Operating instructions

Page 21
ProMinent
®
WARNING
• Only EX pump: Please thoroughly read the chapter “Important Additions for Metering
Pumps in the EX Area” of the “General Operating Instructions ProMinent Motor Metering
Pumps and Hydraulic Accessories”!
IMPORTANT
• With the S3Ba, the customer should install a diaphragm rupture signal monitor with
electrical diaphragm sensors or ensure that the metering pump will stop after a
diaphragm rupture signal.
• In the event of diaphragm failure, a signal is triggered as from 2 bar system
backpressure.
• Exact pump delivery can no longer be guaranteed after failure of the working diaphragm.
Electrical data for the diaphragm breakage sensor
IMPORTANT
• Before commencing operation, install the provided diaphragm breakage sensor together
with the gasket (Item159) and make the electrical connections.
• For safety reasons it is advisable to connect a safe low voltage (e.g. EN 60335-1 (SELV)).
a) Switch contact
30 V DC/1 A or 125 V AC/0.6 A or 250 V AC/0.3 A
The diaphragm sensor is a N/C relay.
NOTE
• The cable priority is arbitrary.
b) Namur sensor, intrinsically
5-25 V DC, Namur type and/or DIN 60947-5-6, zero volt design.
Rated voltage: 8 V DC (R
i
~ 1 kΩ)
Power consumption:
Active surface, uncovered > 3 mA
Active surface, covered < 2 mA
Rated switching distance: 1.5 mm
The monitor/feeder must be capable of evaluating current changes in order to indicate
diaphragm rupture!
WARNING
• Only EX pump: Please thoroughly read the chapter “Important Additions for Metering
Pumps in the EX Area” of the “General Operating Instructions ProMinent Motor Metering
Pumps and Hydraulic Accessories”!
Product description S2Ba/S2Ca
Blue -
Brown +
BA_SI_036_06_10_EN.p65 08.06.2010, 11:38 Uhr21