pressure switch DEM 301
DEM-301 dual pressure switch.
Used for automation of refrigeration machines.
DEM 301 sensor-relay is designed to control and regulate the pressure of gaseous and liquid media in stationary refrigeration installations. Has a low pressure sensor (DND) and a high pressure sensor (HPD). DEM 301 technical characteristics Setting limits, MPa: DND & mdash; -0.07 to +0.4; DVD & mdash; from 0.6 to 3 The scale of settings (settings) DND has numerical and pro - intermediate marks, DVD - mdash; has a fixed setpoint (setting). The setting to which the DVD is adjusted is printed on the device body. The scale of the adjustable DND return zone is informative and has marks of minimum and maximum values. Limits of settings (settings), MPa: DND from -0.07 to +0.4 DWD from 0.6 to 3.0 Return zone DEM-301, MPa: DND, adjustable 0.04 & mdash; 0.25 DVD, unregulated, no more than 0.35 The DND return zone is directed upward relative to the set point (setting) of the pressure of the controlled environment, DVD & mdash; downward. Climatic performance & mdash; TK, UZ in accordance with GOST 15150-69. Ambient temperature, ° C from & mdash; 40 to + 70 Switched current of DEM-301 at voltages up to 380 V AC with a frequency of 50, 60 Hz and cos & lt; p & gt; 0.6, A from 0.05 to 6 Switching power at voltage from -24 to -220 V, W 60 Degree of protection of the case & mdash; IP64. Weight, kg, about 1.2
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