Explosion-Proof Certified • ECM Approved

MODEL STEX25

Smart Temperature Transmitter with LCD

Advanced explosion-proof smart temperature transmitter with barograph/programmable LCD display and local configuration keys. Universal input supports RTD, TC, mV, and Ω sensors. Indication in P.V., mA, and %.

Ex d IIC T6 Ga Ex ia IIC T6 Ga IP67 HART Fieldbus PROFIBUS PA LCD Display 3 Config Keys

0.1°C

RTD Accuracy

1000V

Isolation

LCD

Barograph

0.6kg

Weight

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Accuracy (RTD)±0.1°C

Power Supply10.5~32 VDC

DisplayBarograph LCD

Local Config3 Keys

ConduitsTwo M20×1.5

Dimensions≈10×17×10 cm

LCD Display Features

● Barograph Display

Programmable LCD with backlight for trend visualization

● 3 Configuration Keys

Local zero, span, and damping adjustment without HART communicator

● Multi-Unit Indication

Display in P.V., mA, and % — all standard & customized engineering units

● Rotatable Display

Casing design enables display rotation and choice of cable direction

Supported Sensor Types

Sensor Type	Model	Range	Min. Range	Accuracy
Thermocouple	T	-200~400°C	25°C	±0.4°C
Thermocouple	E	-200~1000°C	25°C	±0.4°C
Thermocouple	J	-210~1200°C	25°C	±0.4°C
Thermocouple	K	-200~1372°C	25°C	±0.4°C
Thermocouple	N	-200~1300°C	25°C	±0.4°C
Thermocouple	R	0~1768°C	100°C	±0.8°C
Thermocouple	S	0~1768°C	100°C	±0.8°C
Thermocouple	B	150~1820°C	100°C	±1.0°C
RTD	PT50	-200~850°C	10°C	±0.15°C
RTD	PT100	-200~850°C	10°C	±0.15°C
RTD	PT500	-200~850°C	10°C	±0.1°C
RTD	PT1000	-200~850°C	10°C	±0.1°C
mV Input	—	-120~120mV	10mV	±10µV
mV Input	—	-1000~1000mV	50mV	±100µV
Ω Input	—	0~500Ω	100Ω	±0.2Ω
Ω Input	—	0~4500Ω	100Ω	±1.0Ω

Technical Specifications

PERFORMANCE

Accuracy (RTD)	±0.1°C
Accuracy (TC E/J/K/N/T)	±0.5°C
Accuracy (TC B/R/S)	±1.0°C
Stability (RTD)	0.01°C
Stability (TC E/J/K/N/T)	0.1°C
Stability (TC B/R/S)	0.2°C
Galvanic Isolation	1000VDC
Damping Time	0.1s ~ 32s

ELECTRICAL & ENVIRONMENTAL

Power Supply	10.5 ~ 32 VDC
Output Signal	4~20 mA DC
Communication	HART / FF / PA
Ambient Temp.	-30°C ~ +85°C
Ingress Protection	IP67
Explosion Proof	II 1G Ex d IIC T6 Ga
Intrinsic Safety	II 1G Ex ia IIC T6 Ga
Electrical Conduits	Two × M20×1.5
Enclosure Material	Aluminum (SS316/NiAlBz opt.)
Display	Barograph LCD with Backlight
Weight	≈ 0.6 kg
Dimensions	≈ 10×17×10 cm

Ordering Codes

OUTPUT SIGNAL

-H	4~20 mA + HART
-F	FOUNDATION Fieldbus H1
-P	PROFIBUS PA

SENSOR INPUT

0	Universal Input (no sensor)
1	Universal Input + Integrated Sensor

INDICATOR (LCD)

D	LCD + 3 Keys (HART/PA only)
M	LCD without keys (Fieldbus only)

Example Order Code

STEX25-H0D/A1/E6/Q5/B4

HART output • Universal input (no sensor) • LCD with keys • Lightning protector • SS316 enclosure • Material test • SS304 bracket

Available Options

PROTECTION & CERTIFICATES

/P5	IP65 (Non-Ex safe area)
/P8	Water-proof IP68
/A1	Lightning protector (Max 6000A)
/Q4	Calibration cert (3rd party)
/Q5	Material test; enclosure

MECHANICAL & ACCESSORIES

/E1	Both conduits ½" NPTF
/E6	Enclosure SS316 (C8FM)
/E7	Enclosure NiAlBz
/B2	Bracket 2" pipe (Galvanized)
/B4	Bracket 2" pipe (SS304)
/N4	Wired tag SS316 plate

⚠ Notice:

When sensor order code is "0" (without integrated sensor), the user must prepare suitable sealing for assembling the remote sensor in its conduit to achieve the desired IP rating and explosion-proof protection.

STEX25 vs STEX15 Comparison

Feature	STEX15	STEX25
Display	Optional / Without LCD	LCD Standard (Barograph)
Local Config Keys	—	3 Keys (Zero/Span/Damping)
Indication	—	P.V., mA, %
Electrical Conduits	One × M20×1.5	Two × M20×1.5
Weight	≈ 250g	≈ 0.6 kg
Dimensions	≈ 7×7×10 cm	≈ 10×17×10 cm
Lightning Protector (/A1)	—	✓ Available
Sensor Accuracy (RTD)	±0.1°C	±0.1°C
Isolation	1000VDC	1000VDC

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