Sample Request

STW

Temperature Sensor & Transmitter

wall type, PT & NTC type sensing elements, transmitters

STx Series Temperature Sensors and Transmitters are especially used for HVAC Systems as supply or extract air temperature sensors. The device can be used as limit, reference, or measuring sensor. The basic advantages are easy mounting, high protection class‐IP65, screwless electrical connector. There are many types of thermistors and RTD’s such as PT100, PT1000, NTC10k, NTC20k, NTC3k, NTC1,8k. Also transmitters have 4‐20mA, 0‐5V, 1‐5V, 0‐10V and 2‐10V outputs.

•  Maintenance free PT and NTC sensing elements
•  0…10 V output with AC 24 V or DC14.5…35 V power supply
•  4-20 mA, 2-wired output with DC14.5…35 V power supply
•  Simple and fast mounting
•  Screwless cover and electrical terminals
•  3 Segment display option

Electrical
Power Supply : AC 24V  (± %5), 50-60 Hz or DC 14.5…35 V
Power Consumption : max. 1.5 W

Outputs
NTC or PT Types: check the RT tables
current: 4…20 mA, maximum 500 ohm
voltage: 0…10V DC, minimum 1.000 ohm

Accuracy
NTC: 0.5°C around 25°C
PT: 0.3°C around 0°C
0-10 V: 0.3°C between 0°C…50°C
4-20 mA: 0.3°C between 0°C…100°C

General Data
Sensing Element : NTC or PT
Operating Temperature NTC:  -40 …+125°C
Operating Temperature NTC:  -50 …+250°C
Storage Temperature : -30 …+85°C

Ranges
0-10 V: Set at the factory upon customer’s request
4-20 mA: Set at the factory upon customer’s request

Connections
Terminals : Spring clamp terminal
Cable : maximum 2.5 mm2
Cable Gland : M16 or PG9

Protection
IP class : IP65
NEMA class : 4

Standards
EMC Directive : EN 61326-1
CE Conformity : 0616CE.01

Dimensions
Housing : 69.0 x 40.0 x 30.0 mm
Weight Packed : 60 gr

NTC Termistors

STW.11 … NTC 1.8k
STW.12 … NTC 2.2k
STW.13 … NTC 3k
STW.14 … NTC 5k
STW.15 … NTC 10k
STW.16 … NTC 20k

RTD Elements

STW.21 … PT100
STW.22 … PT1000
STW.23 … Ni1000

mA Output

STW.31 … 4-20 mA, 2-wire
STW.32 … 4-20 mA, 3-wire

V Output

STW.41 … 0-10V
STW.42 … 2-10V
STW.43 … 0-5V
STW.44 … 1-5V

Special Requests

other elements and features are on request

Related Products

STD
Temperature Sensor & Transmitter

duct type, PT & NTC type sensing elements, transmitters

STI
Temperature Sensor & Transmitter

immersion type, PT & NTC type sensing elements, transmitters

STR
Temperature Sensor & Transmitter

room type, PT & NTC type sensing elements, transmitters

STC
Temperature Sensor & Transmitter

clamp-on type, PT & NTC type sensing elements, transmitters

STO
Temperature Sensor & Transmitter

outdoor type, PT & NTC type sensing elements, transmitters