-3111.
*When using 4 AA alkaline batteries (LR06)
Operating Temperature Range -10 to +50°C (excluding batteries)
Storage Temperature Range -20 to +60°C (excluding batteries)
Operating Humidity Range 30 to 90% RH (non-condensing)
Storage Humidity Range 10 to 90% RH (non-condensing)
Outline dimensions 140 (W) × 40 (H) × 125 (D) mm (excluding protrusions)
Weight Approximately 500 g (including batteries)
Accessories Instruction Manuals
Price  

* If a sensor with TEDS functionality is connected, the TEDS function will be disabled.

System Configurations

Model name   Length Price (tax included) Operating Temperature Range
MX-1001 Low/High Temperature Signal Cable
Composition No. 1		 1.5 m   -30 to +80°C
MX-1005 5 m  
MX-1020 20 m  
MX-2001 Composition No. 2 1.5 m   0 to +60°C
MX-2005 5 m  
MX-2020 20 m  
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Outline Drawings

Instruction Manuals

最終更新日:2026/07/22