S.A Electronic Private Limited

SITRANS P DS III, HART, 4-20 MA TRANSMITTER FOR DIFFERENTIAL PRESSURE AND FLOW PN 32/160 GAS 1/LIQUIDS 1 ART. 3.3 SEP MEASURING CELL FILLING SILICONE NORMAL CLEuropean Article NumberING SPAN: PN 160 (MWP 2320 PSI): 2,5 TO 250 MBAR (1.004 TO 100.4 INH2O), MAX. STATIC PRESSURE 160 BAR DIAPHRAGM STAINLESS STEEL PARTS OF MEASURING CELL STAINLESS STEEL PROCESS CONNECTION: 1/4-18 NPT MOUNTING THREAD: M10 DIE-CAST ALUMINIUM HOUSING, PROCESS FLANGE BOLTS STAINLESS STEEL STANDARD DESIGN . WITHOUT EXPLOSION PROTECTION, ELECTRIC CONNECTION AND CABLE INLET: CABLE GLAND M20 X1.5 WITHOUT VISIBLE DIGITAL INDICATOR (DIGITAL DISPLAY HIDDEN, SETTING: MA)

WIKA temperature sensors, the common sensor elements used in industry are Thermocouple types (J, K, S) and RTD type (Pt100). Below is a simple explanation of each sensor type used in process plants.

WIKA Temperature Sensor Types Explained 1️⃣ Type J Thermocouple

Material: Iron – Constantan (Fe-CuNi)

Temperature range:

• approx −210 °C to +1200 °C

Features

• Good for medium-high temperatures

• Good accuracy in reducing atmosphere

• Not good in oxidizing environments (iron rusts)

Typical Applications

• Heat treatment furnaces

• Plastic industry

• Chemical plants

2️⃣ Type K Thermocouple

Material: Nickel-Chromium / Nickel-Aluminium

Temperature range:

• approx −270 °C to +1300 °C

Features

• Most widely used thermocouple

• Good high-temperature stability

• Fast response time

• Suitable for harsh environments

Typical Applications

• Boilers

• Turbines

• Refineries

• Furnaces

3️⃣ Pt100 RTD (Resistance Temperature Detector)

Material: Platinum element

Temperature range:

• approx −200 °C to +600 °C

Working principle

• At 0 °C the resistance = 100 Ω

• Resistance increases with temperature, allowing accurate measurement

Features

• Very high accuracy

• Stable for long-term measurement

• Used in low-to-medium temperature processes

Typical Applications

• Pharmaceutical plants

• Food & dairy industry

• HVAC systems

• Chemical reactors

4️⃣ Type S Thermocouple

Material: Platinum-Rhodium / Platinum

Temperature range:

• approx −50 °C to +1760 °C

Features

• Very high temperature capability

• Extremely stable

• Expensive (platinum based)

Typical Applications

• Glass industry

• Steel furnaces

• High-temperature kilns

Quick Comparison

✅ Simple rule used in industry

• Pt100 → Accurate, low temperature

• J / K → Normal industrial high temperature

• S → Very high temperature furnaces

SA MAKE PT-100 TYPE RTD SENSOR WITH WEATHER PROOF HEAD

SIMPLEX, CLASS A, 3 WIRE

SIZE: 6 X 200 MM ,CONNE.: 1/2" BSP M ADJ,

TEMP RANGE: -50 TO 400 DEG C

WIKA pressure transmitters are highly reliable, industrial-grade sensors designed to measure gauge, absolute, and differential pressure across diverse applications. Popular models like the A-10, S-10, and O-10 offer robust, stainless steel, often fully welded construction with various output signals (4-20 mA, 0-10 V) and high overload resistance, ensuring long-term, low-maintenance operation. They are essential in hydraulics, pneumatics, and sanitary applications. [1, 2, 3, 4, 5]
Key product offerings and features include:

• Common Models:
  • A-10: A cost-efficient, versatile model for general industrial use, offering over 2 million configuration variants.
  • S-10/S-11: Designed for high-precision industrial, pneumatic, and hydraulic applications.
  • LH-10: Submersible transmitter (IP68) for level measurement in harsh environments.
  • O-10: OEM-specific transmitter with a dry measuring cell for high-volume applications.
  • S-10-3A: Sanitary transmitter suitable for food and pharmaceutical industries, compliant with 3A standards.
• Performance: Features include high accuracy (e.g., 0.25% in the LH-10), broad pressure ranges (e.g., -1 to 25 Bar, 0 to 600 Bar), and exceptional long-term stability with > 100 million load cycles.
• Construction: Typically constructed with high-quality stainless steel and often feature flush diaphragms for viscous or particulate-heavy media.
• Output Signals: Available in industry-standard formats including 4…20 mA, 0…10 V, and others suitable for automation and control systems.
• Applications: Used for pressure monitoring in hydraulics, pneumatics, pumps, compressors, and liquid level measurement. [1, 2, 3, 4, 5, 6, 7]

WIKA also offers specialized transmitters with wireless technology for IIoT (Industrial Internet of Things) solutions, enabling remote, cloud-based monitoring. [8]

The S55501 is a bimetal temperature gauge from WIKA, designed for industrial temperature measurement.

It is typically part of the Model 55 series (heavy-duty industrial thermometers).

⭐ Key Specifications (S5551 / S55501)

• Type: Bimetal dial thermometer
• Dial size: ~160 mm (common variant)
• Temperature range:
  • Common: 0 to 160°C
  • Variants: -20 to +120°C or wider ranges available
• Accuracy: Class 1 (high industrial accuracy)
• Material: Stainless steel (case + stem)
• Process connection: 1/2" NPT (standard)
• Stem length: Multiple options (150 mm to 500+ mm)
• Stem diameter: ~6–8 mm
• Window: Safety glass
• Mounting: Adjustable stem & dial

⚙️ How it works

This model uses a bimetal coil:

• Two different metals expand at different rates when heated
• This causes the coil to rotate
• The rotation moves the pointer on the dial

This is a mechanical, no-power-required temperature measurement system

🏭 Typical Applications

• Pipelines (steam, water, oil)
• Boilers & HVAC systems
• Chemical & process industries
• Compressors & hydraulic systems