FW-9000N Series

FW-9000N series tank gauge is the successor to the well received and widely used FW-9000 series for its reliability and variety of application. Making the most of reliable, durable and highly accurate mechanism of FW-9000, FW-9000N has become more reliable and user-friendly by improving performances. Consequently, FW-9000N has the interchangeability with current FW-9000 series in terms of installation methods and interfaces with other equipment. Its noise resistivity and lightening protection performance have improved significantly. The intensified automatic self-diagnosis and self-adjustment functions have made FW9000N more user-friendly.
Very small flow rate can be covered:  Min. 0 - 0.5 L/h [Water] can be measured.  
 Alarm output option available:    In addition to local indication type, alarm output version is also available.
 Compact design:   Easy installation onto instrument panel.
 Safety for high temperature and pressure: All metallic material construction covers tough applications!


Mechanical specifications
Liquid level
detection methods
Digital controlled electric servo balancing type consisting of small size displacer, measuring wire and wire drum
Measuring range Maximu: 60m
Temperature Liquid: -200 to +300°C
Ambient: -20 to +55°C (Temperature of main body)

However, the liquid and the moisture inside the wire drum room shall not freeze over, nor adhere.
*Not suitable for the use environment where the mass of displacer changes.
Pressure Maximum: 3MPa
(1) Liquid level measurement
ρ: Density of liquid to be measured
A : Cross section area of displacer (cm2)
L : Measuring range (m)
b : Coefficient Standard ball bearing spec. (Shaft dia.Ø3) b=1,
PTFE Shaft spec. (Shaft dia.Ø3) b=2
(2) Interface measurement
In case of density difference of 0.2
±(1.7·a + 0.06L)mm
a: coefficient depending on interface conditions 1 to 5
(3) Density measurement : ±0.01g/cm3
*Under reference conditions.
3", 4", 5", 6" JIS5K/10K/20K/30KRF, ANSI150/300, JPI150/300 Flange connection
Displacer guiding Stand pipe method as standard,
Non-guiding and guide wire methods as an option


Electrical and software specifications
a. Temperature: Pt100Ω spot temp. sensor, Average temp. sensor, Multi-spot average temp. senor
b. Analog signal: 4 to 20mA DC 1point. Conversion accuracy ±0.5% F.S.
a. Serial data output to control room
b. Serial data output to explosion-proof tank side receiver
c. Contact outputs Numbers of contacts: 2
Combination: SPST (1a or 1b)
d. Analog outputs: 2 points of 4 to 20mADC for level and temperature
Presentation 2 indication parts by LCD
Enclosure Water-tight (FW-9····NW) or Flameproof Exd II CT6 (FW-9····NE)
Power supply AC100 to 240V、50/60Hz
Consumption Maximum 25VA