Hengesbach Pressure and Level Transmitter PZT050D Series

Hengesbach Pressure and Level Transmitter PZT050D Series

Pressure and Level Transmitter PZT050D Series
Pressure and Level Transmitter PZT050D Series

The PZT050D pressure transmitters are characterized by their modular process connection system and are suitable for measuring pressure and filling level in hygiene applications. The flush-mounted measuring cell with stainless steel membrane enables measur­ing ranges of -1/0…0.35bar to -1/0…100bar. The robust construction of the stainless steel field housing containing the protection classes IP 67 and IP 69K, makes the PZT050D pressure transmitter suitable for all common exterior cleaning procedures. The 050D series pressure transmitters are equipped with a micro processor controlled electronics system and an accuracy of ≤ ± 0.2% FS. They are parametrized with a simple and user-friendly operating concept via 2 keys and a multi-color status LED. A Turn Down of up to 4 can be set using the full and empty adjustment.

The process connection is characterized by the elastomer-free sealing cone, providing a metallic seal. A wide range of hygienic process connections are available as process connection adapters. This includes the female unions DIN 11864-1, VARIVENT®, DRD, DIN 32676 clamp etc.. The modular process connection system of the PZT050D pressure transmitter makes an active contribution to cost-reduction.

Features:

  • simple parametering via 2-key concept and multi-colour status-LED
  • accuracy ≤ ± 0,2%FS
  • modular process connection system with elastomic free sealing cone
  • output signal 4…20mA, TURNDOWN 4
  • measuring ranges from -1/0…0,35bar up to -1/0…100bar
  • easy to clean and high protection classes IP 67 und IP 69K
  • simple calibration, even without disconnection of the transmitter, through switchable power supply plant / calibrator supply
  • for measurement of pressure and filling level in tanks and pipes with basic requirements

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Specification:

General details
Device type/measuring principle PZT050D: piezoresistive

Input

Measuring ranges PZT050D
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…..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
– Elastomer-free sealing cone and M38x1.5 press screw

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)
– Centring O-ring: NBR 55
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

Download Data Sheet: Pressure and Level Transmitter PZT050D Series

Ref: Hengesbach.com

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