NIVELCO NIPRESS DD-400 Manuel utilisateur

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TABLE OF CONTENTS

1. INTRODUCTION..............................................................................................................................................................................................4

2. ORDER CODE (NOT ALL COMBINATIONS POSSIBLE!) ............................................................................................................................4

3. TECHNICAL SPECIFICATION........................................................................................................................................................................5

3.1 DIMENSIONS ..........................................................................................................................................................................................6

3.2 ACCESSORIES.......................................................................................................................................................................................6

3.3 SPECIAL CONDITIONS OF SAFE USE..................................................................................................................................................6

4. INSTALLATION...............................................................................................................................................................................................7

4.1 INSTALLATION INSTRUCTION .............................................................................................................................................................7

5. WIRING............................................................................................................................................................................................................8

5.1 EXAMPLES OF ARRANGEMENTS........................................................................................................................................................8

6. PROGRAMMING.............................................................................................................................................................................................9

6.1 CONFIGURATION...................................................................................................................................................................................9

6.2 PASSWORD SYSTEM ............................................................................................................................................................................9

6.3 CONFIGURATION EXAMPLE OF THE ANALOGUE OUTPUT............................................................................................................10

6.4 HYSTERESIS AND COMPARE MODE.................................................................................................................................................10

6.5 STRUCTURE OF THE MENU SYSTEM ................................................................................................................................................11

6.6 DESCRIPTION OF THE MENU SYSTEM..............................................................................................................................................12

7. TROUBLESHOOTING...................................................................................................................................................................................15

8. MAINTENANCE AND REPAIR .....................................................................................................................................................................16

9. STORAGE CONDITIONS..............................................................................................................................................................................16

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Thank you for choosing a NIVELCO instrument.

We are convinced that you will be satisfied with our product!

1. INTRODUCTION

NIPRESS DD-400 series differential pressure transmitters work in a 3-wire system, measure pressure and convert it into voltage or current output. The NIPRESS DD-

400 family equipped with stainless steel sensors, rotatable LCD display, 3-wire 4…20 mA current output and one or two PNP switching output. The transmitters are

suitable for the measurement of pressure difference between gases and fluids in the 0–70 bar (0–1015 psi) pressure range.

2. ORDER CODE (NOT ALL COMBINATIONS POSSIBLE!)

NIPRESS D D

–

Measuring

method Code Process connection Code Range / Max. static pressure

[bar](2) Code Accuracy Code Output / Ex Code

Differential D ¼" BSP A 0 – 0.1 … 1 adjustable / 7 F 2% 5 4…20 mA 3-wire 2

½" BSP C 0

–

0.2 … 2 adjustable / 20 G

¼" NPT(1) G 0

–

0.35 … 3,5 adjustable / 20 O

½" NPT(1) H 0

–

0.7 … 7 adjustable / 70 K

–

2 … 20 adjustable / 70 M

–

3.5 … 35 adjustable / 70 N

–

7 … 70 adjustable / 70 P

(1) Threaded inner process connection

(2) Custom measuring range available; subject to prior negotiation.

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3. TECHNICAL SPECIFICATION

Type DD

–

45

–



Measuring range 0

–

70 bar (0

–

1015 psi) (per order code)

Overload tolerance Per order code

ccuracy 2 %

Medium temperature −40°C…+125°C (−40°F…+257°F)

mbient temperature −25°C…+85°C (−13°F…+185°F)

Materials of the wetted parts

Sensor Stainless steel 1.4435 (316L) (2 pcs)

Sensor seal FKM

Process connection Stainless steel 1.4404 (316L)

Housing PA 6.6, Polycarbonate

Output 4…20 mA (3-wire), 1 or 2 PNP switching output

Switching output Short circuit protected PNP output (max.: 125 mA)

djustable switching delay between 0...100 mp

Power supply (USupply) 24V DC ±10%

Load resistance 500 Ω

Display

4-digit (7 mm), red LED display;

Range of indication: −1999…+9999;

Accuracy: 0.1% ±1 digit;

Damping: 0.3

–

30 sec (adjustable)

Process connection Per order code

Electrical connection M12x1 (5-pin, metal)

Ingress protection IP65 (M12x1)

Electrical protection Class III (SELV)

Weight ~ 0.35 kg (0.77 lbs)

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3.1 DIMENSIONS

DDC

–

45

–

½" NPT ¼" NPT ½" BSP ¼" BSP

3.2 ACCESSORIES

- User’s and programming manual

- Warranty card

- EU declaration of conformity

- Mounting bracket

- Two screws

3.3 SPECIAL CONDITIONS OF SAFE USE

Make sure the installation is complete with no visible defects before turning on the device.

The device may only be used within the limitations specified in the technical specifications.

The acceptable measuring medium are liquids and gases that can be used with the diaphragm material: sensor; stainless steel 1.4435 (316L),

process connection; stainless steel 1.4404 (316L).

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4. INSTALLATION

With the mounting bracket the transmitter can be mounted on smooth surfaces or walls. The mounting bracket is screwed onto the plastic housing of the transmitter.

Remove the blind caps and use the screws. The use of a sealing armature is required for the device to be replaced during operation. A simple ball valve is suitable for

lower pressures; higher pressures (above 6 bar) require a three-way blow-off valve. The pressure ports of the device are marked. Make sure that the higher pressure

is connected to the input “P+”, the lower pressure is connected to the input “P-” pressure port!

4.1 INSTALLATION INSTRUCTION

Install the device only in a depressurized and disconnected state!

The medium may be dangerous; therefore, suitable protective clothing, gloves, and goggles are required for the installation process.

Remove the packaging and the protective cap just before the beginning of the assembly to avoid any damage to the diaphragm. Keep the protective cap! In case the

unit is not installed immediately, the protective cap must be put back on as soon as possible! Treat any unprotected diaphragm with utmost care, as it can be damaged

very easily.

Torque must only be transmitted to the hexagonal screw on the instrument body (torque wrench). When installing the device, avoid applying strong mechanical stress

on the pressure port! It will result in a shift of the characteristic curve or damage the device.

The transmitter housing is grounded to suppress electronic noise. If the grounding of the device is correct, no further grounding is needed, otherwise the instrument

must be grounded.

Positioning the display:

The display and the operating module can be rotated for easy readability even in unusual mounting positions. The pivoting of the module is limited. Do not rotate the

display beyond the rotation limits.

Tightening torques:

¼" BSP: max. 20 Nm; ½" BSP: max. 50 Nm;

¼" NPT max. 30 Nm; ½" NPT max. 70 Nm;

The specified tightening torques must not be exceeded!

Installation steps for BSP process connection (DIN 3852):

Do not use any additional sealing material such as Teflon tape! Check if the O-ring is intact, its surface even and clean and seat in the designated groove

accurately. Screw the device into the correct thread by hand! If your device is to be secured with a knurled ring instead of a hexagon head screw, the pressure

transmitter should only be tightened by hand! Devices with hexagon head screw mounting must be tightened using a suitable open-end wrench (torque wrench)!

Do not use any additional sealing material such as Teflon tape! Check if the O-ring is undamaged, its surface is flawless and clean and it is seated in the designated

groove. Screw the device into the correct thread by hand! If your device is secured with a knurled ring instead of a hexagonal screw, the pressure transmitter must

only be tightened by hand! Devices with hexagonal screw mounting must be tightened using an open-ended wrench (torque wrench)!

Installation steps for NPT process connection:

Use suitable seal (e.g. a PTFE-strip)! Screw the device into the correct thread by hand, and tighten it with a wrench!

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5. WIRING

Wiring the device must be done according to the pin-out table and the wiring diagram.

Use a shielded and twisted multicore cable for the electrical connection.

Wiring diagram M12x1 (5-pin, metal) pin configuration

Electrical connection M12x1 (5-pin)

Power supply + 1

Power supply −3

3-wire: signal + 2

Switching output 1 4

Switching output 2 (optional) 5

Shield pressure port -

5.1 ARRANGEMENT EXAMPLES

3-wire differential pressure transmitter

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6. PROGRAMMING

6.1 CONFIGURATION

The status of the outputs is indicated by 2 LEDs.

The LEDs will light up when the respective point has

been reached, and the contact is active. The green

LED 1 is on if switching point 1 is reached and the

switch output 1 is active. The yellow LED 2 lights up

when switching point 2 is reached, and the switch

output 2 is active (optional).

Regardless of the number of PNP switches, the menu structure is the same for all device types. They differ

only in the number of menu items. Following the chart (6.5) and the menu list (6.6) they guide you through

all possible menu items.

The 4-digit 7-segment display shows the measured value and provides information about the menu items.

The two buttons below the display are for moving in the menu and setting the parameters.

Button “ ”: moves forward in the menu system or increases the displayed value.

Button “ ”: moves backwards in the menu system or decreases the displayed value.

Pressing the two buttons simultaneously: pressing both buttons at the same time changes between

display mode and configuration mode and confirms the menu items and values.

When setting the values, the counting speed can be increased by holding down the up or down key for more

than 5 seconds.

The menu navigation is a wrap-around system scrolling both forward and backward through the individual

set-up menus to the desired item.

Changes take effect only after pressing the two buttons together and leaving the menu item.

All settings are stored permanently in an EEPROM so settings will not be forgotten even after disconnecting

from the supply voltage.

6.2 PASSWORD

The menu system of the device can be protected by a password, so it is only possible for authorized persons to change the settings. If password access ("PAon") is

activated, the entire menu system will be locked. For more information, see "6.6 Description of the Menu System." Entering the password will make the entire menu

accessible again, and the password can be changed in the special menu item 4. If the password is lost or forgotten, restore the factory default settings of the device.

Use the special menu item 2 to do so.

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6.3 CONFIGURING THE ANALOG OUTPUT (EXAMPLE)

The analog output can be configured in the menus ZP (zero point) and EP (end point). The following example shows how to use them:

In this example, the device has a measurement range of 0–6 bar (0–87 psi), and it is connected to P1. The analogous signal amounts to 4…20 mA / 3-wire and were

configured in the menu 26 “SiAn” on “P1.”

The output analog signal:

0 bar (0 psi) = 4.00 mA 3 bar (43.5 psi) = 12.00 mA 6 bar (87 psi) = 20 mA.

If the value is changed from 0 to 1 in ZP and the EP value from 6 to 5 , the output signal changes as follows:

1 bar (14.5 psi) = 4.00 mA 3 bar (43.5 psi) = 12.00 mA 5 bar (72.51) = 20 mA.

The values of ZP and EP are adjustable up to 1:10 of the nominal pressure range.

6.4 HYSTERESIS AND COMPARE MODES

The diagrams below show the operation of the switch outputs.

To reverse the relevant modes, you have to swap the values for the switch-on and switch-off points.

Compare mode inverted Compare mode Hysteresis mode inverted Hysteresis mode

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