Application
Industrial type design for fluid medium which does not
corrode 304 stainless steel. Designed for applications
requiring local readability using a mechanical measuring
element while affording an additional means of electronic
data acquisition from the same instrument.
Sizes
5″ (127 mm) – Type TT.50
Accuracy
+ 1.0% of measurement range
Ranges
-40 oF to 550 oF (and equivalent Celcius)
Over/Under Range Protection
Temporary over or under range of 50% (maximum
exposure 500 oF)

Standard Features
Connection
Material: 304 stainless steel
Center back mount (CBM) – Type TT.50
1/2″ NPT standard
Stem
Material: 304 stainless steel
Diameter: 1/4″ (6.35 mm)
Length: 2 1/2″ to 48″ (63.5 mm to 1,219.2 mm)
Measuring Element (Mechanical)
Bi-metal helix
Measuring Element (Electrical)
Thermocouple
Type K Grounded Junction Thermocouple standard
(Type J, E, and T available)
RTD
Platinum 100-ohm, DIN curve (0.00385 Ohm/Ohm/oC)
(3 wire standard configuration)
Case
Material: 304 stainless steel
Hermetically sealed per ASME B40.3 standard
External reset slotted hex head on back of case
Dial
White aluminum, dished, with black markings
Pointer
Black aluminum
Standard Scales
Single: Fahrenheit or Celsius
Dual: Fahrenheit (outer) and Celsius (inner)

Window
Flat instrument glass
Order Options
Weather-proof Housing and Plug
7/8-20 UNEF threaded barrel with busing and compression nut. Provides environmental protection to thermocouple/RTD connection.
Electrical Connection With Lead Wire (½ NPT)
Available in thermocouple or RTD in 6″ increments. Allows site installation using other enclosures or piping systems.
Thermocouple Enclosure Head
A protective enclosure threads onto the optional ½ NPT electrical connection. The housing protects electrical connections from the environment. Houses a 4-20 mA transmitter or terminal block. Aluminum housing is standard.
Terminal Block
Provides a connection point for the thermocouple or RTD. Mounts in thermocouple head with 2 screws.
4-20 mA Transmitter
Refer to transmitter specifications
Additional Options
Thermowells
Acrylic, Lexan, and safety glass window
Calibration certification traceable to NIST
Warranty
Limited one year warranty as stated in WIKA’s
Terms & Conditions of Sale