Yokogawa FS20 Fittings for pH and ORP - Manual (Page 8)

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2-3. Specifications
2-3-1. General specifications
MATERIALS
- Wetted parts
a. body : refer to model code
b. O-rings : silicone rubber
c. liquid earth sensor
(not in 1-hole subassembly) : titanium (plastic designs)
SS AISI 316 (SS designs)
- Non-wetted parts
a. mounting bracket : SS AISI 316 (SS designs)
PVC (plastic designs)
b. electrode mounting sets : Ryton R4
c. holder for calibration dish : SS AISI 316
d. calibration dish : PP
e. retaining nut for electrode holder : SS AISI 304 (excl. 3-hole plastic design)
VOLUME MEASURING VESSEL
- 3 hole-design
: 130 ml
- 4-hole design : 250 ml
PROCESS CONNECTIONS
(fittings only)
: 1 / 2 ” NPT or flange LAP-joint (DIN or ANSI).
See model code
NOMINAL PIPE SIZE FOR MOUNTING SUBASSEMBLIES
- 1-hole
: DN20
- 3-hole : DN50
- 4-hole : DN80
WEIGHT* : see table 2-1
2-3-2. Functional specifications
TEMPERATURE
- min
: -10 °C
- max. : depending on material and application (see fig. 2-2)
FLOW RATE (fittings only) : 0,1 to 10 l/min (depending on application)
PRESSURE : see fig. 2-2
Table 2-1
MATERIAL PP SS PVC PVDF
FITTING
1-hole subassembly 0,2 kg 0,1 kg
3-hole subassembly 1,2 kg 0,5 kg
4-hole subassembly 3 ,0 kg 1,4 kg
3-hole fitting 1,1 kg 2,2 kg 1,5 kg
4-hole fitting 1,4 kg 6,5 kg 1,8 kg
* The accessories are not included.
Fig. 2-2. Pressure/temperature class