Advantages
􄤎Stainless steel flush diaphragm
􄤎All stainless steel 316 construction with
Piezoresistive sensing element
􄤎Measuring ranges from 0~0.1 to
0~35kgf/cm2
􄤎Shock and vibration resistant
􄤎300% overpressure protection
􄤎Excellent long term stability
􄤎Zero and span adjustments
Applications
The transmitters can be used for pressure
measurement in sticky, high viscous
liquids in mechanical and plant
engineering, as well as in process and
chemical engineering for the food and
pharmaceutical industry.
􄤎Mechanical and plant engineering
- Level measurement and storage tank
installation
- Concentration plant
􄤎Process and chemical engineering
- Breweries
- Dairies
- Fruit juice and beverage production
􄤎Water and waste water treatments
􄤎Pulp and paper stock measurements
􄤎Chemical and petrochemical industry
􄤎Equipment and machinery for paint,
ink, resin and dough process
􄤎Cosmetic and pulp industry

P520 series flush diaphragm pressure transmitters are
perfectly engineered for pressure measurement of slurry,
sludge, sticky and high viscous liquids in industrial
applications. They incorporate a fully temperature
compensated piezoresistive silicon sensor with great
accuracy, excellent long term stability, very low
temperature drift, and a strong, durable flush mounted
diaphragm. The transmitters are available as absolute
ａnd relative pressure types with either 2-wire current or
3-wire voltage output. The versatile process connections
include thread, flange and clamp mounting available by
customer requirement. The pressure to be measured
acts through thin corrosion resistant stainless steel 316L
diaphragm on a silicon measuring element. The pressure
transmitting medium is silicon oil. The measuring element
contains diffused piezoresistive resistors which are
connected into a Wheatstone bridge. The output signal of
this bridge is temperature compensated and converted
into a standardized current or voltage output signal.

Technology Piezoresistive silicon pressure sensor
Pressure ranges 0~0.1 to 35kgf/cm2 relative pressure
0~1 to 35kgf/cm2 absolute pressure
Pressure reference Gauge, absolute, vacuum and compound
Overload 3 ×full scale without damage
Current output Voltage output
Electrical connection type 2-wire technique 3 or 4-wire technique
Full scale output signal 20mA ±0.2% 5V ±0.2%
Zero measured output 4mA ±0.03% 1V ±0.03%
Other signals available on request
Excitation voltage 12~36V DC
Load resistance max@24V 500Ω at 24V
Influence of excitation 0.01% FSO/V
Power ripple ≤500mV P-P
Reverse polarity Protected
Shock resistance No change in performance after 10Gs for 11ms
Vibration 0.1G (1 m/s/s) maximum
Response time(10~90%) ≤2 milliseconds
Adjustment ±10% FSO/zero and span
Accuracy ≤±0.25% FSO
Non-linearity ±0.99% FSO typical
Repeatability ±0.015% FSO typical
Pressure hysteresis ±0.010% FSO typical
Long term stability ±0.3% FSO over 6 month
Cutoff frequency(-3 d B) ≤2kHz
Reference temperature 35°C
Operating temperature range -40~125°C
Compensated temperature range 0~82°C
Thermal sensitivity shift ≤±0.5%FSO in reference to 35°C typical
Thermal zero shift ≤±0.5% FSO in reference to 35°C typical
Thermal hysteresis ≤±0.1% FSO in reference to 35°C typical
Process connection PF3/4″male thread (standard)
1″thread, clamp and flange connections
Other connections available on request
Process media Gases and liquids compatible with stainless steel 316
Materials wetted by process Diaphragm : Stainless steel 316L
Housing : Stainless steel 316
Gasket O-ring : Viton (HNBR, CSM, etc.) or No O-ring
Enclosure rating IP65
Explosion protection Ex d IIC T6 ( P529 )
Influence of mounting position Not critical but 0.1 to 0.5bar should be mounted vertically
Weight Approx.(350g)
Options Clamp mounting for sanitary application
Sealed diaphragm with thread mounting
Sealed diaphragm with flange mounting
Sealed diaphragm with capillary
Note : ① Cable version : 1.5m standard length, 4-wire, shielded with integral vent tube
② Vented gauge units must breathe dry, non - corrosive gases.
③ Connector version is vented through the removed pin, cable versions are vented through a vent tube inside
the cable sleeve
Input
Output
Electrical Specifications
Performance Specifications
Physical Specifications