Hengesbach Pressure and Level Transmitter PZM Series 050D

The PZM050D pressure transmitter is suitable for measuring the pressure and filling level, fulfilling the basic requirements of exactness. The robust stainless steel field housing in the hygienic design and the checked protection classes IP 67 and IP 69K withstand all aggressive and residue-free cleaning procedures such as those required in the food industry. The 050D series pressure transmitter are equipped with a micro-processor controlled electronics system and an accuracy of ≤ ± 0.2% FS. They are parametrised with a simple and user-friendly operating concept via 2 keys and a multi-colour status LED. A TurnDown of up to 4 can be set using the full and empty adjustment.

The modular process connection system PZM acts as the process connection and gives its name to the pressure transmitter. This enables universal connection to almost any process connection from DN40 using only a single pressure transmitter and a suitable process connection adapter. The PZM pressure transmitters make a considerable contribution to achieving sustainable process chains. The process connection adapters available: Welded-in lugs for pipes and tanks, threaded and DIN 11851, conical couplings , VARIVENT^® DIN 11864-1 female unions, DIN32676 clamps, etc. The PZM modular process connection is certified according to EHEDG type EL-Aseptic class I and has thus been successfully tested for use in applications with the highest require- ments made of hygiene. The design with press screws and O-ring seals enables alignment of the transmitter with simultaneous micro-organism impermeability. The PZM050D pressure transmitters are highly-suited to use in applications with strict standards of hygiene and basic requirements of functionality and accuracy.

Features:

• EHEDG-Aseptic certified modular process connection system
• accuracy ≤ ± 0,2%FS
• simple parametering via 2-key concept and multi-colour status-LED
• vacuum- und overload safe
• easy to clean and high protection classes IP 67 und IP 69K
• for measurement of pressure and filling level in tanks and pipes with basci requierments
• simple calibration, even without disconnection of the transmitter, through switchable power supply plant / calibrator supply
  

Specification:

General details

Device type/measuring principle

PZM050D: piezoresistive

Input

Measuring ranges

PZM050D

Standard nominal measuring range [bar]

Relative

OP

Absolute

OP

Relative

OP

Absolute

OP

OP = overload protection [bar]

0 to 0.35

1

-1/0 to 10

30

0 to 10

30

Special measuring ranges are available on request

0 to 1

3

0 to 1

3

-1/0 to 30

90

0 to 30

90

-1/0 to 2.5

8

0 to 2.5

8

-1/0 to 100

250

0 to 100

250

-1/0 to 5

15

0 to 5

15

All measurement cells are vacuum safe

Setting the measuring ranges

via the 2 keys within the transmitter

Setting ranges

Measuring range begin

zero:

0 to 75%

of the sensor's nominal measuring span

TD=4

Measuring span

span:

25 to 100%

of the sensor's nominal measuring span

Burst pressure DIN16086

>= 4-fold nominal measuring range

Output

Output signal

2-wire:   4 to 20mA with a test circuit connection in the device

Fault signal

22mA

Current limitation

3.8mA and 21mA (normal operation, cannot be set)

Measuring accuracy

Reference conditions

acc. to DIN IEC 770

Linearity, hysteresis and repeatability acc. to the limit point method DIN IEC 770

≤ ± 0.2% of the sensor nominal measuring range

Activation time

< 2 s (The device will carry out a self-test.)

Setting time

< 1s

Long-time drift

≤ 0.2% of the span per year

Thermal hysteresis

≤

0.2% of the sensor's nominal measuring range / 10K (-20 to +80°C) from 4 bar

≤

0.3% of the sensor's nominal measuring range / 10K (-20 to +80°C) up to 0.6 bar

Conditions of use

Installation position / calibration position

Any position / standing vertically

Medium temperature

T1:

-40 °C to +125 °C (140 °C for max. an hour)

T2:

-40...+200°C (high-temperature version)

Ambient storage temperature

-40...+85°C (below -20 °C danger of cable breakage)

Protection class acc. to EN60529

IP 67 and IP 69K

Electromagnetic compatibility

acc.to EN 61326-1

Construction

Electrical connection

- Standard:

M16x1.5 cable screw connection, nickel-plated brass (stainless steel available on request)

- Optional:  M12x1 round plug-in connector, nickel-plated brass (stainless steel available on request)

- Optional:  angle plug acc. to EN 175301-803

- Optional:  reference cable

Process connection

- Membrane, flush-welded on the front, CrNiSt

- EHEDG type EL-ASEPTIC CLASS I, certified connection system PZM /

with press screw M38x1.5 and elastomer sealing

- EPM process seal (FDA conform) (range -20...+150°C, standard with temperature version T1)

- Process seal FPM (FDA conform) (range -40...+200°C, standard with temperature version T2)

Construction

Materials

- Field housing / lid:

CrNiSt 1.4301 (304)

- Electronics cast:

Silgel

- Housing seal:

FPM (Viton®)

- Pressure compensation element:

Polyamide

- Process connection / connection adapter:

CrNiSt 1.4404 (304)

- Process membrane:

CrNiSt 1.4435/1.4404 (316L)

- Reference cable, 5-wire with reference tube:  PUR (recommended: 80 m maximum)

Filling fluid

Silicon oil (FDA)

Display and operation

Display

Multiple-colour status LED

Operation

2-key concept

Auxiliary energy resources

Power supply / burden

12...30V DC, max. burden: (Vsupply – 12V) / 22mA

Accessories 050D

Certificates

Calibration certificate

Declaration of conformity

Material certificate acc. to EN 10204

EHEDG certificate

Download Data Sheet: Pressure and Level Transmitter PZM Series 050D

Ref: Hengesbach.com