Rki-instruments GX-82A Manuel d'utilisateur Page 1

INSTRUCTION MANUALMODEL GX-82APORTABLE THREE GAS DETECTORRKI Instruments, Inc.33248 Central Ave. Union City CA 94587 • Tel: 510-441-5656

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 7OPERATIONPreparationNormally the GX-82A requires little preparation before use. To instal

Model GX-82A Instruction Manual8 Hayward, California (510) 441-5656c.This message shows to verify that the data logger circuits are set properly for a

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 9operation.HC O2 H2SOK

Model GX-82A Instruction Manual10 Hayward, California (510) 441-56562. Verify OperationTo easily verify correct operation of the GX-82A, breathe out o

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 11response.

Model GX-82A Instruction Manual12 Hayward, California (510) 441-5656DISPLAY FUNCTIONSWhile the GX-82A is in normal operation, press the DISPLAY/(ADJ.)

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 13until a higher level is detected, the data logger is cleared, or the unit is turned off.

Model GX-82A Instruction Manual14 Hayward, California (510) 441-5656Time-Weighted Average (TWA)The TWA function shows the average reading for toxic ga

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 15Clear Data LoggerThe Clear Data Logger function allows the user to reset the data logger

Model GX-82A Instruction Manual16 Hayward, California (510) 441-5656ALARMSAlarm Indications1. Combustibles (%LEL)If the combustible gas detected excee

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. Table of ContentsTable of ContentsINTRODUCTION 1DESCRIPTION 2COMPONENTS AND CONTROLS 3C

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 175. STEL (toxics only)If the average toxic gas level detected over the last 15 minutes ex

Model GX-82A Instruction Manual18 Hayward, California (510) 441-5656Malfunction Alarm and Emergency OperationThe GX-82A continuously monitors itself f

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 19Low Battery AlarmWhen the battery charge drops near the lower limit, the display will sh

Model GX-82A Instruction Manual20 Hayward, California (510) 441-5656CALIBRATION AND MAINTENANCEThe GX-82A’s microprocessor circuits provide advanced c

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 213. Demand ZeroPress and hold the AIR/▲ switch on the control panel until a tone sounds.

Model GX-82A Instruction Manual22 Hayward, California (510) 441-56562. Enter calibration modeWith the instrument on, press and hold the (SHIFT)/▼ swit

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 23Cylinder.To change the calibration values, press the (SHIFT)/▼ and DISPLAY/(ADJ.). The f

Model GX-82A Instruction Manual24 Hayward, California (510) 441-5656END screen will appear:d.After the end screen, the display automatically returns t

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 25reading stabilizes:3. If the reading does not correspond to the sample, press the AIR/▲

Model GX-82A Instruction Manual26 Hayward, California (510) 441-56564. The reading should fall to near zero for an oxygen-free sample, or near the lev

Model GX-82A Instruction ManualTable of Contents Hayward, California (510) 441-5656MAINTENANCE 25Batteries 25Sensor Maintenance 26Combustibles Sens

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 27H2S and CO Span1. Connect a H2S or CO calibration cylinder to the adapter.2. From the ca

Model GX-82A Instruction Manual28 Hayward, California (510) 441-5656MAINTENANCEBatteries1. Check the battery voltage periodically by pressing the DISP

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 293. Bias Current DischargeThe batteries continuously supply a small current to maintain t

Model GX-82A Instruction Manual30 Hayward, California (510) 441-5656O2 SensorReplace the O2 sensor when:1. The O2 circuit cannot be set to 00.0% on an

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 314. To replace individual sensors, press down and turn counter-clock-wise, then pull out

Model GX-82A Instruction Manual32 Hayward, California (510) 441-5656ACCESSORIESExtender CableThe Extender Cable extends the sensor block up to 10 mete

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 33sensor cover, then slide the pump into place. Make sure the pump housing seats and clips

Model GX-82A Instruction Manual34 Hayward, California (510) 441-5656requirements for portable sample-drawn monitoring.1. Assemble the probe, hose, bul

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 35USER OPTIONSThe advanced microprocessor program in the GX-82A allows the user to select

Model GX-82A Instruction Manual36 Hayward, California (510) 441-5656SET DEF. NVRAM1. “DEF. SET ALL”The first option allows the user to reset all values

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 1INTRODUCTIONThe RKI Model GX-82A is an advanced gas detection instrument, incorporating p

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 373. “SET ALARM <H2S> or <CO>”Prompts changes for LOW, TWA, STL, and CLG (ceil

Model GX-82A Instruction Manual38 Hayward, California (510) 441-5656LATCHING ALARMToggles the instrument alarm logic between self-resetting (default)

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 39AUTO CAL.The procedure is the same as described in Calibration and Maintenance, Auto Cal

Model GX-82A Instruction Manual40 Hayward, California (510) 441-5656WARRANTYRKI Instruments, Inc. warranties gas alarm equipment manufactured by Riken

Model GX-82A Instruction Manual2 Hayward, California (510) 441-5656DESCRIPTIONThe RKI Model GX-82A detects combustible gas (LEL), oxygen deficiency (O2

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 3COMPONENTS AND CONTROLSCaseThe GX-82A has a durable plastic case. The sensors are housed

Model GX-82A Instruction Manual4 Hayward, California (510) 441-56562. AIR/▲The AIR/▲ switch activates the GX-82A’s Demand Zero function, which automat

Model GX-82A Instruction Manual062796 RKI Instruments, Inc. 5analysis programs.Buzzers and EarphoneAn electronic buzzer is mounted at the back of the

Model GX-82A Instruction Manual6 Hayward, California (510) 441-5656Oxygen SensorThe O2 sensor is an electrochemical cell, which reacts to the oxygen i