Kobold DON oval gear flow meter, ⅛ to 4 in, 0.5 L/h to 2,500 L/min, aluminium or stainless steel
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Quick overview
- Type: Flow
- Signal / Protocol: 4–20 mA, Pulse / frequency
- Hazardous area: Hazardous-area rated / option
- Genuine productsSourced from the manufacturer or authorised channels
- Delivery across BangladeshDhaka, Chattogram and all industrial zones
- After-sales supportInstallation guidance and warranty handling
- Reply within 24 hoursCall +880 1713 552466 or email hello@argonmark.com
Specifications
| General | |
|---|---|
| Part no. | BD-1502 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | Kobold |
| Model | DON |
| Technical | |
| Type | Flow |
| Signal / Protocol | 4–20 mA, Pulse / frequency |
| Hazardous area | Hazardous-area rated / option |
Datasheet
Technical features
| Measures clean, non-abrasive liquids regardless of conductivity: oils, fuels, chemicals, solvents, grease, ink, pastes | |
| No flow conditioning needed; compact installation | |
| Bi-directional flow detection with quadrature Hall output | |
| Electronics options | dual totalizer, rate/totalizer, batch controller with relays, loop-powered 4–20 mA, mechanical 4-digit register |
|---|---|
| ATEX | Ex h, Ex ia, Ex db (also IECEx Ex db) versions |
Applications
| Lubricating and hydraulic oils, diesel and fuel oils | |
| Chemicals, solvents, ink, grease and pastes | |
| Batching and dosing |
Key specifications
| Flow range | 0.13–9.5 GPH (0.5–36 L/h) to 40–660 GPM (151–2,500 L/min) |
|---|---|
| Accuracy | ±0.2% to ±1% of reading (size and rotor dependent); repeatability ±0.03% |
| Viscosity | Up to 1,000 cP standard; higher with special-cut rotors |
| Max. pressure / temperature | 100 bar (1,450 psi) / 150 °C (300 °F) |
| Body | Aluminium or 316L stainless steel |
| Output | Reed, Hall, quadrature or high-resolution pulse; 4–20 mA; LCD rate/totalizer; batch; mechanical totalizer |
Specification
| Accuracy | DON-x04: ±1% (0.95–9.5 GPH); DON-x05–x15: ±1%; DON-x20–x60: SS rotors ±0.5%, PPS rotors ±1% (±0.2% / ±0.5% with linearizing electronics) |
|---|---|
| Repeatability | ±0.03% typical |
| Analog output | 4–20 mA loop powered, 16–32 V DC; additional error ±0.15% FS |
| Reed switch | SPST NO, max. 30 V DC / 20 mA |
| Hall output | Push-pull, 8–30 V DC, 100 mA (NPN option 5–30 V DC) |
| Media temperature | −20 to +80 °C standard; to 120 °C with cooling fins; to 150 °C (option T0) |
| Ambient temperature | −20 to +80 °C |
| Protection | IP66/67 (IP65 with mechanical register) |
| Body materials | Die-cast aluminium; or 316L stainless steel |
| Rotors | PPS GF30, PTFE, PEEK or stainless steel; carbon graphite bearings |
| Seals | FKM, NBR, FEP-encapsulated, Fluoroprene (EC 1935/2004) |
| Cable entry | M20 × 1.5 or ½ in NPT |
| Filtration | < 75 µm (x04–x15); < 150 µm (x20–x35); < 350 µm (x40–x60) |
| Max. pressure drop | 1 bar |
Approvals
| ATEX | II 2G Ex h IIC T4/T3 Gb (mechanical); II 2G Ex ia IIC T4 Gb (IS electronics); II 2G Ex db IIC T4/T6 Gb and II M2 Ex db I Mb (flameproof); II 3G Ex ic IIC |
|---|---|
| IECEx | Ex db IIC T4 Gb; Ex db I Mb |
Sizes and pulse resolution
| Model | Flow range | Reed (pulses/gal) | Hall (pulses/gal) | Max. pressure, threaded (psi) |
|---|---|---|---|---|
| DON-x04 / x05 | 0.13–9.5 GPH (0.5–36 L/h) | 10,107 | 10,107 (high-res 42,851) | 1,450 |
| DON-x10 | 0.5–27 GPH (1.9–102 L/h) | 4,020 | 4,020 (high-res 16,080) | 1,450 |
| DON-x15 | 4–145 GPH (15–550 L/h) | 1,329 | 2,657 | 1,450 |
| DON-x20 | 0.26–10.6 GPM (1–40 L/min) | 310 | 617 | 925 (SS) |
| DON-x25 | 2.6–40 GPM (10–151 L/min) | 98 | 394 | 870–1,000 |
| DON-x30 | 4–66 GPM (15–250 L/min) | 51 | 208 | 580–725 |
| DON-x35 | 8–120 GPM (30–454 L/min) | 24.2 | 96.5 | 435 |
| DON-x40 | 13–150 GPM (49–568 L/min) | 18.5 | 74.2 | 435 |
| DON-x45 | 10–200 GPM (38–757 L/min) | 9.7 | 39.0 | 230 |
| DON-x50 | 13–260 GPM (49–984 L/min) | 5.7 | 22.3 | 230 |
| DON-x55 | 20–400 GPM (76–1,514 L/min) | 3.97 | 15.9 | 230 |
| DON-x60 | 40–660 GPM (151–2,498 L/min) | 2.12 | 8.71 | 230 |
Flow derating for viscosity (max. flow multiplier)
| Viscosity (cP) | Standard rotor | Special-cut rotor |
|---|---|---|
| ≤ 1,000 | 1 | 1 |
| ≤ 2,000 | 0.5 | 1 |
| ≤ 4,000 | 0.42 | 0.84 |
| ≤ 8,000 | 0.25 | 0.5 |
| ≤ 30,000 | 0.15 | 0.3 |
| ≤ 150,000 | 0.1 | 0.2 |
| ≤ 1,000,000 | 0.025 | 0.05 |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of Kobold, used with permission (source) — background removed by Argonmark. All photo credits
Description
The Kobold DON is an oval gear positive displacement flow meter for clean liquids such as oils, fuels, chemicals, solvents, ink and grease, with sizes from ⅛ to 4 in covering about 0.5 L/h up to 2,500 L/min. Accuracy is ±0.2% to ±1% of reading depending on size and rotor, repeatability ±0.03%, and it handles viscosities up to 1,000 cP as standard (far higher with special-cut rotors and derated flow).
Aluminium and 316L stainless steel versions are rated up to 100 bar and 150 °C. Outputs range from reed and Hall pulses (quadrature for bi-directional flow) to 4–20 mA, LCD rate/totalizers, batch controllers and a mechanical register, with ATEX and IECEx explosion-protected versions.
Argonmark Ltd supplies Kobold instruments across Bangladesh — Dhaka, Chattogram, Gazipur, Narayanganj and the gas fields, refineries, terminals and power plants beyond. Send us the model, range, process connection, output and any hazardous-area requirement, and we will confirm the right configuration, lead time and price.
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