TK8000-Ex Thermal Resistance Zener Barrier

Http://www.ahdqjt.com     Time: 11/26/10 15:50

General 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