Industrial automation
Industrial Automation

363L monocrystal silicon flange-mounted type transmitter

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• Adopt MEMS monocrystal silicon high-precision pressure sensor • With high response speed and stability • Measurement accuracy 0.075%FS • The max. range ratio can reach to 50:1 • Adopt double overload protection technology
Product description

• Adopt MEMS monocrystal silicon high-precision pressure sensor
• With high response speed and stability
• Measurement accuracy 0.075%FS
• The max. range ratio can reach to 50:1
• Adopt double overload protection technology
• Provide standard HART bus communication mode
• Sophisticated self-diagnosis and telecommunication function
• Highlighted LCD with backlight
• Local display screen which can rotate by 360º
• Convenient local zero clearing function
• Convenient local zero point, extreme point setting and calibration function
• Convenient local current loop calibration function

 Performance index
The overal performance is the composition error based on the reference accuracy, ambient temperature effects

and range static-pressure effects.
Accuracy index
±0.075%FS range (conventional)

Concrete performance index

(Zero-base range, reference conditions, silicone oil filling liquid, 316 stainless steel isolation diaphragm, 4~20mA

analog output, the digital fine-tuning value is equal to the set point value of range.)

(The reference accuracy includes hysteresis, linear, setting ability and repeatability, which are based on terminal.) 
    If the range is less than X
    ±[0.025+0.05 ]%
       X value:

Damping time constant
The total damping time constant is equal to the sum of the damping time constants of amplifier unit and diaphragm capsule.

The damping time constant of amplifier unit is adjustable within the range of 0~100s.
Diaphragm capsule (silicone oil)      
Time constant (s) (The time constant can be set according to the actual situation of field and is recommended 1S)    

Influence of installation position
The changing of installation position, which is parallel to the surface of diaphragm, will not cause the effect of null shift. If the

change between the installation position and the surface of diaphragm do not exceed 90°, the null shift within 0.4KPa can be

corrected by zero setting without influencing the range.

Influence of power supply
Less than ±0.005% range/v

Functional parameter
The limit value of range and sensor

Table 1: Range of 363L transmitter and limit value of sensor

Zero point and range adjustment requirements
  ·The zero point and range can be adjusted arbitrarily within the range limit value indicated in Table 1.
·The range should be larger than or equal to the min. range indicated in Table 1.

Measurement of liquid, gas and steam

Two-wire 4-20mA, linear output or square root output is selectable for users. Digital process variable overlays on the

4-20mA signal, which can be applied to the host machines according with HART protocol.

Power supply
Need external power supply. While standard transmitter (4-20mA) has no load, work at 14.5-45V DC.
Loop load limit
The max. loop resistance is decided by the voltage of external power supply, the relations are as follows:

Note: The supply voltage range of transmitter with backlight display is 14.5~45V
     The supply voltage range of intrinsic-safety series transmitter is 14.5~28V.
    The working voltage while HART communication should be larger than 17.5V.

    For 363L type, the limit value is from 0psia to flange rated
value or the smaller one in the rated pressure values of sensor.

Table 2. Pressure rated value of 363L type flange

Fault mode
Output code
While discovering the faults of sensor or microprocessor by self diagnosis, the transmitter will output one high or low alarm

signal to prompt the users. The alarm output value is subject to the factory configuration mode of transmitter:
    Linear output: 3.8<I<20.8
C4: I=20.8mA  high fault
CN: I=3.8mA  low fault
Temperature limit
-20℃~+70℃ (Ordinary)
-40℃~+85℃ (The highest)
With header: -40℃~85℃   
Less than or equal to atmosphere, see the following table:

Table 3. Limit of 363L process temperature


Humidity limit
0-100% relative humidity
Starting time
Reach to the performance index within 2s after the transmitter is power up.

Mechanical performance index
Electrical interface
ANSI (American-Standrad) NPT1/2(F) internal thread
ISO (Chinese standard) M20×1.5 internal thread
Process interface
High-pressure side: flange size (execute national and chemical industry standard)
NP series: DN25 DN40 DN50 DN80 DN100
PN2.5 PN6 PN10 PN16 PN25 PN40
Class series: 1 inch, 1½ inches, 2inches, 3inches, 4 inches, 150lb、300lb
Low-pressure side: 1/4-18NPT taper pipe internal thread
T-shaped interface: M20×1.5 external thread and back welding connecting pipe    
Waist-shaped interface: 1/2-14NPT taper pipe internal thread, 1/2-14NPT pressure-leading transition head and back welding connecting pipe  
Process liquid-contacting piece
Process isolation diaphragm: 316L stainless steel, hastelloy C (Plug-in cartridge doesn’t have this option.), Ta (Plug-in cartridge doesn’t have this option.).
Drain/vent valve
316 stainless steel
Process flange and interface
316 stainless steel
363L type process liquid-contacting piece
Flange type process interface (the high-pressure side of transmitter)
Process diaphragm, including process gasket contacting surface
316L stainless steel, hastelloy C or Ta
Extension part
316 stainless steel
Mounting flange
Carbon steel galvanization or stainless steel
Process connection on the low-pressure side (the low-pressure side of transmitter)
Isolation diaphragm 
316L stainless steel
Flange and interface on the low-pressure side
316 stainless steel
Non-liquid-contacting piece 
Shell                                                 Coating
Aluminium die casting IP65            Spraying plastics                                  
Meter cap O-ring
Nitrile rubber

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