New or improved in-cavity sensors for melt pressure, temperature, and mold protection are available from Kistler Instrument Corp., Amherst, N.Y. Its 6189A Series combined pressure/temperature sensor for small parts now comes in a 6190B version offering faster temperature response and increased pressure sensitivity. The sensor has a front diameter of 4 mm (vs. 2.5 mm for the 6189A) and has thermocouple leads threaded through the pressure-sensing elements. It can handle up to 29,000 psi and 1292 F. Kistler also expanded its line of small piezoelectric pressure sensors with indirect and direct types. Its new Type 9210A indirect-measuring sensor is 4.4 mm long and has a 1.2 mm front diam. Kistler's new Type 6184A direct-measuring sensor is 6.4 mm long and has 1.2 mm front diam. They both handle pressures up to 29,000 psi. Indirect sensing is one solution to measuring cavity pressure for optical parts with stringent finish requirements. Kistler developed new non-contact pin sensors for indirect measuring. These 9243B, 9245B or 9247A sensors are placed behind the cavity wall to measure the compression strain of the steel in response to the melt pressure. The pin sensor cannot mar the optical part surface and avoids influencing the temperature near the surface of the mold. Also new is a mold-protection sensor that contains the measuring element and electronics in a single case. Strain transmitter Type 9238A measures small forces during mold movement and closing. The transmitter can be mounted with a single screw. Tel: (716) 691-5100 . www.kistler.com
Kistler Instrument Corp.
75 John Glenn Drive Amherst, NY 14228-2171
Phone (716) 691-5100 Fax (716) 691-5226