Keller Acculevel high-accuracy submersible level transmitter, 4–20 mA or 0–5/10 V + RS485, NSF 61
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Quick overview
- Type: Level
- Signal / Protocol: 4–20 mA, Modbus, RS-485, Voltage
- Hazardous area: General purpose
- 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-1481 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | Keller |
| Model | Acculevel (and Acculevel SDI) |
| Technical | |
| Type | Level |
| Signal / Protocol | 4–20 mA, Modbus, RS-485, Voltage |
| Hazardous area | General purpose |
Datasheet
Technical features
| Microprocessor compensation gives high accuracy over temperature (total error band stated over −10 to 80 °C) | |
| Lightning protection included on 4–20 mA models | |
| Dual analog + RS485 outputs; up to 128 transmitters on one bus; user-rangeable analog output | |
| NSF/ANSI 61 and 372 for drinking water (316L or titanium with PE/EPDM cable) | |
| Cable and seal options for water, hydrocarbons (Hytrel/Viton) and chemicals (Tefzel) | |
| Custom calibration for liquids other than water; optional removable cable |
Applications
| Wells, boreholes and groundwater monitoring | |
| Drinking water reservoirs and tanks | |
| Lift stations, tanks and surface water level; telemetry and data logging |
Construction
| Protection | IP68 |
|---|---|
| Wetted materials | 316L stainless steel (titanium optional), polyamide |
| Cable and sealing | PE & EPDM (water, wastewater); Hytrel & Viton (hydrocarbons); Tefzel & Viton or EPDM (chemicals) |
| Certification | CE (EN 61000-6-1 to 6-4, EN 61326-1, -2-3); NSF/ANSI 61, 372 |
| Accessories | Conduit fitting, drying tube, bellows, cable hanger, termination enclosure, stabilizing weight, piezometer cap, surge protector, RS485 converter, process meter |
Key specifications
| Range | 0–0.9 m to 0–274 m water (0–3 to 0–900 ft WC); absolute 0–2 to 0–11 bar |
|---|---|
| Accuracy | ±0.1% FS static (±0.05% opt.); ±0.25% FS total error band (±0.1% opt.) |
| Output | 4–20 mA or 0–5 / 0–10 V, plus RS485 Modbus RTU; SDI-12 version |
| Supply | 8–32 V DC (11–32 V with lightning protection) |
| Wetted materials | 316L SS (titanium optional), polyamide |
| Protection | IP68; NSF/ANSI 61 and 372 |
Acculevel (analog + RS485)
| Ranges | Gauge: any range from 0–3 to 0–900 ft WC (≈ 0–0.9 to 0–274 m); absolute 0–2 to 0–11 bar |
|---|---|
| Static accuracy | ±0.1% FS (±0.05% FS optional) at 25 °C |
| Total error band | ±0.25% FS (±0.1% FS optional) over the compensated range |
| Temperature reading | Typ. ±0.3 °C |
| Digital resolution | 0.002% |
| Outputs and supply | 4–20 mA + RS485: 11–32 V DC with lightning protection, 8–32 V DC without; 0–5 V + RS485: 8–32 V DC; 0–10 V + RS485: 13–32 V DC |
| Start-up time | 250 ms |
| Communication | KELLER bus, Modbus RTU |
| Operating temperature | −10 to +60 °C |
| Compensated temperature | −10 to +80 °C |
Acculevel SDI (SDI-12 for loggers)
| Output | SDI-12 V1.3 or RS485 Modbus RTU (one at a time), 1,200 baud |
|---|---|
| Resolution | Pressure 0.0005% FS; temperature < 0.01 °C |
| Total error band | ±0.05% FS (0–50 °C); ±0.1% FS (−10 to 80 °C); USGS option ±0.01 ft WC up to 10 ft, ±0.1% of reading above (max. 70 ft WC, 0–40 °C) |
| Supply | 6–32 V DC; < 0.1 mA sleep, < 5.5 mA active |
| Start-up time | < 5 ms |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of Keller, used with permission (source) — background removed by Argonmark. All photo credits
Description
The Keller Acculevel is a high-accuracy submersible level transmitter with microprocessor temperature compensation: ±0.1% FS static accuracy and a ±0.25% FS total error band over −10 to 80 °C, with ±0.05% / ±0.1% options. Ranges can be set anywhere from 0–3 ft (about 0.9 m) to 0–900 ft (about 274 m) of water, and it gives a 4–20 mA or 0–5/10 V signal together with RS485 Modbus RTU. The Acculevel SDI version adds SDI-12 for low-power data loggers.
It is built in 316L stainless steel (titanium optional) to IP68, includes lightning protection on 4–20 mA models, and is certified to NSF/ANSI 61 and 372 for drinking water. Cable and seal materials suit water, hydrocarbons or chemicals.
Argonmark Ltd supplies Keller 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.
Questions & answers
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