RESISTANCE TEMPERATURE DETECTOR
RTD Series
*DESCRIPTIONS
Temperature can be measured by utilizing a pure metal wire’s resistance,
which increases at a fixed rate with increasing temperature. Platinum
resistance elements used most commonly for this purpose consist of a
pure platinum resistance wire wound around a mica strip and covered by
a protective sheet of mica, plus a sheet of stainless steel or other material.
Some elements are formed by winding the resistance wire around a glass
or mica core frame and sealing the assembly in a hard glass or ceramic
tube. The element is attached with lead wires (two or three) and put in a protecting tube, with a terminal box and mounting fittings connected.
*FEATURES
RTD series has better accuracy, quicker response time and smaller measuring range than thermocouples.
*SPECIFICATIONS
Resistance(Ω)：PT100；PT500；PT1000
Stem：
Type- Threaded type；Flanged type；Sanitary type (Sizes can be ordered)
Length- made-to-order
O.D.- 3.2；4.8；6；6.4；8；9.5 or 9.6；10；12.7 mm)
Material- SUS304 (≦750℃)；SUS316 (≦850℃)；SUS310S (≦850℃)；
Ceramic (≦1500℃)
Thermowell (Option)：
Type- Threaded type；Flanged type；Weld type；Integral type
Material- SUS304；SUS316
(＞600℃ please see TC series)
Junction Box Type：
Climate-resistance small sealed round head- 3/8”PT connection；
Climate-resistance big sealed round head- 1/2”PT connection；
Pessure-proof and anti-explosion connection (D2G4)-1/2”PT or 3/4”PT
Open connection (flying lead connection available)
Temperature Ranges：-200℃ / +850℃ (The best linear range- -50℃ / +400℃)
Accuracy：A；B class
Wiring：2 wires(AB)；3 wires(ABb)- industrial use；4 wires (AaBb)- lab and medical use
Option：Analog signal output- 4-20mA transmitter in junction box (big round head only)
