tk8000-ex thermal resistance zener barrier
http://www.ahdqjt.com time: 11/26/10 15:50general description
tk8000-ex thermal resistance zener barrier,can prevent dangerous energy fleeing from the safe side to a dangerous place. it also receives thermal resistance signals from the scene(see function diagram), so that the system works with the intrinsic safety explosion-proof performance.
main technical parameters
explosion-proof marker:[exia] ⅱc
the danger zone input: thermal resistance signal
the safety zone output:: thermal resistance signal
output accuracy:0.1% f.s
temperature drift:0.01% f.s/℃
continuous operating temperature:-20~+60℃
certified by china national quality supervision and test center for explosion protected electrical products(cqst)
(among terminals 9、10、11、13、14 and 15)
u0=4v、i0=90ma、c0=100μf、
l0=4.2mh、p0=0.09w
applying to field devices: the two-wire rtd, three-wire rtd (pt100) and thermocouple j, t, e, k, s, b
instrument selection
type |
input signal |
output signal |
channels |
tk8071-ex |
pt100,cu50 |
pt100,cu50 |
single |
tk8072-ex |
pt100,cu50 |
pt100,cu50 |
double |
meters
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