DIFFERENTIAL PRESSURE GAUGE
with double bourdon tubes
MDB series
*Product Overview
Differential pressure gauge with double bourdon tubes are designed to measure difference between 2 pressures. General type can be used to measure non-corrode medium and the corrosion-proof type is suitable for corrode environments.
The instrument has 2 independent measuring systems. The measured pressure deflects the elastic elements, displacements then take place to actuate gear mechanisms
through linkages to carry 2 pointers travelling over instrument dial, and an auxiliary dial shows the pressure difference.
*SPECIFICATIONS
Dial diameter：4"(100mm)；6"(150mm)
Mounting：Bottom directly mounting (with front or back flange available)
Case：
General type－Black steel(enameled)
Corrosion-proof type－Stainless steel 304, IP55
Lens：3mm plain glass (Organic or double layers available)
Dial：Aluminum, black markings on white background
Measuring Principle：
General type－Two Bourdon tubes, copper alloy
Corrosion-proof type－Two Bourdon tubes, stainless steel 316
Movement：
General type－Copper alloy
Corrosion-proof type－Stainless steel
Welding：
General type－Tin-welding
Corrosion-proof type－AISI 316 TIG Argon arc
Pointer：Aluminum, black and red color (option：adjustable pointer)
Connection：
Male thread M20 x 1.5 (other sizes are available upon request)
General type－Copper alloy
Corrosion-proof type－Stainless steel 316
Accuracy：±1.5% F.S. available made-to-order
Temperature Limit：medium ≦+60℃(Corrosion-proof type：≦100℃)；ambient -20 to +60℃
Ranges：0.1；0.16；0.25；0.4；0.6；1；1.6；2.5；4；6 Mpa (other units available)
*OPERATING INSTRUCTION
The highest indicated value is the highest pressure permitted.
◆ We advice using the 1/2～1/3 of the range as △ P. it is convenient to see if it is too small. △ P is not lower than 1/10 of full scale value.
◆ The red pointer shows the plus pressure (the pressure input); the dial pointer shows the minus pressure (the pressure output).
◆ The value could be saw by the angle α between the red and dial pointers (see directly on the dial pointer).
And we can compute the difference using the pointed values of the red pointer and the dial pointer (△ P =P+ — P-).
◆ It is suitable to measure gas and liquid medium, suggested in room in -20℃～60℃.
◆ The general lowest range is 0.16MPa. it is could be made to 2.5% if 0.11MPa requested.
◆ While mounting, the end should be deployed with pressure input terminal and the end should be deployed.
