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Rotronic.comProcessSensing.com

12.1275.0101E

HF5A SERIES

Short Instruction Manual

Analog & Digital transmitter for humidity and temperature

Wall Version

Congratulations on your purchase of the new state-of-the-art HygroFlexAdvanced

5-Series transmitter. Please read these short instructions care lly before install-

ing the device.

1 GENERAL DESCRIPTION

The HygroFlexAdvanced 5-Series devices are universal transmit-

ters for the transmission of humidity and temperature measure-

ments. Compatible with all interchangeable HC2A probes. These

short instructions are limited to a description of the main  nctions

and installation of the device. The detailed instruction manual can

be found on ProcessSensing.com or by scanning the QR code.

2 DIMENSIONS / CONNECTIONS

3 MECHANICAL INSTALLATION

3.1 GENERAL RECOMMENDATIONS

Relative humidity is extremely temperature-dependent. In order to measure it pre-

cisely, the probe and sensors must be set exactly on the temperature level of the

environment to be measured. The installation site can therefore have a signiﬁ cant

influence on the performance of the device. Follow the guidelines below to ensure

optimum performance:

a. Select a representative installation site: Install the probe at a point where

the humidity, temperature and pressure conditions are representative for the

environment to be measured.

b. Ensure suﬃ cient air movement around the probe: An air flow of at least 1

meter/second accelerates and facilitates adjustment of the probe to changing

temperatures.

c. Avoid:

1. Probe too close to heating elements, cooling coils, cold or hot walls, direct

sunlight, etc.

2. Probe too close to steam, injectors, humidiﬁ ers or direct precipitation.

3. Unstable pressure conditions with high air turbulence.

d. Insert the probes as far as possible into the environment to be measured.

e. Avoid accumulation of condensation at the contact wires of the sensor. Install

the probe so that the tip points down. If that is not possible, install it in a

horizontal position.

3.2 MOUNTING THE WALL VERSION

Alignment

Mount the transmitter so that the probe points

down.

Mounting variant 1 (Drilling Plate)

Drill the necessary holes using the additional

drill template printed on the packaging. Then

insert the plugs delivered with the device and

mount the transmitter with the screws.

3.3 MOUNTING THE WALL VERSION WITH A STANDARD PROBE

To avoid measurement errors, the probe should be inserted into the environment

to be measured. If necessary, use the respective extension cable and mounting

flange to install the standard probe:

Mounting flange Probe diameter Temperature range

AC5005 15 mm 100 °C

3.4 MOUNTING THE WALL VERSION WITH AN INDUSTRIAL PROBE

To avoid measurement errors, the probe should be inserted into the environment to

be measured. If necessary, use the mounting flange to install the industrial probe:

Mounting flange Probe diameter Temperature range

AC1305 (AC1303-M) 15 mm 200 °C

4 ELECTRICAL INSTALLATIONS

4.1 3-OR 4-WIRE SETUP

The new HygroFlexAdvanced 5-Series HF5A-3 and HF5A-D can be used as a 3-wire

and galvanically isolated 4-wire. With the additional Jumper J1, located on the PCB

and indicated in section 4.4, can be chosen over 3-wire or 4-wire.

Default: 3-wire – J1 mounted, to change to 4-wire simply open up the trans-

mitter and remove Jumper J1.

Recommendation Rotronic: 4-wire galvanically separated with unmounted Jumper

J1 – with the beneﬁ t that the power supply and the outputs are separate galvani-

cally isolated.

4.2 SUPPLY VOLTAGE / TECHNOLOGY

Type Supply voltage Load Output

2- or 2x2-wire

HF5A-2 18…36 VDC * Max. 500 Ω 4…20 mA

3- or 4-wire: 3 wire – J1 mounted (Default) / 4 wire - Galvanically separated –

J1 unmounted

HF5A-3

18…36 VDC

Max. 500 Ω 4…20 mA **

Max. 500 Ω 0…20 mA

Min. 10 kΩ 0…5 V

Min. 10 kΩ 0…10 V

HF5A-D

Max. 500 Ω 4…20 mA **

Max. 500 Ω 0…20 mA

Min. 10 kΩ 0…5 V

Min. 10 kΩ 0…10 V

- Digital RS485

* V min = 0.024 mA * Rload = 0.024 * 500Ω = 12 V

** ¾-wire Current Outputs: Output current monitoring from 100 Ω load

guaranteed

Caution: Wrong supply voltages and excessively high loading of the outputs

can damage the transmitter

4.3 CURRENT CONSUMPTION OUTPUT

HF5A-2

When both outputs are connected, the maximum current consumption is 50 mA

HF5A-3/HF5A-D

When both outputs are connected, the maximum current is under 100 mA.

AC5005

4.4 TERMINAL CONFIGURATION / CONNECTION DIAGRAMS

The type is deﬁ ned using the table Supply Voltage / Technology to then use the

following connection diagrams:

2- or 2x2-wire / HF5A-2

Terminal overview Connection diagram

H-V+

H-OUT

T-V+

T-OUT

Two separated power

supply

One power supply

H-OUT

T-OUT

T-V+

Rload

+ -

Rload

+ -

H-V+ H-V+

Rload

+ -

H-OUT

T-V+

T-OUT

Recommendation: Two isolated power supplies – because the two output chan-

nels of the HF5A-2 are seperated galvanically isolated. Thus, the device (HF5A-2)

and the accociated evaluation electronics for each output channel can be acco-

modated in separate rooms of a building.

Terminal Description

K1-1-H-V+ Power Supply +

K1-2-H-OUT Analog humidity output

K1-3-T-V+ Power Supply +

K1-4-T-OUT Analog temperature output

3 wire / HF5A-3 & HF5A-D (Default – J1 mounted)

Terminal overview Connection diagram

VIN-

123

VIN+

OUT2-

OUT2+

OUT1-

OUT1+

RXTX+

RXTX-

S-GND

Current Voltage

+ -

VIN+

VIN-

OUT2+

OUT2-

OUT1+

OUT1-

Rload

+ -VIN+

VIN-

OUT2+

OUT2-

OUT1+

OUT1-

4 wire / HF5A-3 & HF5A-D (J1 unmounted)

Terminal overview Connection diagram

VIN-

123

VIN+

OUT2-

OUT2+

OUT1-

OUT1+

RXTX+

RXTX-

S-GND

Current Voltage

+ -

VIN+

VIN-

OUT2+

OUT2-

OUT1+

OUT1-

Rload

+ -

VIN+

VIN-

OUT2+

OUT2-

OUT1+

OUT1-

Recommendation: 4 wire Galvanically seperated with unmounted Jumper J1 –

with the beneﬁ t that the power supply and the outputs are separate galvanically

isolated. Per default the Jumper J1 is mounted.

Terminal

(HF5A-3 / HF5A-D)

Description

K1-1-VIN- Power Supply -

K1-2-VIN+ Power Supply +

K1-3-OUT2- Analog Output2-

K1-4-OUT2+ Analog Output2+

K1-5-OUT1- Analog Output1-

K1-5- OU T1+ Analog Output1+

Terminal

(HF5A-D) Digital

Description

K2-1-R XT X+ RS485+ (A)

K2-2-RXTX- RS485- (B)

K2-3-S-GND Signal Ground (-)

5 PROGRAMMING

The basic settings of the devices are made in the factory. Customer-speciﬁ c set-

tings can be made via the HW5 so ware together with an NFC to USB interface. The

so ware HW5 can be downloaded on the internet at: ProcessSensing.com.

The NFC interface is not password protected and can be used with the necessary

NFC-USB-READER and the so ware HW5. Manipulations can be prevented by means

of activation of the write protection  nction, which can be set in the so ware HW5.

5.1 SCALING / FIRMWARE UPDATE / ADJUSTMENT

The following settings can be made with the help of the HW5 so ware and an NFC

to USB interface:

• New scaling of the outputs

• Firmware update

• Adjustment of a mounted Probe

5.2 LED STATUS MODE

The HF5A has a mounted LED on the front of the transmitter to indicate the actual

status of the transmitter. Per default the simple LED status mode is activated:

Green = Normal operation

Orange = Simulation mode activated

Red = Alarm (Error)

Further information about the simple and the detailted LED Status Mode can be

found in the detailed HF5A manual (or by scanning the QR-Code).

5.3 PERIODIC CALIBRATION OF THE PROBE

Both the probe and the corresponding electronics are very stable and do not nor-

mally need to be changed or calibrated a er factory calibration. The long-term sta-

bility of the Rotronic Hygromer humidity probes is typically better than 1 %rh per

year. For maximum accuracy we recommend calibration of the probe about every 6

to 12 months.

More frequent calibration can be necessary in applications where the sensor is ex-

posed to pollutants. The calibration can be performed by the user himself on site or

in the laboratory / workshop. For routine calibrations the probe should be checked

at one or two points.

Technical data (Electronics operating range)

Temperature Models with display: -10…60 °C /

without display: -40…70 °C

Humidity 0…100 %rh, non-condensing

Technical data (Mechanics)

Housing Bottom: ABS

Top: PMMA

Technical data probe

Depending on probe

6 DELIVERY PACKAGE

• Transmitter HF5A

• Screws and dowels together with drill template

• Short instruction manual /  nctional certiﬁ cate

• Additional type plate and QR plates

OPEN

134

34 28

108

204

2626

134

4 x Ø4.5 mm

Ø = 5 mm

66 mm

120 mm

AC1303-M and

AC1305 mounting

Summary of content (4 pages)

PAGE 1
3.3 MOUNTING THE WALL VERSION WITH A STANDARD PROBE To avoid measurement errors, the probe should be inserted into the environment to be measured. If necessary, use the respective extension cable and mounting flange to install the standard probe: HF5A SERIES Short Instruction Manual Analog & Digital transmitter for humidity and temperature Wall Version Mounting flange AC5005 Congratulations on your purchase of the new state-of-the-art HygroFlexAdvanced 5-Series transmitter.
PAGE 2
3.3 MONTAGE DER WANDVERSION MIT EINEM STANDARDFÜHLER Zur Vermeidung von Messfehlern sollte der Fühler in die zu messende Umgebung eingetaucht sein. Verwenden Sie für die Installation des Standardfühlers gegebenenfalls das zugehörige Verlängerungskabel und den Montageflansch: HF5A-SERIE Kurzbedienungsanleitung Analoger und digitaler Messumformer für Feuchte- und Temperatur Wandversion Montageflansch AC5005 Herzlichen Glückwunsch zum Kauf Ihres neuen Messumformers aus der HygroFlexAdvanced 5-Serie.
PAGE 3
.3 MONTAGE DE LA VERSION MURALE AVEC UN CAPTEUR STANDARD Aﬁn d’éviter les erreurs de mesure, le capteur devrait être plongé dans l’environnement à mesurer. Utilisez si nécessaire le câble de rallonge et la bride de montage correspondants pour l’installation du capteur standard : HF5A-SERIE Manuel abrégé Transmetteur de mesure analogique et numérique pour humidité et température.
PAGE 4
3.3 MONTAGGIO DELLA VERSIONE A PARETE CON UNA SONDA STANDARD Per evitare errori di misura, la sonda dovrebbe essere inserita nell'ambiente da misurare.