ACT125 Conductivity Transmitter with High/Low Relay Control
The ARTang ACT125 is a panel-mount conductivity transmitter and controller for water treatment, process-water monitoring and OEM equipment.
It supports conductivity electrodes with cell constants of 0.1, 1.0 and 10.0 cm⁻¹, with measurement ranges up to 200 mS/cm depending on the selected configuration.
Analog Output: 4–20 mA
Control Outputs: High/low-limit relays
Temperature Compensation: Automatic
Power Supply: 24 V DC
Product Description
The ACT125 connects to a compatible conductivity electrode to measure water and aqueous process liquids. Operators can check the measurement locally, send it to a PLC through the 4–20 mA output and use the relay outputs for external alarms or control circuits.
High- and low-limit functions support applications where conductivity must be monitored against upper and lower thresholds.
The panel-mounted design suits water-treatment skids, control cabinets and equipment panels.
Technical Specifications
|
Parameter |
Specification |
|---|---|
|
Model |
ACT125 |
|
Product type |
Panel-mount conductivity transmitter and controller |
|
Measurement Ranges |
See range and electrode table below |
|
Accuracy |
1.5% FS |
|
Temperature Compensation |
Automatic |
|
Process Temperature |
0–100°C, subject to the selected electrode’s rating |
|
Supported Electrode Cell Constants |
0.1, 1.0 and 10.0 cm⁻ |
|
Display |
3½-digit segment LCD |
|
Analog Output |
4–20 mA |
|
Control Outputs |
High/low-limit relays |
|
Power Supply |
24 V DC |
|
Ambient Temperature |
0–50°C |
|
Relative Humidity |
≤85% |
|
Housing Dimensions |
96 × 96 × 46 mm (H × W × D) |
|
Panel Cutout |
92 × 92 mm (H × W) |
|
Installation |
Panel mount |
Measurement Ranges and Electrode Selection
|
Available Measurement Range |
Electrode Cell Constant |
|---|---|
|
0–20 μS/cm |
0.1 cm⁻ |
|
0–20 μS/cm; 0–200 μS/cm; 0–2,000 μS/cm |
1.0 cm⁻¹ |
|
0–20 mS/cm |
1.0 cm⁻¹ |
|
0–200 mS/cm |
10.0 cm⁻¹ |
Product Features and Advantages
High- and Low-Limit Relay Control
The ACT125 provides high/low-limit relay outputs for applications requiring conductivity threshold monitoring. This supports equipment designs that need both an upper conductivity warning and a lower conductivity warning.
4–20 mA Output for PLC Integration
Automatic Temperature Compensation
Compact Design for Control Panels
24 V DC Power and Multiple Electrode Constants
Typical Applications
Water Treatment and Reverse Osmosis Systems
Monitor conductivity at selected feed-water, treated-water or permeate measurement points.
Rinse-Water Monitoring
Process and Circulating Water
Provide local indication and remote monitoring for industrial process-water supplies, circulating-water systems and cooling-water equipment.
OEM Water-Treatment Equipment
Integrate conductivity measurement and threshold outputs into water-treatment skids, monitoring panels and liquid-processing equipment.
Frequently Asked Questions
The 4–20 mA output represents the measured conductivity for a compatible analog input. The high/low-limit relay outputs provide switching signals for external alarms or control circuits.
The ACT125 supports cell constants of 0.1, 1.0 and 10.0 cm⁻¹. The electrode’s temperature element, wiring, measurement range and process compatibility must also match the instrument and application.
The panel cutout is 92 × 92 mm. The housing measures 96 × 96 × 46 mm, excluding any additional installation clearance needed for connections and wiring.
Discuss Your Conductivity Control Requirements
Send ARTang your expected conductivity range, process liquid, temperature, pressure and alarm requirements. If you already have a sensor, include its model, cell constant and temperature element.
Our technical team can help review the ACT125 configuration, electrode pairing and system connections for your equipment.
Factory Strength & Quality Assurance
ARTang supports industrial measurement projects with in-house production, strict calibration, certified quality control, and global exhibition experience.
Factory Production
In-house production and assembly for stable product quality and reliable delivery.
CNC Machining Equipment
Product Assembly
CNC Machining
Welding Process
warehouse
Technical Support Department
Certified Quality
Product certificates and quality control systems support reliable industrial measurement applications.
CE
ISO
3-A
NEPSI
Exhibition Experience
ARTang meets customers and distributors at industry exhibitions to better understand project needs and market requirements.
