Six families of direct-reading tank gauge from Hanla IMS — reflex and tubular glass columns built to the SOLAS amendments, JIS marine float gauges, magnetic flag indicators, self-powered content gauges and dial float gauges. Sight-glass columns run to 5,100 mm centre to centre; content gauges cover tank depths from 1 to 12 m.
On this page
- Flat type glass level gauge›
- Tubular type glass level gauge›
- Marine float type level gauge›
- Magnetic float type level gauge›
- Self-powered content gauge›
- Dial type float level gauge›
- Choosing a gauge›
Flat type glass level gauge
Model: RLG series. Toughened borosilicate glass housed in a stainless steel column. Reflex viewing windows give a clear reading even on colourless liquids. The gauges are built to the requirements of the SOLAS 1981, 1983, 1996, 1997 and 1998 amendments, and the construction is accepted by the marine classification societies. Patented design, patent no. 015089.
On the LP series the liquid chambers can be cleaned with the gauge still mounted on the tank, and the isolating valves allow the column to be removed without draining the tank. Used on water tanks, all oil tanks and boiler drums.
| Model | Upper valve | Lower valve | Connection | Max. pressure | Max. temp. | Valve | Front / back channel | Glass | Centre to centre |
|---|---|---|---|---|---|---|---|---|---|
| RLG-LP-11 | Self-closing | Self-closing | JIS 5K 20A, 25A | 3 kg/cm² | 150 °C | HBsC1 | SUS 201 | Borosilicate | 285 – 5,100 mm |
| RLG-LP-13 | Tank return | Self-closing | JIS 5K 20A, 25A | 3 kg/cm² | 150 °C | HBsC1 | SUS 201 | Borosilicate | 285 – 5,100 mm |
| RLG-LP-14 | Top vent | Self-closing | JIS 5K 20A, 25A | 3 kg/cm² | 150 °C | HBsC1 | SUS 201 | Borosilicate | 285 – 5,100 mm |
| RLG-HP-22 | Screw-down | Screw-down with check ball | JIS 16K 20A | 50 kg/cm² | 300 °C | C.S | C.S | Borosilicate | 320 – 2,870 mm |
| RLG-HP-C22 | Chain valve | Chain valve with check ball | JIS 16K 20A | 30 kg/cm² | 300 °C | C.S | C.S | Borosilicate | 320 – 2,870 mm |
| RLG-HP-CK22 | Cock valve | Cock valve | JIS 16K 20A | 20 kg/cm² | 300 °C | C.S | C.S | Borosilicate | 320 – 2,870 mm |
HBsC1 is high-tensile brass casting; C.S is carbon steel. Types 11, 13 and 14 differ in the shape of the upper body. Other conditions on request.
Model code. RLG – gauge type – valve type – option. LP is the flat type for low pressure and temperature; HP is the armoured reflex type for high pressure and temperature. Options: N tank welding flange with check valve, W wide measuring (RLG-LP-14 only), T manual operating device, SR or SL scale board to the right or left of the sight.
Tubular type glass level gauge
Model: RLG-TB series. A tubular glass column inside a K-type protector, built to the SOLAS 1981, 1983, 1996, 1997 and 1998 amendments. These gauges are for water tanks; they are not used on fuel oil tanks.
Two limits apply. A tubular gauge may be fitted to a fuel oil tank only where the tank capacity is under 1,000 litres, and to ships carrying the class notation “Coasting Service” or of less than 500 gross tons.
| JIS code | Model | Upper body | Upper valve | Lower valve | Connection size |
|---|---|---|---|---|---|
| JIS F 7211 | RLG-TB-24 | A-type | Vent | Shut-off | 5K 10A |
| JIS F 7211 | RLG-TB-23 | B-type | Tank return | Shut-off | 5K 10A |
| JIS F 7211 | RLG-TB-22 | C-type | Shut-off | Shut-off | 5K 10A |
| JIS F 7212 | RLG-TB-14 | A-type | Vent | Self-closing | 10K 10A (16K 10A) |
| JIS F 7212 | RLG-TB-13 | B-type | Tank return | Self-closing | 10K 10A (16K 10A) |
| JIS F 7212 | RLG-TB-12 | C-type | Shut-off | Self-closing | 10K 10A (16K 10A) |
Every model shares the same construction: SS41 protector of K-type, hard glass, BC6 valve, 325 to 3,765 mm centre to centre, 0 to 3 kg/cm² and 0 to 100 °C. Types A, B and C differ in the shape of the upper body. The scale board is an optional item.
Protector is K-type on every model. The scale board is an optional item. Other conditions on request.
Marine float type level gauge
Model: FLG series, to Japanese Industrial Standard JIS F 7217, for all kinds of shipboard tanks. A float on a wire runs over a sheave and drives a pointer against a scale. The FLG-FCG type is gas tight. Easy to read and to install, and exact in indication.
| Model | Mounting | Nominal dia. | Application |
|---|---|---|---|
| FLG-FA-100 | Inner balance weight | 100 | Medium tanks |
| FLG-FA-150 | Inner balance weight | 150 | Large tanks |
| FLG-FB-100L / FLG-FB-100R | Outer balance weight | 100 | Large and medium tanks |
| FLG-FCG-100 | Direct acting | 100 | Removable tanks |
| FLG-FCG-150 | Direct acting | 150 | Double bottom (lubricating oil, water) tanks |
| FLG-FCG-200 | Direct acting | 200 | Double bottom (lubricating oil, water) tanks |
| Model | Pressure | Temp. | Connection | Chamber | Max. measuring range at Sp.Gr 0.92 |
|---|---|---|---|---|---|
| FLG-FA-100 | Atmospheric | 80 °C | 5K 100A | 100A | – |
| FLG-FA-150 | Atmospheric | 80 °C | 5K 150A | 150A | – |
| FLG-FB-100 | Atmospheric | 80 °C | 5K 100A | 100A | – |
| FLG-FCG-100 | 3 kg/cm² | 80 °C | 5K 100A | 100A | 3,000 mm |
| FLG-FCG-150 | 3 kg/cm² | 80 °C | 5K 150A | 150A | 6,000 mm |
| FLG-FCG-200 | 3 kg/cm² | 80 °C | 5K 200A | 200A | 10,000 mm |
| Model | Chamber | Float | Sheave | Spindle | Flange | Wire rope | Sight glass |
|---|---|---|---|---|---|---|---|
| FLG-FA | SGP | SUS 304 | SS41 | – | SS41 | SUS 304 | – |
| FLG-FB | SGP | SUS 304 | SS41 | – | SS41 | SUS 304 | – |
| FLG-FCG | SGP | SUS 304 | – | SUS 304 | SS41 | – | Hard |
The scale board is an optional item. The JIS F 7216 angle valve for the FLG-FB is an optional item.
Magnetic float type level gauge
Models: FLG-MS side mounting and FLG-MT top mounting. A magnet-equipped float inside a pressure-tight column inverts coloured flags in an external indicator as the level rises, and inverts them back as it falls. The level is read at the junction between the coloured and the plain part of the column, from over thirty metres away.
Because the indicator is isolated from the liquid, the gauge is used where a sight glass is not acceptable — heavy fuel oil, diesel oil, lubricating oil, fresh water and process chemicals. The measured liquid stays inside the pressure-tight housing, and the indication needs no external power. Flags are polycarbonate for low temperature and ceramic for high temperature. The stainless steel housing is also available in CPVC, PVC and other materials.
Point switches and a continuous transmitter can be built onto the same column, which takes the gauge beyond a simple sight-glass replacement: up to six reed level switches for high, low or intermediate alarms, and a 4–20 mA transmitter for remote reading.
| Model | Mounting | Connection | Measuring range | Max. pressure | Max. temp. | Min. Sp.Gr | Rotor |
|---|---|---|---|---|---|---|---|
| FLG-MS | Side–side | JIS, DIN, ANSI 25A | Max. 5,000 mm | 5 kg/cm² | 200 °C | Over 0.8 | Aluminium |
| FLG-MS | Side–side | JIS, DIN, ANSI 25A | Max. 5,000 mm | 120 kg/cm² | 450 °C | Over 0.69 | Ceramic |
| FLG-MT | Top | JIS 5K 100A or 125A | Max. 2,500 mm | 5 kg/cm² | 200 °C | Over 0.8 | Aluminium |
Accuracy is ±10 mm, the chamber SUS 304 and the float titanium on all three. The rotor chamber is aluminium.
| Assembly option | Module | Output | Contact | Power | Accuracy | No. of points | Range | Max. temp. | Enclosure |
|---|---|---|---|---|---|---|---|---|---|
| Level switch | Reed switch | Dry contact | 125 V AC, 0.5 A — SPDT or SPST | – | ±3 mm | Max. 6 | – | 120 °C | Weatherproof |
| Level transmitter | R/I converter | 4–20 mA two-wire | – | 24 V DC | 10 mm | – | 400 – 5,000 mm | 120 °C | Weatherproof |
| Level transmitter | Smart HART converter | 4–20 mA two-wire, HART | – | 24 V DC | 10 mm | – | 400 – 5,000 mm | 120 °C | Weatherproof |
Switch and transmitter modules can be made intrinsically safe using an I.S. barrier. The scale board is an optional item.
Model code. FLG – mounting (MS side, MT top) – number of level switches (1LS to 4LS) – enclosure (W weatherproof IP56, E explosion proof Exd IIC T6) – transmitter output (T 4–20 mA two-wire, TH 4–20 mA smart type HART, TR 1 kΩ).
Self-powered content gauge
Model: HB-SPCG series. The weight of the liquid column in the tank is converted into gas pressure inside a transmitter chamber at the bottom of the tank. That pressure is carried up a capillary tube to an indicating gauge, so the reading is directly proportional to the head of liquid. There are no floats, nothing to power, and the indication is local.
One limitation is worth knowing before specifying it: over- or under-pressure in the tank cannot be compensated, so the gauge is for tanks that vent to atmosphere.
Used on diesel oil, lubricating oil, heavy fuel oil, solvents, gas oil, fresh water and all non-corrosive liquids.
| Measuring range | Tank depths from 1 to 12 m |
|---|---|
| Overload | 120% above maximum range |
| Operating temperature | Indication gauge −40 to +70 °C; transmitter chamber −40 to +120 °C |
| Indication gauge | Ø150 mm, wall mounting, SUS 304 body |
| Graduation | Height, volume or dual scale |
| Capillary tube | SUS 304, 3 m standard and 16 m maximum; other lengths on request |
| Model | Application | Connection | Accuracy | Capillary length | Indication gauge | Capillary | Flexible tube | Diaphragm |
|---|---|---|---|---|---|---|---|---|
| HB-SPCG-B150 | General liquid (oil, water) | PF 3/4″ | ±1.0% of full range | 3 m std., 16 m max. | SUS 304 | Copper | SUS 304 with PVC coating | PBP / SUS 316L |
| HB-SPCG-V150 | General liquid (oil, water) | JIS 5K / 10K / 16K 25A, 40A | ±1.0% of full range | 3 m std., 16 m max. | SUS 304 | Copper | SUS 304 with PVC coating | PBP / SUS 316L |
| HB-SPCG-F150 | General liquid (oil, water) | JIS 5K 100A / 125A / 150A | ±1.0% of full range | 3 m std., 16 m max. | SUS 304 | Copper | SUS 304 with PVC coating | PBP / SUS 316L |
Transmitter mounting: B150 non-return boss, V150 I.S. valve type, F150 submersible type. Other conditions on request.
Dial type float level gauge
Model: FL series. A float on a wire rises and falls with the level inside the tank. The wire turns a drum coupled to the main pulley on the main shaft, and the pulley drives a pointer wire that carries the level pointer across the dial. Different main pulley sizes suit different installation heights. The construction is simple and maintenance is easy.
Used on heavy fuel oil, diesel oil and lubricating oil tanks, water tanks and sewage collecting tanks. High and low alarm switches and a transmitter can be fitted as options.
| Model | Mounting | Measuring range | Indication | Specific gravity | Accuracy (full range) | Head | Float wire | Float |
|---|---|---|---|---|---|---|---|---|
| FL1x | Top | 0 – 6 m | One point | 0.7 – 1.5 | ±1.5% | ADC | SUS 316 | SUS 304 |
| FL2x | Side | 0 – 6 m | One point | 0.7 – 1.5 | ±1.5% | ADC | SUS 316 | SUS 304 |
| FL3x | Side with seal pot | 0 – 6 m | One point | 0.7 – 1.5 | ±1.5% | ADC | SUS 316 | SUS 304 |
Model code. FL – mounting type (1 top, 2 side, 3 side with seal port) – option (0 none, 1 alarm switches high and low, 2 transmitter, 3 alarm switches and transmitter).
Choosing a gauge
| If you need | Use |
|---|---|
| Direct sight of the liquid on oil or water tanks and boiler drums | Flat type glass, RLG |
| A low-cost column for water tanks only | Tubular type glass, RLG-TB |
| A JIS-standard float gauge for any shipboard tank | Marine float, FLG |
| A reading on colourless or hazardous media, with no glass wetted by the liquid | Magnetic float, FLG-MS / FLG-MT |
| A local reading with no power supply and no float in the tank | Self-powered content gauge, HB-SPCG |
| A dial at the tank top, with optional alarm contacts | Dial type float, FL |
Where the reading has to reach the bridge or a cargo console rather than stay at the tank, see level transmitters and tank monitoring systems. For point alarms only, see level switches.