Digital Pressure Gauges
Intelligent digital Pressure Gauges have full electronic structure
and use battery-powered. The intelligent digital pressure gauges
have some benefits as follows: flexible use, simple operation, easy
debugging, safety, reliability and so on. So they have been widely
used in hydropower, water, so they are very easy for on-site
installation. Specifically, front-end high-precision piezoresistive
pressure sensor is used and the output signal is processed by the
high-precision, low temperature drift amplifier, then sent into the
high-precision A/D converter to be converted into digital signal,
after computing and processing the actual pressure value is showed
on the LCD display.
Advantages of Digital Pressure Test Gauge
Our calibrated digital hydraulic pressure gauges are miniature
smart product applied with international dinosaur measurements and
accurate temperature proof. The pressure value can be measured
continuously and realistically since our digital pressure gauge has
high accuracy. It is very suitable for on-site and laboratory use,
to complete precision pressure measurement, general pressure gauge,
precision pressure measurement, etc. The working table of the
pressure instrument can also be widely used in occasions requiring
precise pressure measurement. It is also a replacement of
traditional medical pressure gauges such as medical pressure
precision gauges and electric contact pressure gauges. What’s more,
our digital water pressure gauge with data logger will record peaks
automatically. It has high stability with good temperature
compensation and time drift. Our pressure gauge digital display is
internationally accepted with 11 kinds of pressure unit conversion,
such as MPa, kPa, Pa, mbar, bar, psi, mmH2O, mmHg, inH2O, inHg,
kgf/cm2. The power supply methods of our digital pressure test
gauge are also various whether you use a battery or a power
adapter.
Digital Hydraulic Pressure Gauge VS Digital Air Pressure Gauge
The digital Hydraulic Pressure Gauge and digital Air Pressure Gauge
generally can be used interchangeably (that is, the commonly used
hydraulic oil and air medium can be used interchangeably), as long
as the range and accuracy of the digital gauge are satisfied. But
if it is a corrosive medium, such as oxygen and hydrogen, the
digital pressure tester for ammonia gas cannot be interchanged with
the pressure gauge for hydraulic oil. Generally, the gas medium is
measured at a relatively low pressure, but there are also
high-pressure gases, especially military products. Gases of tens of
MPa can also be measured. The range of the pressure digital meter
cannot determine what medium is being measured.
Digital Pressure Test Gauge Working Principle
The digital pressure test gauge uses the analog-digital conversion
principle to convert the measured voltage into a digital quantity,
and the measurement result is displayed in digital. To be specific,
the digital pressure test gauge uses a pressure sensor to convert
the pressure into an electronic signal. The most commonly used
sensor is a piezoresistive pressure sensor which is equipped with a
diaphragm of many piezoresistive elements. When the medium of a
digital high pressure gauge is under pressure, it will cause a
change in the cross-sectional area of the piezoresistive element
because of the deflection of the diaphragm, then the coupled
resistor will detect the change. Generally there are 2 gauges of a
digital water pressure meter, one is to indicate the total pressure
(reading a little higher), the other is to indicate the chuck
pressure (reading a little lower), if there is a tail seat, then
one more pressure gauge. It’s very simple to distinguish, step on
the foot switch or press the switch on the panel to make the chuck
open, there should be a moving table pointer, this is the chuck
hydraulic meter; the one that doesn't move is the general pressure
gauge.
Specification
| Item | Spec. |
| Pressure range | -100kpa~250pa~5kpa~250Mpa |
| Accuracy | 0.5%, 0.4%, 0.2%, 0.1%, 0.05%, 0.02% |
| Display | 5-digit dynamic display + percentage indicator |
| Pressure unit | Pa, kPa, MPa, psi, bar, mbar, mmH2O, mmHg, inH2O, inHg, kgf/cm2 |
| Overload pressure | 150% FS |
| Destruction pressure | 200% FS |
| Power supply | 4.2V rechargeable lithium battery |
| Temperature | -20 ℃ ~ 60 ℃ |
| Humidity | ≤ 85% RH |
| Calibration environment | 20 ℃ ± 2 ℃ |
| Explosion-proof level | ExiaIICT4 optional |
| IP Grade | IP66 |
| Data record limit | 11000 |
| Process connection | M20 × 1.5 (male), special thread customizable |
| Dimensions | height 170mm, width 110mm, thickness 50mm |
