RKI Instruments GP-03, HS-03, CO-03, OX-03 Quick Reference Manual

World Leader in Gas Detection and Sensor Technology

03-Series Quick Reference Guide

Applies to models GP-03, HS-03, CO-03, OX-03

Turning on your instrument

• Press and hold POWER MODE button. Release it when the instrument beeps.

• When warm-up sequence is completed, the normal operating screen is displayed.

Note: If a failure occurs, press and release the POWER MODE button, the instrument cannot
be used if a sensor failure occurs. Replace the failed sensor.

• If Cal Limit Display or Bump Test Limit Display are on and calibration or bump test is due, see
operator’s manual for warm-up sequence.

Performing fresh air adjustment

• Press and hold the AIR button in a fresh air environment. The LCD will display “HOLD”.

• Release the AIR button when “ADJ” is displayed.

• The instrument will set reading to 0 ppm (HS/CO-03),
0% LEL (GP-03) or 20.9% Vol. (OX-03).

Normal operating mode

• The gas concentration is displayed.

• Battery charge level is indicated in lower left corner.

• The heart symbol displayed in the upper right corner

ashes while the instrument is functioning properly.

Turning the instrument off

• Press and hold the POWER MODE button for approximately ve seconds to turn off the unit.

RKI Instruments, Inc. 33248 Central Ave, Union City, CA 94587

Phone [phone] • [phone] • www.rkiinstruments.com

141027/1000

Gas

Battery level

Health
indicator

Gas
reading