Teledyne 9060L - Zirconium oxide flue gas oxygen analyzer - Manual (Page 17)

Percent Oxygen Analyzer Operational Theory
Teledyne Analytical Instruments 17
Probes of 1000 mm (40”) normally have sufficient length for any
installation. Customers requiring probes longer than 1500 mm (59”) are
supplied with a flow guide tube that uses the flue velocity to pull flue
gas through a filter at the sensing tip and exhaust it near the flue wall.
2.2.1 Probe Configuration
The probe can be configured in a variety of ways to suit the
analytical environment. Figure 2-1 shows the most common
configurable items of the probe. Not indicated is the actual
thermocouple sensing element, however, see Table 2-1. You can choose:
1. Probe insertion length (from process end of mounting thread to
probe sensing tip). See Figure 2-2.
2. Mounting thread (process connection), BST or NPT (for size of
thread refer to specifications).
3. Lagging extension length, if required.
Table 2-1 indicates typical probe options.
Table 2-1: Probe Options
Probe Length Thermocouple Sheath Thread
250 mm (10”) Type K max 900°C (1560°F) 316 SS max 850°C (1560°F) BST or NPT
350 mm (14”) Inconel
500 mm (20”)
750 mm (30”)
1000 mm (40”)
The Inconel option has all
inconel wetted parts except for
the ceramic sensor and viton
‘o’ rings
Figure 2-2: Model 9060L Probe