Spirax Sarco SP400 and SP500 digital electropneumatic valve positioners
Lloyds Registry EMEA has confirmed the air consumption rates of Spirax Sarco’s SP400 and SP500, making them leading energy-efficient digital electropneumatic valve positioners.
The SP400 and SP500 are quick and easy to install and commission, with the latter being complete in three button pushes or fewer. This simplicity of use minimises plant downtime, while non-contact position feedback technology reduces installation time and provides increased accuracy and reliability over mechanical linkages. The SP500 is feature rich and also supports the HART protocol.
The SP400 and SP500 have been confirmed as highly energy-efficient electropneumatic positioners, based on steady state air consumption. All pneumatic positioners leak some air holding an actuator in steady and transient state, and these leak rates are stated in positioner technical documentation.
The SP400 and SP500 have been certified by Lloyd’s Registry EMEA to have the minimal leak rate of 0.48 dm3/h (1.01 ft3/h), which vastly reduces the cost of wasted compressed air.
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