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EN0I-6032 3
316 Stainless Steel Direct Head
Mount Housing
Suitable for corrosive/ salt spray
environments and for general purpose or
Intrinsically Safe applications.
Dimensions shown in Fig. 4.
Housing entry length = 40 mm
Material : 316SS
Sensor entry : 1/2”NPT
Cable/ conduit entry : 1/2”NPT or
M20x1.5
Paint cover : none.
Weight : 1.6kg (3.5 lb)
Enclosure classification IP65
Order as STT250 Table II selection S _ _.
Flame-Proof version available.
80
40
2 x M4
33
100
1/2" NPT
or M20
1/2" NPT
B-B section A-A section
Figure 4
Meters
Honeywell’s Series STT250 Temperature Transmitters can be supplied with local or remote indication. An Analogue or
Smart meter can be mounted integral to the transmitter inside the field mount housing. Order an integral meter as part
of the model number; Table II _ _ M and _ _ S, respectively. Order a remote meter as model RMA300.
The analogue meter is a 4-20mA moving coil type and displays the temperature in 0 to 100% span.
The Smart meter accepts 4-20mA or DE protocol and displays temperature on a LCD in engineering units or 0 to
100% span. The Smart meter displays temperature in 0 to 100% span with the STT25H HART unit. Refer to 34-ST-
25-08D for more details.
The remote digital meter reads DE protocol and displays temperature on a LCD in 0 to 100% span. Refer to 34-ST-25-
07A for details.
STT250 Dimensions
Aluminium Pipe or Wall (Field) Mount Housing
Suitable for pipe or wall mounting remote from the temperature sensor, for direct sensor head mounting (in North
America), for local indication and for Explosion-Proof (FM/ CSA and Cenelec), Intrinsically Safe or general purpose
applications.
Dimensions shown in Fig. 5 and 6.
Material : Low copper Aluminium alloy
Cable/ Conduit entries : 1/2”NPT.
Paint cover : Beige polyester/ epoxy hybrid or beige epoxy painted.
Weight : 1.1kg (2.4 lb)
Enclosure classification : IP65. Conforms to the applicable requirements of NEMA 7and 9 for FM/ CSA Explosion-Proof
applications.
Order as STT250 Table II selection E _ _ or X _ _, respectively.
316 Stainless Steel Pipe or Wall (Field) Mount Housing
Suitable for corrosive/ salt spray environments and for pipe or wall mounting remote from the temperature sensor, for
direct sensor head mounting (in North America), for local indication and for Explosion-Proof (FM/ CSA and Cenelec),
Intrinsically Safe or general purpose applications.
Dimensions shown in Fig. 5 and 6.
Material : 316SS
Cable/ Conduit entries : 1/2”NPT. 3/4” NPT or M20 available via an adaptor.
Paint cover : none.
Weight : 3.2 kg (6.9 lb)
Enclosure classification : IP65
Order as STT250 Table II selection T _ _.