Diesel engine remote reading dial thermometers types 311 WH, 321 TA, 331 KL


Product description

Possible areas of application

Remote reading dial thermometer type 321 for diesel engines

SIKA diesel engine remote reading dial thermometers are the ideal solution for temperature measurement of fluids and gases on large diesel engines, e.g. for marine propulsion or in the diesel electric power generation area. Depending on the display range, they are useful for measuring exhaust gas, cooling water, lubricating oil and charge air temperatures. They have a long service life and do not require any external power.



Type 311, 321 and 331 dial thermometers are capillary line thermometers comprising a crimped-on ring case, capillary line and immersion tube. Housings, capillary lines as well as immersion tubes and connections are made of stainless steel. All devices comply with EN 13190 and meet the class 1 requirements.

The devices are available in the nominal sizes 80 and 100mm. The crimped housing are permanently sealed (IP65) and are supplied standard filled with silicone oil to protect against vibrations.

The device display can be supplied with a wall bracket, front/rear mounting flange or clamping bracket so it can be mounted in an easy to read position. The capillary line is routed to the actual measurement point and connects the measuring system and display unit. The capillary line in these versions comes standard protected with a stainless steel spiral guard against mechanical damages.

The customary display ranges are 0...100°C, 0…120°C, 0…160°C, 0…200°C and 50…650°C. Diesel engine remote dial thermometers are equipped with plain immersion tubes and adjustable compression fittings with G1/2 or G3/4 male threads. The immersion tube diameter is 12 mm as a standard (optional 13 mm without surcharge). The immersion tube in jacketed-sensor design is optimised for tough use. If desired, we can also supply matching solid-material protection tubes for the thermometers.

SIKA is the OEM supplier of many renowned engine manufacturers. In addition to our standard range we also fabricate special versions based on customer specifications. A great number of options are available. Please get in touch with us!



 Germanischer Lloyd

Technical features

Technical features

Display range*

0...100 °C
0...120 °C
0...160 °C
0...250 °C
50...650 °C
Measuring system Nitrogen filled
Accuracy (EN 13190) Class 1
Case With crimped-on ring, stainless steel 1.4301
Degree of protection (EN 60529) IP65
Nominal sizes
80 mm
100 mm
Immersion tube Stainless Steel
Standard immersion tube lengths (l1) 100, 135, 160, 200, 250, 300, 400 mm
Connection type Adjustable compression fitting
Connection thread G½, G¾

* Dual scale °C and °F available on request


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