Selection of compensation wires for Type B thermocouples
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Dear experts, we have several Type B thermocouples at the construction site that require wiring. There is some KYJVP2*1 cable available on site, and I was wondering if this type of cable can be used as a compensation wire for Type B thermocouples? Thank you all.
A regular control cable will do; it’s best to use a shielded cable to prevent interference
It generally won’t work. For temporary use; the user must be provided with manual correction values. For long-term use, temperature variation can be installed on-site.
Signal interference needs to be taken into account; it is best to use shielded cables, and KYJVP2*1 is a shielded type
If accuracy isn’t a concern, it’s fine; a safety barrier can be added on-site to avoid this issue: lol
The compensation wire for thermocouples is a specialized cable.
For thermocouple connections, a compensation wire is required; the thermoelectric properties of this compensation wire are essentially the same as those of the thermocouple at ambient temperatures (usually within the range of 0–50°C), and this needs to be verified. Additionally, if the cold junction temperature of the thermocouple is the same as the temperature in the control room (at the instrument connection point), a regular shielded cable will suffice.
The thermoelectric potential of type B thermocouples is extremely low at room temperature, at 60 degrees it is only 6 microvolts. If the cold junction temperature of the thermocouple remains below 60 degrees for an extended period, the effect of using copper wire is negligible.
There’s no dedicated compensation wire for type B, right?
Type B thermocouple compensation wires: BC-GA-VV: Polyvinyl chloride insulated and sheathed, precision grade B thermocouple compensation wire. BC-GA-VVR: Polyvinyl chloride insulated and sheathed, precision grade B thermocouple compensation flexible wire. BC-GA-VVP: Polyvinyl chloride insulated and sheathed, with copper wire shielding, precision grade B thermocouple compensation wire. BC-GA-VVRP: Polyvinyl chloride insulated and sheathed, with copper wire shielding, precision grade B thermocouple compensation flexible wire. BC-HA-FF: Fluoroplastic insulated and sheathed, precision grade B thermocouple compensation wire. BC-HA-FFR: Fluoroplastic insulated and sheathed, precision grade B thermocouple compensation flexible wire. BC-HA-FFP: Fluoroplastic insulated and sheathed, with copper wire shielding, precision grade B thermocouple compensation wire. BC-HA-FFRP: Fluoroplastic insulated and sheathed, with copper wire shielding, precision grade B thermocouple compensation flexible wire. BC-HA-FG: Fluoroplastic insulated and silicone rubber sheathed, precision grade B thermocouple compensation wire. BC-HA-FGR: Fluoroplastic insulated and silicone rubber sheathed, precision grade B thermocouple compensation flexible wire. BC-HA-FGP: Fluoroplastic insulated and silicone rubber sheathed, with copper wire shielding, precision grade B thermocouple compensation wire. BC-HA-FGRP: Fluoroplastic insulated and silicone rubber sheathed, with copper wire shielding, precision grade B thermocouple compensation flexible wire. BC-HA-FV: Fluoroplastic insulated and polyvinyl chloride sheathed, precision grade B thermocouple compensation wire. BC-HA-FVR: Fluoroplastic insulated and polyvinyl chloride sheathed, precision grade B thermocouple compensation flexible wire. BC-HA-FVP: Fluoroplastic insulated and polyvinyl chloride sheathed, with copper wire shielding, precision grade B thermocouple compensation wire. BC-HA-FVRP: Fluoroplastic insulated and polyvinyl chloride sheathed, with copper wire shielding, precision grade B thermocouple compensation flexible wire. BC-GA-YJV: Cross-linked polyethylene insulated and polyvinyl chloride sheathed, precision grade B thermocouple compensation wire. BC-GA-YJVR: Cross-linked polyethylene insulated and polyvinyl chloride sheathed, precision grade B thermocouple compensation flexible wire. BC-GA-YJVP: Cross-linked polyethylene insulated and polyvinyl chloride sheathed, with copper wire shielding, precision grade B thermocouple compensation wire. BC-GA-YJVRP: Low-smoke, halogen-free insulated and sheathed, with copper wire shielding, precision grade B thermocouple compensation flexible wire. BC-GA-YDYD: Low-smoke, halogen-free insulated and sheathed, precision grade B thermocouple compensation wire. BC-GA-YDYD R: Low-smoke, halogen-free insulated and sheathed, precision grade B thermocouple compensation flexible wire. BC-GA-YDYD P: Low-smoke, halogen-free insulated and sheathed, with copper wire shielding, precision grade B thermocouple compensation wire. BC-GA-YDYD RP: Low-smoke, halogen-free insulated and sheathed, with copper wire shielding, precision grade B thermocouple compensation flexible wire