Description
Miniature Head RTD Sensor (Model APMS) is a compact industrial temperature sensor designed for applications requiring accurate temperature measurement, flexible installation, and a reduced terminal head footprint. Available with either a PT100 or PT1000 sensing element, this sensor features a Class A RTD, a durable 6 mm SS316 stainless steel probe, a miniature aluminium terminal head, and an adjustable 1/2-inch BSP process connection that allows installers to set the immersion depth during installation. Operating across a temperature range of -50°C to +400°C, the APMS combines the space-saving benefits of a miniature head with the versatility needed for process plants, machinery, and industrial equipment.
Unlike compact miniature-head RTDs with fixed insertion lengths, the APMS is engineered for applications where the final immersion depth is determined on-site. The adjustable process connection simplifies installation across different pipe sizes, vessels, and equipment configurations while reducing the need for custom probe lengths. With the flexibility to choose PT100 or PT1000 sensing technology and support for 2-wire, 3-wire, or 4-wire configurations, this sensor integrates easily with compatible temperature transmitters, PLCs, DCS, SCADA systems, controllers, and industrial automation platforms. Manufactured by Aavad Instrument, this miniature head RTD sensor is suitable for industrial process control, OEM equipment, utilities, chemical plants, power generation, and manufacturing facilities requiring compact yet adaptable temperature measurement solutions.
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Additional information
| Weight |
0.3 kg |
| Dimensions |
40 × 15 × 15 cm |
| Configuration |
2 WIRE, 3 WIRE, 4 WIRE
|
Key Features
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Selectable Pt100 or Pt1000 Sensing Core Allows full facility standardization across both standard 3-wire control loops and lead-wire-immune 2-wire circuits within a single sensor family.
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Sliding Adjustable 1/2″ BSP Fitting Built-in compression connector enables installation crews to fine-tune and lock the probe insertion depth during field setup.
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Compact Miniature Aluminum Head Scaled-down enclosure footprint provides essential space savings in tight, overcrowded machinery spaces and low-clearance areas.
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High-Precision Class A Compliance Guarantees exceptionally tight, highly repeatable thermal tracking loops adhering to international calibration limits ($pm0.15^circtext{C}$ at $0^circtext{C}$).
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Rugged 6mm x 300mm Proportional Build Heavy-walled 6 mm OD stainless steel probe offers robust physical rigidity over a versatile 300 mm length.
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Screw-On Cap with Safety Chain Enclosure lid is mechanically linked to the main body via a retaining chain to prevent loss during routine field testing.
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Flexible 2, 3, or 4-Wire Configurations Configurable in 2-wire, 3-wire, or 4-wire layouts to match varying requirements for distance-based lead wire resistance compensation.
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Durable Marine-Grade SS316 Sheath Heavy-duty stainless steel skin provides excellent protection against surface rust, oxidation, and localized chemical wear.
Applications
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Compact Modular Machinery Skids Flexible inline temperature profiling inside compact dosing units, hydraulic power packs, and lubrication loops.
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Varying Pipeline Diameter Monitoring Reliable center-stream tracking across shifting pipe headers where mounting depths cannot be finalized prior to installation.
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OEM Equipment and Processing Enclosures Space-saving thermal instrumentation for industrial drying cabinets, packaging machinery, and pump casings.
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Plant-Wide Instrument Standardization Ideal for facility retrofits seeking a uniform physical hardware look across distinct Pt100 and Pt1000 automated networks.
Datasheet
FAQs
1. What is Aavad’s Miniature Head RTD Sensor and how long is the standard probe?
Aavad’s Miniature Head RTD Sensor (Model APMS) is a Class A, simplex PT100 Resistance Temperature Detector (RTD) featuring a compact aluminum protection head with a screw-on cap and retaining chain. The standard configuration includes a 300 mm long, 6 mm outer diameter (OD) SS316 probe, making it suitable for deeper immersion applications while maintaining a compact installation footprint.
2. Can this Sensor be built with a PT1000 element instead of PT100?
Yes. Aavad Instrument manufactures this Miniature Head RTD Sensor with either a PT100 or PT1000 platinum RTD sensing element, allowing compatibility with different industrial temperature controllers, transmitters, PLCs, DCS systems, and instrumentation standards.
3. What is the construction and mounting of this Miniature Head Sensor?
The sensor features an SS316 stainless steel sheath, a 6 mm outer diameter (OD) probe, an adjustable 1/2″ NPT/BSP process connection, a single cable entry, and a nickel-plated ceramic terminal block, providing reliable installation and dependable industrial performance.
4. What wiring configurations does the Miniature Head RTD Sensor support?
This Miniature Head RTD Sensor is available in 2-wire, 3-wire, and 4-wire configurations, allowing seamless integration with temperature controllers, transmitters, PLCs, DCS systems, SCADA platforms, and data acquisition systems across a wide range of industrial applications.
5. Where is the Miniature Head RTD Sensor typically installed?
Miniature Head RTD Sensors are widely used in industrial process temperature measurement, machinery and equipment monitoring, pipelines, storage tanks, OEM equipment, HVAC systems, industrial automation, and compact installation locations where a full-size terminal head is not practical.
