Tecfluid VH35 AISI-316 - Manual (Page 3)

When using inductive loads, such as relays or electro-valve coils, surge arresters should be installed to
protect the reed contacts.
With a DC supply, a diode should be connected as shown.
For an AC supply, an RC circuit can be used as shown, although a varistor (VDR) is better and is easier to
select the right value. The VDR should have a breakdown voltage greater than 1.5 times the rms voltage.
The standard varistor ratings specify the rms working voltage for the varistor, for example a S05K25
varistor will be for 25 Vrms working and will have a breakdown voltage of 39 V at 1 mA.
The electrical installation should provide a fuse or circuit breaker to protect the reed switch from overloads.
When installing the connector, make sure that the cable gland closes over the cable and that the
connector is well screwed down to maintain the IP-65 rating.
CHARACTERISTICS
Contact Rating:
Maximum Switching Power : 3 Watts
Maximum Switching Voltage : 48 Vac, 70 Vdc
Maximum Switching Current : 0.25 A
Working Conditions:
Connector
: IP 65
Working Temperature : -40 ºC to +125 ºC
Working Pressure : 25 bar
MAINTENANCE
No special maintenance is required.
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