Description
The HF5A-series is the latest development in advanced measurement transmitters. Compatible with our range of digital (HC2, HC2A and RMS) probes for humidity and temperature, temperature only, and differential pressure. The HF5A can also provide all standard psychrometric outputs. Our advanced digital probes have integrated AirChip3000 technology – thanks to which the probes achieve an unparalleled degree of accuracy. For Humidity and Temperature measurements the HygroFlex5 Advanced HF5A-21, HF5A-31 and HF5A-D1 transmitters combined with a HC2A-S advanced probe provide superb precision and state-of-the-art functionality, taking humidity and temperature measurement to a whole new level of accuracy < 0.8 %rh and < 0.1 K at 23 °C. HygroFlex5 outputs include mA, voltage and modbus RTU via RS485.
Specification
| General |
Description |
| Device type |
Transmitter for different probesMeasurement parameters, depending on transmitter version and probe model•Humidity•Temperature•Differential pressure•CO2 |
| Range of application |
-40…70 °C / 0…100 %rh, non-condensing-10…60 °C / 0…100 %rh, non-condensing with display |
| Mounting type |
Wall mount only (Duct mount achievable together with industrial cable probe) |
| Circuit type |
2-wire: HF5A-213-/ 4-wire: HF5A-31 & HF5A-D1 with the recommendation:4-wire galvanic separated with unmounted Jumper J1 – with the benefit that the power supply and the outputs are separated galvanic isolated. Per default, the Jumper J1 is mounted. |
| General Specification |
Description |
| Optional Display |
LCD |
| Resolution of the Display |
128 * 64 pixel |
| First time start up time |
2-wire: < 30 s (Blinking Led or Display turn on after 10 sec.)3-/ 4-wire: < 3 s |
| Measuring interval |
2-wire: 4…10 sec. (Depending on current consumption of connected probe), HCD 1 sec.3-/ 4-wire: 1 s |
| Simulation |
Fixed values can be set for system validation |
| Storage and transport conditions |
-40…85 °C / 0…100 %rh, non-condensing |
| Operating altitude |
Max 2000 meter above sea level |
| Electrical connections |
HF5A-2: 4-pole screw-terminalHF5A-3 & HF5A-D: 6-pole screw-terminalHF5A-D: Additional 3-pol screw-terminal (for the RS485 connectors) |
| Psychrometric Calculation |
•Dew point (DP) above and below freezing point•Frost point (FP) above and below freezing point and dew point above freezing point•Wet bulb temperature (Tw)•Enthalpy (H)•Vapor concentration (Dv)•Specific Moisture (Q)•Mixing ratio (R)•Vapor concentration at saturation (Dvs)•Vapor partial pressure (E)•Vapor saturation pressure (Ew)•Volume mixing ratio |
| Digital Interface |
Description |
| NFC Interface |
Via NFC Interface |
| RS485 |
Half duplex, baud rate adjustable (only digital version) |
| Software compatibility |
HygroSoft Software |
| Protocol |
Description |
| Rotronic-ASCII-Protocol |
Sensor communication |
| Modbus RTU |
Sensor communication (RMS-Probes), RS485 Interface (only digital version) |
| Power supply and connections |
Description |
| Supply voltage |
Galvanically separated: 18…36 VDC |
| Current consumption |
2-wire: 50 mA / 24 VDC3-/4-wire: < 100mA / 24 VDC |
| Polarity protection |
Yes |
| Humidity and Temperature |
Description |
| HC2 and HC2A |
Compatible with all versions |
| HCD |
Compatible with all versions |
| Temperature Measurement |
Description |
| TCD |
Compatible with all versions |
| Differential pressure Measurement |
Description |
| PCD (RMS Probe) |
Only with 3-/4 -wire HF5A-31 & HF5A-D1 |
| CO2 Measurement |
Description |
| CCD (RMS Probe) |
Only with 3-/4 -wire HF5A-31 & HF5A-D1 |
| Analog Output |
Description |
| Quantity |
2 |
| Assignment |
Outputs can be assigned to each measured value |
| Default setting assignment |
Humidity and temperature |
| Standard Ranges |
•4…20 mA3-/4-wire HFA-31 & HF5A-D1:•0…20 mA•0…5 V•0…10 V |
| Default setting Ranges |
4…20 mA |
| Measuring signal |
Freely scalable |
| Accuracy @ 23 °C |
Current output: ± 20 µAVoltage output: ± 1 mV |
| Measurement Interval |
1 s |
| Short-circuit protection |
Yes |
| Max Load |
500 Ω |
| Load compensation |
Automatically |
| Min. Load resistance |
Current output: 0 to 500 ΩVoltage output: 1 kΩ |
| Resolution |
Greater than 15 bit |
| Alarms |
Description |
| Assignment |
Alarms can be assigned to any measured value |
| Alarm thresholds |
High-Alarm, Upper Alarm thresholdLow-Alarm, Lowest Alarm threshold |
| Hysteresis |
For Low-Alarm and High-Alarm |
| Alarm indication on display |
All Alarms |
| Alarm trigger |
Log- or High-Alarm |
| Housing Specifications |
Description |
| Dimensions |
134 x 94 x 52 mm |
| Weight |
Display version: 277 g, Others: 270 g |
| Housing material |
Top: PCBottom: ABS |
| IP protection |
IP651 |
| Conformity with standards |
Description |
| EMC directives |
EMC-Directive 2014/30/EU:
EN 61000-6-1:2016EN 61000-6-2:2016EN 61000-6-4:2007+A1:2011 |
| Soldering material |
Lead free (RoHS-Directive 2011/65/EU) |
| Fire protection class |
Corresponds to UL94-HB |
| FDA/GAMP directives |
GAMP5 |
1IP65 is only fulfilled, when the necessary number of conductors is used so that the M16 cable strain provides an effective seal
