en

KD

Overview

The KD Series are pressure sensors  for use in high temperature applications where the process temperatures may reach 538°C (1000°F) such as high temperature engineered polymers.

The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage.

A near incompressible sodium-potassium (i.e. NaK) mixture is used for pressure transmission.

NaK is FDA recognized safe (GRAS) substance.

Application:

  • As for FDA approval,  K series is suitable for Mercury free , food and medical application
  • Processing  special polymers, technopolymers (538°C /1000°F)

Description

Electrical

  • Digital output signal with DP404 CAN OPEN communication protocol
  • Transmission frequency (Baud rate): 10 Kbaud to 1 Mbaud (default 500 Kbaud)
  • Software / Hardware selection of Baud rate and ID nodes
  • Operation with 1 or 2 settable alarm limits
  • “Autozero” for temperature compensation
  • Zero and span drift compensation
  • 80% FSO calibration signal

 

Mechanical

  • Pressure ranges: 0-35 to 0-700 bar / 0-500 to 0-10000 psi
  • Accuracy: < ± 0.25% FSO (H); < ±0.5% FSO (M)
  • Hydraulic transmission system to guarantee temperature stability (NaK). Liquid conforming to RoHS Directive. NaK is defined as a safe substance (GRAS).
  • Quantity of NaK contained per model: KD0 series (30mm3) (0.00183 in3), KD1,KD2,KD3 series (40mm3) (0.00244 in3)
  • Standard threading: 1/2-20 UNF, M18x1.5; other versions on request.
  • Inconel 718 diaphragm with GTP coating for temperatures up to 538°C (1000°F)
  • 15-5 PH diaphragm with GTP coating for temperatures up to 400°C (750°F)
  • Hastelloy C276 diaphragm for temperatures up to 300°C (570°F).
  • 17-7 PH corrugated diaphragm with GTP coating for ranges below 100 bar-1500 psi

Downloads

Gefran product range brochure
Melt pressure sensors
4.0 Gefran product catalog
4.0 plastic application catalogue
KD datasheet
Can Open DP404 Digital Output (Operating Handbook)
Manual of electrical installation for pressure probes
User’s Manual – Pressure Sensors for high temperature
EDS (MD, WD, KD CanOpen)
Kunstoffemagazine 12/2010: Schmelzedruckmessung mit neuem Impuls

Certifications

EU Conformity declaration_K, W, HW, HK and PLc
GTP+ FDA Certificate