Orbit Merret OMM 37 User Manual

GUARANTEE

YEARS

OMM 37

3 1/2 DIGIT

DC VOLTMETER/AMMERMETER

PROCESS MONITOR

THERMOMETER FOR Pt 100

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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.

Vodňanská 675/30
19800 Prague 9
Czech Republic

Tel: +420 - 281040200
Fax: +420 - 281040299

e-mail: [e-mail]

www.orbit.merret.cz

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INSTRUCTIONS FOR USE OMM 37

1. Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. Instrument description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3. Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4. Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Setting the decimal point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Change of projection on the display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6. Instrument dimensions and installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7. Certificate of guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1CONTENS

INSTRUCTIONS FOR USE OMM 37

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2 INSTRUMENT DESCRIPTION

2.1 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

2.2 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.

2.3 Option

Isolated supply of the instrument with range of 10…30 VDC is designated for applications where galvanic
separation must be used.

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INSTRUCTIONS FOR USE OMM 37