Features
• 2 interchangeable HC2 or analog probes
• Range of application electronics: -40…60 °C / 0…100 %rh
-10…60 °C with LCD
• Digital outputs, also combinable with analog outputs
• Analog inputs (U/I)
• Data logging, up to 10‘000 measured values
• Relay outputs
• Use as simulator for system validation *
• Service interface
Description
The HF8 is a multi-function transmitter designed to meet the requirements of applications requiring multiple instruments with one self contained instrument. The HF8 has an extensive set of optional functions and settings that can be configured and enabled with the ROTRONIC HW4 software after connecting the HF8 to a PC.
Applications
Measures relative humidity, temperature and all calculated (psychrometric) parameters in the fields of HVAC, industry and pharmaceuticals.
Specification
| Number of probe inputs | 2 |
|---|---|
| 3rd party analogue probe input | 2 |
| Calibration / adjustment | with Software HW4 |
| Accuracy at 23 ±5 °C | ±0.8 %rh / ±0.1 K |
| Power consumption | 15 … 40 VDC or 12 … 28 VAC, 50-60 Hz
9 … 36 VDC, with galvanic isolation 85 … 265 VAC, 5 watts, 50-60 Hz with electrical isolation |
| Max. nr. of devices in RS485 network | 64 |
| Dimensions | 192 x102 x 52 mm |
| Initialisation time | Typically 1.9 sec. |
| Operating range | -40…85 °C / -10…60 °C (Models with display) 0…100 %rh, non-condensing |
| Display type | Optional graphics display. Presentation configurable. |
| Backlight | with Backlight |
| Engineering units displayed | 1 or 2 decimal places |
| Alerting | Yes |
| Alarm indicators | Yes |
| Exploitation software | ROTRONIC HW4 |
| Trend indicator | Yes, for models with display |
| Probe adjustment by keypad | display / keyboard |
| Psychrometric calculations | All psychrometric values |
| Analogue outputs scaleable by the user | Yes |
| Software Update | With internet and HW4 software |
| Data processing via HW4 | with interface cables |
| Circuit type | 3/4 wire |
| Configurable relay outputs | 4 |
| Service Interface | Mini USB (UART) |
| IP protection rating | IP65 (except models with USB / Ethernet interface) |
| Fire protection class | Complies UL94-HB |
| FDA/GAMP compatibility | FDA 21 CFR Part 11 and GAMP compatible |
| Keypad (with display only) | Yes |
| Acoustical alarm (Beeper) | Yes |
| Real time clock w.backup battery | Yes |
| Measuring range with interchangeable probe | 0…100 %rh and -100…200 °C |
| Measurement interval | 1 s (typical) |
| Memory size | 10,000 pairs of readings (relative humidity and temperature) with HC2; 10,000 readings with 1-channel sensor |
| Probe adjustment by software | Yes, with service cable |
| Analog output signal (standard) | 0…1 V, 0…5 V, 0…10 V, 0(4)…20 mA |
| Relay type and number | SPDT (single pole changeover); Max Switching voltage: 250 VAC*; Max Switching Current: 6A (*resistive load) |
| Communication interfaces | RS-485 / USB / LAN |
| Reverse voltage protection | Protection diode to V + |
| Max. cable length | Up to 5 m with passive cable. Up to 100 m with active cable. |
| Max. probe cable length | 10 m |
| Probe material | Dependent on probe |
| Enclosure material | ABS |
| Cable connections | 1x M16x1.5 or ½ “conduit adapter |
