Product Details
PNP 4-20mA Rotable Electronic Digital Temperature Switch with
Modbus Protocol
The temperature switch STS is robustly designed and very easy to
use. The STS is suited for temperature monitoring, measurement and
control, such as used in cleaning liquid, hydraulic oil,
heat-carrying agent and lubricant etc. It is temperature switch,
transmitter and display in one and the same device. In its standard
configuration it has optional two switching outputs (PNP or NPN),
an analog output signal (0...20mA| 4…20 mA or 0...5V| 0…10 V) as
well as with RS485 Link.
STS temperature switch supports PT100 or PT1000, it is with high
measuring accuracy of 0.5℃. STS offers various functions including
switch delay, switch point settable, display environment
temperature, housing and display turnable and rotatable.
Feature:
- Support PT100 or PT1000 input
- Current output is 4~20mA+2PNP+MODBUS; voltage output is 0~5V/10V+
2PNP+ MODBUS
- Switching points settable
- Analog output span settable
- OLED self-luminous display
- Display reversing 180°
- Switching can be set normally open / normally closed
- Housing with electrical connection against process connection
rotatable 330°
- Displaying temperature peak value and environment temperature
- Parameters setting for Password protection
- MODBUS protocol optional
Technical Data:
Measuring range | -50~260℃ |
Accuracy | ≤0.5℃ |
Supply Power | 12-30V DC |
Temp. Error | ±0.02%FS/℃ |
Long-term Stability | ±0.3%FS/Year |
Analog output accuracy | ±0.2%FS |
Measuring Media | Water, mineral-based hydraulic fluid and Synthetic oil |
Wetted material | Stainless steel, Nitrile Butadiene Rubber and PTFE |
Output Configurations
| switching+voltage+ communication | 2×PNP + 0V~5VDC/10VDC + MODBUS |
switching+current+ communication | 2×PNP + 0mA/4mA~20mADC + MODBUS |
Switching current | 1.0A(Max.) |
Switching type | normally open , normally closed (settable) |
Switching respond time | <10ms |
Switching delay | 0.00s~1000.0s |
Switching motion mode | delay or windows mode |
Analog signal output and maximum ohmic load RL | Current output | 0/4…20mA,20…4/0mA RL≤0.5kΩ |
Voltage output | 0…5/10V,5/10…0V RL>10kΩ |
Screen display | OLED |
Menu language | Chinese,English |
Switching instruction | 2X Red LED |
Displaying pressure units | kPa, mm, cm, m |
Working temperature | -30℃~80℃ |
Media temperature | 0℃~60℃ |
Storage temperature | -40℃~80℃ |
Electromagnetism compatible | GB/T 17626.2/3/4-2006 |
Shock resistance | ≤10g/10Hz...500Hz(IEC 60068-2-6-2007) |
Vibration resistance | ≤50g/11ms(IEC 60068-2-27-2008) |
Protection Rating | IP65 / IP68 |
Ordering sheet:
Company Profile
Founded in 2004, HEFEI WNK SMART TECHNOLOGY CO., LTD is a hi-tech
company specializing in different kinds of technologically-advanced
and good quality sensor, transmitter and automation instrument. We
devote to developing, manufacturing and selling of automation
control system, providing our customers comprehensive fieldbus
technical solutions and factory informatization construction.

Our main products include iEOS industrial cloud data base
developing plate form; industrial Internet of Things; WNK-WMS
industrial wireless measurement system; onsite measurement
instruments like temperature, pressure, flow, level sensor and
transmitter etc, widely applied in Petrochemical, Chemical, Power,
Steel and Cement.

WNK is the third company in China developed PROFIBUS transmitters.
WNK series PROFIBUS transmitter is the fourth in China certificated
by international PROFIBUS organization, and Chinese first that
completely having proprietary intellectual property rights. WNK
PROFIBUS-PA temperature transmitters filled Chinese blank
technology in the field.

With strict, scientific management system, WNK has been
certificated to conform to standard GB/T 19001-2008 / ISO 9001:2008
by CHINA CLASSIFICATION SOCIETY CERTIFICATION COMPANY. WNK commits
to developing of new products and technical innovation. With
continuously effort in advanced technology of automation control
system, WNK has been undertaking some innovation projects of MST
(Ministry of Science and Technology), and has been honored as
promising enterprise of “Giant of Technology ”in Hefei Hi-tech
Industry Development Zone.

As Chinese first and unique qualified production enterprise of
0.075% measurement in Anhui, WNK brand was awarded Anhui Famous
Brand.
