NIVELCO NIPRESS D-700 Series User manual

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Thank you for choosing NIVELCO instrument
We are sure that you will be satisfied throughout its use!
1. APPLICATION
NIPRESS D-700 series pressure transmitters measure pressure and convert it into voltage and current
output. They can be used in 2- and 3-wire systems. With a wide range of technical features, the transmitter
family is capable of measuring relative pressures in a variety of accuracy classes. The NIPRESS D-700
devices can only be used for static pressure. Their design, overload capability, applicability over a wide
temperature range and the ability to install in any position allow transmitters to be used in a wide variety of
industrial conditions.
2. TECHNICAL SPECIFICATION
TYPE DRF-7

-

Measurement range 0 – 20 bar according to the order code
Overload capability According to the order code
Accuracy ±0.5%; Pn 0.6 bar: ±0.25%; ±1% (with teflon coating)
Medium temperature(1) -40 °C … +125 °C (-40 °F … +257 °F)
Ambient temperature(1) -40 °C … +85 °C (-40 °F … +185 °F)
(with integral cable: -5 °C … +70 °C [+23 °F … +158 °F])
Sensor type Capacitive
Materials of the
wetted parts
Sensor(2)
A
luminium oxide ceramic (flush membrane)
Sensor sealing FKM, EPDM: -40 °C … +125 °C (-40 °F … +257 °F)
FFKM: -15 °C … +125 °C (+5 °F … + 257 °F)
Process
connection Stainless steel 1.4404 (316L); optional: PVDF
Housing Stainless steel 1.4404 (316L); optional: PVDF
Output 2-wire: 4 – 20 mA; 3-wire: 0 – 10 V
Power supply 2-wire, 4
–
20 mA output: USupply = 9
–
32 V DC;
3-wire, 0 – 10 V DC output: USupply = 12.5 – 32 V DC
Load resistance 2-wire, 4 – 20 mA current output: Rmax = [( USupply - 9 V ) / 0.02 A] 
3-wire, 0 – 10 V DC voltage output: Rmin > 10 k
Process connection(1) 1½" BSP
Electrical connection ISO 4400 / M12x1 (4 pin) / integral cable
Ingress protection IP65 (ISO 4400) / IP67 (M12x1) / IP68 (integral cable with capillary tube)
Electric protection Class III (SELV)
Mass ~ 0.2 kg
(1) Minimum temperature with PVDF process connection is -30 °C (-22 °F)
(2) Optional: Teflon coating (with 1% accuracy)
SPECIALDATA FOR Ex CERTIFIED MODELS (ONLY FOR 4–20 mA /2-WIRE)
TYPE DRF-7-6Ex 2.1 ACCESSORIES
User’s manual
Warranty Card
EU Declaration of Conformity
Ex marking (Pending)
Power supply USupply = 14 V
–
28 V DC
Intrinsically safe data Use only with Ex ia certified power supply!
Uimax = 28 V DC, Iimax = 93 mA, Pimax = 660 mW, Ci= 27 nF, Li 5 μH
Permissible temperatures for
environment
Zone 0: -20 °C …+60 °C, 0.8 bar patm 1.1 bar
Zone 1, 2: -25 °C …+70 °C
Connecting cable
(in case of a device equipped with
integral cable)
Cable capacitance: 100 pF/m,
Cable inductivity: 1 μH/m
2.2 ORDER CODE (NOT ALL COMBINATIONS POSSIBLE!)
NIPRESS D R F – 7 –
MEASURING
METHOD CODE
PROCESS
CONNECTION CODE RANGE
/
OVERLOAD CAPABILITY [bar] CODE ACCURACY CODE OUTPUT /EXCODE
Gauge R 1½" BSP(3) F 0 – 0.04 (2) O 0.25%(1) 1 4 – 20 mA, 2-wire 2
0 – 0.06 (2) P 0.5% 2 0 – 10 V, 3-wire 3
0 – 0.1 (4) 1 1%(2) 3 4 – 20 mA, 2-wire, / Ex ia 6
0 – 0.16 (4) R
0 – 0.25 (6) 2
0 – 0.4 (6) 3
0 – 0.6 (8) 4
0 – 1 (8) 5 (1) p  0.6 bar
0 – 1.6 (15) 6 (2) With Teflon coating
0 – 2.5 (25) 7 (3)Stainless steel or PVDF
0 – 4 (25) 8
0 – 6 (35) 9
0 – 10 (35) A
0 – 16 (45) B
0 – 20 (45) T
Dodávate:
MICROWELL spol. s r. o.,
SNP 2018/42, 927 00 Šaa
Tel.: [phone]
E-mail: [email protected]
http://www.microwell.sk

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2.3 DIMENSIONS
DRF-7

-

1½" BSP (DIN 3852)
stainless steel
1½" BSP (DIN 3852)
PVDF
3. SPECIAL CONDITIONS OF SAFE USE
Before turning on the device, make sure the installation is complete, and there
are no visible defects. The device may only be used within the limitations
specified in the technical specifications.
Protection against electrostatic charge:
The devices may partially contain static charging capable plastic components.
The presence of electrostatic charges may cause a risk of spark generation
and ignition and therefore electrostatic charges must be completely prevented:
-Use a shielded cable!
-Avoid friction on plastic surfaces!
-Do not clean the device dry! For example, use a wet duster!
Ex ia certified transmitters may only be operated in qualified, certified and
approved galvanically isolated intrinsically safe Ex ia circuits complying with the
technical data and the device’s explosion protection marking. The metal
housing of the device must be connected to the EP (equipotential) network!
4. INSTALLATION
Due to its small size and weight NIPRESS D-700 can be directly installed on
tanks, pipes, machines, etc. without mounting fittings.
In case of level measurement, the unit should be thread in a stub at the bottom
of the tank or the tank wall possibly near to the bottom.
To provide a chance for replacement of the instrument during operation the use
of closing armature is recommended. A simple ball valve will be suitable for
lower pressure, but for higher pressure (above 6 bar) a three-way blow-off
needle-valve is suggested. For medium with temperature over 75 °C (167 °F),
application of condensing device would protect the instrument against
overheating and extends its lifetime.
The temperature of the condensation in the condensing devices (in the water
lodge) is only 10 °C … 20 °C (18 °F … 36 °F) higher than the ambient
temperature.
Using a longer impulse tube, its proper sloping for the necessary de-aerating
and emptying has to be ensured.
Measuring low pressure values in systems with substantial height difference
between the transmitter and place of measurement the hydrostatic pressure of
the medium in the impulse pipe should be taken into consideration.
In the case of outside installation, the unit is supposed to be protected against
rain or splash water, because malfunction may occur if the connector’s screw is
not tightened properly (i.e. not appropriate sealing).
Installation position: any.
4.1 INSTALLATION INSTRUCTION
Depending on the measured medium, it may cause a hazard to the installer,
therefore the wear of suitable protective clothing, gloves, and goggles are
recommended.
Torque transmission is only allowed to be applied on the hexagonal screw on
the instrument body (torque wrench).
Be careful because the membrane is very vulnerable!
The cylindrical housing of the transmitter must not be gripped and
tightened with a pipe wrench!
The plug-in electric connector (ISO 4400) can be unplugged after releasing and
removing its fastening screw. The connection insert can be pushed out by a
screw driver from the direction of the screw.
Pushing the electric cable through the cable gland it can be connected to the
relevant points of the connector. Make sure that the cable gland and the
sealing plate of the connector are tightened properly!
Tighten the screw of the connector so that the sealing plate underneath seals
properly!
Install the device only in a pressure and current free state!
Choose an installation position to allow the splashed liquid to drain off from the
device!
Avoid the mechanical tensioning of the device during installation,
especially if the pressure connector is made of PVDF!
For the sake of noise suppression, the transmitter housing is grounded. If the
grounding of the process is correct no further grounding is needed, otherwise
the instrument should be grounded.
Installation steps:
The specified tightening torques must not be exceeded!
Tightening torques in case of stainless steel process connection:
1½" BSP: max. 25 Nm.
Mounting steps for BSP thread connections according to DIN 3852
Do not use any additional sealing material such as Teflon tape!
Check if the O-ring is undamaged, it has a flawless and clean surface and
seated in the designated groove.
Screw the device into the corresponding thread by hand, and tighten the parts
with a suitable torque wrench. If your device can be secured with a knurled
ring, the pressure transmitter should only be tightened by hand!
5. WIRING
Shielded and twisted multicore cable is recommended for the electrical
connection.
For devices with cable gland, make sure that the external diameter of the used
cable is within the allowed clamping range! Once connected the wires, tighten
the gland screw firmly until proper sealing!
For the installation of a device with an integral cable, the bending radiuses
have to comply with the following:
Cable without ventilation tube:
-static installation: 5-fold cable diameter
-dynamic application: 10-fold cable diameter
Cable with ventilation tube:
-static installation: 10-fold cable diameter
-dynamic application: 20-fold cable diameter.
2-WIRE CURRENT OUTPUT
3-WIRE VOLTAGE OUTPUT

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CONNECTION OF INTEGRAL CABLE
CONNECTION OF ISO 4400
12
3
+
–
+ Out
+
CONNECTION OF M12X1 / 4 pin
1:2:
3: Out
+
4:
5.1 EXAMPLES OF ARRANGEMENTS
WIRING OF 2-WIRE PRESSURE TRANSMITTERS
P
I
Current controlled
switch
PKK-312
~230V
Pressure transmitter
PLK-501
display
P
I
Panel instrument
PMM-300
PMM-500
~230V
Pressure transmitter
Power supply
PPK-331
P
I
Current loop indicator
PDF-401
~230V
Pressure transmitter
WIRING OF 3-WIRE PRESSURE TRANSMITTERS
Power supply
PPK-331
P
U
Panel instrument
PMG-411
+
Out
~230V
~230V
Pressure
transmitter
WIRING OF 2-WIRE Ex ia PRESSURE TRANSMITTERS
6. TROUBLESHOOTING
Fault Possible causes Fault detection / remedy
No output signal:
Connected incorrectly. Check the connections!
Conductor/wire breakage. Check all wires with cable tester!
Defective measuring
device (signal input).
Check the amperemeter (and its
fuse) and the analog input of the
signal processing unit!
Analog output signal
too low:
Load resistance too high. Check the value of the load
resistance!
Supply voltage too low.
Check the power supply and
power /current on the transducer /
transmitter!
Slight shift of the
output signal:
Diaphragm of the senor is
severely contaminated.
Clean with non-aggressive
cleaning solutions, soft brush or
sponge.
Diaphragm of the sensor is
calcified or crusted.
It is recommended to clean
carefully and remove dirt.
Large shift of the
output signal:
Diaphragm of the sensor is
damaged (caused by
overpressure or
mechanically).
Check the diaphragm of the
sensor, if it is damaged then send
the device back to the
manufacturer!
7. MAINTENANCE AND REPAIR
The instrument does not require regular maintenance. The repair will be carried
out at the NIVELCO' premises only. When dismantling the device, it must
always be done in a depressurized and currentless condition! Also, make sure
that the medium is drained off.
After the device has been properly shut down, if necessary, clean the
diaphragm carefully with a non-aggressive cleaning solution, soft brush or
sponge.
Wrong cleaning or improper touch may cause irreparable damage to the
diaphragm. Never use pointed objects or pressured air for cleaning the
diaphragm.
Devices for repair should be returned fully cleaned, and disinfected. In addition,
a form must be enclosed with the device, declaring that the device is free from
all contaminants and substances hazardous to health. The form (B 0407 / C –
Returned equipment handling form) can be downloaded from our website:
www.nivelco.com.
8. STORAGE CONDITIONS
Storage temperature(1): -40 °C … +100 °C (-40 °F ... +212 °F)
(1)Minimum temperature with PVDF process connection is -30 °C (-22 °F)
drf7612a0600h_04
November 2019
NIVELCO reserves the right to change technical data without notice.