March 2012

Multi-pair Foundation fieldbus M-EZ (Marshaling EZ) cables are FF-844 certified by the Fieldbus Foundation. The cables are part of the DataCELL Foundation line and are engineered with up to 24 individually foil-shielded pairs, with an extruded polyvinyl chloride (PVC) binder over each pair, all in a single cable. Installation is quick and easy, and requires no shrink tubing. The line also features single-pair cables. Both types of cable are available with an optional ground wire. The cables’ characteristic impedance Z0 is controlled to be 100 O ±10 O at 31.25 kHz.

The Wave TTA module functions as a signal isolator, transmitter, converter, linearizer, and trip amplifier. It accepts all common types of analog direct current (DC) inputs, such as temperature and frequency. All output types (e.g.,bipolar) can be set on this 45-mm-wide unit. Input/output configuration changes may be performed on a PC with free, downloadable software. The module can be mounted in any location using almost any power supply. Its –40°F to 158°F operating temperature range allows mounting in either a factory or field enclosure.

P420 Series plastic, vortex-shedding flowrate transmitters have no moving parts that can stick, bind, or become coated. They can handle fluids with viscosities to 4.5 cP or 50 SUS. In certain models, wetted parts are constructed entirely of polyvinyl chloride (PVC) or chlorinated PVC (CPVC) for improved heat resistance.

The Wafer-Cone flowmeter features a modular design that allows users to replace the flow element in order to adapt the device to changing flow conditions in dynamic processes. It uses differential pressure technology with built-in flow conditioning to achieve an accuracy of ±0.5% and a repeatability of ±0.1%. The pressure difference between the static line pressure and the low pressure downstream at the cone is measured via two pressure-sensing taps, and is then used with a derivation of the Bernoulli equation to calculate the fluid flowrate.