Rotronic HF5A

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.

Description

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.

Functions

Enables access to all HC2A and RMS digital interchangeable probes for Humidity and Temperature, Temperature Only or Differential Pressure measurements
Equipped with NFC Interface, for fast configuration even with NFC powerless function
Indicator LED on front Housing of the operating status and monitoring of analogue outputs
Range of application electronics up to -40…70°C / 0…100 %rH
HF5A-21 (2×2-wire loop version) Namur NE43 Compliant for fault diagnosis.

Specifications

	HF5A-2 2-wire	HF5A-3/ HF5A-D 3- /4-wire
RH+T sensor	HygroClip2, HC2 sensors, various versions
Accuracy at 23 ± 5 °C	Dependent on the sensor
Initialization time	Standard > 30 sec.	Standard 3 sec.
Measurement range	Sensor dependent
Application range	-10…60 °C with display / -40…70 °C without display / Humidity 0…100 %rH (without condensation)
Trend indication	Yes
Display resolution	Resolution up to 2 decimals (0.01)
Outputs	4…20 mA	0…5, 0…10 V, 0…20mA, 4…20 mA. Freely scalable outputs, 4…20 mA standard.
Analog output resolution	≥ 15 bit
Digital output	–	RS485 signals on screw terminal
Cable entry and connections	1 x M16 x 1.5 Screw terminal, (2 x M16 for HF5A-D)
Psychrometric calculations	All
Power supply	18…36 VDC (Vmin =12 VDC + 6 VDC)	18…36 VDC
Circuit design	2-wire	3-wire when Jumper J1 is placed (default) 4-wire and galvanically isolated when Jumper J1 is not placed
Power consumption	50 mA (with 2 loaded outputs)	< 100 mA (with 2 loaded outputs)
Load per analog output	Max. 500 Ω	Current: Max. 500 Ω Voltage: Min. 10 kΩ
Interface	NFC Interface
Software	Accessory NFC-USB-READER: NFC to USB Reader or with the HygroSoft software mobile app and a mobile phone with an integrated NFC-Reader.
Housing material	Top: PC, Bottom: ABS
Standards	CE Conformity 2014/30/EU
GMP/ FDA Compliance	GAMP5 and FDA 21 CFR Part 11
Dimensions	134 × 94 × 52 mm
Weight	Display version 277g, others 270g
IP rating	IP65
Fire protection class	According to UL94-HB
Solder material	Lead-free (RoHS Directive 2011/65/ EU)