Orbit Merret OMM 37 User manual

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OMM 37
3 1/2 DIGIT
DC VOLTMETER/AMMETER
PROCESS MONITOR
THERMOMETER FOR PT 100

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INSTRUCTIONS FOR USE OMM 37
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
Measuring instruments of the OMM 37 series conform to the European regulation 89/336/EWG and the Ordinance
168/1997 Coll.
They are up to the following European and Czech 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.
Vodnanska 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

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1. CONTENTS
1. Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Instrument description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setting the decimal point. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Change of projection on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6. Instrument dimensions and installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7. Certificate of guarantee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1. CONTENTS

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INSTRUCTIONS FOR USE OMM 37
2. INSTRUMENT DESCRIPTION
DESCRIPTION
The OMM 37 model series include simple 3 1/2 digit panel instruments in these alternatives:
DC DC voltmeter/ammeter
PM Process monitor
RTD Thermometer for Pt 100 sensors
For their dimensions the instruments are suitable for mosaic panel installation.
ADJUSTABLE DISPLAY PROJECTION
Setting by potentiometers from the back of the instrument (in the range of approx. ±10 %)
Projection ±1999
OPERATION
The instrument is designed for simple measurement without further control.
Placement of the decimal point is selectable by a jumper under the front panel.
EXTENSION
Isolated supply of the instrument with range of 7...30 VDC is designated for applications where galvanic
separation must be used.

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3. CONNECTION
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.
+ +
- -
1234
INPUT
POWER SUPPLY
ES-ES+
+
-
1234
POWER SUPPLY
OMM 37DC, PM
OMM 37RTD

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INSTRUCTIONS FOR USE OMM 37
4. INSTRUMENT SETTING
SETTING BRIGHTNESS AND DECIMAL POINT
After removing the top cover frame the following settings are accessible
Decimal point
by jumper X1
Display brightness
by trimmer P1 under the front
panel
MODIFICATION FO THE MEASURING RANGE
The adjusting trimmers for correction of display projection
are accessible at the input brackets of the instrument
Full range
- setting display projection (approx. ±10 %)
Offset
- shifting zero
- (compensation of 2-wire lead for OMM 37RTD),
- the trimmer is fitted only in the OMM 37PM and RTD
model
Brightness regulation
Offset
Full range
FO
1 - 2 X.xxx
3 - 4 XX.xx
4 - 5 XXX.
x
Jumper X1
1
5
X1
P1

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4. INSTRUMENT SETTING

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INSTRUCTIONS FOR USE OMM 37
INPUT
the range is fixed, according to order DC
±199,9 mV 1 MOhm
±1,999 V 1 MOhm
±19,99 V 1 MOhm
±199,9 V 1 MOhm
±199,9 µA < 260 mV
±1,999 mA < 260 mV
±19,99 mA < 260 mV
±199,9 mA < 260 mV
the range is fixed, according to order PM
0...5 mA < 260 mV
0...20 mA < 260 mV
4...20 mA < 260 mV
±2 V 1 MOhm
±5 V 1 MOhm
±10 V 1 MOhm
RTD
Pt 100 -20°...140°C
Type Pt: 100 Ohm, platinum element,
s α=0,00385Ohm/Ohm/°C
Connection: 2 wire
PROJECTION
Display: ±1999, intensive red or green LED,
digit height 9,1 mm
Decimal point: adjustable - by jumper
Brightness: adjustable - by trimmer inside the instrument
INSTRUMENT ACCURACY
TC: 100 ppm/°C
Accuracy: ±0,1 % of range
±0,8 % of range RTD
Resolution: 1°C RTD
Rate: 2,5 measurements/s
Overload: 10x (t < 100 ms), 2x (long-term)
Calibration: at 23°C and 40 % r.h.
POWER SUPPLY
7...12 V AC/DC, max. 100 mA (DC), 60 mA (AC)
7...30 V AC/DC, max. 160 mA (DC), 280 mA (AC),
(24 VDC/55 mA), isolated
MECHANIC PROPERTIES
Connection: connector terminal board
conductor cross section up to 2,5 mm2
Material: Noryl GFN2 SE1, incombustible UL 94 V-I
Dimensions: 48 x 24 x 75 mm
Panel Cut-out: 43,5 x 22,5 mm
OPERATING CONDITIONS
Stabilization period: within 15 minutes after switch-on
Working temp.: 0°...50°C
Storage temp.: -10°...85°C
Cover: IP42, (front panel only)
Overvoltage cat.: EN 61010-1, A2
III. - instrument power supply (300 V)
II. - input (300 V)
for pollution degree II
EMC: EN 61000-3-2+A12; EN 61000-4-2, 3, 4, 5, 8, 11;
EN 550222, A1, A2
5. TECHNICAL DATA

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5. TECHNICAL DATA

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INSTRUCTIONS FOR USE OMM 37
6. INSTRUMENT DIMENSIONS
Panel cut
Side view
Front view
43,5 mm
22,5 mm
48 mm
24 mm
5 mm
72 mm
Panel thickness: 0,5...20 mm

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7. CERTIFICATE OF GUARANTEE
Product OMM 37 DC PM RTD
Type . . . . . . . . . . . . . . . . . . . .
Manufact. No. . . . . . . . . . . . . . . . . . . . .
Date of sale . . . . . . . . . . . . . . . . . . . .
For this instrument applies a guarantee period of 12 months of the date of sale to the user. Defects occurring during
this period due to manufacturing error or due to material faults shall be eliminated free of charge.
For instrument quality, function and construction the guarantee shall apply provided that the instrument was connected
and used in compliance with the instructions for use.
The guarantee does not apply to defects caused by:
- mechanical damage
- transportation
- intervention of unqualified person including the user
- irreversible event
- other unprofessional interference
The manufacturer performs guarantee and post-guarantee repairs unless provided for otherwise.
Stamp, signature
7. CERTIFICATE OF GUARANTEE

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INSTRUCTIONS FOR USE OMM 37
TECHDOK - OMM 37 - 2003 - v.5.0 - e
Austria
ING.E.GRUBER GmbH
Edu. Kittenberger Gasse 97 Top2
A-1230 Wien
tel: +43 - 1 - 869 23 39-0
fax: +43 - 1 - 865 18 75
e-mail: [e-mail]
www.gruber-components.at
The Netherlands
AE SENSORS B.V.
J. Valsterweg 92
3301 AB Dordrecht
Tel: +31 - 78 - 621 31 52
Fax: +31 - 78 - 621 31 46
e-mail: [email protected]
www.aesensors.nl
Switzerland
ORBIT CONTROLS AG
Zürcherstrasse 137
8952 Schlieren
tel: +41 - 1 - 730 27 53
fax: +41 - 1 - 730 27 83
e-mail: [email protected]
www.orbitcontrols.ch
USA
METRIX Instruments Co.
1711 Townhurst Dr.
Houston, Texas 77043-2899
tel: +1 - 713 - 461 21 31
fax: +1 - 713 - 461 82 83
e-mail: [e-mail]
www.metrix1.com
Germany
MEGATRON Elektronik AG & Co.
Hermann-Oberth-Str. 7
85640 Putzbrunn/München
tel: +49 - 89 - 460 94 - 0
fax: +49 - 89 - 460 941 01
e-mail: [email protected]
www.megatron.de
Russian Federation
PO <INTERFACE>
a.b. 3408
Krasnodar, 350044
tel: +1 - 8612 - 660 483
fax: +1 - 8612 - 623 000
e-mail: [email protected]
www.meter.chat.ru
Turkey
ALFA ELEKTRONIK Ltd.
Baglarbasi Mah. Ergenekon No: 33
TR - 81540 Maltepe - ISTANBUL
Tel: +90 - 216 - 442 39 49
Fax: +90 - 219 - 305 54 50
e-mail: [email protected]
www.alfa-technik.com
Lithuania
RIFAS UAB
Tinklu g. 29a
LT-5300 Panevéžys
tel: +370 - 5 - 510 400
fax: +370 - 5 - 582 729
e-mail: [e-mail]
www.metrix1.com
Slovakia
TECHREG, s.r.o.
Dukelských hrdinov 2
984 22 Lučenec
tel: +421 - 47 - 433 15 92
fax: +421 - 47 - 433 15 92
e-mail: [email protected]
www.techreg.sk
Ukraine
OOO <KOTRIS>
Nesterova 3, Office 907
030 57 Kyjev
tel: +44 - 446 - 21 42
fax: +44 - 446 - 21 42
e-mail: [email protected]
ORBIT MERRET, spol. s r.o.
Vodnanska 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