Honeywell STT250 Housing Specifications in mm, Aluminium Direct Head Mount Housing, B-B section

Housing Specifications (in mm)

Aluminium Direct Head Mount Housing

Suitable for general purpose or Intrinsically Safe applications. Dimensions shown in Fig. 1. Housing entry length = 41 mm Material : LM24 Aluminium die casting. Sensor entry : 1/2”NPT

Cable / conduit entry : 1/2”NPT or M20x1.5.

Weight : 0.3kg (0.7 lb)

Paint cover : beige polyester/ epoxy hybrid.

Enclosure classification : IP65

Order as STT250 Table II selection A _ _.

	1/2" NPT or M20
33	40
	2 x M3
2 x M4
	41
	1/2" NPT
B-B section	A-A section

Figure 1

Plastic Direct Head Mount Housing

Suitable for lightweight installation in salt air environments and for general purpose or Intrinsically Safe installations.

Maximum temperature = 70° C (158° F) Dimensions shown in Fig. 2.

Housing entry length = 26,5 mm Material : ABS

Sensor entry : 1/2”BSP (equivalent to 1/2”NPT)

Cable/ conduit entry : M20x1.5

Colour : light beige

Weight : 0.1kg (0.2 lb)

Enclosure classification : IP67

Order as STT250 Table II selection P _ _.

A
	85
33
57	1/2" NPT or M20
2 x M4
	26.5
	1/2" NPT
A
C-C section	A-A section

Figure 2

Cast Iron Direct Head Mount Housing

Suitable for Flame-Proof EEx d applications when sensor with flame trap is included in total assembly.

Dimensions shown in Fig. 3. Housing entry length = 41 mm Material : Cast Iron

Sensor entry : 1/2”NPT

Cable/ conduit entry : M20x1.5

paint cover : light beige

Weight : 2.5kg (5.5 lb)

Enclosure classification : IP68 Conforms to the applicable requirements of NEMA 7 and 9.

Order as STT250 Table II selection B _ _.

	(	104)
2 x M4
33	111	1/2" NPT	or M20
2 x M4
41
		1/2" NPT
B-B section		A-A section

Figure 3

2 EN0I-6032