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· 4-digit LCD display 48 x 96 mm
· Loop-powered
· Easy scalable from front keys
· Backlight
· Intrinsically safe EEx ia IIC T6
· IP65 enclosure from front
Application: The PReview 5531 indicator is ideal for local readout of 4...20 mA current signals scaled directly in process units.
· PReview does not need any external power supply since the indicator is powered by the 4...20 mA loop signal.
· The EEx-versions can be used for local readout in hazardous areas classified as zone 0,1 or 2.
Technical characteristics:
Input: 4...20 mA standard signal. An adhesive label with process units may be attached to the
front below the digits. Input voltage drop is £ 1.5 VDC, corresponding to a feed-through resistance of 75 W (when backlight is switched off). Reversed display readout is possible, see routing diagramme on reverse.
Programming/scaling:
DIP-switch 1, switch 1 on the rear panel is used to enable/disable the front keys thus facilitating scaling.
Scale mode: In scale mode the indicator may be scaled, see routing diagramme on the reverse side of this data sheet.
Run mode: In run mode the indicator will display the actual current according to the scaling.
Backlight: DIP-switch 1, switch 2 and 3 on the rear panel is used to select backlight intensity, see programming on the reverse of this data sheet. Please note that the input voltage drop is dependent on backlight intensity.
See data sheet for full electrical specification. |
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