Type designation Product features Over-voltage protectors • Transient voltage protection of 4-20 mA current loops • 3-stage protection • 10 kA surge (8 / 20 µs) withstand capability • 41 V max. output voltage • TS-35 rail mounting, 25 mm width • IP 65 enclosure versions GROUNDING Floating Grounded Floating The DT320 … / DT321 … Over-voltage protectors are designed to protect the 4-20 mA transmitter loop against over-voltage. The units use 3 stages of protective components: spark gap, varistor and zener supressor. The maximum surge current withstand capability is 10 kV and the maximum output voltage is 41 V. The types DT320 G and DT321 G have grounded outputs the DT320 F and DT321 F have floating outputs. There are two versions of housing: the types DT320… are rail mounting for installation in cabinet, the types DT321… are IP 65 protected for field installation. H-1148 Budapest, Fogarasi út 5., Hungary Tel.: +361 460-1000 Fax: +361 460-1001 e-mail: [email protected] www.datcon.eu

Technical specification Safety data: The connection terminals of the supply voltages are isolated from each other, the isolation is in compliance with the standard EN 61010-1, taking into consideration the following: Pollution level: Measurement category: Input parameters: Input signal: Input current: Input-output serial resistor: Output parameters: Output signal: 23.4 VDC (24 VDC input voltage at 20 mA output current) Overvoltage protection: Ambient conditions: Operating temperature range: Relative humidity: DT320 ... : terminal assembly box, rail General data: Housing: mounting on TS-35 rail...