Micropulse level meters

หมวดหมู่ : INSTRUMENTS TOKYO KEISO Level Measurement Level Gauges

แบรนด์ : TOKYO KEISO



  • Cable cost can be reduced by the 2-wire system.
  • TDR (Time Domain Reflectrometry) system is available for various applications.
  • Measurement in high accuracy is realized by 2-wire loop powered system.
  • Improved sensibility due to sharper pulses generated.
  • Available for temperature and pressure in wide range. Measurement in high accuracy can be made regardless of the change in temperature, pressure and density.
  • Possible to install the level meter in narrow space because the micro-pulse is propagated along the probe.
  • Easy operation with wide graphic display.


Short Specifications

Measuring objectMeasurable materials: Liquids, slurries and/or solids
(Less than 5mm of the grain diameter)
Measuring method: Time Domain Reflectrometry (TDR)
Measured variable: Level, distance, volume and/or interface
Probe type / length (Max.)Single rod probe / 3m
Twin rod probe / 3m
Single cable probe / 35m
Twin cable probe / 8m
Coaxial probe / 3m
Temperature of
process connection
-40 to +200°C
(Explosionproof type: Depending on Explosion Proof Specification)
Operating pressure0kPa(abs) to 4MPa (Based on flange rate)
Dielectric constantMore than 1.4 (Coaxial probe)
More than 1.6 (Twin rod probe, Twin cable probe)
More than 1.8 (Single rod cable, Single cable probe)

Interface measurement:
Dielectric constant of upper liquid is 1.6 to 10.
Difference of dielectric constant is over 20. (Lower liquid should be bigger.)
Thickness of interface should be over 50mm and the interface should be formed definitely.
Display9 lines 160×160 pixels in 8-step grey scale (Wide graphic display)
with 4 buttons (It is possible to operate the buttons on the cover.)
OutputOutput 1: DC4 to 20mA (HART)
Output 2: DC4 to 20mA
Level measurement: 
3mm (Less than 10m)
±0.03% R.D. (More than 10m)
Interface measurement: 
(If dielectric constant not changed.)
Power supply
Output 1: 
DC14 to 30V (Non-Ex, Ex i)
DC20 to 36V (Ex d)
Output 2: 
DC10 to 30V (Non-Ex, Ex i, Ex d)
Rod type / SS316L (Option: Hastelloy® C-22)
Cable type / SS316L
Coaxial type / SS316L (Option: Hastelloy® C-22)
FKM (-40 to +200°C) (Option: Kalrez®6375(-20 to 200°C))
Process connection: 
SS316L (Option: Hastelloy® C-22)
Process connection40A, 50A, 80A, 100A JIS10K Flange
1-1/2B, 2B, 3B, 4B, 6B, 8B 150lbRF ASME Flange
1-1/2B, 2B, 3B, 4B 300lbRF ASME Flange
3/4, 1, 1-1/2 NPT Male thread
G3/4, 1, 1-1/2 Male thread
Protection class
General type: 
IP66 (JIS0920, IEC 60529 Equivalent to Jet-proof)
Explosion-proof type: 
EEx ia IIC T6...T3
EEx d [ia] IIC T6...T3


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