Pressure transmitter for hygienic applications and monitoring of absolute or relative pressure in gases, vapors, liquids and dust – even from harzadous areas
- EHEDG-compliant hygienic process connections
- Process temperature up to 150 ° C
- Compact design
The device Precont® PU4LM is an electronic pressure transmitter for monitoring, control as well as continuous measurement of pressures in gases, vapors, liquids and dusts.
Due to the device construction with measuring ranges from -1 bar to 25 bar (gauge), measuring ranges from 0 bar to 25 bar (absolute), measuring spans from 100 mbar to 25 bar, process temperatures from –20°C to +150°C, environmental temperatures from –40°C to +100°C, process material CrNi-steel as well as the availability of a variety of hygienic EHEDG-conformal process connections like thread ISO 228-1 with front-flush O-ring gasket, dairy coupling DIN 11851, Varivent®, DRD the device is especially suitable for the use for food and beverage industry, pharmaceutical industry, biotechnology and sterile process engineering.
The device Precont® PU4LM is suitable for demanding measuring requirements.
Due to its high accuracy and the digital adjustability by HART® (7.0) or RS485 Modbus RTU, the device can be suited a wide variety of applications.
The device with front-flush diaphragm has been specifically designed for the measurement of viscous, paste-like, adhesive, crystallizing, particle-laden and contaminated media, which would clog the pressure channel of conventional process connections.
Through its optimized design, the front-flush process connection enables the cleanability of the wetted diaphragm to be integrated into the process.
The device is particularly suitable for the special conditions of CIP/SIP cleaning processes, such as chemical stability towards cleaning liquids and high temperatures.
Low-maintenance and trouble-free pressure measurement is thus also guaranteed in critical applications with frequently changing media.
The front-flush diaphragm is completely welded with the process connection and supplied with a positive seal. A reliable, dead-space free sealing between the process connection and the process adapter resp. measuring medium is thus assured.
The robust design and the high-quality workmanship turns the device into a very high quality product, which even the most adverse environmental conditions cannot affect, whether the lowest temperatures when used outdoors, extreme shock and vibration stress or aggressive media.
A captive laser marking of the type label ensures the identifiability throughout the entire lifetime of the device.
Obviously is the optional marking of a measurement point designation resp. TAG, a customer label or of a neutral type label, of course also per laser marking.
|Nominal pressure PN||-1bar…0bar / 0bar…+25bar
-1bar…+1bar / 0bar…+25bar
0bar…0,1bar / 0bar…+25bar
|Output type A – Current 4…20mA HART®|
|Analogue output 4…20mA||3,9mA…20,5mA
dI ≤ 1µA
|Time behavior||T90 ≤ 5ms
ton ≤ 0,2s
|Output type V – RS485 Modbus®-RTU|
9600 Baud (4800…38400 Baud)
|Time behavior||T90 ≤ 2ms
ton ≤ 0,1s
|Output type L – IO-Link®|
Com2 (38400 Baud)
|Analogue output||0mA…20,5mA (at 0…20mA)
≤ 0,05mA (at 0…20mA)
≤ 22mA (at 0…20mA)
dI ≤ 1µA (at 0…20mA)
3,8mA…20,5mA (at 4…20mA)
≥ 3,6mA (at 4…20mA)
≤ 22mA (at 4…20mA)
dI ≤ 1µA (at 4…20mA)
|Switch output||2x PP (Push-Pull)
switch to +L/-L
|Output||Uout ≤ 0,2V ≥ Us – 2V
Iout = 0mA…200mA
(current limited ≤ 450mA, short circuit protected)
|Time behavior||T90 ≤ 2ms
ton ≤ 0,1s
|Supply voltage Us
|9 V…35 V DC (with electronic output variant A)
9 V…30 V DC (Ex) (with electronic output variant A)
6 V…35 V DC (with electronic output variant V)
9 V…35 V DC (with electronic output variant L without IO-Link®)
18 V…30 V DC (with electronic output variant L with IO-Link®)
|Characteristic deviation||≤ ±0,15% FSO
|Long term drift||≤ ±0,2% FSO/year|
|Temperature deviation||Tk Zero
≤ 250mbar: ≤ ±0,04% FSO/K (0°C…+80°C)
≤ 250mbar: ≤ ±0,06% FSO/K (-20°C…0°C / +80°C…+150°C)
≥ 400mbar: ≤ ±0,02% FSO/K (0°C…+80°C)
≥ 400mbar: ≤ ±0,03% FSO/K (-20°C…0°C / +80°C…+150°C)
≤ ±0,02% FSO/K (0°C…+80°C)
≤ ±0,03% FSO/K (-20°C…0°C / +80°C…+150°C)
|Pressure cycles||≥ 100Mio. (1,2xPN)|
|Protection level||IP69K/IP67 (EN/IEC 60529)|