Overview
The Ametek Drexelbrook Z-Tron III relay is an industrial-grade point level control instrument designed for tank and vessel monitoring applications. This discontinued relay unit provides reliable dry contact switching for liquid level detection and control across a broad range of industrial processes. The unit has been superseded by newer Z-Tron IV models but remains widely deployed in legacy systems where exact replacement is required.
Key Features
- DPDT Dry Contacts: Double-pole, double-throw relay contacts suitable for alarm and control circuit applications
- Compact Industrial Design: Rugged construction rated for demanding manufacturing and process control environments
- Fail-Safe Options: Supports High Level Failsafe (HLFS) and Low Level Failsafe (LLFS) modes for critical process safety
- Cote-Shield™ Technology: Patented coating compensation circuitry allows reliable operation in harsh or wet conditions
- Multiple Input/Output Configurations: Flexible wiring and terminal arrangements for easy system integration
Technical Specifications
- Input Voltage: 24 VDC
- Output Voltage: 120/240 VAC
- Relay Contact Rating: 1 watt
- Contact Type: DPDT (Double-Pole Double-Throw) dry contacts
- Sensing Element: Remote or integral mount options
- Cable Length: Maximum 25 feet (coaxial cable)
- Wire Gauge: 12–28 AWG
- Weight: 5.0 lbs
- Manufacturer Status: Discontinued
- Series: Z-Tron III Point Level Control
Typical Applications
- Tank and vessel level monitoring and control
- Pump start/stop automation based on liquid level
- High/low level alarms for process safety systems
- Sump pump and lift station control
- Water treatment and chemical process level detection
- Food and beverage processing tanks
- Industrial wastewater and effluent management
Compatibility & Replacements
Compatible With
- Legacy industrial process control systems using point level sensing
- 24 VDC control circuit power supplies
- 120/240 VAC load circuits and motor starters
- Remote and integral sensing element configurations
- Standard industrial relay terminal strips and wiring practices
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The Z-Tron III is discontinued; confirm model-specific requirements (insertion length code, sensing element type) to ensure proper fit and operation in your application.
Works With
- DPDT relay contact switching schemes in industrial control panels
- Fail-Safe relay modules (High Level Failsafe and Low Level Failsafe modes)
- Remote coaxial sensing probe assemblies
- Standard industrial automation wiring and terminal strip configurations
- Legacy point level control systems and retrofit applications
