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SKU: ZX-470 Factory Calibrated / Ready to Ship
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Economy Bi-metal Thermometer

Model 412 For HVAC & hot water
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description Technical Overview

Zedeyes 412 Economy Bi-metal Thermometer

The Zedeyes 412 is an economical bimetal temperature gauge designed specifically for hot water systems, HVAC equipment, commercial appliances, and general machinery manufacturing. Often referred to as a hot water thermometer, it provides reliable, cost-effective temperature indication for liquids and gases across a wide operating range of −30 °C to +500 °C.

The 63 mm dial version is widely utilized in commercial coffee machines, food preparation equipment, and small boilers, while the 100 mm version serves larger HVAC collectors, tanks, and piping networks. Every Zedeyes 412 comes equipped with a protective thermowell that shields the sensing stem from high line pressures (up to 60 bar) and allows quick gauge replacement without draining the system.

Key Features & Benefits

  • Dual-Function Protective Thermowell: Includes a removable brass (63 mm) or SS316 (100 mm) thermowell that isolates the stem from process pressure, enabling seamless replacement without interrupting plant operations.

  • Cost-Effective Bimetal Precision: Delivers Class 2.0 measurement accuracy across broad temperature spans at an economical price point.

  • Commercial Appliance Ready: Compact 63 mm size is ideal for direct integration into commercial espresso/coffee machinery, cooking equipment, and heating skids.

  • High Pressure Resistance: Thermowell rating up to 60 bar ensures safe operation in high-pressure hydronic and steam loops.

  • Wide Range Availability: Available in 13 standard scale ranges spanning sub-zero cooling to high-temperature heating applications.

Primary Applications

  • HVAC & Hydronic Heating: Hot water boiler headers, radiator lines, and climate control collectors.

  • Commercial Appliances & Cooking: Commercial espresso machines, industrial coffee roasters, fryers, and food service equipment.

  • Tanks, Storage Vessels & Collectors: Process water tanks, solar thermal collectors, and expansion tanks.

  • Machinery & OEM Equipment: Fluid utility lines, small compressors, and OEM equipment manufacturing.

Specification Details
Nominal Sizes 63 and 100 mm
Temperature Ranges −30 to +50, −30 to +60, −30 to +70, −20 to +120, 0 to +60, 0 to +100, 0 to +120, 0 to +160, 0 to +200, 0 to +250, 0 to +300, 0 to +400 and 0 to +500 °C
Maximum Thermowell Pressure 60 bar
Temperature Element Bimetal sensor
Storage and Transport Temperature −20 to +60 °C
Accuracy Class 2
Window Glass
Stem Material Copper alloy
Stem Diameter 9 mm
Thermowell Material – 412-63 Brass
Thermowell Material – 412-100 SS316
Thermowell Diameter 12 mm
Available Insertion Lengths 40, 50, 100, 150, 200, 300, 400, 500 and 600 mm
Zero Adjustment Yes, located at the bottom of the stem

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