This system features auto-ranging capabilities to measure ACM sensor output currents with optimal range selection. By analyzing this sensor output alongside temperature and humidity, it effectively determines corrosion rates, time of wetness, and sea salt deposition. Furthermore, its low-power design minimizes energy consumption, making it ideal for long-term battery operation.
Logger Lineup
Various shapes are available to suit different environments. We also accept custom orders.

Mobile Type(Built-in Temp/Humidity Sensor)
SACM-311E
- Lithium-battery powered.
- Approx. 1-year continuous monitoring.

Mobile Type(External Temp/Humidity Sensor)
SACM-311E-NS
- Lithium-battery powered.
- Approx. 1-year continuous monitoring.

Low-Power Type
SACM-312B/314B
- Measure up to 2 ACM sensors and 1 T/H sensor.
- Battery or AC adapter powered.

Multi-Channel Type
SACM-318B
- Measure up to 8 ACM sensors and 2 T/H sensors.
- Battery or AC adapter powered.

Multi-Channel Type
SACM-31FB
- Measure up to 16 ACM sensors and 4 T/H sensors.
- Battery or AC adapter powered.

Lab Type
SACM-50F
- Connect to PC for real-time monitoring.
- Display data graphs.
- Measure up to 16 ACM sensors and 4 T/H sensors.
Specifications

Flexible Power Options: Operates on either battery or AC power to suit various installation needs.
No external power required: Solar + battery combination ensures maintenance-free operation.
Number of Measurement Channels
ACM Sensor: max. 8 Temperature: 1 Humidity: 1
Data Acquisition and Format
10 mins interval (Adjustment Possible)
Connection to Measuring Equipment
Terminal block / Waterproof connector *Depends on the model.
Data Acquisition and Format
Text format (readable by spreadsheet software, etc.)
Data Storage
Industrial microSD card / Industrial SD card / Industrial USB etc. *Depends on the model.
Power
Battery / AC / 12V Battery *Depends on the model.
Option
Options can be combined to suit your specific installation environment.

Temperature/Humidity Sensor(STHM-11S2)
- Simultaneously measures temperature and humidity.
- Required for sea salt deposition calculations.

Radiation shield
- Protects theTemperature/Humidity Sensor from wind and rain.

ACM Analysis Software
- Automatically calculates time of wetness and sea salt deposition.
- Certified by the Japan Society of Corrosion Engineering (JSCE).

Battery/Solar panel
- Ideal for outdoor environments.

Waterproof box
- Recommended for extra waterproof protection.
- Ideal for outdoor monitoring.
