Deskripsi
Programme-Controlled Blowdown System TA 7
Description Blowdown Valve TA7 Gestra
Electronic unit for the generation of periodic pulses to
initiate a blowdown cycle via the GESTRA rapid-action
intermittent blowdown valve type MPA 46 or 47, i.e.
automation of intermittent boiler blowdown. Equipment for
steam boilers to TRD 401, section 6.4.
The programme-controlled blowdown system consists of
an electronic cycling timer, a three-way solenoid valve and
a strainer.
The equipment meets the German regulations for use in
steam-boiler plants operating without constant supervision
or with limited supervision (TRD 602 and TRD 604, sheet 1).
Function Blowdown Valve TA7 Gestra
The cycling timer type PRS 8 generates a control pulse which,
after the preset blowdown interval, operates the three-way
solenoid valve. This in turn actuates the rapid-action blowdown
valve by means of compressed air or pressurized
water and closes it again at the end of the pulse (blowdown)
duration.
The blowdown interval and the pulse duration can be coarsely
preset with a code switch. Final adjustment is carried out with
the aid of two potentiometers.
For test purposes and in the event of power failure the
three-way solenoid valve can be operated by hand.
A push-button manual override is provided on the solenoid
valve which allows a test of the blowdown valve as
required by certain regulations in force.
Design
The cycling timer PRS 8 is mounted in an appliance plug
socket fitted on the three-way solenoid valve.
Technical Data
Cycling Timer PRS 8
Interval time toff (blowdown interval)
Adjustable within a range of 0.5 h to 10 h
Pulse duration ton (blowdown duration)
Adjustable within a range of 0.5 s to 10 s
Indicators
One LED mains supply
One LED pulse duration
Supply voltage
115 V – 230 V, 50 – 60 Hz
Blowdown Valve MPA46(DN50 PN40) Gestra
https://flowmeterjakarta.com/product/jual-water-meter-itron-woltmag-dn-50-100/
Reviews
There are no reviews yet.