(1) Product Overview
The SZ903 series pressure transmitter is a product designed for differential pressure, gauge pressure, and absolute pressure measurement applications. The SZ903 series pressure transmitter adopts superior sensors, combined with high-precision electronic components, assembled through strict process, fully utilizing the technical advantages of the sensors, making the SZ903 series pressure transmitter have excellent performance. It has strong overload and impact resistance, low temperature drift, high stability, and high measurement accuracy.
The SZ903 series pressure transmitter has multiple models, ranges, process connection forms, and materials. It can be widely used in many industrial fields such as petroleum, chemical, power, metallurgy, pharmaceuticals, food, etc. It can adapt to various industrial occasions and media, and is an ideal pressure measuring instrument in the field of industrial automation.
(2) Product Features
vRS485（modbus）Communication and (4-20) mAHART, FF, PROFIBUS-DP/PA industrial bus, etcFree choice;
vdirect insertionSplit type, flange, etc., with flexible and diverse installation methods;
vSignal isolation technology, electromagnetic and electrical frequency anti-interference technology;
vZero point self stabilization technology and temperature automatic compensation technology have a transferable range, and it is recommended not to exceed 3:1;
vHigh precision, good stability, small size, light weight, sturdy and anti vibration;
vThe entire series has a unified structure, with strong interchangeability of components and a choice of membrane materials that come into contact with the medium;
vTemperature automatic compensation technology reduces errors in harsh environments;
vExplosion proof structure, all-weather use；
(3) Product certification
Explosion proof: intrinsic safety, explosion-proof;
Anti interference: CE;
product photos
Main parameters of the product
lRange: Customizable
lWorking voltage: 24VDC;
lOutput signal: RS485（modbus）Communication and (4-20) mAHART, FF, PROFIBUS-DP/PA industrial bus, etcfree choice；
lAccuracy: 0.025FS%、0.1FS%、0.2FS%、0.5FS%；
lTemperature drift: ± 0.15% FS/10 ° C;
lStability: better than 0.1% FS/year;
lLocation impact: The installation location does not affect the zero point;
lExplosion proof type: explosion-proof or intrinsic safety
lWorking temperature: -40~70 ℃;
lProcess measurement temperature: -105 ℃~550 ℃;
lProtection level: up to IP68;
lExplosion proof: intrinsic safety, explosion-proof, gas maximum zone 0, dust maximum zone 20.
lInstrument self diagnostic function: Intelligent instruments have high and low limit alarms, self detection, and alarm for pressure drift exceeding limits and hardware failures;
lWiring out method: It can be led out from any outlet as needed. It is recommended to use￠10 industrial cables are used as leads for sealing purposes, and universal cable connectors PG16 or M20X1.5 can be selected for lead out joints. The non lead end is sealed with an end cap.
Model Series |
Type of transmitter |
remark |
SZ903 |
Differential pressure and gauge pressure transmitters |
|
precision range |
code |
meaning |
|
1 |
0.1level |
|
2 |
0.2level |
|
5 |
0.5level |
|
Shell material |
code |
meaning |
|
K |
Cast aluminum casing |
|
K1 |
aluminum alloy casing |
|
B |
stainless steel316L |
|
Explosion-proof type |
code |
meaning |
|
D |
flameproof type |
|
I |
Intrinsically safe |
|
S |
Non explosion proof type |
|
display type |
code |
meaning |
|
D |
LCDLCD screen display |
|
S |
No display |
|
Output signal type |
code |
meaning |
|
A |
4~20mA |
|
H |
4~20mA，HART |
|
R |
RS485，Modbus RTUagreement |
|
F |
FFbus |
|
P |
PROFIBUS-DP/PA |
|
Z |
ZIGBEEAgreement (Sinopec Sihua Agreement) |
|
L |
LTE(4G) |
|
N |
NB-IOTagreement |
|
Measurement type |
code |
meaning |
|
C1 |
Differential pressure transmitter |
|
C2 |
Single flange differential pressure transmitter |
|
C3 |
Double flange differential pressure transmitter |
|
B1 |
Direct insertion gauge pressure transmitter |
|
B2 |
Flange type gauge pressure transmitter |
|
B3 |
Side mounted differential pressure structure pressure transmitter |
|
J1 |
Direct insertion absolute pressure transmitter |
|
J2 |
Flange type absolute pressure transmitter |
|
J3 |
Side mounted absolute pressure transmitter |
|
range |
code |
gauge pressure |
differential pressure |
absolute pressure |
|
7 |
0~500/1000KPa |
0~1KPa |
0~100KPa |
|
8 |
0~1.0/2.0MPa |
0~5KPa |
0~400KPa |
|
9 |
0~2.0/3.5MPa |
0~50Kpa |
0~1000KPa |
|
A |
0~3.5/7.0MPa |
0~100KPa |
0~1.6MPa |
|
B |
0~7.0/10Mpa |
0~500KPa |
0~3.0Mpa |
|
C |
0~10/20MPa |
0~1MPa |
0~6.0MPa |
|
D |
0~20/35MPa |
0~3.5MPa |
0~10MPa |
|
E |
0~35/60MPa |
0~10MPa |
0~15Mpa |
|
X |
Customized range |
Customized range |
Customized range |
|
Static pressure (effective differential pressure) |
code |
meaning |
|
0 |
meaningless |
|
1 |
3MPa |
|
2 |
16MPa |
|
3 |
30MPa |
|
4 |
40MPa |
customization required |
Diaphragm material |
code |
meaning |
|
2 |
316Lstainless steel |
|
3 |
HastelloyC-276 |
|
4 |
Monel |
|
5 |
Gold plated stainless steel |
|
6 |
Tantalum |
|
7 |
Titanium |
|
8 |
zirconium |
|
emission/Exhaust valve material |
code |
meaning |
|
0 |
meaningless |
|
1 |
stainless steel316L |
|
2 |
HastelloyC-276 |
|
Process connectors |
code |
|
size |
Flange material |
|
000 |
No flange |
|
A01 |
Vertical installation flange |
1.5" 150LB |
316L |
|
A02 |
2" 150LB |
|
A03 |
3" 150LB |
|
A04 |
4" 150LB |
|
A05 |
1.5" 300LB |
|
A06 |
2" 300LB |
|
A07 |
3" 300LB |
|
A08 |
4" 300LB |
|
A09 |
1.5" 600LB |
|
A10 |
2" 600LB |
|
A11 |
3" 600LB |
|
A12 |
4" 600LB |
|
A13 |
1.5" 900LB |
|
A14 |
2" 900LB |
|
A15 |
3" 900LB |
|
A16 |
4" 900LB |
|
C01 |
1.5" 150LB |
HaC |
|
C02 |
2" 150LB |
|
C03 |
3" 150LB |
|
C04 |
4" 150LB |
|
C05 |
1.5" 300LB |
|
C06 |
2" 300LB |
|
C07 |
3" 300LB |
|
C08 |
4" 300LB |
|
C09 |
1.5" 600LB |
|
C10 |
2" 600LB |
|
C11 |
3" 600LB |
|
C12 |
4" 600LB |
|
C13 |
1.5" 900LB |
|
C14 |
2" 900LB |
|
C15 |
3" 900LB |
|
C16 |
4" 900LB |
|
T01 |
1.5" 150LB |
Tantalum |
|
T02 |
2" 150LB |
|
T03 |
3" 150LB |
|
T04 |
4" 150LB |
|
T05 |
1.5" 300LB |
|
T06 |
2" 300LB |
|
T07 |
3" 300LB |
|
T08 |
4" 300LB |
|
T09 |
1.5" 600LB |
|
T10 |
2" 600LB |
|
T11 |
3" 600LB |
|
T12 |
4" 600LB |
|
T13 |
1.5" 900LB |
|
T14 |
2" 900LB |
|
T15 |
3" 900LB |
|
T16 |
4" 900LB |
|
Depth of flange extension |
code |
meaning |
|
0 |
meaningless |
|
1 |
insert50mm(deep insertion) |
|
2 |
insert100mm(deep insertion) |
|
3 |
insert150mm(deep insertion) |
|
4 |
insert200mm(deep insertion) |
|
9 |
customizable |
|
mounting bracket |
code |
meaning |
|
00 |
meaningless |
|
Z1 |
stainless steel304support |
|
Z2 |
stainless steel204Right angle bracket |
|
Z3 |
stainless steel316Lsupport |
|
Z4 |
304Stainless steel installation bracket, including300stainless steel bolt |
|
Z5 |
2Installation of flat brackets for inch pipelines, with carbon steel bolts |
|
alarm function |
code |
meaning |
|
00 |
meaningless |
|
H1 |
High alarm, alarm limit can be set |
|
H2 |
Low alarm, alarm limit can be set |
|
H3 |
High and low alarm, alarm limit can be set |
|
Hardware adjustment |
code |
meaning |
|
0 |
meaningless |
|
1 |
Zero point and range adjustable |
|
flange adapter |
code |
meaning |
|
0 |
No flange |
|
1 |
1/2 -14 NPT(F) |
|
2 |
RC1/2Stainless steel flange adapter |
|
Diaphragm filling fluid |
code |
meaning |
|
0 |
meaningless |
|
A |
silicone oil200 |
|
B |
Inert liquid (halogenated hydrocarbon))Or fluorine oil(CTFE) |
|
C |
Low temperature oil (lower limit of temperature resistance)-75°C） |
|
D |
High temperature type (silicone oil, upper temperature resistance limit)300°C） |
|
Material of bolts and nuts |
code |
meaning |
|
00 |
meaningless |
|
L1 |
austenite316stainless steel bolt |
|
L2 |
austenite316stainless steel nut |
|
M1 |
合金K-500bolt |
|
M2 |
合金K-500nut |
|
Special cleaning |
code |
meaning |
|
0 |
meaningless |
|
1 |
Below1 PPMChlorine/Fluoride cleaning |
|
2 |
Cleaning for special application scenarios |
|
Instant protection |
code |
meaning |
|
0 |
none |
|
1 |
Built in lightning protection module |
|
Safety Certification |
code |
meaning |
|
0 |
unverified |
|
E |
Dust explosion prevention |
|
S |
SIL2Safety Certification |
|
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