Hydrostatic Pressure Transmitter for Level Measurement (FKE, FKB, & FKD)

The high-precision hydrostatic level transmitters FKE, FKB and FKD accurately measure the liquid level. The measuring cell converts to a proportional 4-20 mA electrical output signal. The heart of the measuring element is a micro-capacitive silicon transducer that has proven itself in the process industry. The digital signal processing performed by the electronic unit and its components provides outstanding characteristics in terms of accuracy and stability.

Technical advantages

  • Outstanding accuracy and long-term stability
  • Modular design
  • Minimal environmental influence
  • HART communication protocol
  • Flexibility of use
  • Integrated linearisation function

Specifications

Type FKE FKB FKD
Case type L type, T type L type, T type L type, T type
Maximum span

(kPa)

1

6

32

130

500

3000

130

500

3000

10000

50000

 

32

130

500

3000

20000

 

Weight in kg

(No indicator)

2-19 4-18 9-19
Accuracy rating +/- 0.04% (option) /+/- 0.065% (standard) *Refer to the data sheets for details +/- 0.04% (option) /+/- 0.065% (standard) *Refer to the data sheets for details +/- 0.04% (option) /+/- 0.065% (standard) *Refer to the data sheets for details
Diaphragm

materials

SS 316L

Hastelloy-C

Monel

Titanium

Zirconium

SS 316L gold-plated

SS 316L

Hastelloy-C

Monel

Titanium

Zirconium

SS 316L gold-plated

SS 316L

Hastelloy-C

Monel

Titanium

Zirconium

SS 316L gold-plated

 

Elevation/

Suppression

-100 to +100% URL -100 to +100% URL -100 to +100% URL
Span setting range 1 to 1/100 URL 1 to 1/100 URL 1 to 1/100 URL
Measuring cycle 40ms 40ms 40ms
Temperature range Process side: -40 to +120ÅãC (version for higher temperature available) Ambient temperature: -40 to 85ÅãC Process side: -40 to +120ÅãC (version for higher temperature available) Ambient temperature: -40 to 85ÅãC Process side: -40 to +120ÅãC (version for higher temperature available) Ambient temperature: -40 to 85ÅãC
Power supply

voltage

10.5 to 45V DC 10.5 to 45V DC 10.5 to 45V DC
Output signal /

Allowable load

resistance

4-20 mA / 250 Ω nominal 4-20 mA / 250 Ω nominal 4-20 mA / 250 Ω nominal
Communication

protocol

HARTTM 7 protocol HARTTM 7 protocol HARTTM 7 protocol
Power supply voltage 100, 110, 115, 200, 230 V AC, 50/60 Hz 100, 110, 115, 200, 230 V AC, 50/60 Hz 100, 110, 115, 200, 230 V AC, 50/60 Hz
Damping time

constant

Configurable between 0,04 to 32 s Configurable between 0,04 to 32 s Configurable between 0,04 to 32 s
Zero/span

adjustment

With the external adjustment screw, the three button indicator or the HARTTM communication protocol With the external adjustment screw, the three button indicator or the HARTTM communication protocol With the external adjustment screw, the three button indicator or the HARTTM communication protocol
Electrical conduit M20x5″ / 1/2 -14 NPT / Pg13.5 M20x5″ / 1/2 -14 NPT / Pg13.5 M20x5″ / 1/2 -14 NPT / Pg13.5
Options Digital indicator, degreasing treatment, oxygen service, chlorine service, extra stainless steel tag plate Digital indicator, degreasing treatment, oxygen service, chlorine service, extra stainless steel tag plate Digital indicator, degreasing treatment, oxygen service, chlorine service, extra stainless steel tag plate

Hydrostatic Pressure Transmitter for Level Measurement (FKE, FKB, & FKD)