ZeroDT – FM8
The ZeroDT FM-8 is a solution for providing overvoltage transient (surge) protection for the power input and output signals for devices such as ultrasonic flow meters or any instrument utilizing a power loop and multiple communication outputs (8 wires/4 loops).
The protection is mounted in a Type 4X cast 413 aluminum enclosure suitable for Class 1, Division 1 or Class 1, Division 2 area locations. The FM-8 is utilized as a “conduit junction box” next to the device to be protected.
PRODUCT DESCRIPTION:
Electrical Specifications
- Response Time: <5 nanoseconds
- Configuration: Series connected, or pass-thru -- protects 4 pair or 8 wires
- Nominal Operating Voltage: 24 VDC
- Maximum Pass-thru Current (each line): 8 Amps
- Maximum Continuous Operating Voltage (MCOV) Line-to-Ground: 36 VDC
- Nominal Surge Current, INom (able to withstand repeated applications on each line):
- 8/20 µs (IEEE/ANSI C62.41 Combination Wave), Line-to-Ground: >1,200 Amps
- 10/1000 µs (IEEE/ANSI C62.41 Long Wave), Line-to-Ground: >130 Amps
Mechanical Specifications:
- Power & Signal Input / Output Connections: Screw compression lug
- Conductor Size: #26 to #14 AWG
- Enclosure Manufacturer/Catalog Number: Killark HKBX box and HKX2D dome cover
- Grounding/Earthing: Grounding terminal on exterior of enclosure
- Enclosure Openings: Qty 3, ¾” NPT
Environmental Specifications
- Operating / Storage Temperature: -40oC to +65oC
- Humidity: 0 to 95% non-condensing
Certifications
- ZERODT I/O-24 Module mounted in the enclosure meets the requirements of:
- Hazardous Locations -- Class I, Division 2, Groups A, B, C, D T6
- Ordinary Locations – UL 497B
- Enclosure meets the requirements of:
- Hazardous Locations -- Class I, Groups A, B, C, D;
- Class I, Zone 1, AEx db IIC;
- Classs II, Groups E, F, G;
- Class III
