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Pressure Meter
Pressure Meter
Pressure Meter

SMR01 series

Pressure Transmitter

Description
The Pressure Transmitter is connected directly via RS485 communication interface, providing simple,reliable, cost-saving process data with remote monitoring, calibration, configuration and diagnostics capabilities. Housing in a robust IP68 proof enclosure, 1500 N tensile strength Kevlar reinforced cable, up to 1.2 km digital data transmission, the transmitter is ideally used in water/wastewater industry.
Features
  • Robust IP68 Water Submersible Enclosure, Solution Without Cabinet
  • On-line Realtime Measurement
  • Ultra Low Power Consumption, Ideal for Outdoor Applications
  • Temperature Compensation
  • High Reliability, Drift Free
  • Surge Protection for Power and RS485 Communication
  • 1.2 Km RS485 Digital Communication, Minimize Cabling and Engineering Cost
  • Software Configuration Calibration and Data Monitoring
  • Standard Modbus RTU Protocol, Direct Connected with PLC,HMI, Eliminate I/O Module Cost
  • ± 0.1% High Accuracy
  • Up to ± 0.05% High Accuracy
  • Onboard memory allowing users to easily calibrate and configure sensor at lab and distribute to various fields sites
Specification
Hydrostatic Level Transmitter 
Measurement range SMR01-3: -1~10 Kgf/cm²
SMR01-5: -1~20 Kgf/cm²
Accuracy ± 0.25% FS; ± 0.1% FS (optional)
Resolution 0.01% FS
Repeatability ±0.025% FS
Stability (annual) 0.1% FS
Overload 3 X measurement range
Burst >4 X measurement range
Operating temperature -40 ~ 85 °C
Response time 1 sec
Temperature Sensor Pt100
Temperature measurement range -40 ~ 85 °C 
Temperature accuracy ±0.5 °C; ±0.1 °C (optional)
Protection IP68
Process connection 1/4" NPT
Housing sensor SS316L; Titanium
Dimension Φ24Χ 139 mm
Weight transmitter : approx. 200 g (SS316L); 80 g (Titanium)
cable: 80 g/m
General 
  • Output Signal: RS485 (Modbus RTU protocol), 19,200 bps, 8 data bits, no parity, 1 stop bit; 4~20 mA (optional)
  • Data Resolution: 16 bits (0.001% FS)
  • Surge Protection: 4000 V DC
  • Power: 3.6~12 V DC ±10%, 5 mA
  • Protection: polarity, overload, short circuit
  • Safety: CE, FCC
Typical Applications
Drinking water, stormwater groundwater, industry, water treatment, wastewater, gas petrochemical
Measurement Method
The transmitter is with a small profile, piezoresistive silicon pressure sensor packaged in a 316L stainless steel housing in a 1/4-18 NPT threaded fittings. The package utilizes silicon oil to transfer pressure from 316L stainless steel diaphragm to the sensing element. A ceramic substrate is attached to the package that contains laser-trimmed resistors for temperature compensation and off set correction.

 Ordering 
Note
Standard cable length is 3 m, customized length is available upon request
History
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