VRVP2001  Remote Seal Differential

   Pressure Transmitter

1  Application

The remote seal differential pressure transmitter VRVP2001is suitable to measure liquid, gas, or steam flow as well as liquid level,density and pressure. VRVP2001 outputs a 4 to 20 mA DC signal corresponding tothe measured differential pressure. Its highly accurate and stable sensor canalso measure the static pressure which can be shown on the integral indicatoror remotely monitored via  HARTcommunications. Other key features include quick response, remote set-up usingcommunications, self-diagnostics and optional status output for pressurehigh/low alarm. The range Limits is 0—1kPa～2MPa, Theflange’s working pressure are 1.6/4MPa,6.4MPa,10MPa,150psi,300psi or 600psi.

2Operation Theory and Structure

VRVP2001remote seal differential pressure transmitter is composed of VRVP2001 seriesdifferential pressure transmitter and the welding installation remote seal  flange. The operation theory is the same asVRVP2001 series differential pressure transmitter (see VRVP2001 seriesdifferential pressure transmitter general specifications), Only the pressuretransmission path is different. The pressure loaded in the high or low  side,pass from the isolation diaphragm and silicone oil in the flange to the sensor.

3 Input

Measured value: Differentialpressure, Level

Measuring range

Lower rangevalue: -100% to +100% of the URL(continuously adjustable)

Upper range value: Up to100% of the URL(continuously adjustable)

Spans

Table1: Span code, measuring range andSWP

Table 2: Flange and minimum measuringrange  

The minimum measuring range of theremote seal differential pressure transmitter should be the larger value of theminimum range of table 1 and table 2.The adjusted span must not be lower thanthe minimum range.

4 Output

Output signal

Two wire 4 to 20 mA DC output with digital communications,linear or square root programmable.  HARTFSK protocol are superimposed on the 4 to 20 mA signal. Output range: 3.9 mA to20.5 mA.

Failure Alarm (the mode can be selected)

Low Mode (min): 3.7 mA, High Mode (max): 21 mA

No Mode (hold): Keep the effective value before thefault. Note: The standard setting of failure alarm is HighMode.

5Response Time

Theamplifier damping constant is 0.1 sec; The sensor and flange’s damping constantis 0.2~3 sec, it depends on the range and range compression ratio. Amplifierdamping time constant is adjustable from 0.1 to 60 sec by software and added toresponse time.

6 Generalconditions

6.1Installation conditions

The transmitter can be directly flanged in any position.Preferably in such a position that the process flange axes are vertical.Deviations from this can cause a shift in the zero, which can be corrected. Theelectronic housing can be rotated through 360 and can be fixed in any position.A stop prevents the housing being turned too far. The minimum bend radius ofthe capillary of 75mm, is strictly prohibited winding!

6.2Ambient conditions

Ambienttemperature

Min：depends on the fill fluid

Max：85℃

-20～65℃,with LCD-indicator

Storagetemperature/transport temperature

Min：depends on the fill fluid

Max：85℃

Humidity:0～100%

Shockresistant: Acceleration：50g,Duration：11ms

Vibrationresistance: 2g up to 500Hz

Electromagnetic Compatibility (EMC)

See the EMC Performance Table 4

6.3Process conditions

Temperaturelimits:-30～400℃

Table 3: Fillfluid, temperature limits and the working pressure range

Note：Beyond the above working temperature and workingpressure range should be pointed out, a specially designed can be met therequirements.

Pressurelimits: From 3.5kPa abs. to working pressure. Proofpressure up to 1.5-times the nominal pressure simultaneously on bothsides of the transmitter admissible.

Flangeworking pressure

ANSI：150psi～600psi

DIN：  PN 1.6MPa～PN 10MPa

One-sidedoverload: One-sided overload up to the rated pressure.Possibly occurring zero offsets can be corrected.

Weight

One flange remote seal:DN 50/2”about 7～10kg；DN80/3” about 8～11kg；DN4” about 9～12kg;

Two flange remote seal:DN 50/2”about 10～16.5kg；DN80/3” about 12～18kg；DN4” about 14～21kg.

6.4Supply & Load Requirements

24 V DC supply, R≤(Us-12V)/Imax kΩ,

Imax=23 mA.

Maximum voltage limited: 42VDC,

Minimum voltage limited: 12VDC,

15VDC（with LCD display）

230Ω to 600Ω for digital communication

Wetted Parts Materials

Flange：             316stainless steel

IsolatingDiaphragm：316Lstainless steel / Hastelloy C/EFP or PFA plated on 316L/Tantalum

Nuts and Bolts：     304 stainless steel

Process Connector： 316 stainless steel

Fill fluid：            Silicone oil/ Vegetable oil

ProcessConnector Gasket：Perbunan（NBR）/Viton（FKM）/Teflon(PTFE)

Amplifier Housing：  Aluminum with epoxy resin coat

Housing Gasket：  Perbunan（NBR）

Name plate and tag：304 stainless steel

Degrees of Protection: IP67

Electrical Connection

The electrical connection is made via cable entryM20x1.5.The screw terminals are suitable for wire cross-sections up to 2.5mm².

Process Connection

Flange with fixing thread 7/16-20 UNF .The flange complywith the ANSI standard or DIN standards.

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Table 4 : EMC Performance Table

Note：（1）Performancelevel A description: The technical specifications within the limits of normalperformance.

      （2）Performancelevel B description: Temporary reduction or loss of functionality orperformance, it can restore itself. The actual operating conditions, storage,and data will not be changed.

7 DIMENSIONS                                                                 Unit: mm

Figure 1Two side flange remote seal device

Figure 2 One side flange remote seal device

Note:（1）The one side flange can beinstalled in the high or low pressure side of the transmitter ;

（2）The one or two side flangeremote seal transmitter’s installation is the same way as the VRVP2001 series

differential pressure transmitter

Table 5: Remote seal flange dimensions

Figure3  Two side flange remote seal ofthreaded mount device

Figure4  One side flange remote seal ofthreaded mount device

Note:（1）The one side flange can beinstalled in the high or low pressure side of the transmitter ;

（2）The one or two side flangeremote seal transmitter’s installation is the same way as the VRVP2001 series

differential pressure transmitter.

8Terminal Configuration

Note：Quick interface functionally equivalentto the signal terminal

9 ProcessConnections Description of the no flange side

10 Modeland suffix codes^[1]

Note 1: Before flange sealing device selection, the selection of the VRVP2001 differential pressure transmitter should becompleted, and selected R option in line 60 of the in VRVP2001 options table；

Note 2: The PTFE membrane(F4membrane) posted on the diaphragm, it could be applied to the measurement of negativepressure>50kPa, but it applies only to the flat level flange.

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Order example：

For example: VRVP2001-AC2A1LNN111N1C^[3],

RH-H1FS4PN,

RL-H1FS4PN.

[A]：Reference Accuracy:±0.05%

[C]：Span:0-400Pa～40kPa（0-40～4000mmH2O）

[2]：Static pressure sensor:10MPa

[A]：316L stainless steel diaphragm,Silicone oil fill fluid

[1]：Working pressure:16MPa

[L]：Level

[N]：Perbunan（NBR）processconnector gasket

[N]：None

[1]：With 304 stainless steel mountingbracket

[1]：With stainless steel oval-shaped flangewith 1/2 NPT female thread

[1]：With LCD display

[N]：None of explosion protected type

[1]：Position number marked on the nameplate

[C]：Chinese manual

[RH-]：Flange sealing device of high side

[H]: DN80（DIN 2501）,E DN2526, 316L stainless steel

 diaphragm

[1]: Working pressure PN1MPa/4MPa（DIN 2501）

[F]: Flange sealing type is flat sealing

[S]：[S]: Fill fluid is silicone oil

[4]: Capillary’slength is 4m

[P]: With PVC protective coating capillary

[N]: Diaphragm surface without specialtreatment

[RL-]：Flangesealing device of low side

[H]: DN80（DIN 2501）,E DN2526, 316L stainless steeldiaphragm

[1]:Working pressure PN 1MPa/4MPa（DIN 2501）

[F]: Flange sealing type is flat sealing

[S]:Fillfluid is silicone oil

[4]: Capillary’slength is 4m

[P]: With PVC protective coating capillary

[N]:Diaphragm surface without specialtreatment

Note 3：Differentialpressure transmitter options see the RP2001 Series transmitter general specifications;

Note 4：The minimummeasuring range of the remote seal differential pressure transmitter should bethe larger value of the minimum range of table 1 and table 2. The adjusted spanmust not be lower than the minimum range.

Note5：When measuring pressure or static pressure<50kPa (absolute pressure), it requires special handling during themanufacturing process to ensure that performance.

Note 6: Before flange sealing device selection, the selection of the VRVP2001 differential pressure transmitter should becompleted, and selected S option in line 60 of the in VRVP2001 options table；

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