17. Accessories
External control units
Application Type designation
Order number
Features
Progressive systems IGZ51-20-E Pulse generator/counter with selectable intermittent or continuous pump operation, with
adjustable stroke rate, selectable interval time and monitoring time, and monitoring of
fill level and pump cycle time
Progressive systems IGZ51-20-S2-E Same as IGT51-20, but with non-volatile memory in case of power failure
Piston distributor for
single-line systems
IGZ51-20-S3-E Pulse generator/counter with adjustable interval time, interval time extension, monitor-
ing of pressure build-up and reduction, adjustable delay time and connectable non-vola-
tile memory in case of power failure
Progressive systems IGZ51-20-S7-E Same as IGZ51-20-S2, but with fill level switch as NC contact,
pump cycle time = set monitoring time
Progressive systems IGZ51-20-S8-E Pulse generator/counter with selectable intermittent or continuous pump operation,
prelubrication, selectable interval time and monitoring time, monitoring of fill level,
pump cycle time and pulses, and non-volatile memory in case of power failure
Page 107
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