Flush-Mounted Pressure and Level Transmitter PZM 100/101 Series Hengesbach

The PZM  pressure transmitters are suitable for taking pressure and filling level measurements in pipelines and containers. The modular process connection system offers a wide range of connection adapters and helps to cut costs in the long term. The flush-mounted process connection with O-ring seal and stainless steel membrane is certified to EHEDG type EL-ASEPTIC CLASS 1 and is thus predestined for measurements which satisfy even the most stringent hygiene requirements. The sensor measuring ranges of the piezoresistive vacuum-proof measuring cell with stainless steel membrane of the PZM pressure transmitters range from -1/0…0.35bar to -1/0…100bar.

Special measuring ranges are possible for both versions. All the pressure transmitters in series 100/101 are designed for universal applications and, in particular, for applications with constantly high temperatures of up to 200°C. Furthermore, using the on-site display with series 100 and the display and operating module OPUS M in series 101, the pressure transmitters can be simply read out, configured and diagnosed.

Features:

• EHEDG-aseptic certified modular process connection system
• precise measurements ≤ ± 0,15% FS
• Turn Down 10
• integrated or external display and operating module OPUSM
• vacuum proof and extremely overload safe
• direct entry of parameters with plain text display
• easy to clean and high protection classes IP 67 and IP69K
• application strengths: content and process pressure measurements / vacuum measurements even at high temperatures

Specification:

General details

Device type / measuring principle

PZM 100/101: piezoresistive

VRM 100/101: capacitive

Input

Measuring ranges

PZM 100/101

VRM 100/101

Standard nominal measuring range [bar]

relative

OP

absolute

OP

relative

OP

absolute

OP

OP = overload protection [bar]

0...0.35

1

-1/0...4

25

0...4

25

0...1

3

0...1

3

-1/0...10

40

0...10

40

-1/0...2.5

8

0...2.5

8

-1/0...20

40

0...20

40

Special measuring ranges are available on request.

-1/0...5

15

0...5

15

-1/0...40

60

0...40

60

-1/0...10

30

0...10

30

-1/0...70

105

0...70

105

-1/0...30

90

0...30

90

All measuring cells are vacuum-proof

-1/0...100

250

0...100

250

Setting the measuring ranges

Via the keypad of the OPUSM display and operating module / via the integrated on-site display

Setting ranges

Start the measuring zero:

0...90% of the sensor's nominal measuring span

TD=10

Measuring span:

10...100% of the sensor's nominal measuring span

Burst pressure DIN16086

≥ 4-fold measuring range

Output

Output signal

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

Fault signal

Optional: 3.8mA, 22mA, hold (i.e. holding the last value)

Current limitation

3.85mA and 21.5mA (normal operation)

Integration time

Continuously selectable between 0 and 300s (setting time after a pressure leap)

Measuring accuracy

Reference conditions

acc. to DIN IEC 770

Linearity, hysteresis and repeatability as per the limit point method DIN IEC 770

≤ ± 0.15% of the sensor's nominal measuring range

DIN IEC 770

Activation time

< 5s (the device will carry out a self-test.)

Setting time (without damping)

< 200ms

Long-time drift

≤ 0.2% of the span per year

Thermal hysteresis

≤ ± 0.75% beginning of the measuring range / ≤ ± 0.8% end of the measuring range (VRM)

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

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

Conditions of use

Installation position / calibration position

Any position / standing vertically

Medium temperature

PZM:

T1:

-40...+125°C (140°C over one hour at the most)

T2:

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

VRM:

-40...+140°C

Ambient storage temperature

Type 101:

-40...+85°C

Type 100:

-30...+75°C

(Below -20°C cable breakage might occur and the display's function may be impaired.)

Protection class acc. to EN60529

IP 67 and IP 69K

Electromagnetic compatibility

Sensitivity against interference: acc. to DIN IEC 61000-6-2

Interference radiation:

acc. to DIN IEC 61000-6-4

Construction

Electrical connection

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

- Optional: round plug-in connector M12x1, 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, other materials available on request

- EHEDG type EL-ASEPTIC CLASS 1, certified connection system PZM / VRM

with press screw M38x1.5 and elastomer sealing

- Process seal EPM (FDA) (temperature range: -20...+150°C)

- Process seal FPM (FDA) (temperature range: -40...+200°C)

Materials

- Field housing / lid:

CrNiSt 1.4301 (304)

- Housing seal:

FPM (Viton®)

- Pressure compensation element:

polyamide

- Inspection gauge (type 100):

polycarbonate

- Process connection / connection adapter:

CrNiSt 1.4404 (316L)

- Process membrane:

CrNiSt 1.4435/1.4404 (316L)

- Locking screw (type 101):

CrNiSt 1.4301 (304)

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

Filling fluid

PZM:

silicon oil (FDA)

VRM:

medical mineral oil (FDA)

Display and operation

Display

LCD, 4-digit numerical display and 5-digit alphanumerical display

Type 100:

integrated on-site display (cannot be separated from device)

Type 101:

external OPUSM display and operating module

Displayable units

Pressure:

mbar, bar, psi, Pa, mH2O, mmHg, Torr, atm, at, kg/cm²

Temperature*1:

°C, °F, K, °R, °Ré

Additional displays

Output current in mA or % (in relation to the span)

Operation

100:00:00

via the configuration menu with the integrated on-site display

101:00:00

via the configuration menu with the external OPUSM display and operating module

Auxiliary energy resources

Power supply / burden

12-36V DC, max. burden: (Vsupply – 12V) / 24mA

Accessories 100 series

OPUSM display and operating module

External display and operating module, CrNiSt, IP 67, 41x70mm, 1m connection cable and round plug-in

connector M12x1

Certificates

Calibration certificate

Declaration of conformity

Material inspection certificates as per EN 10204

EHEDG certificate

Download Data Sheet: Flush-Mounted Pressure and Level Transmitter PZM 100_101 Series

Ref: Hengesbach.com