Keller Swiss-Built Series 25HTC High temperature pressure transmitter

This piezoresistive high temperature transmitter (-transducer) is suited for media temperatures up to 300!aC. The pressure, acting onto the flush diaphragm, is transferred over an oil-fille capillary onto the silicon measuring cell. The capillary has the function of a cooling spiral. When measuring media with temperatures of 300!aC, the temperature at the silicon cell onl
increases by 100!aC. The integrated amplifier electronics provide a voltage- or current signa proportional to the pressure.
For highly aggressive media, KELLER offers pressure ports in different materials.
SPECIFICATIONS
PA(A) 25HTC PAA: Zero at Vacuum   PA: Zero at 1bar absolute
PR-25HTC PR:   Vented Gauge
Pressure Ranges0,20,51,02,05,0102025bar
Overload2,52,53,05,07,5153030bar
PAA: Zero at Vacuum   PA: Zero at 1bar absolute
PA(A) 25HTC
Pressure Ranges501002004006001000bar
Overload751503005007001100bar
Linearity Error<0,5%FS (optional 0,2%FS and 0,1%FS)
Media Temperature25!-300!
T.C. of Zero<0,03%FS/!a
T.C. of Sensitivity<0,02%FS/!a
Frequency Rangetyp. 50 Hz (function of media temperature)
Insulation>10 M @ 50 V
2-Wire
3-Wire
Excitation13...28V10...28 V
Output0...10V / 0...20mA4...20mA
Load Resistance (R )>5k(U-10 V)/0,02 A
Pressure ConnectionG 1/2!±,G 3/4
Material in Media ContactStainless Steel 1.4435 (316 L)
Length of Colling Spiral50 mm
Electrical ConnectionBinder Plug Series 723
Weight 220 g
MountingHorizontal position (carrying-off of heat).
Cooling spiral exposed to room temperature.
OptionsProgrammable (25 HTC-PRO).
Others on request.

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