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Stainless steel dial thermometer with glass lens, 3 inch face, 2.5 inch stem, 1/2 NPT back connection, 0 to 140 F range

Dwyer Instruments Inc.

Dwyer Instruments BTM32511D bimetal thermometer 0 to 140 °F

SKU CH-S3TS-PSDSM

A bimetal thermometer measuring 0 to 140 °F with a 2.5 in stem and 3 in dial

  • Product typeEnvironmental & Mechanical
  • Tracks high and low readings with min/max memory
  • Measures 0 to 140 °F for wide-range monitoring
  • Stainless steel housing resists corrosion in harsh settings
  • 5 in stem fits standard 1/2 in NPT connections
  • Glass lens protects dial from impact and debris

Industrial temperature monitoring

The Dwyer Instruments BTM32511D bimetal thermometer measures from 0 to 140 °F and -17.8 to 60 °C. A 3 in dial with glass lens provides clear local reading. Stainless steel housing withstands harsh environments. The 2.5 in stem mounts via 1/2 in NPT back connection.

Replacing basic gauges

Upgrade from non-certified thermometers when process documentation requires traceable accuracy. The jump is worth it for HVAC, food safety or pharmaceutical lines where auditors demand verified calibration records. No certificate is included, so plan separate NIST calibration if your quality system requires it.

Panel and pipe integration

Back-mounted NPT threads install directly into threaded fittings or thermowells. Stainless stem resists corrosion in water, steam or chemical service. Glass lens resists scratching better than plastic alternatives. Ensure the 2.5 in immersion depth suits your process connection before ordering.

How it compares

Measured against everything we stock in Test Equipment & Meters, at today’s prices. Recalculated every night.

Price $85.99
Cheaper than about 57% of the 202 comparable items (median $148.99).

Specifications

Product
Brand nameDWYER INSTRUMENTS
Product typeEnvironmental & Mechanical

Questions about this item

What stem length and thread size does the BTM32511D need to mount?

The thermometer has a 2.5 in stem and a 1/2 in NPT back connection for direct threading into a fitting.

How is the Dwyer BTM32511D installed, and what step is often missed?

Thread the 1/2 in NPT back connection into the process fitting and tighten with a wrench on the stainless steel housing; do not force the 3 in dial or glass lens.

What maintenance will the 0 to 140 °F bimetal thermometer need later?

No routine maintenance is required; if the pointer drifts outside the 0 to 140 °F / -17.8 to 60 °C range, replace the unit.

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