RKI Instruments, Inc. • 33248 Central Ave. Union City, CA 94587 • (510) 441-5656Instruction ManualModel GX-86Portable Four Gas MonitorPart Number: 71

6 • Operation Model GX-86 Instruction Manual Normal Operation The GX-86 continuously monitors the atmosphere and displays the LEL, O 2 , H 2 S, and

Model GX-86 Instruction Manual Operation • 7 Alarms This section describes the GX-86’s gas alarms. Table 3 lists the low and high alarm levels for

8 • Operation Model GX-86 Instruction Manual Safety Self-Check The GX-86 continuously monitors itself for proper operation. If a malfunction occurs

Model GX-86 Instruction Manual Calibration • 9CalibrationThe GX-86’s microprocessor circuits require only a few user adjustments: combustibles span,

10 • Calibration Model GX-86 Instruction ManualNOTE: The combustibles measurement is flow-sensitive. If you are using a dispensing valve instead of a

Model GX-86 Instruction Manual Calibration • 11Calibration with the RKI Four-Gas CylinderA specially mixed cylinder of gases is available from RKI In

12 • Maintenance Model GX-86 Instruction ManualMaintenanceBatteries1. Check the battery voltage periodically by pressing the BATT button. Replace the

Model GX-86 Instruction Manual Maintenance • 13O2 sensorReplace the O2 sensor when:• the O2 circuit cannot be set to 0.0 on an oxygen-free sample• th

14 • Accessories Model GX-86 Instruction ManualAccessoriesExtender CableThe extender cable extends the sensor block up to 10 meters from the GX-86. Y

Model GX-86 Instruction Manual Accessories • 154. With the vinyl case on the GX-86, slide the adapter into place over the sensor cover.5. Start-up th

ii • Warranty Model GX-86 Operator’s ManualWarrantyRKI Instruments, Inc., warranties gas alarm equipment manufactured by RKI and sold by RKI to be fr

16 • Appendix A: Parts List Model GX-86 Instruction ManualAppendix A: Parts ListTable 5: GX-86 Parts ListPart Number Description21-1070RK Battery cov

Model GX-86 Instruction Manual Appendix B: RKI Model GX-86 Relative Response Chart • 17Appendix B:RKI Model GX-86 Relative Response ChartNOTE: The fo

18 • Appendix B: RKI Model GX-86 Relative Response Chart Model GX-86 Instruction Manual

Model GX-86 Operator’s Manual Table of Contents • iiiTable of ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iv Model GX-86 Operator’s Manual

Model GX-86 Instruction Manual Introduction • 1 Introduction The RKI Model GX-86 is a proven gas detection instrument, in use internationally for p

2 • Components and Controls Model GX-86 Instruction Manual Components and Controls This section describes the GX-86’s components and user controls.

Model GX-86 Instruction Manual Components and Controls • 3 CO and H 2 S sensors The CO and H 2 S sensors are physically identical, except for their

4 • Components and Controls Model GX-86 Instruction Manual Control Panel The control panel is at the top of the GX-86 for easy access when you carr

Model GX-86 Instruction Manual Operation • 5 Operation Preparation Normally the GX-86 requires no preparation before use. To attach the sensor exte