Hontzsch flowtherm Ex User manual

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Operating Instructions
flowtherm Ex
Software status from 1.05
Multifunctional handheld unit with data logger for measuring flow rate,
flow velocity, temperature, pressure and other variables
in explosive atmospheres

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Overview and brief introduction of controls and connections
Please ensure that the correct sensor (FA, VA oder TA) is selected (see under 5.3.19.1)!
Thermal sensors TA, TADi
Always connect just one sensor at a time!
Vane wheel sensors FA(R), FT,
FA(R)Di or vortex sensors VA, VAT, VADi
or temperature sensors Pt100
Analog input 4-20 mA
Analog input 0-10 V
Connector socket cap
Close any connections not in use!
Measured value display
Input channel 1: name/unit
value
Input channel 2: name/unit
value
Input channel 3: name/unit
value
Function keys Designation
Function keys
, , with variable
functions depending on
operation menu
USB connection type 'B'
for connecting to PC or
adapter plug
Switch off
Switch on
Input channel and
status info
Battery compartment
on the rear for 4 Batteries
Mignon (AA)
Arrow keys (measured values
display)
,: shift between
1, 2 und 3 values
, : scroll the 3 values
With display of 1 and 2
values
Holding magnet
For fixing the unit to
metal surfaces

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Contents
1General Information ...................................................................................................................4
2Scope of Delivery.......................................................................................................................4
2.1 Description, type plate.......................................................................................................4
3Technical Specifications ..............................................................................................................6
3.1 Operating conditions..........................................................................................................6
3.2 Housing and connection .....................................................................................................6
3.3 Electrical data...................................................................................................................6
3.4 Measurement uncertainty...................................................................................................7
4Initial Operation / Startup ...........................................................................................................7
4.1 Wiring diagram for the 8-pin connector plug .........................................................................7
4.2 Wiring diagrams for the 12-pin connector plug......................................................................8
4.2.1 Analog input 4-20 mA.............................................................................................8
4.2.2 Analog input 4-20 mA.............................................................................................8
4.2.3 Analog input 0-10 V................................................................................................8
5Operation .................................................................................................................................9
5.1 Key functions....................................................................................................................9
5.2 Setup menu after switch on..............................................................................................11
5.3 Parameter settings ..........................................................................................................13
5.3.1 FA - Basic settings................................................................................................13
5.3.2 FA - Measurement settings .................................................................................... 14
5.3.3 FA - Density correction .........................................................................................15
5.3.4 FA- Operating conditions .......................................................................................16
5.3.5 FA –Standard conditions ...................................................................................... 16
5.3.6 FA –Pairs of values ..............................................................................................16
5.3.7 VA –Basic settings...............................................................................................17
5.3.8 VA - Measurement settings.................................................................................... 17
5.3.9 VA –Operating conditions ..................................................................................... 18
5.3.10 VA –Standard conditions ...................................................................................... 18
5.3.11 VA –Pairs of values.............................................................................................. 19
5.3.12 TA –Basic settings ............................................................................................... 19
5.3.13 TA - Measurement settings....................................................................................20
5.3.14 TA –Standard conditions ...................................................................................... 21
5.3.15 TA - Pairs of values .............................................................................................. 21
5.3.16 PT100 - Unit ........................................................................................................21
5.3.17 Analog input ........................................................................................................22
5.3.18 Counter ..............................................................................................................22
5.3.19 Display ...............................................................................................................22
5.3.20 Long-term measurement....................................................................................... 24
5.3.21 Device ................................................................................................................ 26
5.3.22 Factory settings ................................................................................................... 26
5.3.23 Data logger ......................................................................................................... 26
5.3.24 Device status.......................................................................................................27
5.3.25 Profiles ............................................................................................................... 28
5.3.26 Key F3 - LM-Start.................................................................................................28
5.3.27 Key 4 Switch off / OFF (reset)................................................................................28
6Troubleshooting....................................................................................................................... 29
7Replacement Parts ................................................................................................................... 29
8Instruction Manual category 2G handheld unit flowtherm Ex .........................................................30
8.1 Apparatus ......................................................................................................................30
8.2 Safety Precautions .......................................................................................................... 30
8.2.1 General...............................................................................................................30
8.2.2 Use in explosive atmospheres ................................................................................ 30
8.3 Technical Data ................................................................................................................32
8.3.1 Elektrical Data ..................................................................................................... 32
8.4 Installation.....................................................................................................................33
8.5 Maintenance ...................................................................................................................33
9Declaration of conformity handheld unit flowtherm Ex Category 2G................................................ 34

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1General Information
-Read the Operating Instructions carefully before initial operation.
-Failure to observe these Operating Instructions and technical rules will result in danger to life, risk of un-
jury and damage to material or property.
-In addition, improper use, modifications or damage to the device will result in loss of warranty and liabil-
ity claims.
-Observe general information as well as the safety precautions included in various sections of these
Operating Instructions.
-Use only the dedicated adapter plug for the mains supply.
2Scope of Delivery
-Handheld unit flowtherm Ex
-Operating Instructions and Data Sheet flowtherm Ex, Instruction Manual and Declaration of Conformity
flowtherm Ex
-FA, VA or TA sensor(s) as ordered
-relevant Data Sheet for above
-other sensors such as Pt100, if ordered
-accessories for sensors, e.g. extension rod for FA sensor, if ordered
-CD-ROM with PC software HLOG II and USB cable (optional)
-adapter plug and USB cable (optional)
-various connection and extension cables, connectors (optional)
-carrying case (optional)
Please check that everything listed in the Delivery Note / Technical Data Sheet is included in the delivery.
2.1 Description, type plate
The flowtherm Ex is a multifunctional handheld unit with data logger for measuring and storing flow rate,
flow velocity, temperature, pressure and other variables, insofar as they are measurable / deducible with
connectable sensors:
Outside the explosive atmosphere, this storage can be read out via USB socket.
The device may be installed in explosive atmospheres group IIC (gas) in which the ambient temperature
range of -10°C to +50°C is not exceeded. It could be used up to the temperature range of the tempera-
ture class T4.
Sensors that can be connected (observe section 8):
-vane wheel FA, FAR, FT, FADi, FAR-Di
-vortex VA, VAT, VADi
-thermal TA10, TADi
-temperature Pt100
-2-wire 4-20 mA max. 12 V supply
-3- or 4-wire 4-20 mA output and max. 12 V supply
-3- or 4-wire 0-10 V output and max. 12 V supply

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The following type plate is found on the back of the unit:
Description of type plate specifications:
1: Description
see Section 2.1
2: Unit and serial no.
3: Year of production
4: Notified body
5: Marking for use in Ex category 2G
see General Informations Section 1
see Instruction Manual Ex Category 2G Section 8
see Declaration of conformity Section 9
6: EC-type examination certificate
7: Operating conditions
see General Informations Section 1
see Operating conditions Section 3.1
see Safety Precautions Section 8.2
8: USB connection
see Electrical data Section 3.2 und 3.3
see Connector sockets page 2
see Safety Precautions Section 8.2
9: Warnings
see General Informations Section 1
see Technical specifications Section 3
see Safety Precautions Section 8.2
10: Exclusively battery type
see General Informations Section 1
see Elektrical data Section 3.3
see Safety Precautions Section 8.2
1
4
6
7
7
8
9
2
3
5
10

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3Technical Specifications
3.1 Operating conditions
Ambient temperature of
connection housing in service : -10 ... +50 °C
Type of protection : IP65
: Intrinsic safety (ib) EN 60079-11
3.2 Housing and connection
Type of protection : Intrinsic Safety (ib) EN 60079-11 and IP65 with battery compartment
cover and sensor plug screwed on tightly, connector sockets not in use
firmly capped, and USB connection cover tightly sealed
Material : electrically conductive ABS plastic
External measurements, weight : W/H/L = 96/42/197 mm, approx. 590 g
Connections : 5-pin connector plug for thermal sensors
8-pin connector plug for vane wheel, vortex or temperature sensors
12-pin connector plug for analog inputs or additional sensors
USB for data logger readout, configuration and
external power supply via PC or mains adapter
3.3 Electrical data
Power supply : via 4 alkaline manganese batteries
(exclusively DURACELL Simply MN1500 AA LR6 1.5V)
Open the battery compartment with a screw driver. Always change all 4 batteries at the same time,
checking for correct polarity. To close the compartment press it firmly in the seal (in the direction of the
connector sockets) and screw down tightly.
Work on the device may only be carriedout in non-explosive atmospheres. Please observe Safety Precau-
tions Section 8.2.
Mains supply : via USB connection with PC or adapter plug (permitted only outside ex-
plosive atmospheres); input voltage Um 6 VDC
Supply current : via USB connection not less than 300 mA
Analog input 4-20 mA : for connection of sensor in 2-wire system with 12 V;
allocation of unit, initial value and final value adjustable
Analog input 0-10 V : for connection of sensors with voltage output;
input resistance 1 MOhm
12 V power supply for sensors, (25 mA);
allocation of unit, initial value and final value adjustable

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2
8
6 7
4
1
5
3
3.4 Measurement uncertainty
Input FA : +/- 1 Hz
Input VA : +/- 1 Hz
Input TA : +/- (0.7 % of measured value + 0.02 % FS)
Temperature display : +/- 1 Kelvin
Analog input 0-10 V : +/- (0.3 % of measured value + 0.02 % FS)
Analog input 4-20 mA : +/- (0.3 % of measured value + 0.02 % FS)
Input Pt100 : +/- 0.2 Kelvin
All values apply for a set damping rate of 30 seconds during measurement. In addition, the measurement
uncertainty of the utilised sensors must be taken into consideration.
4Initial Operation / Startup
For installation and operation of the system especially in explosive atmospheres category 2G the national
regulations currently in force, the recognised standards of good practice and these Operating Instructions
apply.
Always make sure that the connector sockets not in use are firmly capped, the sensor plug is screwed on
tightly and the USB connection cover is tightly sealed.
4.1 Wiring diagram for the 8-pin connector plug
Electrical connection must be carried out according to the relevant wiring diagram.
Incorrect connection can cause serious damage to the electronics.
Wiring diagram with view of solder contacts:
Pin assignment
Pin 1: v/FA+FAR signal 1 For v/VA signal F
Pin 2: ground G
Pin 3: Pt100
Pin 4: Pt100
Pin 5: Pt100
Pin 6: Pt100
Pin 7: v/FAR signal 2 F
Pin 8: V+
Housing: shield

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4.2 Wiring diagrams for the 12-pin connector plug
Electrical connection must be carried out according to the relevant wiring diagram..
Incorrect connection can cause serious damage to the electronics.
Wiring diagrams with view of solder contacts:
4.2.1 Analog input 4-20 mA
(2-wire system current
for 12V supply)
A = power supply + (12V)
F= power supply –(GND)
plug shell = shielding
4.2.2 Analog input 4-20 mA
(3 or 4-wire system current
for 12V supply)
A = power supply + (12V)
B = power supply –(GND_D)
F= signal +
H = signal –(GND_A)
plug shell = shielding
4.2.3 Analog input 0-10 V
(3 or 4-wire system voltage
for 12V supply)
A = power supply + (12V)
B = power supply –(GND_D)
G = signal +
H = signal –(GND_A)
plug shell = shielding

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5Operation
5.1 Key functions
Switch on: with the key (also symbol)
hold down until text appears in the display.
Switch off: with the key (also symbol)
press the key for 1 second until the display goes off.
Control keys: , and are keys with variable function, identified in the bottom
row of the display depending on user level.
Arrow keys: In measured value display / view after switch on:
during measured value display the arrow keys have the following function:
and : shift the display. Definition whether the values from 1, 2 or 3
input channels are displayed simultaneously. Depending on selection, the
character size of the display value changes.
and : is the display so set that only measured values from 1 or 2
input channels are displayed simultaneously, then these keys can be used for scroll-
ing through the input channels.
In the menus and input boxes:
, , and are control keys for navigating within the various menus
and menu levels.
ok key: In the measured value display / view after switch on:
is a control key for switching the display light on or off.
In the menus and input boxes:
is a control key to select and save.

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Examples for key functions in the menus:
Menu selection list:
With up or down in the list; the selected element
is highlighted.
With a menu level higher (backwards).
With a menu level lower (forwards) = select.
With select = a menu level lower (forwards).
With return to measured value display.
With switch off.
Parameter value selection window:
With new selection element; the selected element
flashes (here "mn").
With select and save and return to selection list.
With return to measured value display without saving.
With return to selection list without saving.
With switch off.
Parameter value digit (numeric/text) setting:
With change digit; the selected and editable
digit flashes (here "1").
With 1 digit to the left or right respectively.
With select and save and return to selection list.
With return to measured value display without saving.
With return to selection list without saving.
With switch off.