Description
Applications
The HF5-EX series transmitters is a two-channel transmitters for the exact measurement of humidity and temperature in explosive atmospheres. This device conforms to the latest international standards and probes are certified for operation in Zone 0/20 and transmitter itself certified for Zone 1/21. The HF5-EX series consists of a robust aluminium transmitter with or without display. The system doesn’t require an intrinsically safe power supply as the circuitry design includes electrical isolation of the measuring system.
Specifications
| Device Type | HF520EX 2 x 2-wire |
| Probe Type | HC2-EX Probe (Available separately) |
| Probe Cable Extension | Passive: Max 10m |
| Accuracy at 23°C, ±5°C | ±0.8%RH / 0.1°C |
| Start-up | Standard Cold <60 secs / Warm <30 secs |
| Measurement Range | -40 to +60°C / 0 to 100%RH |
| Electronic Operating Range | -40 to +60°C / 0 to 100%RH (-10 to +60°C with Display) |
| Display Option | Optional LCD Without Backlight |
| Output Signals | 2 x 4-20mA, Two Wire. |
| Power Supply | 10-28vDC |
| Power Consumption | Max 2 x 24mA, Start Up / 2 x 20mA, Operation. |
| Serial Interface | UART Internal Service Interface (Only to be used outside the hazardous area) |
| Housing Material | Aluminium (IP66) |
| Cable Connections | 1 x M16 x 1.5 Gland |
| ATEX Directive | EU94/9/EC (ATEX) |
| ATEX Identification
|
II 2(1) G Ex eb mb [ia Ga] IIC T5 Gb
II 2(1) D Ex tb [ia Ga] IIIC T80°C Db |
