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Temperature Gauges
WIKA R5502 Bimetal Thermometer, 0...150 °C, 4" Dial Size, 1/2" Male NPT Bottom Connection, 100 mm Stem Length, 84095918
WIKA

WIKA R5502 Bimetal Thermometer, 0...150 °C, 4" Dial Size, 1/2" Male NPT Bottom Connection, 100 mm Stem Length, 84095918

Mfr. part no.
84095918
SKU
PW-TG4-BT-100M-150C

Specifications

Model R5502
Measuring Range 0...150 °C
Dial Size 4" (100 mm)
Secondary Scale °F
Mounting Position Lower mount
Process Connection 1/2" Male NPT Fitting
Insertion Length 100 mm
Stem Diameter 6 mm
Body Material Stainless Steel Case & Wetted Parts
Window Flat Instrument glass
Accuracy Class Class 1 per EN 13190 Standard
Measuring System Bimetal coil
Ambient Temperature Range -40 ... +70 °C

Key Features

  • Model R5502 with 4" (100 mm) dial size for clear local temperature indication.
  • Scale range 0 ... 150 °C with dual °C/°F dial for easy reading in process service.
  • 1/2" Male NPT male process connection with radial bottom mounting for standard installation.
  • 100 mm insertion length with 6 mm stainless steel stem for immersion into the measuring point.
  • Accuracy class 1 in accordance with EN 13190.
  • All-stainless-steel industrial thermometer with stainless steel case and stainless steel wetted parts.
  • Instrument glass window with aluminium dial and black pointer.
  • Bimetal coil measuring element for reliable mechanical temperature indication.
  • Outer black scale for °C readings and inner red scale for °F readings.
  • Suitable for harsh and aggressive environments in the process industry.

Description

The WIKA R5502 bimetal thermometer is a robust process instrument for accurate local temperature indication in demanding industrial service. Built in accordance with EN 13190 and designed for harsh and aggressive environments, it offers an all-stainless-steel construction suitable for chemical, petrochemical, oil and gas, energy, and water or wastewater applications. This version features a 0 ... 150 °C dual-scale dial, 4" dial size, 1/2" Male NPT bottom connection, and 100 mm stem length, making it a dependable fixed-stem thermometer for standard bottom-mounted temperature measurement points.

Note: The pointer reading seen in the product images is because the bimetal thermometer begins indicating temperature as soon as the stem is exposed to its surroundings. Therefore, a reading above zero is normal even for a new/unused product. This also confirms that the thermometer is functioning properly.

Applications

  • Bottom-entry mounting on pipelines and tanks.
  • Chemical and petrochemical process lines.
  • Oil and gas skids and utility systems.
  • Energy, boiler and hot-water services.
  • Water and wastewater equipment.

Documents

  • Wika Bimetal Thermometer Datasheet-84095918

    PDF, 45 KB

  • Wika Bimetal Thermometer Model-55 — Datasheet

    PDF, 748 KB

  • Wika Bimetal Thermometer Operating Instructions-1

    PDF, 1.6 MB

  • Wika Bimetal Thermometer Operating Instructions-2

    PDF, 656 KB

Cross-reference

The closest equivalents from other brands, with the differences stated so you can check before you order.

Reotemp YY0401C59

Reotemp PT Series Bimetal Thermometer, 0–150°C, 4" dial, 1/2" NPT bottom, 4" stem, SS

Reotemp process grade bottom-connect bimetal thermometer with a 4 inch dial and external reset, 4 inch stem, 1/2 inch NPT lower connection and a 0 to 150 degrees C range. Built with 300 series stainless steel head, bezel, mounting bushing and stem, hermetically sealed to ASME B40.3 with IP67 and NEMA 6 protection, glass lens, and accuracy of plus or minus 1 percent of full scale. Suited to local temperature indication on tanks and pipework in chemical, oil and gas and water treatment service. Differences to note before you order: the Reotemp 0 to 150 degrees C dial is single scale in Celsius, while the instrument shown on this page carries a Fahrenheit secondary scale, and Reotemp's dual-scale range list contains no 0 to 150 degrees C pairing. The Reotemp stem is 4 inch (101.6 mm) long against 100 mm here, and 1/4 inch (6.35 mm) in diameter against 6 mm here. Dial size, range, connection, sealing class and accuracy grade are the same on both.

Specifications of the Reotemp part

Dial Size
4 inch
Range
0–150°C
Connection
1/2" NPT bottom
Stem Length
4 inch (~100 mm)
Case Material
304 SS
Stem Material
304 SS

Ashcroft 100AM=060L1000/150°C

Ashcroft Type 50EI60 Bimetal Thermometer, 0–150°C, 4" dial, 1/2" NPT bottom, 4" stem

Ashcroft Series Ax all stainless steel bimetal thermometer built to EN 13190, with a 100 mm dial, a 6 mm diameter stem 100 mm long, a fixed 1/2 inch male NPT lower connection and a 0 to 150 degrees C range. Construction is a 304 stainless steel case with bayonet ring, a 316L stainless steel stem and process connection, an instrument glass window and a silicone damped coil, rated IP66 and accurate to Class 1 of EN 13190. Supplied dry rather than liquid filled. Suited to local temperature indication on tanks, pipework and equipment skids in chemical, oil and gas and water treatment service. One difference to note before you order: the catalogued 0 to 150 degrees C Ashcroft dial is a single Celsius scale, while the instrument shown on this page carries a Fahrenheit secondary scale, and Ashcroft lists dual scales as a special order rather than as a catalogue option. Dial size, range, stem length and diameter, connection size, type and location, all stainless construction, window and accuracy class are the same on both.

Specifications of the Ashcroft part

Dial Size
4 inch
Range
0–150°C
Connection
1/2" NPT bottom
Stem Length
100 mm (4 inch)
Case Material
304 SS
Stem Material
304 SS
Standard
ASME B40.200

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