Issue 1
1-4 Instrument parts, accessories and options
K0457 - [EN] English
1.3 PV 622 models
1.3.1
Pressure relief valve (PRV)
To give your attached devices overpressure protection (device
under test, PM 620 module), we recommend you use one of
our range of optional pneumatic PRVs; see Section 1.5
(Accessories).
To attach or adjust a PRV, see Section 3.4.
Items 8, 10: Not applicable
Figure 1-2:
General views
1
2
3
4
5
7
6
9
11
12
13
1.
Optional accessory: Pressure connection for a
pressure relief valve (PRV); see Section 1.3.1. A
blanking plug is standard.
2.
Test port: Pressure connection (G1/8 or 1/8NPT) to
attach the device under test; see Section 1.3.2.
3.
Pressure and electrical connections for a PM 620
module.
Seal the pressure connection with a blanking plug
(P/N IO620-BLANK) or a PM 620 module that has the
correct pressure rating.
4.
Pneumatic pressure release valve to release pressure
in the system; see Section 1.3.3.
5.
Pneumatic refill valve. Close it to seal off all the
pressure and refill the pressure mechanism; see
Section 1.3.4.
6.
Moulded compartment for the DPI 620 calibrator with
electrical connections and a mechanism to hold it in
position.
7.
Push-button mechanism to release the DPI 620
calibrator.
9.
Volume adjuster wheel with fold-in handle; see
Section 1.3.5.
11.
Pressure/vacuum selector to set the pump operation:
pressure (+), vacuum (-); see Section 1.3.6.
12.
Pump mechanism; see Section 1.3.7.
13.
Carrying strap with a carry handle and a shoulder
strap.
2
