TB/TW温度监控器

添加时间：2009-12-1 编辑：读取中…… 阅读：次

The J TB/TW is a freely programmable temperature limiting device.The measurement input is freely configurable for resistance thermometers and thermocouples,as well as for current and voltage signals.TB/TWs monitor thermal processes in systems for a set limit value. If this is exceeded, thebuilt-in relay switches the system to a safe operational state and the LED K1 lights up.When the system returns to the o.k. region, the reset button (on the TB) has to be releasedmanually using an appropriate tool.The TW, on the other hand, is reset automatically without any external action.The 4.5V/20mA logic output produces a pre-alarm signal at an adjustable temperature beforereaching the limit value, which is additionally indicated via the LED K2.TB/TWs are mounted on DIN rails and wired up by means of screw terminals with 2.5mm²max. conductor cross-section. A PC setup program is available as an accessory, which can be used to set and storeprobe type, range, output action and inhibits. Key features  Setup program for configuring andarchiving via PC  Clear, easy-to-read alphanumerical display  Digital input filter with adjustablefilter time constant Short 90 msec sampling interval  Pre-alarm adjustable as absolute value orrelative to limit value  Wide supply voltage range110 — 240V AC +10% /-15%V  Configurable as TB or TW  17 linearizations can be set  Internal and external locking options  2xPt100 input for differential measurement