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MTL7787+ Barrier
Brand: Status InstrumentsThe 7787+ barrier contains two stages of pulse-tested Zener or forward-connected diodes and an ‘infallible’ terminating resistor.
In the event of an electrical fault in the safe area, the diodes limit the voltage that can reach the hazardous area and the resistor limits the current.
A fuse protects the diodes, and the two stages of voltage limitation ensure continued safety if either stage should fail. No active output-current limiting circuits are employed.
The MTL7787+ is certified ‘ia’ for all zones and ‘IIC’ for all explosive atmospheres.
Specifications
Brand
Ambient Temperature Range
- -20° to 60° C (-4° to 140° F)
Applications
- Transmitters Controller Outputs, Switches
Approvals & Certifications
- CE
- CSA
- Ex
- FM
Electrical Rating
- 50 mA at 27.2 V, Max.
Environmental Protection
- Hazardous Area
Load
- 250 ohms
Operating Voltages
- 26.6 V at 10 µA or 1 µA
Output
- 4-20 mA
Supply Voltage
- 26 V
