NIVELCO NIPRESS DD-400 User Manual Download Page 4

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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

 

 

 

– 

   

–   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measuring 

method

 

Code

   

Process connection

 

Code

   

Range 

/ Max. static pressure 

[bar]

(2)

 

Code

 

 

Accuracy

 

Code

 

 

Output / Ex

 

Code

 

Differential 

 ¼" 

BSP 

 

0 – 0.1 

… 

1 adjustable /  7 

 2% 

  4…20 mA 3

-wire

 

 

 

 ½" 

BSP 

 0 

– 0.2 

… 

2 adjustable / 20 

   

 

   

 

 

 

 ¼" 

NPT

(1)

 

 0 

– 0.35  …  3,5 adjustable / 20 

   

 

   

 

  

 

½" 

NPT

(1)

 

 0 

– 0.7 

… 

7 adjustable / 70 

   

 

 

 

   

 

 0 

– 2 

…  20 adjustable / 70 

   

 

 

 

   

 

 0 

– 3.5 

…  35 adjustable / 70 

   

 

 

 

   

 

 0 

– 7 

…  70 adjustable / 70 

   

 

 

(1) 

Threaded inner process connection  

(2) 

Custom measuring range available; subject to prior negotiation. 

Summary of Contents for NIPRESS DD-400

Page 1: ...ddc4f52a0600p_01 1 17...

Page 2: ...ddc4f52a0600p_01 2 17...

Page 3: ...AFE 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...

Page 4: ...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 4 5 Meas...

Page 5: ...ainless 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 Adjustable switching delay betwe...

Page 6: ...L 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 speci...

Page 7: ...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...

Page 8: ...d 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...

Page 9: ...he 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 spe...

Page 10: ...log 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 0...

Page 11: ...ddc4f52a0600p_01 11 17 6 5 STRUCTURE OF THE MENU SYSTEM...

Page 12: ...signal s value Menu 7 Excess value message Set On or Off Menu 8 Switch output selector S1 P1 P2 the switching point reacts to the static pressure at the appropriate input or DIFF difference pressure...

Page 13: ...al to the analog output if P1 or P2 is selected the analog output follows the static pressure on the suitable input By the setting DIFA DIFB and DIFC the analog output follows the calculated differenc...

Page 14: ...ll scale differs from the real full scale value in the application compensation is only possible with an appropriate reference source if the deviation of the measured value is within the defined limit...

Page 15: ...the power supply and the applied supply voltage at the device Output signal slightly offset The diaphragm of the sensor is severely contaminated Cleaning with non aggressive cleaning solutions soft b...

Page 16: ...s or pressurized air for cleaning the diaphragm Before returning the device for repairs it must be cleaned carefully the parts in contact with the medium that might contain harmful substances must be...

Page 17: ...ddc4f52a0600p_01 17 17...

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