How to read the model of a thermal resistor
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One of the thermoresistors in my company has failed; the specific model is H-WZPK-440i. I know that WZPK stands for: W – temperature, Z – thermoresistor, P – PT100, K – armored. But what do H and 440i mean? Do they indicate the length? Also, what about the M that follows H-WZPK-440i-M? This post was last edited by hezhh1999 on 2009-4-14 13:29.]
4 Installation and fixing method: Fixed flange; 4 Wiring box type: Explosion-proof; 0 Protection tube diameter: 16 mm; M Display type: Analog display; i was unable to find information on this. It would be best for you to check your manufacturer’s selection table.
What was said on the second floor is correct; it is indeed fixed using flanges, the protective tube has a diameter of 16 mm, and it’s a waterproof junction box. Does that mean that this model includes the types of measuring elements, junction boxes, and protective sleeves, rather than just the type of armored thermoresistor? Is that correct? But it’s just the armored thermistor that’s broken; the other parts don’t require a procurement plan. The name and model I have specified are: armored thermoresistor H-WZPK-440i, Pt100, with a length of 450 mm and an outer diameter of Φ5.0 mm. Its operating range is from -200 to 350 degrees. I’m not sure if this is acceptable. Please give me some advice. I am extremely grateful.
The original poster wrote “thermocouple,” but it is actually an integrated thermal resistor. It is usually the electronic module that fails; you can try replacing it by ordering a few modules.
The topic seems to be off-topic in terms of the content being discussed... The title mentions thermocouples, but here it’s about thermal resistors... They’re not the same thing...
■ Naming method for thermocouple assemblies: Example of model WRN2-231 G. Model description: W – Temperature instrument; R – Thermocouple; M – Material of the temperature-sensing element: Nichrome-silicon–Nickel-silicon; N – Nichrome–Nickel-silicon; E – Nichrome–Copper-nickel; C – Copper–Copper-nickel; F – Iron–Copper-nickel. Number of wires: 1 for single wire without a pair, 2 for two wires. Installation and fixation method: 1 – No fixing device; 2 – Fixed thread; 3 – Movable flange; 4 – Fixed flange; 5 – Flexible pipe joint type; 6 – Fixed threaded cone type; 7 – Straight pipe joint type; 8 – Fixed threaded pipe joint type; 9 – Movable threaded pipe joint type. Type of junction box: 2 – Explosion-proof type; 3 – Waterproof type. Diameter of protective tube: 0 – Φ16; 1 – Φ20; 2 – Φ16 (high-alumina tube); 3 – Φ20 (high-alumina tube). Shape of working end: Variable cross-section. Naming method for armored thermocouples: Example of model WZPK2-236G. Model description: W – Temperature instrument; R – Thermocouple; P – Material of the temperature-sensing element: P – Platinium-rhodium 10–Platinum; M – Nichrome-silicon–Nickel-silicon; N – Nichrome–Nickel-silicon; E – Nichrome–Copper-nickel; C – Copper–Copper-nickel; F – Iron–Copper-nickel; K – Armored type. Number of wires: 1 for single wire without a pair, 2 for two wires. Installation and fixation method: 1 – No fixing device; 2 – Fixed collar thread; 3 – Movable collar thread; 4 – Fixed collar flange; 5 – Movable collar flange. Type of junction box: 2 – Explosion-proof type; 3 – Waterproof type; 6 – Circular plug-in type; 7 – Flat plug-in type; 8 – Handle type; 9 – Compensation wire type. Shape of working end: Insulated type. Additional devices: 1 – Contact block type; G – Clamp type. That’s roughly it
How can I find its test temperature range from the model number?
I learned something and gained knowledge. Thank you