K-TEK M4A-AT-TK Magnetostrictive Level Transmitter | Replacement, Equivalent & Selection Guide
The K-TEK M4A-AT-TK is a guided-wave magnetostrictive continuous level transmitter engineered for demanding liquid-level measurement in process industries. Delivering high-accuracy, non-contact-free measurement via a magnetostrictive sensing element, this transmitter is widely specified in oil & gas, chemical processing, water treatment, and power generation applications where reliability and precision are non-negotiable.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | K-TEK (Ametek) |
| Model / SKU | M4A-AT-TK |
| Series | M4 Magnetostrictive Level Transmitter |
| Measurement Technology | Magnetostrictive (guided wave) |
| Output Signal | 4–20 mA HART |
| Measurement Range | Up to 5,000 mm (application-dependent) |
| Accuracy | ±1 mm |
| Process Connection | Flanged / threaded (per configuration) |
| Housing / Enclosure | Aluminum, IP66/IP67 |
| Power Supply | 12–36 V DC (loop-powered) |
| Operating Temperature | –40°C to +85°C (electronics); process-dependent |
| Approvals | ATEX, IECEx, FM (hazardous area rated) |
| Weight (approx.) | 3.6 kg |
Compatible Replacement & Equivalent Models
When the M4A-AT-TK is unavailable or under evaluation, the following models are commonly considered as functional equivalents or drop-in replacements. Always verify process conditions, flange rating, and output protocol before substitution.
| Brand | Model | Technology | Output | Notes |
|---|---|---|---|---|
| K-TEK (Ametek) | M4A-AT-TK (OEM) | Magnetostrictive | 4–20 mA HART | Direct OEM equivalent |
| MTS Sensors | Temposonics® LT Series | Magnetostrictive | 4–20 mA / HART | High-accuracy alternative; verify float compatibility |
| Orion Instruments | Atlas™ Series | Magnetostrictive | 4–20 mA HART | Common in refinery bypass chambers |
| Emerson / Rosemount | 5300 Series (GWR) | Guided Wave Radar | 4–20 mA HART / FF | Different technology; suitable for foam/vapor applications |
| VEGA | VEGAFLEX 81 | Guided Wave Radar | 4–20 mA HART | Alternative for high-pressure/temperature |
Note: Konmask.com supplies genuine K-TEK M4A-AT-TK units. Contact us before substituting to confirm compatibility with your process.
Why Choose the Original Model
- Proven magnetostrictive accuracy: ±1 mm resolution outperforms most radar alternatives in clean liquid applications.
- HART-native communication: Seamless integration with existing DCS/SCADA infrastructure without protocol converters.
- Hazardous area certification: ATEX/IECEx/FM ratings make it suitable for Zone 1/2 and Division 1/2 environments.
- Long service life: No moving parts in the sensing element; minimal maintenance over 10+ year operational cycles.
- K-TEK ecosystem: Direct compatibility with K-TEK bypass chambers, floats, and mounting hardware — no adaptation required.
Typical Applications
- Oil & Gas: Separator vessels, storage tanks, wellhead liquid measurement, produced water tanks.
- Chemical Processing: Reactor level monitoring, solvent storage, acid/caustic tanks (with appropriate wetted materials).
- Power Generation: Boiler feedwater tanks, condensate vessels, fuel oil day tanks.
- Water & Wastewater: Lift station wet wells, chemical dosing tanks, clarifier level control.
- Pharmaceutical: CIP/SIP-compatible installations, ingredient storage vessels.
System Compatibility
- DCS Platforms: Honeywell Experion, Emerson DeltaV, ABB 800xA, Yokogawa CENTUM VP — all via 4–20 mA HART.
- PLC Systems: Rockwell ControlLogix/CompactLogix, Siemens S7-300/400/1500 with HART I/O cards.
- HART Multiplexers: Compatible with Pepperl+Fuchs, Emerson 475/375 field communicators.
- Bypass Chambers: Designed for use with K-TEK Series A, B, and C bypass level gauge chambers.
- Float Compatibility: Requires K-TEK-specified magnetic float matched to fluid density (SG 0.45–1.0 standard range).
Selection Guide
Use the following criteria to confirm the M4A-AT-TK is the correct model for your application:
| Selection Criterion | M4A-AT-TK Suitability | Consider Alternative If |
|---|---|---|
| Fluid type | Clean liquids, hydrocarbons, water | Slurries, high-viscosity fluids → GWR |
| Measurement range | Up to ~5,000 mm | >5 m range → consider radar |
| Required accuracy | ±1 mm — ideal for custody transfer | ±5 mm acceptable → ultrasonic may suffice |
| Hazardous area | Zone 1/2, Div 1/2 certified | Safe area only → standard transmitter |
| Output protocol | 4–20 mA HART | Fieldbus/Profibus required → specify separately |
| Installation | Bypass chamber or direct insertion | Open-tank top-mount → ultrasonic/radar |
Quality Assurance & Sourcing
- Genuine OEM parts: All K-TEK M4A-AT-TK units supplied by Konmask.com are sourced from authorized distribution channels or verified surplus with full traceability.
- Pre-shipment inspection: Each unit undergoes visual inspection, documentation verification, and packaging integrity check before dispatch.
- Calibration certificates: Factory calibration documentation available upon request.
- Warranty: 12-month warranty against manufacturing defects on all new units.
- Anti-counterfeit: Serial number and date code verification provided for every shipment.
How to Order
- Confirm your model number: K-TEK M4A-AT-TK
- Specify probe length (mm) and process connection type/rating.
- Confirm float material and specific gravity range of your process fluid.
- Submit your RFQ to [email protected] or use the Add to Cart button above.
- Receive quotation with lead time, datasheet, and shipping options within 24 hours.
For urgent requirements or technical pre-sales support, call +0086 19859288691.
Replacement & Compatibility FAQ
Q: Can the MTS Temposonics LT replace the K-TEK M4A-AT-TK directly?
A: Functionally similar, but float and chamber dimensions must be verified. The MTS unit uses a different float specification — consult Konmask before substituting.
Q: Is the M4A-AT-TK compatible with Emerson DeltaV via HART?
A: Yes. The 4–20 mA HART output integrates natively with DeltaV HART I/O cards (CHARM or traditional). No additional configuration required beyond standard HART addressing.
Q: What is the lead time for a new M4A-AT-TK unit?
A: Stock units ship within 3–5 business days. Factory-order units typically require 6–10 weeks. Contact us for current availability.
Q: Can this transmitter be used in a direct-insertion (non-bypass) configuration?
A: Yes, with appropriate process connection and float guide tube. Confirm vessel nozzle size and pressure rating with Konmask engineering support.
Q: Do you supply calibration certificates with the M4A-AT-TK?
A: Yes. Factory calibration certificates are included with new units. Third-party calibration can be arranged upon request.
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Contact: [email protected] | +0086 19859288691
