ENMETENMET CorporationPO Box 979Ann Arbor, MI 48106-097980003-01012-31-91MCN 204, 02/05/99MCN 212, 03/29/99MCN-294, 03/07/03MCN-304, 10/17/03ISA-44RAL

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD63.2 Internal Electronic CircuitryFigure 2 shows the circuit board and terminal blocks housed inside the

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation73.2.1 CO CircuitRefer to Figure 2PURGE ADJUSTPOTENTIOMETERAdjusts purge voltage. Operation switch must

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD83.3 Sample Head AssemblyThe sample head connects to a compressed air line. This unit continuously monit

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation94.0 Installation4.0 InstallationAfter becoming familiar with the main parts and their functions, follow

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD105. Apply 115 Vac and/or 12 Vdc power to the appropriate terminals (refer to Figure 2). As an emergency

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation115.2 Oxygen Detection ChannelAfter installation is completed, the oxygen meter must be adjusted to a cle

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD125.3.2 Air Quality and Pressure AdjustmentsFor the OXYGEN DETECTION CHANNEL: Atmospheric conditions and

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation136.0 Calibration6.0 Calibration6.1 Carbon Monoxide Detection Channel CalibrationThe following procedure

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD146. Turn operation switch to HORN OFF. Open the regulator on the top of the high-level calibration gas

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation156.2 Oxygen Circuit CalibrationRefer to Figure 2This procedure is given in reference to an S-2 cell, whi

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD167.0 Routine Maintenance7.0 Routine MaintenanceSince the ISA-44RAL-OD/RAH-OD is a safety instrument, it

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation177.3 Oxygen Cell ReplacementThe oxygen fuel cell has a six-month warranty. The average lifetime of the

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD187.4 Hydrocarbon Filter ReplacementThe charcoal absorption filter for hydrocarbons will need periodic re

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation199.0 Warranty9.0 WarrantyENMET warrants new instruments to be free from defects in workmanship and mater

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD20Notes:

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

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

Table of Contents1.0 INTRODUCTION...

List of Figures and TablesFIGURE 1A: SAMPLE HEAD ASSEMBLY, TYPICAL HIGH PRESSURE HOOK-UP ...

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation11.0 Introduction1.0 IntroductionSandblasting, welding and spray painting are examples of activities that

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD21.2 ISA-44RAH-ODThe ISA-44RAH-OD is designed to monitor breathing air from cylinders at pressures up to

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation32.0 Upon Receipt2.0 Upon Receipt2.1 UnpackUnpack the ISA-44RAL(RAH)OD and examine it for shipping damage

ENMET Corporation ISA-44RAL-OD / ISA-44RAH-OD43.0 Features / Definition of Parts3.0 Features / Definition of Parts3.1 Electronics Control Unit3.1.1 Ca

ISA-44RAL-OD / ISA-44RAH-OD ENMET Corporation5Figure 1: Control Unit FeaturesOxygen PowerLight (Green)Oxygen AlarmLight (Amber)Oxygen MeterOxygen Gain