Parameters of double steel wire grain bin temperature cable for vertical silo:
Double steel wire transmission signal
Tensile strength > 350kg
Double tensile steel wire
Edible grade outer sheath
Application environment: it is mainly used to measure multi-point temperature values with an accuracy of more than 0.5 ℃ in the environment of – 50 to 85 degrees.
Appligrain bin temperature cable to (1) bungalow grain warehouse / low and shallow round warehouse
(2) Temperature measurement in machine room
(3) Concrete temperature measurement
(4) grain bin temperature cable temperature measurement
(5) Cold storage temperature measurement
(6) Environmental temperature measurement
(7) Soil layer temperature measurement
(8) Battery temperature measurement and other occasions requiring certain tensile strength, or multi-point temperature measurement.
The following environments are not recommended: (1) scenes with large impact force
(2) Scenes with high tensile strength requirements
(3) Completely immersed in water
(4) Occasions with strong electromagnetic interference
(5) Occasions where the temperature is maintained or exceeded 80 ℃ for a long time
(6) Occasions requiring long-distance temperature measurement.
Basic parameters:
grain bin temperature cable insulation outer sheath material: high voltage polyethylene (good compression and wear resistance)
grain bin temperature cable inner core: Double tensile steel wire
Temperature measurement chip: 18B20 (DS18B20 / qt18b20 / ct18b20)
Chip temperature measurement accuracy: ≤± 0.5 ℃, repetition error ≤± 0.2 ℃
Chip temperature measurement range: – 55 ℃ to 125 ℃
Recommended service environment of grain bin temperature cable: – 50 ℃ to 85 ℃
Chip acquisition mode: two-wire system (parasitic mode)
grain bin temperature cable waterproof grade: ip58
grain bin temperature cable anti gas: it can prevent fumigation corrosion.
Core color: the edge without color is GND wire, and the edge with color is DQ wire.
grain bin temperature cable number: the sorting value in th (grain bin temperature cable number storage) and TL (layer number storage) memory can be customized.
Tensile parameter: > 350kg
Working voltage: 3-5.5 VDC
Minimum interval between two points: 20cm
Structural features: This product is a plastic outer sheath. There are two inner cores inside. The bottom end is treated with injection molding process, and the tail die-casting steel wire ring is convenient to use. The protection grade is ip58. Both signal core and ground wire core use steel wire to transmit signals. N 18b20 temperature sensors can be built in. Double steel wires not only transmit signals, but also take into account the role of overall tension. The overall shape is flat, the stress area is smaller, and the tensile strength is higher than that of zs-p-1 model.
Generally, a connector is injected into the upper part of the grain bin temperature cable to facilitate wiring. The other end connector leads out two core copper wires and is directly connected to the collector.
Connect with the upper communication line. In order to ensure the communication quality, the inner diameter of the core of the communication grain bin temperature cable shall not be less than 0.2mm ²。 0.5mm is recommended for long-distance communication ² Twisted pair as extended communication grain bin temperature cable
Long distance temperature measurement is not recommended. If long-distance temperature measurement is required, please change the single-chip microcomputer source code to single-point conversion (i.e. 750ms to convert a temperature point, do not use centralized conversion). The maximum test distance is 1300m [single channel 220 points]