7. Maintenance 7-2. Performing calibration
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7-2. Performing calibration
The product can be calibrated using AUTO calibration with preset gas concentrations, in addition to air calibration
performed in the atmosphere.
Calibration requires dedicated tools and a calibration gas. Contact Riken Keiki before performing calibration.
7-2-1. Preparation for calibration
Prepare the following equipment and calibration gases, then connect to this product:
<Required equipment>
Gas set
(Gas sampling bag, tube (length not exceeding 1 m), pump with flow adjuster function (a pump, flow gauge, and
needle can also be used.))
Calibration adapter
Stopwatch
<Calibration gases and recommended gas concentrations>
The calibration gases and recommended gas concentrations are as follows. (Domestic standard)
Model Calibration gas Recommended value
OX-04G, OX-04 N
2
99.9 % or more
CO-04 CO (N
2
-based) 80 ppm
HS-04 H
2
S (N
2
-based) 16 ppm
CO-04 (C-)
CO (N
2
-based) 80 ppm
H
2
(air-based)
*
500 ppm
*H
2
(air-based) must be calibrated at ambient temperatures ranging from 10 °C to 30 °C.