Hontzsch UVA User manual

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U326_UVAintAS102_B_e_210316 1/15
Operating Instructions
Transducer UVA
integrated in the connection housing AS102 of the
vortex probes VA40, VAT40 and
vortex measuring tubes VA Di
Inhaltsverzeichnis
1Safety Symbols .........................................................................................................................2
2Safety Instructions.....................................................................................................................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 Housing and Connectors ....................................................................................................5
6.5 Electrical Data ..................................................................................................................5
6.6 Measurement Uncertainty ..................................................................................................6
7Installation................................................................................................................................6
7.1 Block Diagram ..................................................................................................................6
7.2 Wiring Diagrams ...............................................................................................................6
7.2.1 Shielding contact at cable bush ................................................................................7
7.2.2 Power supply .........................................................................................................7
7.2.3 Analog output v .....................................................................................................7
7.2.4 Relay output..........................................................................................................8
7.2.5 RS232 Interface.....................................................................................................8
7.2.6 LCD display in housing cover (optional).....................................................................9
7.2.7 Analog output t (temp) (optional)...........................................................................9
8Funktionsbeschreibung .............................................................................................................10
9Settings..................................................................................................................................11
10 Initial Operation.......................................................................................................................11
11 Operation ...............................................................................................................................12
12 Shut-down, Dismantling ...........................................................................................................12
13 Inspection...............................................................................................................................12
14 Maintenance............................................................................................................................12
15 Meaning of LEDs ......................................................................................................................12
16 Troubleshooting.......................................................................................................................13
17 Returns ..................................................................................................................................14
18 Disposal..................................................................................................................................14
19 Replacement Parts ...................................................................................................................14
20 Declaration of Conformity, Declaration of Incorporation ................................................................15

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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 Instructions
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)
Danger when installing the sensors in pressurized pipelines:
-sensors for use in pressurized pipelines are to be inserted or retracted only in depressurized con-
ditions; non-observance may result in serious injuries to personnel
-when installing or removing under pressure, the appropriate protective equipment must be used, e.g.
ball valve and probe guide pieces with chain guard or spindle probe guide pieces

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3Intended Use
The transducer UVA is an instruments for measuring flow velocity and flow rate:
UVA is for use with vortex flow sensors VA40 and measuring tubes VA Di. These instruments are designed
for industrial applications. 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 UVA integrated in the connection housing of the vortex sensor VA
-Operating Instructions U326
-Data sheet vortex flow sensor with integrated transducer UVA
-CD-ROM with PC configuration software UCOM (optional)
-Interface cable RS232 for PC connection COM interface (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
Remove cover to reveal type plate:
VA-Di Flow Sensor : measuring tube VA Di
VAT-Di Flow Sensor : measuring tube VA Di with temperature measurement
VA40 Flow Sensor : probe VA40
VAT40 Flow Sensor : probe VA40 with integrated temperature measurement
S/N : serial no.
Di : inside diamter Di of measuring tube
(VA Di and VAT Di only)
PS : max. permissible pressure
FLOW TRANSDUCER : integrated transducer
Type : UVA (transducer for vortex sensors VA)
Power : supply voltage 24 VDC = 24 V direct voltage
12 VDC = 12 V direct voltage
Output : 4-20 mA = current output 4-20 mA
0-10 V = voltage output 0-10V
RS232 : RJ22 plug
6Technical Specifications
6.1 Conformity with Standards
The transducer UVA is manufactured according to the best available technology, is safe and reliable and
comply with the relevant regulations, EU directives and standards.
6.2 Storage Conditions
Storage conditions: -30 bis +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
6.4 Housing and Connectors
protection : housing IP65
material : aluminium
external dimensions : L/W/H = 150/100/80 mm
bush : metallic screwed cable glands
for cable diameter 5 ... 10 mm
with contacting of the shielding
connections : '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.
6.5 Electrical Data
Supply voltage,
mains supply : 24 V DC (20 ... 27 V DC), power < 5 W
The mains supply is electrically isolated from the UVA outputs.
UVA analog output v : 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 normally open contact), max. 300 mA / 27 V DC,
configurable as limit value v
or quantity pulse (see under 8 Functional Description)
RS232 Schnittstelle : for connection with PC programme UCOM
(see under 8 Functional Description)
9600 Baud, 8Bit, no parity, 2 stop bits, Xon/Xoff
Connection : flat ribbon cable with 10-pin cable socket
for optional LCD display Do not plug in or out when live!
Optional analog output t : 4 ... 20 mA = x ... y °C

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burden max. 200 Ohm
x °C fixed preset initial value for measuring temperature
y °C fixed preset terminal value for measuring temperature
(see accompanying documentation)
6.6 Measurement Uncertainty
Recording the measurement frequency (at 1000 Hz) : <0.1%
Analog output (terminal value) : <0.15%
Linearity error : <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.
7.1 Block Diagram
(Terminals 10 ... 14 are not populated and only accessible internally)
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.
UVA integrated

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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
7.2.2 Power supply
Before connecting please check that the power supply is within the specification. Remove the cover of the
integrated UVA to reveal the type plate with the relevant information.
7.2.3 Analog output v
P = protective earth
4-20 mA
Resistance max. 400 Ohm
0-10 V
Impedance 1 kOhm

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Remove the cover of the integrated UVA to reveal the type plate with the relevant information regarding
analog output.
The terminal value of the analog output can be parameterised with the PC software UCOM via the RS232
interface. The customer-specific programmed value can be found in the accompanying documents.
7.2.4 Relay output
The normally open contact of the relay is shown in rest position (relay coil off).
The function of the relay output and the corresponding setting parameter are parameterable with the PC
software UCOM via the RS232 interface. The customer-specific settings are in the parameter printout.
7.2.5 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.
Fig. 1: PC connection with RJ22 plug with open cover

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7.2.6 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).
7.2.7 Analog output t (temp) (optional)
The initial value x °C (4 mA) and the terminal value y °C (20 mA) are permanent hardware settings and
recorded in the Technical Data Sheet.
The negative terminal of the analog output t (terminal 9) is on the same potential as the negative terminal
of the analog output v (terminal 5).
The analog output signal t is not used in the UVA (e.g. for conversion to standard values).
Abb. 2: LCD display connection with cover open
4-20 mA
Resistance max. 200 Ohm

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8Funktionsbeschreibung
UVA transducers are designed for connection of vortex probes VA40 and vortex measuring tubes VA Di for
measuring flow velocity or flow rate of air/gases.
The signal frequency 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 parameterisable.
Current output : 4 ... 20 mA = 0 ... x m/s (or m³/h)
alternatively:
Voltage output : 0 ... 10 V = 0 ... x m/s (or m³/h)
The actual velocity or actual flow rate can converted to standard velocity or standard volume flow by en-
tering the parameter 'temperature' and 'pressure' .
A relay output (normally open contact) can be parameterised for 1 of 2 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, pulse duration 0.5 s,
e.g. 1 pulse per 1, 10 or 100 m³ or 1, 10 or 100 litre respectively
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
Monitoring of power supply, data logging, sensor interface, parameter settings (see under 16
Troubleshooting)
PC serial port RS232
for changing calibration data and setting parameters.
Remove cover.
Plug PC connector cable (optional) with RJ22 into the socket in the UVA (see Fig. 1, under 7.2.5 RS232
Interface).
Connect other end of cable to RS232 PC socket.
If a USB connection is required, then an optional USB / RS232 interface converter must be inserted.
Changes to the setting can now take place after starting the PC programme UCOM (optional)
(see under Fehler! Verweisquelle konnte nicht gefunden werden. Settings).

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Optional LCD display in housing cover:
2 x 16 digit, character height 5.5 mm.
Display line 1 : instantaneous value velocity or flow rate.
Display line 2 : 'quantity counter' or 'error code'.
Configuration (see Fig. 2, see under 7.2.6 LCD display in housing cover) via 2 jumper wrap connectors ST1
and ST2.
Display line 1:
ST1 = m/s and ST2 = any: velocity in (N)m/s *
ST1 = m³/h (lt/h) and ST2 = A: flow rate in (N)m³/h
ST1 = m³/h (lt/h) and ST2 = B: flow rate in (N)lt/h **
* standard values (N) only when parameter 'switching v/NV' =1 (see under Fehler! Verweisquelle
konnte nicht gefunden werden. Settings)
** only when diameter Di < 75.0 mm, otherwise display in (N)m³/h
Display line 2:
Quantity counter in m³ with 0 ... 3 decimal places
(see under Fehler! Verweisquelle konnte nicht gefunden werden. Settings; parameter 'switching
pulse m³(cbm) / l (litre)' and
parameter 'm³ (cbm) / l (litre) per pulse' and
parameter 'decimal places quantity display')
with error : error 01 = parameter error
error 02 = sensor error
(see under 16: Troubleshooting)
Reset button in cover: see Fig. 2, under 7.2.6
Reset the quantity counter by pressing the reset button for more than 3 seconds.
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 Initial Operation
(Pay attention to 7.2.2 Power supply)
(Pay attention to 7.2.3 Analog output v)
After connecting the supply voltage the green LED lights up, the yellow LED is switched off.
No flow at sensor: the green LED is permanently on, the analog output supplies a value of 4 mA at flow
output or at voltage output a value of 0 V (see under 8 Functional Description)
Flow at sensor: the green LED flashes, the analog output supplies an analog value other than the given
values of the zero flow conditions (see above).

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11 Operation
(see under Fehler! Verweisquelle konnte nicht gefunden werden. Operationg conditions)
(see under 6.5 Electrical Data)
12 Shut-down, Dismantling
Before disconnecting the cable, please ensure that the supply voltage is switched off.
13 Inspection
see under 8Functional Description, Self diagnosis
14 Maintenance
Only use cleaning agents which dry without leaving any residue and which are compatible with the housing
materials.
Any repair work is to be carried out solely by Höntzsch GmbH & Co. KG.
15 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

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16 Troubleshooting
Störung
Ursache
Störungsbehebung
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
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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17 Returns
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.
18 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).
19 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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20 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
Änderungen vorbehalten
We Höntzsch GmbH & Co. KG
Gottlieb-Daimler-Str. 37
D-71334 Waiblingen
bearing sole responsibility, hereby declare that the product
Transducer 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