Instruction manual

3.0 INSTALLATION SM425 INSTRUCTION MANUAL
diameter 4.5 mm: P/N K9741UX) or insert a screwdriver through the holes. When attaching or re-
attaching the protector, apply “Never Seize Nickel Special” to the threads.
<Detector with a probe protector (Model ZO21R-L--*B)>
The detector is used with a probe protector to support the probe (SM425P) when the probe length is 2.5m
or more and it is mounted horizontally.
1. Install a gasket (not provided) between the flanges. Mount the probe protector in the probe
insertion port.
2. Make sure the cell assembly mounting screws (four) at the probe tip are not loose.
3. Mount the detector so the reference gas and calibration gas inlet faces downward.
Figure 3-3 Probe protector (supporting the mounting strength)
<Detector with a probe protector (Model ZO21R-L--*B) for dust wear protection>
The detector is used with a probe protector to prevent particulate damage when gas flow exceeds 10m/s
(fine-carbon boiler or fluid-bed furnace).
1. Install a gasket (not provided) between the flanges. Mount the probe protector in the probe
insertion port. The probe protector should be installed with the notch downstream of the process
gas flow.
2. Make sure the cell assembly mounting screws (four) at the probe tip are not loose.
42500001 REV A 45