| Attribute | Value |
|---|---|
| Product Name | Turck IM33-22EX-HI/24VDC Isolating Transducer |
| Brand | Turck |
| Category | Industrial Automation |
| Type | Interface Module / Isolating Transducer |
| HART Compatible | Yes |
| Model Number | IM33-22EX-HI/24VDC |
| Input Signal | 4–20 mA (Source) |
| Load Resistance | 500 Ohm |
| Supply Voltage | 19–29 VDC |
| Power Consumption | Less than 3.2 W |
| Intrinsic Safety Inputs | 1–6 (IM33-22) |
| Uo | 21.9 V |
| Io | 95 mA |
| Ri | 331 Ohm |
| Operating Temperature | -25°C to +70°C |
| Maximum Voltage (Um) | 250 Veff |
| Certification | IECEx TUN 06.0009X |
| Classification | II (1) GD, II 3 G Cl I, Div 1, Grps A, B, C, D Cl II, Div 1, Grps E, F, G Cl III, Div 1 |
| Temperature Rating | -13°F to +140°F |
| Weight | 170 g |
| Reference Number | 58523 |
What is the Turck IM33-22EX-HI/24VDC Isolating Transducer?
The Turck IM33-22EX-HI/24VDC is an intrinsically safe, isolated transducer used to connect field devices from hazardous areas (Zone 0/1/2) to safe-zone controllers. This is done by isolating, converting, and conditioning the analog input signals so as to ensure safety, accuracy, and noise-free transmission.
Isolator provides the interface between “unsafe” field areas and sensitive automation equipment such as PLCs, DCS, recorders, and controllers. Advanced isolation circuits minimize the effects of interference, ground loops, and signal distortion on data integrity, ensuring consistent and reliable data transfer.
Areas where precision is mandatory and explosion protection is needed include oil & gas, chemicals, marine, and process plants; hence, it finds wide applications in these industries.
Key Features of Turck IM33-22EX-HI/24VDC Isolating Transducer
1. Intrinsically Safe Signal Isolation
It is designed for hazardous zones, providing galvanic isolation between field and control systems to prevent any electrical risks, thus ensuring operator safety.
2. High Signal Accuracy
Provides for accurate measurement and sure process control by minimizing noise, drift, and distortion.
3. Multiple Input Compatibility
Supports various sensor inputs including:
- 4–20 mA signals
- RTDs
- Thermocouples
- 0–10 V signals
This flexibility makes it suitable for diverse automation installations.
4. 24 VDC Powered
A standard 24V DC supply ensures compatibility with most industrial control panels and power systems.
5. Immunity to Electrical Interference
Built-in filters and shielding protect against:
- EMI stands for Electromagnetic Interference.
- RFI: Radio Frequency Interference
- Ground loops
This ensures consistent, noise-free signal performance.
6. LED Diagnostic Indicators
Integrated LEDs provide real-time status on power, signal, and fault conditions to simplify troubleshooting.
7. Compact DIN-Rail Mount Design
Fits easily into control cabinets, reduces installation space, and supports modern panel design requirements.
8. Long-Life Industrial Reliability
Constructed with high-level components compatible with extreme temperatures, vibrations, and continuous operation.
Applications of the Turck IM33-22EX-HI/24VDC
The isolating transducer is widely used across sectors needing safe signal transmission between hazardous and non-hazardous zones.
1. Oil & Gas Industry
Used for sensor isolation in:
- Offshore platforms
- Refinery process lines
- Tank level measurement
- Pressure and temperature monitoring
- Ensures explosion-safe signal transmission.
2. Chemical & Petrochemical Plants
Provides controllers with protection against volatile field zone signals. Ensures stable monitoring of corrosive or flammable process systems.
3. Marine & Ship Automation
Perfect for ship engine rooms and marine automation systems where:
- Hazardous vapors present
- Vibration and electrical noise are common
- High reliability is required.
- Ensures safe control of pumps, compressors, and monitoring instruments.
4. Pharmaceutical & Food Processing
Supports precise temperature, pressure, and flow measurements where hygiene and safety are paramount.
5. Water & Wastewater Treatment
Ensures clean signal conditioning for sensors operating in damp or corrosive environments.
6. Power Plants & Utilities
Employed in high-voltage areas to protect instrumentation and PLCs from electrical disturbances and differences in ground potential.
Why Choose the Turck IM33-22EX-HI/24VDC Isolating Transducer?
High Safety for Hazardous Areas
Its intrinsic safety design fulfills all the requirements to meet international explosion protection standards, making it well-suited for Zone 0/1 applications.
Reliable Signal Integrity
Turck provides the most advanced signal conditioners with unparalleled accuracy and immunity from interference.
Wide Industry Compatibility
Supports industrial standard sensors and controllers for easy and flexible integration.
Long-Term Durability
Engineered for rugged industrial conditions of temperature extremes, vibration, and continuous operation.
Easy Installation & Maintenance
Setup is fast and troubleshooting easy with the DIN-rail mounting, LED diagnostics, and clear labeling.
Trusted Brand in Automation
Turck is a world leader with a reputation for high-quality sensors, transducers, and signal conditioning technologies applied in critical operations throughout the world.











