Orbit Merret OMX 100 Series User manual

1
OMX 100
PROGRAMMABLE TRANSMITTER
DC VOLTMETER/AMMETER
AC VOLTMETER/AMMETER
PROCESS MONITOR
OHMMETER
THERMOMETER FOR PT 100/500/1 000
THERMOMETER FOR NI 1 000
THERMOMETER FOR THERMOCOUPLES
DISPLAY INSTR.FOR LIN.POTENTIOMETERS
GUARANTEE
YERS

2
INSTRUCTIONS FOR USE OMX 100
SAFETY INSTRUCTIONS
Please, read the enclosed safety instructions carefully and observe them!
These instruments should be safeguarded by isolated or common fuses (breakers)!
For safety information the EN 61 010-1 + A2 standard must be observed.
This instrument is not explosion-safe!
TECHNICAL DATA
Transmitters of the OMX 100 series conform to European regulation 89/336/EWG and the Ordinance 168/1997
Coll.
They are up to the following European standards:
EN 55 022, class B
EN 61000-4-2, -4, -5, -6, -8, -9, -10, -11
The instruments are applicable for unlimited use in agricultural and industrial areas.
CONNECTION
Supply of energy from the main line has to be isolated from the measuring leads.
ORBIT MERRET, spol. s r.o.
Vodnanská 675/30
198 00 Prague 9
Czech Republic
Tel: +420 - 281 040 200
Fax: +420 - 281 040 299
e-mail: [email protected]
www.orbit.merret.cz

3
1. CONTENTS
1. CONTENTS
1. Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Instrument description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Instrument setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Setting the DP and the (-) sign. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Access into Configuration menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Guide through minimum instrument setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Configuration menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.1 Configuration mode - INPUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.1.1 Internal values resetting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.1.2 Counter resetting . . . . . . . . . . . . . . . . . . . . . . . . F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.1.3.1 Setting the measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.1.3.2 Shifting the beginning of the range. . . . . . . . . . RTD OHM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.1.3.3 Compensation of 2-wire conduct . . . . . . . . . . . RTD OHM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.1.3.4 Setting the mode of assessment of CJC T/C . 15
4.2.1.3.5 Setting the temperature of CJC . . . . . . . . . . . . . T/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.1.3.6 Setting the time base . . . . . . . . . . . . . . . . . . . . . F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.1.3.7 Setting the input filter parameters . . . . . . . . . . . F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.1.3.8 Setting the display status backup . . . . . . . . . . . F. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.1.3.9 Setting the instrument measuring rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.1.3.10 Selection of auto. menu presetting . . . . . . . . . DC PM OHM F. . . . . . . . . . . . . . . . . . 18
4.2.1.4 Selection of external input function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.1.5 Setting another function of the control key „enter“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2.2 Configuration mode - CHANNELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2.2.1 Display projection . . . . . . . . . . . . . . . . . . . . . . . DC PM DU OHM F. . . . . . . . . . . . . 20
4.2.2.2 Setting the digital filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.2.2.3 Setting the decimal point. . . . . . . . . . . . . . . . . . DC PM DU OHM F. . . . . . . . . . . . . 21
4.2.2.4 Setting the measuring units description . . . . . . . DC PM DU OHM F. . . . . . . . . . . . 22
4.2.3 Configuration mode - OUTPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.2.3.1.1 Limits - type of relay switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.2.3.1.2 Limits - setting the bounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.2.3.2.1 Data output - rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2.3.2.2 Data output -address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2.3.3.1 Analog output - type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.2.3.3.2 Analog output - range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.3.4 Display projection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.4 Configuration mode - SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.4.1 Restoration of manufacture setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.2.4.2 Input range calibration . . . . . . . . . . . . . . . . . . . . . . DU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.4.3 Setting new access password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.2.4.4 Instrument identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5. Table of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6. Method of measuring of CJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7. Data protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8. Error statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9. Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10. Instrument dimensions and installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11. Certificate of guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4
INSTRUCTIONS FOR USE OMX 100
2. INSTRUMENT DESCRIPTION
DESCRIPTION
The OMX 100 model series are programmable transmitters to DIN rail manufactured in the following types:
OMX 100DC DC voltmeter/ammeter
OMX 100PWR AC voltmeter/ammeter, wattmetr
OMX 100PM Process monitor
OMX 100RTD Thermometer for Pt 100/500/1 000, Ni 1 000
OMX 100T/C Thermometer for thermocouples
OMX 100DU Display instrument for linear potentiometers
OMX 100OHM Ohmmeter
OMX 100F Frequency meter
The instruments are based on an 8-bit microcontroller with A/D converter, that secures high accuracy, stability and
easy operation of the instrument.
Programmable projection of the display
Calibration projection for the beginning and the end of the input range
setting the input type
Projection -99…999
Digital filters
Exponen. average from 2…100 measurements
Rounding setting the projection step for display
Mathematic functions
Tare* assigned to reset display in case of non-zero input signal
External control
Hold display/instrument blocking
Lock locking the control keys for access into Configuration menu
Tare tare activation
Resetting counter resetting/preset
Output
Analog programmable
0…5 mA, 0…20 mA, 4…20 mA (with error statement evaluation 3 mA)
0…2/5/10 V
0,2…2 200 Hz
* only for type DC, PM, DU

5
2. INSTRUMENT DESCRIPTION
OPERATION
The transmitter is set by two control keys on the front panel or via data line RS 232/485.
A standard equipment is the OM Link interface, through which it is possible to modify and store all settings. The
OM Link program is freely procurable, to be downloaded from the web site. For the connection an OM Link cable
is necessary.
All programmable parameters are stored in the EEPROM memory (they hold even after the instrument is switched
off).
EXTENSION
Excitation is suitable for feeding sensors and converters. It has a galvanic isolation of 12…24 VDC.
Comparators are assigned to control two limit values with relay output. The limits have adjustbale hysteresis as
well as selectable delay of the switch-on. Reaching the preset limits is signalled by LED and simultaneously by the
switch-on of the relevant relay.
Data outputs are for their rate and accuracy suitable for transmission of the measured data for further projection or
directly into the control systems. We offer an isolated RS 232 and RS 485 with the ASCII protocol.
Real time is an internal time control of data collection. It is suitable everywhere where it is neccessary to register
measured values in a given time segment. Up to 65 000 values may be stored in the instrument‘s memory. Data
transmission into PC via serial interface RS232/485
FIRMWARE www.orbit.merret.cz/update
With respect to the continuous development and innovation of our products it is now possible to download the most
recent program version for every instrument directly from the web pages.
After connecting the instrument to PC and running the program the upgrade is performed automatically .
Number of the current program version in your instrument can be found in „Configuration menu - service - identifi-
cation“

6
INSTRUCTIONS FOR USE OMX 100
3. CONNECTION
The lead for feeding the instrument should not be in the proximity of the incoming low-potential signals.
Contactors, motors with larger input power and other efficient elements should not be in the proximity of the instru-
ment.
The lead into the input of the instrument (the measured quantity) should be in sufficient distance from all power leads
and appliances. Provided this cannot be secured it is necessary to use shielded leads with connection to ground.
The instruments are tested in compliance with standards for use in industrial area, yet we recommend to abide by
the above mentioned principles.
Relay parameters listed in Technical data apply for resistance load. Upon connection of induction load we recommend
fitting the leads to relay 1 A with a fuse for protection of
maximum load.
Grounding on terminal „E“ has to be connected at all times.
In RTD and OHM inputs it is necessary in 2 or 3-wire connec- tion to link the unconnected inputs to terminal board.
MEASURING RANGES
Type Input 1 Input 2 Input 3
OMX 100 PWR Input 1 > 0…60 mV * 0…150 mV * 0…300 mV * 0…1 A * 0…5 A
OMX 100 PWR Input 2 > 0…10 V * 0…100 V * 0…150 V * 0…250 V * 0…450 V
OMX 100 DC ±4/±40 mA ±0,4/±4 V ±40/±400 V
OMX 100 DC 0…1/5 A 0…60/150 mV
OMX 100 PM 0/4…20 mA 0…2 V 0…5/10 V
OMX 100 OHM 0…999 Ohm * 0...9,99 kOhm * 0...99,9 kOhm * 5…105 Ohm
OMX 100 F < 30 V < 150 V < 300 V
Feeding of an open collector (OC) for frequency output max. 40 V, (internal
resistance 5k6)

7
3. INSTRUMENT CONNECTION
OMX 100T/C
OMX 100DC, PM, F
Hold/Lock
INPUT 2 INPUT 1
+
+
INPUT 3
+
GND
-
L N E
+
-
POWER
L1
L2
+
-
+
-
+ +
AO - frequency
AO - voltage
AO - current
TxD Rx/Tx-
GND GND RxD Rx/Tx+
232
232
485
485
OM Link
-
+
Exc.
AO - supply OC
E B
INPUT I INPUT U
GND
S+
E-
S-
E+
S-
ES+
ES-
ES+ E-
INPUT
+
GND
-
CJC
OMX 100RTD
OMX 100PWR
OMX 100DU

8
INSTRUCTIONS FOR USE OMX 100
4. INSTRUMENT SETTING
The instrument is set and controlled by 5 control keys located on the front panel. By means of these controls it is
possible to browse through the operating program and to select and set the required values.
SYMBOLS USED IN THE INSTRUCTIONS
DC AC PM DU OHM RTD T/C Indicates the setting for given type of instrument
CONTROL KEYS FUNCTIONS
+
UP* LEFT* UP + LEFT
Measuring mode
tare/resetting tare projection access into menu
Moving around in the menu
move to next item return to previous level confirm selected item
Setting/selection - items
move up move down confirm selected item
Setting - numbers
change of current figure - up - move to higher decade confirm selected number
* control keys react after being released
12
INPUT
OUTPUT
Signalization - green LED
ON LED is alight
ON LED is flashing
error statement
OFF LED is not alight
Output value
+ 3 digit optional
projection of meas.unit
Input value
+ 3 digit optional
projection of meas.unit
Control keys
Relay status - red LED
ON number is alight
OFF number is not alight
OFF number is flashing
limits w/restriction
(hysteresis, delay)

9
4. INSTRUMENT SETTING
SETTING THE DECIMAL POINT AND THE (-) SIGN
DECIMAL POINT
Its selection in the setting mode is performed by control key with transition behind the highest decade, when the
data starts flashing. Positioning is performed by .
For projection of value exceeding 999 the „k“ suffix may be set up (display value is multiplied by 1000, only for
frequency output).
MINUS SIGN
Setting the minus sign is performed by control key on the higher decade. When editing the item, figures change
in numeric row 0,1…9,-,0,1
ACCESS INTO THE CONFIGURATION MODE
The code from manufacture is always preset to 000. In case of loss of access
password it is possible to use the universal access
code "177"
If the code is preset to 000 the access into the menu is free, i.e. without call for
its setting
CHA .
SER.
OUT.
INP.
PAS 000
shift left
OK
w/o saving
9,8,7…
+
++

10
INSTRUCTIONS FOR USE OMX 100
4.1 GUIDE THROUGH MINIMUM INSTRUMENT SETTING
Access into the „Configuration menu““
PAS Entering the introductory
access password
000 Standard manufacture
setting of the access
password
Selection of the measuring range/input type
CL.C.
+
PM
U 2
I 4
I 0
U 10
U 5
B
J
E
T
S
R
N
K
T/C
4-W
3-W
2-W
RTD
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
U 40
U 4
U 0.4
400
I 40
I 4
60 m
I 1
150
DC - 2
DC - 1
I 5
CH.S.
F
FRE.
COU .
MOD Setting the instrument
measuring range
DC Input
- setting the input range is dependant on the
ordered measuring range
PM Input
- setting the input range
RTD Input
- setting the type of connection
- in 2 or 3-wire connection it is necessary to link
the unconnected inputs (see the connection)
T/C Input
- setting the type of thermocouple is dependant
on the ordered measuring range
- B type B Range 1
R type R Range 2
S type S
T type T
E type E Range 3
J type J
K type K
N type N
Input F
- setting the measuring mode
- FRE. Frequency measurement
COU. Impulse counter
If the code is preset to 000 the access into „CM“ is free, i.e. without call for
its setting
PAS 000
shift left
OK
w/o saving
9,8,7…
+
++

11
Setting the display projection
CHA .
SER.
OUT.
INP.
+
C. A.MIN
FIL.MAX
FOR .
DES .
SET
MIN .Setting the display
projection for minimum value
of the input signal
- range of the setting is -99…999
MAX Setting the display
projection for maximum
value of the input signal
- range of the setting is -99…999
Setting the analog output type - U/I
+
CHA .
SER.
OUT.
LIM
A. O.
DAT .
INP.
MIN
TYP
MAX
I 20
I 4
U1 0
FRE.
U 2
I 5
DEF
DI S .
E 4
OFF
I 5 Type - 0…5 mA
I 4 Type - 4…20 mA
E 4 Type - 4…20 mA with error
statement (3,0 mA)
I 20 Type - 0…20 mA
U 2 Type - 0…2 V
U1 0 Type - 0…10 V
FRE.Type - 0,2…2 200 Hz
OFF The output is off
Setting the analog output range - frequency
+
CHA .
SER.
OUT.
LIM
A. O.
DAT .
INP.
F. MI
TY P
F. MA
DI S .MIN
MAX
F. MI Setting the beginning of the
frequency range for item
„MIN“
- range of the setting is 0,2…2 200 Hz
F. MA Setting the end of the
frequency range for item
„MAX“
- range of the setting is 0,2…2 200 Hz
MIN Assigning the display value
to the beginning of the AO
range
- range of the setting is -99…999
MAX Assigning the display value
to the end of the AO range
- range of the setting is -99…999
4. GUIDE THROUGH MINIMUM INSTRUMENT SETTING
For type „F“ the items „SCA“ and „OFF“ will be displayed

12
INSTRUCTIONS FOR USE OMX 100
4.2 CONFIGURATION MENU
• designated for professional service and maintenance
• complete instrument setting
• access is protected by password or a shorting link on the input connector
Upon delay longer than 30 s the programming mode is automatically dis- continued and the instrument itself switches back to measuring mode
23 .6
Entering the access password
PAS
000
OUT.LIM .DA T. A. O.
SER.RES.CA L N.PA.
Setting
the limits,
hysteresis and
delay
Setting the
data output
Setting the
analog output
Restoring
manufacture
setting/cali-
bration
Instrument
calibration
ID. .
Instrument
identification
Setting
new access
password
OUT.
Setting the outputs
SER.
Service functions, authorization,
calibration
CHA .SET FOR.
Setting
projection for
min/max input
signal
Setting the
digital filters
Setting the
decimal point
CHA
Instrument setting, calibration
FIL.
INP.CL. T. CFG .
Resetting inter-
nal values
Counter
resetting
Auxiliary input
function
INP.
Instrument setting
CL.C
DI S .
Mode of
display
projection
+
AUX.
Auxiliary input
function
KEY
Control key
function

13
4. INSTRUMENT SETTING - CONFIGURATION MODE
4.2.1 CONFIGURATION MODE - INPUT
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
CL. C.
The basic instrument functions are set in
this menu
CL. T. Internal values resetting
CL. C. Counter resetting
Type „F“
CFG Selecting the measuring
range and measuring rate
AUX.Setting the external control
input function
KEY Setting the control-key
function
4.2.1.1 INTERNAL VALUES RESETTING
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
CL. T. Tare resetting
4.2.1.2 COUNTER RESETTING F
+
CHA .
SER.
OUT.
CL. T.
CL.C.
INP.
AUX.
CFG
KEY
CL. C. Counter resetting
Holds valid for mode „Counter“

14
INSTRUCTIONS FOR USE OMX 100
4.2.1.3.1 SETTING THE MEASURING RANGE
CL.C.
+
PM
U 2
I 4
I 0
U 10
U 5
B
J
E
T
S
R
N
K
T/C
4-W
3-W
2-W
RTD
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
U 40
U 4
U 0.4
400
I 40
I 4
60 m
I 1
150
DC - 2
DC - 1
I 5
CH.S.
F
FRE.
COU .
MOD Setting the instrument
measuring range
DC Input
- setting the input range is dependant on the
ordered measuring range
- U 0.4 ±0,4 V Range 1
U 4 ±4 V
U 40 ±40 V
400 ±400 V
60 m ±60 mV Range 2
150 ±150 mV
I 1 ±1 A
I 5 ±5 A
PM Input
- setting the input range
RTD Input
- setting the type of connection
- in 2 or 3-wire connection it is necessary to link
the unconnected inputs (see connection)
T/C Input
- setting the type of thermocouple is dependant
on the ordered measuring range
- B type B Range 1
R type R Range 2
S type S
T type T
E type E Range 3
J type J
K type K
N type N
Input F
- setting the measuring mode
- FRE. Frequency measurement
COU. Impulse counter

15
4. INSTRUMENT SETTING - CONFIGURATION MODE
4.2.1.3.2 SHIFTING THE BEGINNING OF THE RANGE RTD OHM
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
LEA .
R. Ad.
A. ST.
R. Ad. Shifting the beginning of
the measuring range
- in cases when it is necessary to shift the
beginning of the range by a given value, e.g.
when using sensor in measuring probe
- entered directly in Ohm
4.2.1.3.3 COMPENSATION OF 2-WIRE CONDUCT RTD OHM
A. ST.
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
LEA .
r. Ad.
YES
LEA .Compensation of 2-wire
conduct
- for measurement accuracy it is always
necessary to perform compensation of the
conduct in case of 2-wire connection
- entered directly in Ohm
- prior to confirmation of the displayed
challenge „YES“ it is necessary to substitute
the sensor at the end of the conduct by a
short circuit
- preset from manufacture to „0“
4.2.1.3.4 SETTING THE MODE OF ASSESSMENT OF CJC T/C
+
IN . 1
Ex . 2
Ex . 1
IN . 2CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
T.C. J.
CJC
C.J. C. Mode of assessment of
cold junction
- description of the mode of assessment of cold
junction is in chapter 5, page 30
IN . 1 Measurement without
reference thermocouple
- CJC measurement on the instrument brackets
IN . 2 Measurement with reference
thermocouple
- cold junction measurement on the instrument
brackets with anti-series connection of ref.
thermocouple
Ex . 1 Measurement without
reference thermocouple
- whole measuring system operates under
identical and constant temperature
Ex . 2 Measurement with reference
thermocouple
- when using compensation box

16
INSTRUCTIONS FOR USE OMX 100
4.2.1.3.5 SETTING THE TEMPERATURE OF CJC T/C
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
T.C. J.
CJC
T.. C. J. Setting the temperature
of CJC
- range 0…60°C with compensation box
4.2.1.3.6 SETTING THE TIME BASE F
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
BAC
MOD
FIL.
M. T.CL. t.
A. ST.
DEF
0.5
5
1
10
0.1
M. T. Setting the measuring
time - time base
- if you set the time of measurement e.g to 1s,
the measuring time is approximately from
1s to 2s (1 s + maximum one period of
measured signal). If no impulse comes within
2 s , it is understood that the signal has zero
frequency
- range of the setting of the time base is 0,5 s
to 10 s
- in the „RTC“ regime with projection of date
the set time determines the period of switching
between time/date, min. is 5 s, the date is
displayed for approximately 2,5
4.2.1.3.7 SETTING THE INPUT FILTER PARAMETERS F
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
BAC
MOD
FIL.
M.T.CL. t.
A. ST.
DEF
200
40
100
5
OFF
FIL. Setting the digital input
filter
- through digital filter we may suppress
undesirable interfering impulses (e.g. relay
back-swings) on the input signal. The set
parameter indicates maximum possible
instrument frequency (Hz), which the
instrument may process without restriction
Method and process of the setting of CJC is described in separate chapter
on page 31
Valid for the „Counter“ mode
When entering the contact and if we
know the maximum input frequency we
recommend using the filter
Valid for the „Frequency“ mode

17
4.2.1.3.8 SETTING THE DISPLAY STATUS BACKUP F
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
BAC
MOD
FIL.
M.T.CL. t.
A. ST.
DEF
ENB .
DI S .
BAC.Setting the display status
backup
- setting the restoration of display value after
power outage or instrument switchoff
DI S .After switch-on instrument
resets itself to zero
ENB .After switch-on instrument
reads the display status from
its memory
4.2.1.3.9 SETTING THE INSTRUMENT MEASURING RATE
+
DEF
0.5
10.0
5.0
2.5
1.2CH A .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
40.0
20.0
80.0
A. ST.
M.P.S. Setting the measuring
rate
0.5 Rate - 0,5 measurements/s
1.2 Rate - 1,2 measurements/s
2.5 Rate - 2,5 measurements/s
5.0 Rate - 5 measurements/s
10.0 Rate - 10 measurements/s
20.0 Rate - 20 measurements/s
40.0 Rate - 40 measurements/s
80.0 Rate - 80 measurements/s
4. INSTRUMENT SETTING - CONFIGURATION MODE
Valid for the „Counter“ mode

18
INSTRUCTIONS FOR USE OMX 100
4.2.1.3.10 SELECTION OF AUTOMATIC MENU PRESETTING DC PM OHM F
DEF
+
ENA .
DI S .CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP.
M.P.S.
MOD
A. ST.
CH.S. Menu presetting
ENA .Enable
- depending on the set input the following items
will be preset automatically:
- CHANNELS: MIN/MAX, FOR, DES
- OUT: A.O. > MIN/MAX
- aut. preset items will disappear from the menu
and reappear again after setting „MAN“
- example for input 4-20mA (PM):
MIN/MAX > 4-20; FOR > 00.0; DES > mA;
A.O. MIN/MAX > 4-20
DI S .Disable
- as a standard, according to individual items
on the menu
4.2.1.4 SELECTION OF EXTERNAL INPUT FUNCTION
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP. LOC.
TAR .
HLD.DEF
CL.C.
AU. 1
AU 1 Selection of external input
function
LOC.LOCK, locking the control
keys on the instrument
HLD.HOLD, stop measuring of
the entire instrument
TAR .TARE - Tare* activation
CL.C. Counter resetting
only for type „F“, mode
„COU“
4.2.1.5 SETTING ANOTHER FUNCTION OF THE CONTROL KEY „ENTER“
+
CHA .
SER.
OUT.
CL. T.
AUX.
CFG
KEY
INP. ENB.
DI S .
DEF
ALL
ALL Setting another function
of the control key
DI S .Without function
ENB .Activation of keys for Tare*
projection, in type „F“ in
mode „COU“ > resetting to zero
* only for type DC, PM, DU, F
When selecting „AUT.“ in type „F“ the decimal point and description are preset in the range of
0,01 Hz…50,0 kHz. Limits and AO are set in kHz!

19
4. INSTRUMENT SETTING - CONFIGURATION MODE

20
INSTRUCTIONS FOR USE OMX 100
4.2.2 CONFIGURATION MODE - CHANNELS
+
CHA.
SER.
OUT.
INP.SET
FOR .
FIL.
DES .
In this menu instrument parameters are set
SET Setting the display
projection for minimum/
maximum value of the input signal 
FIL.Setting the digital filters

FOR .Setting the decimal point

DES .Setting the measuring units

Input type Setting options
DC  
AC  
PM  
DU  
OHM  
RTD 
T/C 
F 
4.2.2.1 DISPLAY PROJECTION DC PM DU OHM F
+
CHA.
SER.
OUT.
MIN
MAX
INP.
FIL.
FOR .
DES .
SET
MIN .Setting the display
projection for minimum value
of the input signal
- range of the setting is -99…999
MAX Setting display projection
for maximum value of the
input signal
- range of the setting is -99…999
SCA Setting the calibration
constant
- calibration constant is for the conversion of
input value to required display value
- by setting the minus value the direction of
counting changes, i.e. we count down
- range: -0,00001...999999, DEF = 1
OFF Setting the additive constant
„PRESET“
- shifting the beginning of measurement by
a set value which will always be read upon
resetting the instrument to zero
- range: -99999...999999, DEF = 0
Only for type „F“
Items „MIN“ and „MAX“ resp. „SCA“ and „OFF“ are displayed only when the menu is set to „Manual“
INP > CFG > CH.S > MAN
+
CHA.
SER.
OUT.
SCA
OFF
INP.
FIL.
FOR .
DES .
SET