Enmet OMNI-4000 Manuale Utente

ENMET CorporationPO Box 979Ann Arbor, MI 48106-097980006-019August 1999MCN-231, 03/31/00MCN-262, 07/15/02MCN-283, 11/12/02MCN-297, 04/16/03MCN-319, 07

ENMET Corporation OMNI-4000 S/N 6705 and above41.0 General DescriptionOVERVIEW: In this section the OMNI-4000 and its components are described by mean

OMNI-4000 S/N 6705 and above ENMET Corporation5The names associated with the operational mode of these switches are also used for the programming mode

ENMET Corporation OMNI-4000 S/N 6705 and above61.6 Sensor ReadingsInstantaneous ReadingsThe gas content measured by each of the enabled sensors can be

OMNI-4000 S/N 6705 and above ENMET Corporation7Type of gas – unit of measurement, showing the alternation information displayed to the operator.For ex

ENMET Corporation OMNI-4000 S/N 6705 and above81.7.1 Gas AlarmsAccording to the programming and the type of gas, the gas alarms can be triggered when

OMNI-4000 S/N 6705 and above ENMET Corporation9Figure 1-11: ENTER Switch, Used to Acknowledge an Audio AlarmFigure 1-12: Example of a HistogramENTER s

ENMET Corporation OMNI-4000 S/N 6705 and above101.7.3 Acknowledging AlarmsAcknowledging Gas Alarms• This means canceling only the audio alarm, not the

OMNI-4000 S/N 6705 and above ENMET Corporation111.9.2 Data AvailableThe device computes, for each channel in use and at a rate of once per second, an

ENMET Corporation OMNI-4000 S/N 6705 and above121.11 BatteriesThe OMNI-4000 is fitted with two batteries:• One NI-CAD battery pack, rechargeable. See

OMNI-4000 S/N 6705 and above ENMET Corporation131.12 Smart Block Sensor AssembliesThese sensor assemblies for the OMNI-4000 must be handled with extre

ENMET Corporation OMNI-4000 S/N 6705 and above14Figure 2-1: OMNI-4000 On a Shoulder StrapFigure 2-2: Attachments for Remote SamplingCalibrationCoverCa

OMNI-4000 S/N 6705 and above ENMET Corporation152.0 Operation2.1 Using the OMNI-4000This Chapter deals with the positioning of the OMNI-4000 for takin

ENMET Corporation OMNI-4000 S/N 6705 and above16To Replace the Instrument Battery Pack with the Integral Pump and Battery Pack• Release the instrument

OMNI-4000 S/N 6705 and above ENMET Corporation172.1.4 Use the OMNI-4000 as a Hand-Held or Stationary BeaconThe location of the instrument may be chang

ENMET Corporation OMNI-4000 S/N 6705 and above182.2.1 Standard Start-Up• Press the ON/OFF switch lightly• The device performs a series of tests for a

OMNI-4000 S/N 6705 and above ENMET Corporation19The device is now ready for use.Figure 2-7: Example of Changing Reference Gas,%LEL CH4 (top) to, %LEL

ENMET Corporation OMNI-4000 S/N 6705 and above20Auto Set Not PossibleIf the ambient temperature is below 0°C or above 45°C or if the batteries are too

OMNI-4000 S/N 6705 and above ENMET Corporation21Figure 2-9: Example of Alternating DisplayShowing the Display of usnits of Measurement and th Type of

ENMET Corporation OMNI-4000 S/N 6705 and above222.4 Display of Supplementary DataWhen the device is operating normally, the operator can access a vari

OMNI-4000 S/N 6705 and above ENMET Corporation232.4.5 STEL and TWAThis information, programmed by the manufacturer and contained in the internal memor

Table of ContentsINTRODUCTION...

ENMET Corporation OMNI-4000 S/N 6705 and above242.5 AlarmsTo warn the operator of a hazard, such as the presence of gas, lack of oxygen, STEL/TWA thre

OMNI-4000 S/N 6705 and above ENMET Corporation25The action to be taken depends upon the MESSAGE displayed.MESSAGE: Battery low Recharge the batterie

ENMET Corporation OMNI-4000 S/N 6705 and above262.5.2 Intermittent Audio AlarmCause• The alarm threshold of at least one operational channel has been

OMNI-4000 S/N 6705 and above ENMET Corporation27Alarms Triggered• Intermittent audible alarm• General alarm indicator lamp blinking• One or more alarm

ENMET Corporation OMNI-4000 S/N 6705 and above282.6 Turning the OMNI-4000 OffTo turn the OMNI-4000 off, press the ON/OFF switch for three seconds. Th

OMNI-4000 S/N 6705 and above ENMET Corporation29Figure 2-20: Removal of Battery PackWARNING: Substitution of batteries or other components may comprom

ENMET Corporation OMNI-4000 S/N 6705 and above302.8 Printing the HistogramsThe Histograms function enables printout or transfer to a personal computer

OMNI-4000 S/N 6705 and above ENMET Corporation31Figure 2-21: Wiring of Connectors for Serial Printer or PC RS 232C LinkFigure 2-22: 9 Pin Sub D Recept

ENMET Corporation OMNI-4000 S/N 6705 and above32Review of DataThis concerns the OMNI-4000 whether connected to a serial printer or the serial port of

OMNI-4000 S/N 6705 and above ENMET Corporation332.9 Interference Gas ResponseOften electrochemical gas detection cells respond to gases other than tho

2.5.1 Continuous Sound Alarm ...

ENMET Corporation OMNI-4000 S/N 6705 and above34 Figure 3-1: Accessing the Maintenance MenuFigure 3-2: Diagram of Maintenance Menu LoopProgramA Sensor

OMNI-4000 S/N 6705 and above ENMET Corporation353.0 Maintenance3.1 Scheduling OMNI-4000 MaintenanceThe sensor responses of an OMNI-4000 should be chec

ENMET Corporation OMNI-4000 S/N 6705 and above363.2.3 Overview: Calibrate a Sensor MenuThis menu is used for:• Selecting the channel for programming•

OMNI-4000 S/N 6705 and above ENMET Corporation37Selecting the Maintenance MenuAfter inserting the special plug into the DIN connector located on the s

ENMET Corporation OMNI-4000 S/N 6705 and above38Selecting the Type of Gas for the Explosive Gas Channel, Channel 1.Twenty-seven (27) explosive gases a

OMNI-4000 S/N 6705 and above ENMET Corporation39• If the chosen gas is the "Other" gas, a multiplier coefficient must be entered. If the co

ENMET Corporation OMNI-4000 S/N 6705 and above403.3 Setting an Alarm Threshold3.3.1 For an Explosive Gas ChannelFor all explosive gases except "M

OMNI-4000 S/N 6705 and above ENMET Corporation413.3.3 For a Toxic Gas ChannelThere is only one alarm threshold to program. The display reads, for ins

ENMET Corporation OMNI-4000 S/N 6705 and above42Selecting the Maintenance MenuWith the device turned on, plug in the DIN plug. See Figure 3-5. The d

OMNI-4000 S/N 6705 and above ENMET Corporation433.5 Selecting the Channel for CalibrationThere is a channel for each sensor. Channel 1 is reserved fo

List of Figures and TablesFigure 1-1: Exterior Features of OMNI-4000...

ENMET Corporation OMNI-4000 S/N 6705 and above44Inputting the Calibration Gas ValueThis procedure defines the content of the calibration gas to be app

OMNI-4000 S/N 6705 and above ENMET Corporation45ProblemsAs soon as ENTER has been pressed after the sensitivity measurement, the display may show:• &

ENMET Corporation OMNI-4000 S/N 6705 and above463.5.3 Calibration of a Toxic Gas ChannelEquipment Required The calibration cover A calibration ada

OMNI-4000 S/N 6705 and above ENMET Corporation47Inputting the Calibration Value• This procedure defines the content of the calibration gas which will

ENMET Corporation OMNI-4000 S/N 6705 and above48Returning to Operator Mode• Remove the calibration cover• Remove the programming plug• The OMNI-400

OMNI-4000 S/N 6705 and above ENMET Corporation49Selecting the Maintenance MenuTurn the device On and position the maintenance switch towards the cente

ENMET Corporation OMNI-4000 S/N 6705 and above50Setting the ZeroThe display shows alternately:• Press ENTER to display the zero value. The display s

OMNI-4000 S/N 6705 and above ENMET Corporation51Starting the Setting Procedure:The display shows alternately:• Press ENTER to display the sensitivity

ENMET Corporation OMNI-4000 S/N 6705 and above52Returning to Operator Mode• Slide the maintenance switch to the left; refer to Figure 3-10• Replace

OMNI-4000 S/N 6705 and above ENMET Corporation533.7 Replacing the Oxygen SensorThis procedure is used when a new oxygen sensor is installed.Equipment

Figure 3-4: Table of Gases, Associated Parameters and Coefficients ...

ENMET Corporation OMNI-4000 S/N 6705 and above543.8 Replacing a Toxic Gas SensorThis procedure is used for the installation of a new toxic gas sensor.

OMNI-4000 S/N 6705 and above ENMET Corporation553.9 Changing the Date and TimeThis sub-program is used to update the OMNI-4000 internal calendar and c

ENMET Corporation OMNI-4000 S/N 6705 and above56Changing the DateThe display reads, for instance:• Move to the desired position in the date by pressi

OMNI-4000 S/N 6705 and above ENMET Corporation574.0 Appendixes4.1 Technical CharacteristicsNOTE: All specifications stated in this manual may change w

ENMET Corporation OMNI-4000 S/N 6705 and above58Measurements:Continuous for all operational sensorsSensors; Electrochemical:Interchangeable preset uni

OMNI-4000 S/N 6705 and above ENMET Corporation59Alarm InformationGeneral audio and visual alarm (display, indicator lamp)Individual channel alarms (al

ENMET Corporation OMNI-4000 S/N 6705 and above60Table 4-2: OMNI-4000 Battery Life for ConfigurationOMNI-4000 Configuration Battery Life in HoursCombus

OMNI-4000 S/N 6705 and above ENMET Corporation61Addendum: Calibration with Pump ModuleIt is highly recommended that all calibrations be done with the

ENMET Corporation OMNI-4000 S/N 6705 and above62Notes:

PO Box 979680 Fairfield CourtAnn Arbor, Michigan 48106-0979734.761.1270 Fax 734.761.3220Returning an Instrument for RepairENMET instruments may be ret

OMNI-4000 S/N 6705 and above ENMET Corporation1IntroductionThis manual has been written to facilitate the rapid and effective use of the OMNI-4000 gas

Repair Return FormMailing Address:ENMET CorporationPO Box 979Ann Arbor, Michigan 48106Phone Number: 734.761.1270FAX Number: 734.761.3220Shipping Addr

ENMET Corporation OMNI-4000 S/N 6705 and above2Upon Receipt, UnpackUnpack the OMNI-4000 and examine it for shipping damage. If such damage is observe

OMNI-4000 S/N 6705 and above ENMET Corporation3Figure 1-1: Exterior Features of OMNI-4000Figure 1-2: Features of the OMNI-4000 Control PanelFigure 1-3