The EDS 3300 is a compact electronic pressure switch with integrated digital display for relative pressure measurement in the low pressure range.
It has a ceramic measurement cell with thick-layer strain gauge. Depending on the particular version, the instrument can have one or two switching outputs, and there is the option of an additional switchable Analog output signal (4 to 20 mA or 0 to 10 V).
A special design feature of the EDS 3300 is that the display can be moved in two planes. The device can be installed in almost any mounting position and the display can be turned to the optimum position without the usual additional expense of a mechanical adapter.
The programmable electronic pressure switch in the series EDS 4000 was specially developed to combine the advantages of a compact, robust and cost-effective instrument with the benefits of a programmable pressure switch. The EDS 4000 can be easily programmed using the HYDAC HPG 3000 Programming Unit. Once the programming unit is disconnected from the EDS 4000, the pressure switch retains all the settings. This prevents unauthorized or incorrect adjustment of the settings. The following parameters can be changed:
In contrast to pressure switches which are factory-set acc. to customer requirements and not field-adjustable, the programmable EDS 4000 is highly versatile and replaces a wide range of models. This is advantageous in respect of stock management. An ATEX version of the EDS 4000 is also available for use in potentially explosive atmospheres.
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The programmable electronic pressure switch EDS 4400 with flameproof enclosure has triple approval acc. to ATEX, CSA and IECEx which ensures the instrument is universally suitable for use in potentially explosive atmospheres worldwide. Each instrument is certified by the three approvals organizations and is labelled accordingly. Therefore there is no longer any need to stock multiple devices with separate individual approvals.
As with the industry model of the EDS 4400, those with triple approval have a proven, fully-welded sensor cell with a thin-film strain gauge on a stainless steel membrane without internal seal. The instrument is programmed conveniently and simply using the HYDAC Programming Unit HPG 3000.
The main fields of application are in mining and the oil & gas industry, e.g. in underground vehicles, hydraulic power units, blow-out preventers (BOPs), drill drives or valve actuation stations as well as in locations with high levels of dust contamination.
