Yokogawa AC8 Calibration Units - Manual (Page 11)

11
IM 11M06D03-01E-A
4.3.3 CONNECTION TO THE REFERENCE GAS INLET
Connect the tubing from the Reference gas output, shown in Figure 4.3, to the REF IN side of the ZR22 probe. Clean,
dry instrument air is recommended as a reference (span) gas; however, ambient air may be used as a substitute.
Figure 4.1
A list of recommended part for piping to the MC1 or AC1 units is listed below in Table 3.1
Calibration Unit Piping
Location
Parts Notes
Check valve
Recommended by Yokogawa for positive
pressure applications: M1234VV-A.
Available through Yokogawa
Nipple Rc 1/4 or 1/4 inch MNPT
General
parts
Zero Gas Cylinder User’s Scope
Gas Pressure
Regulator
Recommended by Yokogawa: M1132KD
Regulator, and M1132ME Gauge.
Available through Yokogawa
Calibration Gas
Inlet
Zero Gas Pressure
Switch
Recommended by Yokogawa: M1133AR
Available through Yokogawa
MC1 Manual Calibration
Unit
AC1 Single Channel
Automatic Calibration
Unit
Reference gas
inlet
Joint for tube
connection
Rc 1/4 or 1/4 inch MNPT
General
parts
INSTRUMENT AIR
INPUT
ZERO (CAL)
GAS INPUT
REFERENCE AIR
OUTPUT
CALIBRATION
GAS OUTPUT
Figure 4.1