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Tri-clamp caps with PG13.5 probe ports (12 mm pH, dissolved O₂ and CO₂ probes): 1½ to 4 in

Name: Tri-clamp caps with PG13.5 probe ports (12 mm pH, dissolved O₂ and CO₂ probes): 1½ to 4 in dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

How do I mount a 12 mm pH probe on a tri-clamp? · Hardware · basis: Xem Studio design on the standard solid cap: PG13.5 (DIN 40430: Ø20.4 major, 1.41 pitch, Ø18.6 core) in a Ø30 boss, drawn as the core bore over 12 mm of thread, Ø12.5 through for the 12 mm probe shaft

Exact dimensions. True size, with no printing tolerance added.

sizes: 5 in table

Notes

Most process probes (pH, ORP, dissolved oxygen, dissolved CO₂, conductivity) are 12 mm shafts with a PG13.5 thread on the head: they screw straight into this port and seal on their own O-ring.
Probe length sets how deep the tip reaches below the clamp face; pick the probe so its tip sits in the liquid at your lowest fill.
Every clamp face is the ISO 2852 profile used across this site: 2.85 mm rim, flat face with the gasket groove (K 1.6 deep, R3 1.2 bottom, 23° walls, P2 0.8 edges) on C2, 20° back cone. Flange C3 / groove C2 / tube OD × wall, mm: ½–¾ in 25.0 / 20.4 (derived) / 12.7–19.05 × 1.65; 1–1½ in 50.5 / 43.5 / 25.4–38.1 × 1.65; 2 in 64.0 / 56.5 / 50.8 × 1.65; 2½ in 77.5 / 70.5 / 63.5 × 1.65; 3 in 91.0 / 83.5 / 76.2 × 1.65; 4 in 119.0 / 110.0 / 101.6 × 2.11; 6 in 166.9 (6.570 in) / 156.5 / 152.4 × 2.77; 8 in 217.7 (8.570 in) / 207.0 / 203.2 × 2.77; 10 in 268.5 / 261.0 / 254.0 × 3.40; 12 in 319.3 / 311.8 / 304.8 × 3.40.

Sizes

clamp	ports	pg_major_mm	core_mm	probe_mm
1–1½	1	20.4	18.6	12.0
2	1	20.4	18.6	12.0
3	2	20.4	18.6	12.0
3	3	20.4	18.6	12.0
4	3	20.4	18.6	12.0

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

DIN	DIN 40430 Pg (Panzergewinde) threads: PG13.5 Ø20.4 major, 1.41 pitch (18 tpi), Ø18.6 core; the thread of 12 mm process probes (pH, dissolved O2 / CO2)	standard	DIN; dimensions are facts verify
GW Kent	Tri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thickness	web	publisher's guide; dimensions cited
Rubber Fab	Tri-Clamp gasket dimensional chart: gasket ID, OD and bead diameter per size (2 in bead 2.22 in / 56.50 mm, 1.5 in 1.71 / 43.50, 3 in 3.29 / 83.50)	PDF	maker chart; dimensions are facts verify

Free files

★ Free files 5 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

pg13-5-cap-1.5in-x1	1–1½ in cap with 1 × PG13.5 probe port: boss Ø30 × 16, core bore Ø18.6 × 12 (thread), Ø12.5 through	STEP · STL
pg13-5-cap-2in-x1	2 in cap with 1 × PG13.5 probe port: boss Ø30 × 16, core bore Ø18.6 × 12 (thread), Ø12.5 through	STEP · STL
pg13-5-cap-3in-x2	3 in cap with 2 × PG13.5 probe port: boss Ø30 × 16, core bore Ø18.6 × 12 (thread), Ø12.5 through	STEP · STL
pg13-5-cap-3in-x3	3 in cap with 3 × PG13.5 probe port: boss Ø30 × 16, core bore Ø18.6 × 12 (thread), Ø12.5 through	STEP · STL
pg13-5-cap-4in-x3	4 in cap with 3 × PG13.5 probe port: boss Ø30 × 16, core bore Ø18.6 × 12 (thread), Ø12.5 through	STEP · STL