Submersible IP68 RS485 1M Submersible Liquid Level Transmitter

Place of Origin China
Brand Name Sier
Certification CE,RoHS
Model Number SPT21WC
Minimum Order Quantity 1piece
Price USD40~80/ Piece
Packaging Details Carton
Delivery Time 7
Payment Terms T/T, Western Union
Supply Ability 5000 pieces each month
Product Details
Housing SS304 O-ring Viton
Cable φ7.5mm Polyethylene Cable Or Polyurethane Cable For Options Diaphragm SS316L
Accuracy 0.5%FS Overpressure 2 Times FS
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IP68 1M Submersible Liquid Level Transmitter


IP68 submersible water pressure sensor


RS485 Submersible Liquid Level Transmitter

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Product Description

Submersible IP68 RS485 1M Submersible Liquid Level Transmitter 0

SPT21WC Level Transmitter

FeaturesSubmersible IP68 RS485 1M Submersible Liquid Level Transmitter 1

·Integrated construction, unnecessary to do outer adjustment

·Sensor housing protection IP68

·Cost-efficient, high reliability and stability

·Compact size;



SPT21W is full sealed submersible level transmitter. It is made by building in high stable and reliable OEM piezo-resistive pressure sensor and high accurate circuit board into the stainless steel housing. Integrated construction and standard signal provide the user easy and convenient application in the local working place. The special cable connects with housing, can be immerged into the media for a long time.

SPT21W level transmitter has compact size, light weight and good stability; it can be used for water or liquid measure and control of medicine, metallurgy, electricity, mine, city water supply and drainage and hydrology, etc.



Range(FS) 1 2 5 10 20 50 100 200mWC
Overpressure 2 times FS
Accuracy 0.5%FS
Stability range>20mH2O, ±0.2%FS/year
range≤20mH2O, 20mmWC
Thermal drift                                    offset               span
range>10mWC   0.02%FS/℃      0.05%FS/℃
range≤10mWC     0.05%FS/℃      0.05%FS/℃
Application temp. range -10~80℃
Storage temp. range -40~100℃
Power supply 11~28VDC
Output signal 4~20mADC(2-wire)
Load (Ω) <(U-11)/0.02

Construction Material

Housing: stainless steel 1Cr18Ni9Ti

O-ring: Viton

Cable: φ7.5mm polyethylene cable or polyurethane cable for options

Diaphragm: stainless steel 316L

Outline Dimension

Submersible IP68 RS485 1M Submersible Liquid Level Transmitter 2


Electric Connection

Wire color Connection
Black 0V/+OUT
Red +V


Order Guide


Submersible IP68 RS485 1M Submersible Liquid Level Transmitter 3

Order Note:

  • Please pay attention that the medium should be compatible with the contacted parts; please inform the density of the media (except water);
  • Two kinds of cable are optional, polyurethane and polyethylene. The default is polyethylene. Polyurethane cable is more flexible and endurable; it can be selected due to the requirement;
  • When the product is used in thunder storm area, we suggest the user to use protection device to protect the product and power grounding reliably;
  • For special requirement, please feel free to contact us.