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2.
Release the pressure before removing the test and master gauges.
3.
Use safety goggles while using the hand pump .
1.
Introduction
1.1.
Specifications
1.2.
Guidelines for safe use
2.
Unpacking
3.
Technology of Hand Pump
3.1.
Calibration of Gauges
Introduction
1.1 The Model DPI-2200 is a Pneumatic Hand Pump capable of generating pressure upto 30 BAR and vacuum upto 0.9 BAR and used for the
calibration of gauges and switches.
Technical Specifications:
Model
Type
Range
Material
Pressure Ports
O-Rings
Fittings
Connection thread size
Weight
1.2 GUIDELINES FOR SAFE USE
Use the Hand Pump only for calibration.
Clean the gauge inlet thread and the inlet hole for any dirt or any oil before connecting with the pump. These can choke the pump.
Always wear protection gear while doing the calibration.
2 . UnPacking:
Visually check the exterior for any damage to the shipping carton box. Open the carton box and check the receipt of the following along with the
pump.
DPI-2200 Pneumatic Hand Pump
Spare fittings
Spare O-rings
Flexible hose
3. TECHNOLOGY USED IN HAND PUMP:
Principles Of Operation
The principle of operation is similar to a pump we use at home to fill air in the cycle tube. A piston moves back and forth in a cylinder and fills a
chamber with air. Two non return valves are fitted inside and both operate in opposite directions, which means at any point of time during
operation only on NRV is open. The piston is moved inward and outward movement by operation of the handle. A high tension spring placed over
the piston stem ensures the return of the piston to its home position. With each pumping the pressure of the air inside the closed chamber builds up.
The user can generate pressure by hand upto 20 BAR and the pressure further increased by the priming cylinder. As both test and master gauges
are fitted to the pump , both should show the same value. If the test gauge is showing differently, the gauge is adjusted to show correctly.
TABLE OF CONTENETS
: DPI-2200
: Caliper Type
: -0.9 ~ + 30 BAR
: Delrin
: SS 304
: Nitrile rubber
: SS 304
: ½" BSPF
: 250 gms approx
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