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ST Series
Thermomètres à dilatation
SPECIFICATIONS TECHNIQUES
• Execution
- N and E.
• Nominal sizes
- 100 and 150.
• Casing
- case and ring in AISI 304 stainless steel (AISI 316 on request - option V61) with bayonet bezel.
• Protection degree (according to EN 60529)
- IP 55 for dry execution;
- IP 65 (option V66 and V72).
• Window
- glass for dry execution;
- laminated safety glass for liquid filled execution or on request (option V17).
• Thermometric element
- Cr Mo steel spiral tube (exec. N);
- AISI 304 C spring (exec. E).
• Movement
- stainless steel.
• Ranges
(according to EN 13190)
o Graduation:
- 0 ÷ 60; 0 ÷ 100; 0 ÷ 120; 0 ÷ 160; 0 ÷ 200; 0 ÷ 250; 0 ÷ 300; 0 ÷ 400; 0 ÷ 500; 0 ÷ 600; -40 ÷ +60; -20 ÷ +40; -20 ÷ +100; (divisions as per table C2 at page P08)
- other graduations not normalized for single or double range (on request).o Unit of temperature:
- °C (Celsius) and °F (Fahrenheit) for single or double range.
o Scale angle:
- 270 °.
• Working temperatures (referred to full scale value)
- from 1/10 to 9/10.
• Over-temperatures (occasionally allowed)
- 115% of full scale value for all ranges except 0÷600 °C.
• Pointer
- aluminium with micrometer adjustment also for execution with electric contacts.
• Dial
- white aluminium with black figures (for dial modifications see available options).
• Accuracy (according to EN 13190)
- class 1;
- class 0,6 (on request - option V36).
note: accuracy indicated on the thermometer does not consider the interference of an eventually applied electric contact.
• Capillary
- AISI 316 stainless steel, plain; (identification KZ)
- AISI 316 stainless steel with flexible AISI 304 stainless steel armour. (identification KY)
note: distance reading thermometers can be identified with the picture number, adding the relating reference of the capillary (K identification), to its material and its armouring (Z or Y identification), followed by the number indicating the length in meters of the same capillary.
• Capillary length
- standard: 1, 2, 3 and 4 meters;
- special: on request;
- maximum: 25 meters .
• Sensitive bulb
(see pages ST09 and ST10)
- 12 mm standard cylindrical diameter;
- 8 mm standard cylindrical diameter.
• Thermowell
(see at pages PZ01, PZ02 and PZ03)
- built-up from pipe - P2 and P4 type;
- drilled from solid bar stock - P3 and P5 type (dimensions and materials are decided by the customer).
• Thermal drift
- with reference to the ambient temperature of 20 °C and due to the length of the capillary, thermal drift affects the instrument accuracy as ± 0,15% per meter every 10 °C of variations.