VRVP2001
Differential Pressure
LevelTransmitter
1 Application
The differential pressure level transmitter VRVP2001 issuitable to measure liquid, gas, or steam flow as well as liquid level, densityand pressure. VRVP2001 outputs a 4 to 20 mA DC signal corresponding to themeasured differential pressure. Its highly accurate and stable sensor can alsomeasure the static pressure which can be shown on the integral indicator orremotely 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
VRVP2001differential pressure level transmitter is composed of VRVP2001 seriesdifferential pressure transmitter and the welding installation level flange.The operation theory is the same as VRVP2001 series differential pressuretransmitter (look VRVP2001 series differential pressure transmitter generalspecifications), Only the high pressure side of pressure transmission path isdifferent. The pressure Loaded in the high side,pass from the isolation diaphragm and silicone oil in the flange to the sensor.
3 Input
Measured value: Differentialpressure, Level
Measuring range
Lower range value: -100% to +100% of the URL(continuouslyadjustable)
Upper range value: Up to100% of the URL(continuously adjustable)
Spans
Table 1:Span code, measuring range andSWP
Span code | Measuring range | SWP（Max） |
Min | Max |
B | 1kPa | 6kPa | The flange’s working pressure |
C | 4kPa | 40kPa |
D | 25kPa | 250kPa |
E | 200kPa | 2MPa |
Table 2: Flange and minimum measuringrange
Flange | Nominal diameter | The minimum measuring range |
Bulge sealing | DN 50/2” | 10kPa |
DN 80/3” | 1kPa |
DN 4” | 1kPa |
Flat sealing | DN 50/2” | 16kPa |
DN 80/2” | 1kPa |
DN 4” | 1kPa |
Theminimum measuring range of the differentialpressure Level transmitter should be the larger value of the minimum range oftable 1 and table 2.The adjusted span must not be lower than the minimum range.
4 Output
Output signal
Two wire 4 to 20 mA DC output with digitalcommunications, linear or square root programmable. HART FSK protocol are superimposed on the 4to 20 mA signal. Output range: 3.9 mA to 20.5 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.
6.2Ambient conditions
Ambienttemperature
Min：depends on the fill fluid
Max：85℃
-20～65℃,withLCD-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)
Look the EMC Performance Table 3
6.3Process conditions
Temperaturelimits:-30～180℃
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：DN50/2”about 7～10kg；DN80/3” about 8～11kg；DN4” about 9～12kg
6.4Supply & Load Requirements
24 V DC supply, R≤(Us-12V)/Imax kΩ, Imax=23 mA. Maximumvoltage limited: 42VDC, Minimum voltage limited: 12VDC, 15VDC（withLCD 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： 304stainless 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 and 1/4-18 NPTfemale thread on both sides. The level flange comply with the ANSI standard orDIN standards.
Table 3 : EMC Performance Table
Items | Test items | Basic standards | Test conditions | Performance Level |
1 | Radiated interference (Housing) | GB/T 9254-2008 | 30MHz～1000MHz | OK |
2 | Conducted interference（DC power port） | GB/T 9254-2008 | 0.15MHz～30MHz | OK |
3 | Electrostatic Discharge (ESD) Immunity | GB/T 17626.2-2006 | 4kV(Line) 8kV(Air) | B |
4 | RF electromagnetic field immunity | GB/T 17626.3-2006 | 10V/m (80MHz～1GHz) | A |
5 | Frequency magnetic field immunity | GB/T 17626.8-2006 | 30A/m | A |
6 | Electrical Fast Transient Burst Immunity | GB/T 17626.4-2008 | 2kV(5/50ns,5kHz) | B |
7 | Surge Immunity | GB/T 17626.5-2008 | 1kV（line to line） 2kV（line to ground）(1.2us/50us) | B |
8 | Conducted interference immunity induced by RF field | GB/T 17626.6-2008 | 3V (150KHz～80MHz) | A |
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.
DIMENSIONS Unit : mm
Table 4: Level flange dimensions
Nominal diameter | Working pressure | ΦD | ΦK | Φd1 | Φd2 | Φd3 | t | b | Bolt |
Bulge seal | Flat seal |
DN 50 | PN1.6/4MPa | 165 | 125 | 48.3 | 57 | 102 | 3+0.5 | 20 | 4 | M16 |
(SealingDIN 2526E) | PN 6.4MPa | 18 | 135 | 48.3 | 57 | 102 | 3+0.5 | 26 | 4 | M20 |
（Flange DIN 2501) | PN 10MPa | 195 | 145 | 48.3 | 57 | 102 | 3+0.5 | 28 | 4 | M20 |
DN 80 | PN1.6/4MPa | 200 | 160 | 76 | 75 | 138 | 3+0.5 | 24 | 8 | M16 |
(Sealing DIN 2526E) | PN 6.4MPa | 215 | 170 | 76 | 75 | 138 | 3+0.5 | 28 | 8 | M20 |
（Flange DIN 2501) | PN 10MPa | 230 | 180 | 76 | 75 | 138 | 3+0.5 | 32 | 8 | M24 |
DN 2"
（ANSI B 16.5 RF） | 150psi | 152.4 | 120.6 | 48.3 | 57 | 92.1 | 3+0.5 | 17.4 | 4 | M18 |
300psi | 165.1 | 127.0 | 48.3 | 57 | 92.1 | 3+0.5 | 20.6 | 8 | M18 |
600psi | 165.1 | 127.0 | 48.3 | 57 | 92.1 | 6.35 | 31.75 | 8 | M18 |
DN 3"
（ANSI B 16.5 RF） | 150psi | 190.5 | 152.4 | 76 | 75 | 127 | 3+0.5 | 22.2 | 4 | M16 |
300psi | 209.5 | 168.3 | 76 | 75 | 127 | 3+0.5 | 27.0 | 8 | M20 |
600psi | 209.5 | 168.3 | 76 | 75 | 127 | 6.35 | 38.05 | 8 | M20 |
DN 4“ | 150psi | 229 | 191 | 89 | 89 | 157 | 3+0.5 | 30 | 8 | M18 |
（ANSI B 16.5 RF） | 300psi | 255 | 200 | 89 | 89 | 157 | 3+0.5 | 32 | 8 | M18 |
7 Terminal Configuration
Note：Quick interface functionally equivalentto the signal terminal
8 ProcessConnections Description
9 Model and suffix codes[1]
Level flange sealing device selection of the differential pressure Level transmitter VRVP2001 |
10 | Flange sealing device |
LT- | Level flange sealing, no capillary ,⊕ Side |
20 | Process connection, Flange and diaphragm material |
A | DN50 DIN 2501 E DN2526 316L stainless steel |
B | DN50 DIN 2501 E DN2526 Hastelloy C |
C | DN50 DIN 2501 E DN2526 Tantalum |
H | DN80 DIN 2501 E DN2526 316L stainless steel |
I | DN80 DIN 2501 E DN2526 Hastelloy C |
G | DN80 DIN 2501 E DN2526 Tantalum |
D | DN2″ANSI B 16.5 RF ANSI B 16.5 316L stainless steel |
E | DN2″ANSI B 16.5 RF ANSI B 16.5 Hastelloy C |
F | DN2″ANSI B 16.5 RF ANSI B 16.5 Tantalum |
K | DN3″ANSI B 16.5 RF ANSI B 16.5 316L stainless steel |
L | DN3″ANSI B 16.5 RF ANSI B 16.5 Hastelloy C |
M | DN3″ANSI B 16.5 RF ANSI B 16.5 Tantalum |
N | DN4″ANSI B 16.5 RF ANSI B 16.5 316L stainless steel |
O | DN4″ANSI B 16.5 RF ANSI B 16.5 Hastelloy C |
P | DN4″ANSI B 16.5 RF ANSI B 16.5 Tantalum |
30 | Working pressure |
1 | PN 1MPa/4MPa DIN 2501 |
2 | PN 6.4MPa DIN 2501 |
3 | PN 10MPa DIN 2501 |
6 | 150psi ANSI B 16.5 |
7 | 300psi ANSI B 16.5 |
8 | 600psi ANSI B 16.5(not including DN4″ANSI B 16.5） |
40 | Flange sealing type |
F | Flat sealing | | | | |
H | Bulge sealing，316L stainless steel,extended diaphragm seal 50mm | |
I | Bulge sealing，316L stainless steel,extended diaphragm seal 100mm | |
G | Bulge sealing，316L stainless steel,extended diaphragm seal 150mm | |
L | Bulge sealing，Hastelloy C, extended diaphragm seal 50mm | |
M | Bulge sealing，Hastelloy C, extended diaphragm seal 100mm | |
N | Bulge sealing，Hastelloy C, extended diaphragm seal 150mm |
50 | Fill fluid |
S | Silicone oil -30～200℃ |
V | Vegetable oil 0～250℃ |
60 | Diaphragm Protection |
| | | | | | N | None |
1 | EFP plated on 316L, ≤180℃ |
2 | PFA plated on 316L, ≤260℃ |
3 | PTFE coated on 316L[2], ≤200℃ |
Note 1：Before levelflange sealing device selection, the selection of the VRVP2001differential pressure transmitter should be completed, andselected L option in line 60 of the in VRVP2001 options table；
Note 2：The PTFE membrane(F4 membrane) posted on the diaphragm, it could be applied to the measurement of negativepressure,but it applies only to the flat level flange.
Order example：
For example：VRVP2001-AC2A1LNN111N1C[3], LT-H1FSN
[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
[LT-]: Level flange sealing, no capillary ,⊕ Side
[H]：DN80 DIN 2501,E DN2526, 316Lstainless steel
[1]：Working pressure PN 1MPa/4MPa DIN 2501
[F]：Flange sealing type is flat sealing
[S]：Fill fluid is silicone oil
[N]：Wetted flange diaphragm surface withoutspecial treatment
Note3：Differential pressure transmitter optionssee the VRVP2001 Series transmitter General Specifications；
Note4：The minimum measuring range of the differential pressureLevel transmitter should be the larger value of the minimum range of table 1and table 2. The adjusted span must not be lower than the minimum range.
Note5：When measuring pressure or static pressure <50kPa(absolute pressure), it requires special handling during the manufacturingprocess to ensure that performance.