Valmet Total Solids Transmitter

Valmet Total Solids Transmitter

Superior total solids measurement solution for wastewater

  • Description
  • Technical specifications
  • Downloads

For more than ten years Valmet’s microwavebased solid content transmitters have been used in the process industry for highly demanding applications. Valmet TS has been developed from third generation microwave solids transmitters, combining cost-efficiency with the extreme accuracy of microwave technology. The new transmitter meets the needs of wastewater treatment plants – with no compromises in accuracy. The 500 references in global waste water industry speak for the excellence.

Applications
Sludge pumping from primary & secondary sedimentations / Feed to Thickening
Sludge pumping control based on reliable total solids measurement, and thus optimising sludge quality early on in the process, is vital for the whole sludge handling procedure.

Digester feed
Maintaining a high, optimised total solids content in the sludge entering the digesters helps to achieve better process control and significant savings. Sludge digestion time can be increased to produce more biogas.

Dewatering
Significant savings can be achieved through better dewatering control: a reliable total solids measurement helps to optimise polymer dosing and thus reduce polymer costs.

Dry Cake
The Valmet TS can be installed in the feed line to the incinerator, immediately after the sludge cake pump.

DIAGRAM VALMET

Valmet Total Solids Transmitter benefits

  • Lower energy consumption in dewatering, better utilisation rate in energy production
  • Higher pumping capacity means higher water processing volumes and helps to postpone investments
  • Better utilisation of solids transportation capacity
  • Lower polymer consumption
  • Highly efficient use of dewatering centrifuges
  • Less laboratory analysis
  • Provides higher solids content in sludge

Measuring range: 0 – 40 % TS. If more than 16 % TS
Repeatability: ±0.01%Cs
Sensitivity: 0.001 %Cs
Damping: 1 to 99 s
Ambient temperature: –20…+70 °C (–4…+158 °F), protect from direct heat radiation
Sensor sizes: PN16 DN50, 80, 100, 150, 200, 250, 300 PN 100 DN100, 150, 200
ATEX Certificate: No. VTT 12 ATEX 058X, II 3G Ex nR IIC T6 Gc
Optional Glass-lined versions available

Technical benefits
In wastewater processes, microwave technology has many advantages over other types of total solids measurements:

  • The start-up and calibration performed within a few minutes.
  • No reaction to changes in the composition of solids, thus allowing reliable single-point calibration.
  • No moving parts, therefore practically maintenance- free.
  • Glass-lined sensor version available to avoid the grease build-ups in primary sludge.
  • Other selectable current output signal: either process temperature or process conductivity (ref. specifications)

Operating Unit, TCU
Enclosure class: IP 65 (NEMA 4)
Operating voltage: 90…260 VAC / 0.1 A

Valmet TS sensors
Enclosure class: IP 65 (NEMA 4)
Wetted materials: FT sensors AISI 316, AISI 316L, Ceramic gasket EPDM, Simrit 483
ATEX Certificate: No. VTT 12 ATEX 058X, II 3G Ex nR IIC T6 Gc

Outputs
Current output: Total solids 4 – 20 mA + HART® 18 to 35 VDC
Secondary output: Process temperature/Conductivity 4 – 20 mA 18 – 35 VDC

Inputs
binary inputs: 2 inputs, isolated
12 – 48 VDC
Communication: PC-connection
RS-232 PROFIBUS PA Support for
Valmet FieldCare

Process conditions
pH-range: 2.5 – 11.5
Process temperature: 0…+100 °C (+32…+212 °F)
Operating pressure: Recommended minimum process pressure >1.5 bar (22 psi), No entrained air. If less than1.5 bar (22 psi), please consult Valmet
Vibration max.: 20 m/s2, 10 – 200 Hz
Pressure rating: PN16 bar (232 psi) standard. PN100 bar (1440 psi) option for FT100/150/200 (4”/6”/8”) sensors

The following downloads are available for the Valmet Total Solids Transmitter
Download Valmet TS PDF