The ACM sensor evaluates the corrosivity of atmospheric environments.
The ACM (Atmospheric Corrosion Monitor type corrosion sensor (hereinafter, ACM Sensor) was developed by Prof. Emeritus Shigeo Tsujikawa of the University of Tokyo, Director Tadashi Shinohara of the National Institute for Materials Science (NIMS) and Prof. Shin'ichi Motoda of Tokyo University of Marine Science and Technology, and enables direct measurement of the corrosion current of metals, which is generated electrochemically by environmental factors. In other words, direct and quantitative evaluation of corrosion environments is possible by analyzing the output of the ACM sensor.
Sensor Lineup
Various shapes are available to suit different environments. We also accept custom orders.
Standard Type
- Compliant with JIS Z 2384
Masking Type
- Preventing leakage current from the substrate edges and backside.
- Ideal for use in environments with heavy water exposure.
Small Type
- Approximately 1/4 the size of the standard type.
- Ideal for measurement in limited spaces.
Thin Type
- Approximately 1/4 the thickness of the standard type(0.2mmt).
- Ideal for curved surface measurements.
Specifications
Standard type ACM sensor
・Substrate Structure: Insulating paint is applied to the target metal (SPCC, hot-dip galvanized steel, etc.), and a conductive paste (e.g., Ag) is layered on top, ensuring perfect insulation from the base.
・Sensor Criterion: Only units demonstrating a dry-state resistance of 1 GΩ or higher between electrodes are selected for use as sensors.
Materials
Carbon Steel, Galvanized Steel (without Z27 chemical conversion
treatment),Stainless Steel, Aluminum Alloy, Magnesium Alloy, etc., *Materials supplied by Customers (Consultation Required)
Sensor Output
0.1nA～1mA
Lead Wire
1m *Length and Specifications can be customized.
Connection to Measuring Equipment
Waterproof Connector, etc., *Custom-made is also available
Supported Devices
SACM-311E SACM-311E-NS SACM-312B SACM-314B SACM-318B SACM-31FB SACM-50F SACM-311B
Inter-electrode Resistance
Up to 1GΩ
Heat Resistance
150℃ Standard red/black cables: 60°C max. *Heat-resistant cable option available.
Option
Options can be combined to suit your specific installation environment.
Sensor holder NEW
- Easily mounts to structures and pillars.
- Covers lead wire connections to prevent disconnection.
Waterproof connector
- Ideal for preventing water ingress.
- Quick and easy removal.
Extension cable
- For sensors placed far from the instrument.
- Quick and easy removal.