1.1 Introduction
1.2 PV 621 models
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1
2
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Figure 1-1: General views
[EN] English - K0457
This chapter gives a description of the different parts of each
instrument and the accessories/options available.
1. Optional accessory: Pressure connection for a
pressure relief valve (PRV); see Section 1.2.1. A
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blanking plug is standard.
2. Test port: Pressure connection (G1/8 or 1/8NPT) to
attach the device under test; see Section 1.2.2.
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 1.2.3.
6. Moulded compartment for the DPI 620 calibrator with
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electrical connections and a mechanism to hold it in
position.
7. Push-button mechanism to release the DPI 620
calibrator.
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8. Pneumatic volume adjuster; see Section 1.2.4.
11. Pressure/vacuum selector to set the pump operation:
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pressure (+), vacuum (-); see Section 1.2.5.
12. Pump mechanism; see Section 1.2.6.
13. Carrying strap with a carry handle and a shoulder
strap.
Items 5, 9, 10: Not applicable
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Chapter 1: Instrument parts,
accessories and options
Instrument parts, accessories and options 1-1