Hontzsch UVA User manual

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U328_UFAUVAextAS102_B_e_210512 1/17
Operating Instructions
Transducers UVA and UFA
im Gehäuse AS102
Contents
1Safety Symbols .........................................................................................................................2
2Safety Precautions .....................................................................................................................2
3Intended Use.............................................................................................................................3
4Operating Safety .......................................................................................................................3
5Scope of Delivery.......................................................................................................................3
5.1 Description, Type Plates.....................................................................................................4
6Technical Specifications ..............................................................................................................4
6.1 Conformity with Standards .................................................................................................4
6.2 Storage Conditions ............................................................................................................4
6.3 Operating Conditions .........................................................................................................5
6.4 Compatibility ....................................................................................................................5
6.5 Housing and Connectors ....................................................................................................5
6.6 Electrical Data ..................................................................................................................5
6.7 Measurement Uncertainty ..................................................................................................6
7Installation................................................................................................................................6
7.1 Block Diagram ..................................................................................................................7
7.2 Wiring Diagrams ...............................................................................................................7
7.2.1 Shielding contact at cable bush ................................................................................7
7.2.2 Power supply .........................................................................................................8
7.2.3 Sensor input..........................................................................................................8
7.2.4 Analog output ........................................................................................................9
7.2.5 Relay output..........................................................................................................9
7.2.6 RS232 Interface...................................................................................................10
7.2.7 LCD display in housing cover (optional)...................................................................10
7.3 Tips on Electromagnetic Compatibility (EMC) ......................................................................11
7.4 Connection Cable ............................................................................................................11
8Functional Description ..............................................................................................................12
9Settings..................................................................................................................................13
10 Performance Test.....................................................................................................................13
11 Initial Operation.......................................................................................................................13
12 Operation ...............................................................................................................................13
13 Shut-down, Dismantling ...........................................................................................................14
14 Inspection...............................................................................................................................14
15 Maintenance............................................................................................................................14
16 Meaning of LEDs ......................................................................................................................14
17 Calibration ..............................................................................................................................14
18 Troubleshooting.......................................................................................................................15
19 Returns ..................................................................................................................................16
20 Disposal..................................................................................................................................16
21 Replacement Parts ...................................................................................................................16
22 Declaration of Conformity, Declaration of Incorporation ................................................................17

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1Safety Symbols
Warning!
Failure to observe the instructions can result in serious injury and damage to property!
Important notice!
Non-observance can result in serious damage to the equipment or restriction in performance!
2Safety Precautions
Danger to life, risk of injury and damage to material or property.
Read the Operating Instructions carefully before initial operation.
Observe general safety precautions as well as those included in various sections of these Operating
Instructions.
Hazard risks:
-non-observance of the Operating and Safety Instructions
-modifications to the device by the customer
-handling the device outside the specified operating conditions
-handling the transducers outside the specified operating conditions
-use of unsuitable power supplies and peripheral devices
-improper use of the device
Prevention of voltage hazards:
-use only the dedicated adapter plug for the mains supply
-make sure that the PC is correctly connected to the mains (earthed safety socket, earthing) when
using a USB connection
-when connecting analog outputs or inputs to peripheral devices make sure that these are correctly
connected to the mains(earthed safety socket, earthing)

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U328_UFAUVAextAS102_B_e_210512 3/17
3Intended Use
Transducers UFA and UVA are instruments for measuring flow velocity and flow rate:
UFA for use with vane wheel flow sensors FA or FAR and measuring tubes FA Di or FAR Di and UVA for use
with vortex flow sensors VA40 and measuring tubes VA Di. These instruments are designed for industrial
application. The AS102 is an aluminium housing in protection class IP65.
The manufacturer is not liable for damage caused by improper use and/or non-compliance with the regula-
tions.
Do not carry out any structural modifications to the transducers.
Always follow the instructions on the type plate, especially the information regarding supply voltage.
4Operating Safety
All steps described below must be carried out by qualified personnel only!
Please read the Operating Instructions carefully before unpacking theequipment!
Safety can only be guaranteed if the equipment is operated in accordance with the regulations. Improper
handling can result in serious injury and damage to property.
5Scope of Delivery
-Transducer UFA or UVA in AS102 aluminium housing
-LCD display 2x16 digit in the coverl (optional)
-Operating Instructions U328, Data Sheet
-CD-ROM with PC configuration software UCOM (optional)
-Interface cable RS232 for PC COM port connection (optional)
-USB adapter in addition to interface cable RS232 (optional)
Please check that everything listed in the Delivery Note / Technical Data Sheet is included in the delivery.

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5.1 Description, Type Plates
One of the following type plates can be found on the side of the housing:
Type plate UFA Type plate UVA
Type: UFA : transducer for vane wheel sensors
UVA : transducer for vortex sensors
S/N.: : serial number
Power: 230 VAC : supply voltage 230 V AC voltage
24 VDC : supply voltage 24 V DC voltage
12 VDC : supply voltage 12 V DC voltage
Input: FA/FAR : input for vane wheel sensors FA or FAR
VA : input for vortex sensors
Filter: ... : filtration of vane wheel input frequency
Output: 4-20 mA : analog output current 4-20 mA
0-10 V : analog output voltage 0-10V
RS232: ... : RJ22 plug
6Technical Specifications
6.1 Conformity with Standards
Transducers UFA / UVA are manufactured according to the best available technology, are safe and reliable
and comply with the relevant regulations, EU directives and standards.
6.2 Storage Conditions
Storage temperature: -30 to +70 °C

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6.3 Operating Conditions
ambient air temperature
of connection housing in use : -25 ... +50 °C
with optional LCD display : -20 ... +50 °C
protection class : IP65
mounting attitude : no restrictions, preferred with cable bush downward.
6.4 Compatibility
All Höntzsch vane wheel probes FA or FAR and all Höntzsch vane wheel measuring tubes FA Di or FAR Di
(without integrated transducer) can be connected to the UFA transducer.
The UFA replaces the U2a transducer with FA / FAR input.
All Höntzsch vortex probes VA and all Höntzsch vortex measuring tubes VA Di (without integrated trans-
ducer) can be connected to the UVA transducer. The UVA replaces the U2a transducer with VA input.
6.5 Housing and Connectors
protection class : housing IP65
material : aluminium
external dimensions : L/W/H = 150/100/80 mm
cable bush : screwed cable glands in nickel-plated brass for cable
diameter 5 ... 10 mm with shielding contacting
Anschlüsse : 'push-in' circuit board terminals
for wires with cross-section 0.14 ... 1.5 mm².
No tools necessary for strand connection, simply insert the
strand ends (twisted or with end sleeve) into the terminal.
Separate strands by applying pressure to the terminal release
spring with a pen or screwdriver
6.6 Electrical Data
Supply voltage, mains supply:
230 V AC (215 ... 255 V AC), 50 ... 60 Hz, power < 10 VA
24 V DC (20 ... 27 V DC), power < 5 W
12 V DC (10 ... 17 V DC), power < 5 W
The mains supply is electrically isolated from the UFA/UVA inputs and outputs.
UFA input flow v/FA or v/FAR:
For Höntzsch vane wheel flow sensors FA and FAR designed as probes (ZS, TS ..., ZSR, TSR ...) and as
measuring tubes (FA Di, FAR Di ...).
When using sensors in Ex-zone category 2 an isolation/supply unit (e.g. LDX2) is an essential requirement.
UVA input flow v/VA:
For Höntzsch vortex flow sensors VA designed as probes (VA40 ...) and as measuring tubes (VA Di ...).
When using sensors in Ex-zone categories 1 and 2 an isolation/supply unit (e.g. LDX2) is an essential re-
quirement.

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UFA analog output:
for FA and FAR*: 4 ... 20 mA = 0 ... x m/s (or m³/h),
for FAR: 4 ... 12 ... 20 mA = -x ... 0 ... +x m/s (or m³/h),
terminal values x configurable / burden max. 400 Ohm
Alternative:
for FA and FAR*: 0 ... 10 V = 0 ... x m/s (or m³/h),
for FAR: 0 ... 5 ... 10 V = -x ... 0 ... +x m/s (or m³/h),
terminal values x configurable / impedance 1 kOhm
* for FAR sensors when configuring the relay: ±flow direction
UVA analog output:
4 ... 20 mA = 0 ... x m/s (or m³/h),
terminal value x configurable / burden max. 400 Ohm
Alternative:
0 ... 10 V = 0 ... x m/s (or m³/h),
terminal value x configurable / impedance 1 kOhm
Relay:
(potential-free change-over contact), max. 300 mA / 27 V DC
configurable as limit value v, quantity pulse or ±flow direction (see under Fehler! Verweisquelle konnte
nicht gefunden werden. Functional Description)
RS232 interface:
for connection with UCOM, (see underl 8 Functional Description)
9600 Baud, 8Bit, no parity, 2 stop bits, Xon/Xoff
Connection for optional LCD display:
flat ribbon cable with 10-pin connector.
Do not plug in or out when live!
6.7 Measurement Uncertainty
Recording the measurement frequency (at 1000 Hz) : <0.1%
Analog output (terminal value) : <0.15%
Linearity errir : <0.1%
Temperature coefficient : <20 ppm/K (at 25 °K temperature difference
equivalent to <0.05%)
7Installation
The current European Specifications for Assembly, the recognised standards of good practice and this
Operating Instructions apply.

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7.1 Block Diagram
7.2 Wiring Diagrams
Electrical connection must be carried out according to the appropriate wiring diagram.
Faulty connection can cause damage to persons and destruction of the electronics.
Do not install or wire up the transducer under mains voltage. Non-compliance can cause damage to
persons and destruction of the electronics.
In this connection and depending on the configuration of the equipment, one of the following wiring dia-
grams must be taken into account. Wiring diagrams for measuring systems in customer-specific design will
be supplied separately.
7.2.1 Shielding contact at cable bush
UFA
UVA

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7.2.2 Power supply
Before connecting please check that the power supply is within the specification. Remove the housing cov-
er of the UFA or UVA to reveal the type plate with all relevant information.
With a supply voltage of 230 VAC please ensure that the non-insulated areas of terminals and connecting
cables are not touched when live!
7.2.3 Sensor input
If the housing has cable glands, shielding of the sensor connecting cable is contacted at cable gland.
P= protective earth
P= protective earth
FA / FAR Sensor
S= shielding
F1 = FA signal 1
G= FA ground
V+ = FA supply (*opt.)
F2 = FA signal 2 (**FAR only)
VA Sensor
S= shielding
F1 = VA signal
G= VA ground
V+ = VA supply

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7.2.4 Analog output
All relevant information can be found on the type plate.
The terminal value of the analog output can be configured with the PC software UCOM via the RS232 inter-
face. The customer-specific programmed value can be found in the accompanying documents.
7.2.5 Relay output
The change-over contact of the relay is shown in rest position (relay coil off).
The function of the relay output and the corresponding setting parameter can be configured with the PC
software UCOM via the RS232 interface. The customer-specific settings can be found in the documenta-
tion.
4-20 mA
Resistance max. 400 Ohm
S= shielding
0-10 V
Impedance 1 kOhm
S= shielding

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7.2.6 RS232 Interface
The RS232 interface connection is below left next to the connecting terminals.
The RJ22 plug of the PC connecting cable is plugged in to the socket (see Fig. 1). PC connection follows at
a COM port or using an optional USB adapter.
7.2.7 LCD display in housing cover (optional)
The flat ribbon cable with 10-pin connector should not be plugged in or out when live! Risk to
persons and equipment!
Visible are the readout potentiometer for the contrast of the LCD display, the reset button for the quantity
counter, the ST1 and ST2 jumpers (see under 8 Functional Description).
Fig. 1: PC connection with RJ22 plug with open cover
Fig. 2: LCD display connection with cover open

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U328_UFAUVAextAS102_B_e_210512 11/17
7.3 Tips on Electromagnetic Compatibility (EMC)
all connecting cables are to be kept as short as possible
with cable routes longer than 30 m or with strong electromagnetic disturbance along the cable route
between sensor and evaluation unit, the use of a double-shielded cable is recommended: to do this lay
inner shielding to one side of the evaluation unit and lay outer shielding on both sides over a large area
with low-impedance connection on the sensor and evaluation unit or on the control cabinet
do not loop or kink the cable
lay non-allocated cable strands on both sides on protective potential
lay cables as close to ground as possible, as for example side panels, mounting plates or steel girders
when using frequency converters there is a risk of HF interference. Therefore, decouple the power input
of the frequency converter against active emitted interference using a radio interference filter. This also
increases the passive interference resistance of the facility
between engines and converters use only shielded engine cables, with double-sided shielding overlay
spacially separate cables which emit interference from measuring lines and evaluation units. If neces-
sary, lay measuring lines in a metallic tubular cable protection
metallic parts in control cabinets such as subracks with control electronics or subplates –to be con-
nected over a large area and HF-wise suitably conductive
wire relays, switches and magnetic valves installed in the same circuit, using spark extinguisher combi-
nations or over-voltage limiting components
apply analog signal cable shielding on one side only –preferably on the evaluation unit - and low re-
sistant. Twist unshielded cables against balanced induction
apply digital signal cable shielding on both sides over a large area. In the case of potential differences
between these points it is advisable to lay a separate equipotential bonding conductor
allow for preferred shielded connector for connections to points of separation of connection cables.
Terminals should be situated in HF-tight housing, with suitable EMC cable entry points. Contact outer
shielding of the connection cables to the cable entry points.
7.4 Connection Cable
.
For connecting between sensor and evaluation unit LiYCY cable with simple copper braiding screen can be
used if the cable route is short and there is marginal electromagnetic interference. Over longer distances
or with a high rate of electromagnetic interference, a double-screened cable of type LiYCY-CY should be
used.
Sensor FA 2 (3) x 0.25 mm²
Sensor FAR 3 (4) x 0.25 mm²
Max. permissible conductor resistance per strand is 25 Ohm.
Max. permissible operating capacity between 2 strands is 1.5 nF.
Sensor VA 3 x 0.25 mm2
Max. permissible conductor resistance per strand is 15 Ohm.
Conductor resistances for finely stranded conductors:
approx. 79 Ohm/km with wire cross section 0.25 mm2
approx. 39 Ohm/km with wire cross section 0.50 mm2
approx. 26 Ohm/km with wire cross section 0.75 mm2

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8Functional Description
UFA transducers are designed for connecting to vane wheel probes FA and FAR (directional sensing) and
vane wheel measuring tubes FA Di and FAR Di (directional sensing) for measuring flow velocity or flow rate
of air/gases and water/liquids.
UVA transducers are designed for connecting to vortex probes VA and vortex measuring tubes VA Di for
measuring the flow velocity or flow rate of air/gases.
The signal frequency proportional to the velocity generated from the flow sensor is converted to a linear
analog output signal 4-20 mA or 0-10 V. The analog terminal value is configurable. When logging direc-
tional sensing data the zero point can be selected in the middle of the analog range or directional sensing
takes place with the help of the relay output:
for FA and FAR*: 4 ... 20 mA = 0 ... x m/s (or m³/h)
for FAR: 4 ... 12 ... 20 mA = -x ... 0...+x m/s (or m³/h)
for VA: 4 ... 20 mA = 0 ... x m/s (or m³/h)
alternatively:
for FA and FAR*: 0 ... 10 V = 0 ... x m/s (or m³/h)
for FAR: 0 ... 5 ... 10 V = -x ... 0...+x m/s (or m³/h)
for VA: 0 ... 10 V = 0 ... x m/s (or m³/h)
* for FAR sensors for configuring the relay see under: ±direction of flow
The actual velocity or actual flow rate can be converted to standard velocity or standard flow rate by en-
tering the parameter for temperature and pressure.
A relay output (change-over contact) can be configured for 1 of 3 different functions:
1. as limit value for the flow velocity or the flow rate:
flow velocity < or = limit value: relay contact idle
flow velocity > limit value: relay contact in working position
2. as quantity pulse for quantity measurement:
max. pulse repetition frequency 1 Hz per unit of volume,
configurable, e.g. 1 pulse per 1, 10 or 100 (norm)-m³ or (norm)-litre
pulse duration 0.1 s (FAR sensors: configurable for '+' or '-' amounts)
3. as ±direction of flow ** (for FAR sensors only):
+direction: relay contact in idle
- direction: relay contact in in working position
** analog output (see above) is then absolute value of flow only, without direction
Self diagnosis according to NAMUR NE43:
For analog output 4 … 20 mA:
No error : analog output = 4 mA (flow velocity = 0)
or analog output > 4 mA (flow velocity > 0)
Error : analog output < 3.6 mA
For analog output 0 … 10 V:
No error : analog output = 0 V (flow velocity = 0)
or analog output > 0 V (flow velocity > 0)
Error : analog output < -0.2 V
Monitored: power supply, data logging, sensor interface, parameter settings (seeunder 18 Trouble-
shooting).
If an isolator/supply unit, e.g. LDX2, is used together with the UVA or UFA transducer, sensor monitoring
must be switched off (see under Fehler! Verweisquelle konnte nicht gefunden werden. Settings)

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PC serial port RS232
dient zur Änderung der Kalibrierdaten und Einstellparameter.
Remove cover.
Plug PC connector cable (optional) with RJ22 into the socket in the transducer (see Fig. 2).
Connect other end of cable to PC COM port.
If a USB connection is required, then an optional USB / RS232 interface converter must be inserted.
Changes to the settings can now take place after starting the PC programme UCOM (optional)
(see under Fehler! Verweisquelle konnte nicht gefunden werden. Settings).
9Settings
The following setting parameters can be read using the PC software UCOM and are also alterable.
The customer-specific settings are shown on the parameter print-out, which is included in the
documents.
Please find operation instructions PC software UCOM in document U385.
10 Performance Test
Sensor not connected
(pay attention to Fehler! Verweisquelle konnte nicht gefunden werden. Power supply)
(pay attention to 7.2.4 Analog output)
after connecting the supply voltage the green and yellow LED light up.
The analog output sends a value between 3.4 mA and 3.6 mA with output current or between –0.3 V and
–0.2 V with output voltage.
11 Initial Operation
Sensor connected
(pay attention to Fehler! Verweisquelle konnte nicht gefunden werden. Power supply)
(pay attention to 7.2.3 Sensor input)
(pay attention to 7.2.4 Analog output)
after connecting the supply voltage the green LED lights up and the yellow LED is off.
No flow at sensor: the green LED is permanently on, the analog output sends a value of 4 mA with output
current (or 12 mA depending on configuration with FAR sensors) or with output voltage a value of 0 V (or
5 V depending on configuration with FAR sensors, see under Fehler! Verweisquelle konnte nicht ge-
funden werden. Functional Description)
Flow at sensor: the green LED flashes, the analog output sends an analog value deviating from the zero
flow conditions (see above).
12 Operation
(see under Fehler! Verweisquelle konnte nicht gefunden werden. Operating Conditions)

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(see under 6.6 Electrical Data)
13 Shut-down, Dismantling
Before disconnecting the cable, please ensure that the supply voltage is switched off.
14 Inspection
Checking the LEDs, (see under Fehler! Verweisquelle konnte nicht gefunden werden. Functional De-
scription, Self diagnosis)
15 Maintenance
Only use cleaning agents which dry without leaving any residue and which are compatible with the hous-
ing materials.
Any repair work is to be carried out solely by Höntzsch GmbH & Co. KG.
16 Meaning of LEDs
LED green
LED yellow
Description
off
off
no power supply
on
off
power supply ok,
no error,
no flow
flashing
off
power supply ok,
no error,
flow detected
on
on
power supply ok,
parameter error and/or sensor error,
no flow
flashing
on
power supply ok,
parameter error,
flow detected
17 Calibration
The UFA and UVA transducers have an excellent long-term stability. However, it makes sense to have the
instruments calibrated at certain intervals. The period between two calibrations depends on the individual
operational conditions and the tolerable measurement error. Therefore, as a precaution, shorter calibration
cycles should be chosen at the beginning. As an indication and under 'normal' operating condi-
tions a calibration cycle of approx. 3-5 years applies.
Transducers must be returned to the manufacturer for calibration. Please refer to chapter 19!

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18 Troubleshooting
Fault
Cause
Troubleshooting
green LED off
no power supply
check connecting cable, measure voltage at
connecting terminals
transducer electronics faulty
return to factory
analog output =
error (< 3.6 mA
or < -0.2 V),
green LED on
cable break or short-circuit
check terminals; check cable for continuity and
replace if necessary
transducer or sensor electro-
nics faulty
return to factory
analog output = er-
ror (< 3.6 mA
or < -0.2 V),
green LED flashes
parameter error
check parameter with UCOM software, save new
checksum (or return to factory)
transducer electronics faulty
return to factory
analog output =
4 mA,
no measured value
sensor contaminated
clean sensor according to instructions
profile factor set at 0.000
set profile factor to relevant nominal diameter
and sensor type
measured value too
low
sensor contaminated
clean sensor according to instructions
profile factor setting too low
set profile factor to relevant nominal diameter
and sensor type
input/output section too
short
change sensor position; improve flow con-
ditions with a flow rectifier
rotational flow
reposition sensor in flow direction; install flow
rectifier
with vortex VA-sensors:
reduced acoustic coupling in
the sensor elements as a
result of intense vibration or
a powerful impact
return sensor to factory for performance test
burden at current output is
greater than specified in the
Technical Data Sheet. This
results in correct output val-
ues in the lower range and
no longer increasing output
values at the top end of the
measuring range
reduce burden resistance
incorrect scaling of analog
output
check setting and amend if necessary
measured value too
high
profile factor setting too
hogh
set profile factor to relevant nominal diameter
and sensor type
EMC problem
see reference to electromagnetic compatibility
(EMC)

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19 Returns
No special measures necessary for UFA and UVA transducers.
When returning sensors, these should be cleaned thoroughly according to the instructions. A hazard warn-
ing or declaration of no objection must be supplied for substances which have been in contact with the
sensor or possibly infiltrated the cavities in the sensor. If adhesion of hazardous substances cannot be
ruled out, then detailed safety measures to be taken when handling the equipment must be itemised.
20 Disposal
The customer should assume the duty to dispose of the equipment at his own expense and according to
statutory provisions (e.g. ElektroG in Germany).
21 Replacement Parts
1
1
2
Fig. 3: Fuse TR5
Fuse TR5 (2) is situated in the base behind the power
supply connecting terminals and is easily accessible
by loosening the screws (1) to remove the cover
plate:
for 230 V AC TR5-T 100 mA order no. e025/023
for 24 V DC TR5-T 500 mA order no. e025/024
for 12 V DC TR5-T 500 mA order no. e025/024
Always switch off before changing the fuse!

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22 Declaration of Conformity, Declaration of Incorporation
Waiblingen, 14.01.2021 Jürgen Lempp / Geschäftsführer
Höntzsch GmbH & Co. KG
Gottlieb-Daimler-Straße 37
D-71334 Waiblingen
Tel: +49 7151 / 17 16-0
E-Mail [email protected]
Internet www.hoentzsch.com
Subject to alteration
We, Höntzsch GmbH & Co. KG
Gottlieb-Daimler-Str. 37
D-71334 Waiblingen
bearing sole responsibility, hereby declare that the product
Transducer UFA / UVA in AS102 Housing
referred to in this declaration, is in conformity with the following standards or norma-
tive documents:
Provisions of the Directive
Reference and date of issue
2014/30/EU: Electromagnetic Compatibility
EN 61000-6-4
EN 61000-6-2
2014/68/EU: Pressure Equipment Directive
2006/42/EC: Safety of Machinery
Safety requirements for electrical equipment
for measurement, control, and laboratory use
EN 61010