Technical Data
Cycling Timer PRS-7b
Interval time T (blowdown interval)
Adjustable in steps of 0.5 h within a range of 0.5 h…31.5 h
Pulse duration t (blowdown duration)
Adjustable in steps of 1 s within a range of 1 s…63 s
Output
1 potential-free relay contact:
max. contact rating: 250 V, 500 W, 3 A ohmic with a life of 4 x 105 switching cycles or 0.35 A inductive with a life of 2 x 106 cycles; contact material silver, hard-gold plated
Indicators
1 LED ashing at one-second intervals
START/TEST push button as manual override, to initiate a single pulse and to set the timer to zero
Mains supply
220 V, 50…100 Hz, 3.5 VA (other voltages on request)
Protection
IP 40
IP 65 (PRS-7b in sheet-steel case)
Permissible ambient temperature
0…55 °C
0…70 °C (PRS-7b in sheet-steel case)
Sheet-steel case
grey hammertone nish, 2 cable glands Pg 11
Approx. weight
sheet-steel case included 1.4 kg
Three-Way Solenoid ValveConnection
1⁄4″, BSP (DIN 259)
Max. service pressure
16 barg (230 psig)
Min. differential pressure required for opening and closing
0.5 bar (7.2 psi)
Duty cycle
100 %
Position of installation
as required, code letters for connections: P = Pressure connection
A = Valve outlet
R = Exhaust or drain outlet
Mains supply
220 V, 50 Hz, 15 VA, inrush 30 VA
(other voltages and frequencies on request)
Protection
IP 65
Permissible ambient temperature
55 °C
Approx. weight
0.9 kg
