- Direct reading on a calibrated tube
- Water: Up to 16 m³/h ; Air: Up to 160 m³/h
- Body: Stainless steel
- Adjustable limit value switches
- Analogue output: 4-20 mA or 0-10 V
- ATEX version
- Suitable for: Water treatment, industrial process (paper mill, textiles etc.), chemical and pharmaceutical industries
| Nominal pressure: | PN 10 at 20 °C |
| Pressure limits: | Refer to the table ”Measuring ranges” in datasheet |
| Operating temperature: | Max. 80 °C acc. version (Option : 100 °C) |
| Scale factor: | 1:10 |
| Accuracy class: | According to VDE/VDI 3513 page 2 (08/2008) |
| Error limit (G): | 1.6 % |
| Linear limit (qG): | 50% |
| Fittings / RA87: | G: BSP-F ISO 288 Rp: Unions, inner cylindrical insert, thread according to DIN EN 10226-1 (ISO 7-1) |
| Fittings / FA87: | Flanges PN 10 according to DIN EN 1092-1, Others (ANSI, JIS, etc.) on request |
MATERIALS
| Protection sleeve: | AISI 304 (1.4301) |
| Fittings and inserts RA87: | Threads: AISI 316 Ti (1.4571) (Option: PVDF lining) ²⁾ Unions: AISI 316 Ti (1.4571) (Option: PVDF lining) ²⁾ |
| Flanges / FA87: | AISI 316 Ti (1.4571) (Option: PVDF lining) ²⁾ |
| Reading tube: | Borosilicate glass |
| Protective screen: | Perspex |
| Gaskets: | FPM (Options : EPDM, FFKM, Silicone, Perlast®) |
| Floats for liquids ¹⁾: | AISI 316 Ti (1.4571); Option: Hastelloy C4 |
| Floats for gases ¹⁾: | PTFE; Options: PVC, PVDF, PP, anodized aluminum |
| Floats for use of limit value switches ¹⁾: | On liquids: AISI 316 Ti with magnetic core On gases: PVC with magnetic core Options: PP, PVDF, PTFE (with magnetic core) |
Note:
1) Floats of small sizes are non-guided. As an option, sizes 9.5 and 19 (without switches) are available (detailed description on request)
2) PVDF lining: All wet parts (excepted the glass tube) are of PVDF.
(Special versions: With protective lining of wet parts)
BAMO RA87/FA87’s measuring principle is that of the variable area flowmeter, the float is moved by the fluid inside a calibrated conical glass tube. The borosilicate glass conical tube is inside a stainless steel protection case with a transparent reading window. These flowmeters can be calibrated for each fluid, depending on the operating conditions.
Versions:
- RA87-G: Fittings: BSP-F ¼” … 2”
- RA87-Rp: Fittings: Unions
- FA87: Fittings: Flanges ND 10 … 65
- RA/FA87-MSK1: With bistable contact N.C.
- RA/FA87-MSK2: With bistable contact N.O.
- RA/FA87-MSKW: With bistable changeover contact
- RA/FA87-EM: With analogue output 4-20 mA or 0-10 V
- RA/FA87-Ex: ATEX, explosion-proof version
Limit switches: These flowmeters can be equipped with a magnetic float and Reed contacts, triggerpoints adjustable over the entire measuring range.
Analogue output: 4-20 mA or 0-10 V The transmitter is connected to a Hall effect linear signal ruler. The analogue signal (4-20 mA or 0-10 V) is the image of the float position; The transmitter is connected via a connecteur M12. This output is useful for applications using a PLC. The device is compact with a high level of repeatability.