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 |