GHM GREISINGER GIA 0420 ex Series User manual

E36.0.01.6C-01
GHM GROUP - Greisinger
GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY
Tel.: [phone] | [e-mail] | www.greisinger.de
Installation and operating manual
Universal display for
4-20 mA - transmitter
ab Version 1.0
GIA 0420 ... - ex

Please read these instructions carefully before use!
WEEE-Reg.-Nr. DE 93889386

Please consider the safety instructions!

Please keep for future reference!
0158
GIA … VOT - ex
GIA … WKT - ex
GIA … VO - ex

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 2 of 20
Index
1GENERAL NOTE ......................................................................................................................................................2
2DESIGNATED USE...................................................................................................................................................3
2.1 INTENDED USE......................................................................................................................................................3
2.2 SAFETY SIGNS AND SYMBOLS.................................................................................................................................3
2.3 SKILLED PERSONNEL.............................................................................................................................................3
2.4 SAFETY GUIDELINES..............................................................................................................................................4
2.5 EX PROTECTION....................................................................................................................................................5
3PRODUCT DESCRIPTION........................................................................................................................................5
3.1 SCOPE OF SUPPLY ................................................................................................................................................5
3.2 FUNCTION DESCRIPTION........................................................................................................................................5
3.3 IDENTIFICATION.....................................................................................................................................................6
3.4 DISPLAY AND OPERATING ELEMENTS......................................................................................................................6
4ELECTRIC CONNECTION........................................................................................................................................7
4.1 GIA …WK(T) -EX ...............................................................................................................................................7
4.1.1 Terminal assignment.................................................................................................................7
4.1.2 Connection example for optionally switching output: .................................................................7
4.1.3 GIA 0420 WK(T) - ex / S1: Switching of a alarm device...........................................................7
4.2 GIA …VO(T) -EX................................................................................................................................................8
4.2.1 Assignment of the angle-type plug ............................................................................................8
4.2.2 Adjustment of the connections of the GIA 0420 VO(T) - ex: ......................................................8
4.2.3 Example assignment for optionally switching output:.................................................................9
4.2.4 GIA 0420 VO(T) - ex / S1: Switching of a alarm device ...........................................................9
5CONFIGURATION...................................................................................................................................................10
5.1 ADDITIONAL PARAMETER FOR OPTION /S1 ...........................................................................................................11
6SELECTION OF SWITCHING AND ALARM POINTS ...........................................................................................12
7OFFSET AND SLOPE ADJUSTMENT...................................................................................................................13
8MIN-/MAX- VALUE MEMORY ................................................................................................................................13
9ERROR CODES ......................................................................................................................................................14
10 SPECIFICATIONS ...............................................................................................................................................15
11 DECOMMISSIONING, RESHIPMENT AND DISPOSAL ....................................................................................16
11.1 RESHIPMENT...................................................................................................................................................16
11.2 DISPOSAL INSTRUCTIONS.................................................................................................................................16
ADDENDUM A: EC –DECLARATION OF CONFORMITY...........................................................................................17
ADDENDUM B: EC-TYPE EXAMINATION CERTIFICATE ..........................................................................................18
1 General note
Read this document carefully and get used to the operation of the device before you use it. Keep this document within
easy reach near the device for consulting in case of doubt.

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 3 of 20
2 Designated Use
2.1 Intended Use
The GIA 0420 VO(T) - ex and GIA 0420 WK(T) - ex are microprocessor controlled display devices for 4..20 mA input
signals.
The device is suitable for use in potentially explosive atmospheres of group II, zone 1 and 2, temperature class T4 to
T1 (according to IEC 60079-0).
The device must not be used in hazardous areas other than those mentioned above, in particular not in underground
mines as well as in potentially explosive dust atmospheres.It should also be noted that the device is not suitable for
applications which require the temperature classes T6 or T5.
The GIA 0420 ... - ex is optionally available with a electrically isolated switching output. The output switch and the
switching device must be supplied from the same intrinsically save circuit as the display GIA 0420 ... - ex.
The device may only be operated in combination with Ex-approved transmitters and intrinsically safe circuits in accor-
dance with the connection data. The total capacitance and inductance of device GIA 0420 ... - ex, intrinsically safe
transmitter, switching devices and wiring may not exceed the allowable for the intrinsically save circuit totals.
To configure GIA 0420 VO - ex and GIA 0420 WK - ex the cover has to be removed to get access to the needed but-
tons. This may not be done in hazardous areas.
If the GIA 0420 ... - ex was operated on non-intrinsic circuits or if the permissible load values were exceeded, the de-
vice must not be used again in Ex applications.
Only technically qualified persons are permitted to carry out installation, commissioning, operation and decommis-
sioning. The qualified personnel must have carefully read and understood the operating manual before beginning
any work.
The liability and warranty of the manufacturer for damages and consequential damages are voided with misuse, dis-
regard of this operating manual, assignment of inadequately qualified technical personnel and arbitrary modifications
of the product.
2.2 Safety signs and symbols
Warnings are labelled in this document with the followings signs:
Caution!
This symbol warns of imminent danger, death, serious injuries and significant damage to
property at non-observance
Caution!
This symbol indicates a potentially dangerous situation in explosion-prone areas that can
result in death or severe injuries if it is not avoided.
Attention!
This symbol warns of possible dangers or dangerous situations which can provoke damage
to the device or environment at non-observance.
Note!
This symbol point out processes which can indirectly influence operation or provoke
unforeseen reactions at non-observance.
2.3 Skilled personnel
are persons who are familiar with the set-up, installation, commissioning and operation of the product and have
appropriate qualification for their work. For example:
•Training or instruction and/or authorisation, power circuits and devices/systems in accordance with the standards
of safety for activation, deactivation, disconnection, earthing and identification.
•Training or instruction in accordance with the standard of safety technology for care and use of suitable safety
equipment.
•Knowledge about the installation of devices in explosion-prone areas.

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 4 of 20
2.4 Safety guidelines
This device has been designed and tested in accordance with the safety regulations for electronic devices. However,
its trouble-free operation and reliability cannot be guaranteed unless the standard safety measures and special safety
advises given in this manual will be adhered to when using the device.
1.
Requirements of Directive 2014/34/EU (ATEX) and IECex must be observed
The respective national regulations for Ex use must also be complied with (e.g. EN 60079-10
and EN 60079-14).
2.
Install the displaying device according to the manufacturer's specifications and the valid
standards and regulations.
3.
The device may be connected to approved intrinsically safe circuits with his maximum values.
4.
For units with optional output switch, the output switch and the switching device must be supplied
from the same intrinsically sage circuit as the GIA …!
Only approved intrinsically safe switching devices may be used which correspond to the specified
maximum values of the circuit. The total capacitance and inductance of the devices GIA … (incl.
switching output) and the switching devices, including the connection cable values, may not
exceed the allowable for the intrinsically safe circuit totals. If concentrated inductances and
capacitances exist, the manufacturer must be consulted for permission.
5.
Modifications or repairs of the device may not be performed by the customer.
For maintenance or repair the device must be sent to the manufacturer.
6.
The opening of the devices is only permitted outside the hazardous area.
7.
To configure GIA ... VO-ex and GIA ... WK-ex the cover has to be carefully removed to get
access to the needed buttons. Exposed parts must not be damaged!
This has to be done only by trained personnel and with consideration of adequate ESD safety
precautions.
Take care to insert the sealing correctly when reassemble the cover.
8.
The devices GIA ... VO(T) - ex meet the requirements of intrinsic safety only after angel plugs,
which are appropriate to the required IP protection degree, are connected. The devices shall be
installed in places that are protected against external damage.
9.
The devices back side (GIA ... VO(T) - ex and GIA … WK - ex) may not be cleaned with a cloth or
other means, which can generate an electrostatic charge.
10.
Trouble-free operation and reliability of the device can only be guaranteed if the device is not
subjected to any other climatic conditions than those stated under “Specification”.
11.
When connecting the device to other devices (e.g. PC) the interconnection has to be designed
most thoroughly as internal connections in third-party devices (e.g. connection GND with
protective earth) may lead to undesired voltage potentials.
12.
If there is a risk whatsoever involved in running it, the device has to be switched off immediately
and to be marked accordingly to avoid re-starting.
Operator safety may be a risk if:
- there is visible damage to the device.
- the device is not working as specified.
- the device has been stored under unsuitable conditions for a longer time.
In case of doubt, please return device to manufacturer for repair or maintenance.
13.
Do not use these products as safety or emergency stop devices or in any other application where
failure of the product could result in personal injury or material damage.
Failure to comply with these instructions could result in death or serious injury and material
damage.

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 5 of 20
2.5 Ex protection
1. The device may be connected to approved intrinsically safe circuits with the following maximum values:
GIA 0420 … - ex:
Ui = 28 V DC
Ii = 100 mA
Pi = 1.2 W
Ci < 13 nF
Li = ~ 0 µH
Additional for the switching output (only at option “switching output”)
Ci < 4.5 nF
Li = ~ 0 µH
3 Product description
3.1 Scope of supply
display device
each 1 erection crew M3 x 68, M3 x 75 (only for GIA ... VO)
mounting and operating manual
3.2 Function description
The GIA 0420 VO(T) - ex and GIA 0420 WK(T) - ex are microprocessor controlled display devices.
GIA … VO - ex
GIA … VOT - ex
GIA … WK - ex
GIA … WKT - ex
The different design types of the device have an input for:
- standard signal 4 –20 mA
The measuring value is displayed on a 4-digit LCD display with max. display area ranging from -1999 to +9999 digits.
The device optionally features a switching output (NPN-output) which can be configured as 2-point controller or min-
/max alarm. The state of the output is displayed with an arrow at the LCD.
The GIA 0420 … is designed for the connection of any measuring transducers (with a 4 to 20 mA output).
This design type doesn't need an auxiliary supply as it is supplied by the measuring current.
Parameter and limit values are entered via three keys which are accessible after removal of the cover (design type VO
and WK).
Devices of the design type VOT and WKT have that keys freely accessible at top of the device.
The operating range of the display device can be directly adjusted to the transmitter without any additional
accessories by simply entering the maximum and minimum measuring range limits as well as the decimal point
position.
All programmable parameters of the device are saved in an EEProm. In case of a current failure they will remain there
for at least 10 years. The device is equipped with a self-diagnosis system continuously monitoring the essential parts
of the device for their perfect functioning. Both the self-diagnosis and the measuring sensor monitoring for values
exceeding or falling below permissible limits ensure maximum operational reliability of the device.
However, prior to you starting your operation make sure to configurate the device for your application.
Please also refer to chapter "Configuration".

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 6 of 20
3.3 Identification
Examples for type plates









Device type

Variante code

Approval number

Ex identification

Code for month/year of manufacture: MY
M: A = January, B = February, ..., L = December
Y: Q = 2016, R = 2017, S = 2018,..., Z = 2025
(Example: CR = March 2017)

Serial number


Information to measuring input (refer to chap. 10)

Information to assignment (refer to chap. 4)
Disposal note (refer to chap. 11.2)
  
Please refer to manual:
Read the mounting- and operating manual carefully,
before you connect and use the device
3.4 Display and operating elements
Display for the state of the switching output
Main display
Button 1, >2s: activates menu "switching points ..." (refer to chap.6)
(only available for devices with option S1)
In menu: save value or step to next parameter
Button 2, short display max. value
Button 2, >2s: activates configuration menu (refer to chap. 0)
Button 2 + 3, >2s: reset min-/max. value
In menu: press short= increase value.
press long = roll-function with overflow-function.*)
Button 3, short display min. value
Button 2, >2s: activates offset/slope menu " (refer to chap. 7)
Button 2 + 3, >2s: reset min-/max. value
In menu: press short= increase value.
press long = roll-function with overflow-function.*)
*) The input is made with the buttons 2 and 3. When pressing the button once the value will be raised (button 2) by
one or lowered (button 3) by one.
When holding the button pressed for longer than 1 sec. the value starts counting up or down, the counting speed
will be raised after a short period of time.
The device also features a ‘overflow-function‘, when reaching the upper limit of the range, the device switches to
the lower limit, vice versa.

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 7 of 20
4 Electric connection
4.1 GIA … WK(T) - ex
The connection of the GIA ... WK - ex occurs via 2- or 4-wire connection cable.
Supply voltage: device takes power from measuring current
Electric connection and commissioning of the device must be carried out by trained and skilled personnel.
Wrong connection may lead to the destruction of the display device, in which case we cannot assume any warranty!
! Mind the maximum input current rating of 40mA under any circumstances !
4.1.1 Terminal assignment
connection
number
wire colour
GIA 0420 WK(T) - ex
GIA 0420 WK(T) - ex / S1
(with switching output)
1
white
signal +
signal +
2
brown
signal -
signal -
3
green
---
switching output +
4
yellow
---
switching output -
4.1.2 Connection example for optionally switching output:
Please note: The max. permitted voltage and switching current of the switching output must not be exceeded (even
not for a short time).
Attention: The measuring and switching branches have to be supplied by the same intrinsically safe current
circuit. The total capacity and inductivity of GIA..., intrinsically sage transducer, intrinsically safe
switching device and cabling have to meet the limit values of the supply device.
Example for permitted connection values of switching devices/cabling if the universal isolating amplifier
ST 500 Ex - 10 - .. and the 4-20mA transducer IS-20 S or GITT 01 - ex is used:
Connection values of the ST 500 for ia/IIC: Co = 47 nF, Lo = 2 mH
for ia/IIB: Co = 370 nF, Lo = 15 mH
Pressure transmitter
IS-20 S
Temperature transmitter
GITT 01 - ex
Connection values transmitter :
Ci < 22 nF, Li = 0 mH
Ci = 0 nF, Li = 0 mH
Remaining values for
switching device/cabling if
GIA 0420 is used:
for ia/IIC: Ci < 7.5 nF (47 nF –(13 + 4.5 + 22) nF)
Li < 2 mH (2 mH –(0 + 0) mH)
for ia/IIB: Ci < 330 nF (370 nF –(13 + 4.5 + 22) nF)
Li < 15 mH (15 mH –(0 + 0) mH)
for ia/IIC: Ci < 29.5 nF (47 nF –(13 + 4.5 + 0) nF)
Li < 2 mH (2 mH –(0 + 0) mH)
for ia/IIB: Ci < 352 nF (370 nF –(13 + 4.5 + 0) nF)
Li < 15 mH (15 mH –(0 + 0) mH)
4.1.3 GIA 0420 WK(T) - ex / S1: Switching of a alarm device

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 8 of 20
4.2 GIA … VO(T) - ex
To connect the GIA...VO it is simply plugged into an existing transmitter by means of a special adapter for the cubic
plug according to DIN EN 175301-803 A (ex. DIN43650 A).
Supply voltage: device takes power from measuring current
Electric connection and commissioning of the device must be carried out by trained and skilled personnel.
Wrong connection may lead to the destruction of the display device, in which case we cannot assume any warranty!
! Mind the maximum input current rating of 40mA under any circumstances!
4.2.1 Assignment of the angle-type plug
Standard assignment of the angle-type plug:
contact
number
wire colour
(socket contact)
Device design type
GIA 0420 VO(T) - ex
GIA 0420 VO(T) - ex / S1
pin
socket
pin
socket
1
grey
GIA.. +
GIA.. -
GIA.. +
GIA.. -
2
red
connected
connected
3
black
connected
switching output +
n.c.
4
yellow
connected
switching output -
n.c.
n.c. = non connected
4.2.2 Adjustment of the connections of the GIA 0420 VO(T) - ex:
Pin 2 of the elbow-type plug is directly connected with the socket.
The GIA 0420 VO(T) - ex is between pin 1 (+) and socket contact 1 (-).
Pin 3 and 4 are directly connected to the socket or are used for the
switching output in case of the option with switching output.
If the 'Signal/GND'-line in your transmitter is not assigned to contact 2 and
if the '-Ub'-line is not assigned to contact 1, please do not forget to adjust
the GIA..-angle-type plug and the external angle-type plug accordingly:
To do so open the GIA..-angle-type plug (refer to the “general instructions
for change ....” on the next page) and exchange the wire of contact 1 and
contact 2 against the wire of the contact representing the connection in your
transmitter. Then exchange and rewire the two contacts in the angle-type plug of your connecting cable.
General instructions for change of the angle-type plug assignment:
Remove the coupling insert by means of a screw driver at the position indicated (arrow).
Change the assignment according the notes of the respective input signal.
Latch coupling insert in cover. You have a choice between 4 different orientations –each of them spaced 90°.
Put on angel-type plug and connect plugs using the long screw delivered (do not forget seals).
pin
+
_
1
2
3
4
1
2
3
4
socket
assignment of GIA 0420 VO(T) –ex (standard)

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 9 of 20
4.2.3 Example assignment for optionally switching output:
Please note: The max. permitted voltage and switching current of the switching output must not be exceeded (even
not for a short time).
Attention: The measuring and switching branches have to be supplied by the same intrinsically safe current
circuit. The total capacity and inductivity of GIA..., intrinsically sage transducer, intrinsically safe
switching device and cabling have to meet the limit values of the supply device.
Example for permitted connection values of switching devices/cabling if the universal isolating amplifier
ST 500 Ex - 10 - .. and the 4-20mA transducer IS-20 S is used:
Connection values of the ST 500 for ia/IIC: Co = 47 nF, Lo = 2 mH
for ia/IIB: Co = 370 nF, Lo = 15 mH
Pressure transmitter IS-20 S
in conjunction with GIA 0420 …
Connection value transmitter :
Ci < 22 nF, Li = 0 mH
Remaining values for
switching device/cabling:
for ia/IIC: Ci < 7.5 nF (47 nF –(13 + 4.5 + 22) nF)
Li < 2 mH (2 mH –(0 + 0) mH)
for ia/IIB: Ci < 330 nF (370 nF –(13 + 4.5 + 22) nF)
Li < 15 mH (15 mH –(0 + 0) mH)
4.2.4 GIA 0420 VO(T) - ex / S1: Switching of a alarm device
Attention: The measuring and switching branches have to be supplied by the same intrinsically safe current circuit!

E36.0.01.6C-01 Installation and Operating Manual GIA 0420 … - ex page 10 of 20
button2
button1
button3
5 Configuration
Note: To configure GIA … VO - ex and GIA … WK - ex the cover has to be removed carefully to get
access to the needed buttons.
Take care of adequate ESD safety precautions to prevent damage to the exposed parts!
!!! Important: The device must not be open in Ex-area !!!
Please note: measuring current should be at least 4mA during configuration!
Follow these instructions to configure the device:
Press button 2 for 2 seconds during actual value display, „dP“ is displayed.
Set parameter value with button 2 and button 3.
Save the set with button 1, the parameter name is displayed again.
Proceed to the next parameter with button 1, the name of that parameter is
displayed.
If there is no key pressed within 60 seconds the configuration is cancelled.
The settings already entered are lost.
Parameter
Value
Description
Button 1
Button 2 and 3
DP
Position of decimal point
----
Max. display range: -1999 …9999
---.-
Max. display range: -199.9 …999.9
--.--
Max. display range: -19.99 …99.99
-.---
Max. display range: -1.999 …9.999
D,.LO
Lower display range limit (display low)
-1999 ... 9999
This value is displayed for input signal = 4mA.
D,.X,
Upper display range limit (display high)
-1999 ... 9999
This value is displayed for input signal = 20mA.
L,
(Measuring range) limit
OFF
deactivated:
Exceeding of the measuring range limit is tolerable as long as value is within
measuring range (p.r.t. note).
ON.ER
active, (display error):
The measuring range limit is exactly bounded by the input signal.
When exceeding or short falling the input signal the device will display an error
message.
ON.RG
active, (display measuring range limit):
The measuring range limit is exactly bounded by the input signal.
When exceeding or short-falling the input signal the device will display the
selected lower/upper display value.
e.g. humidity: when shortfalling or exceeding, the device will display 0% or 100%.
Note: When exceeding the measuring range, the device will always display an error message (.Err.1. or .Err.2.)
independent of the current limit settings.
The measuring range is from approx 3,7 and 20,8 mA.
FILT
Filter
OFF
Filter deactivated
0. 1 ... 2.0
Filter active: Prevents “jumping” of the last digit and filters short noise pulses.
Higher numbers imply stronger filtering
Attention: this causes higher response times of the switching functions!