Pressure and Level Transmitter PZT 200/201 Hengesbach

Pressure and Level Transmitter PZT 200/201
Pressure and Level Transmitter PZT 200/201

The PZT 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 elastomer-free sealing cone is predestined for measurements which satisfy even the most stringent hygiene requirements.

The vacuum-proof measuring cell with stainless steel membrane works on the basis of the piezoresistive measuring principle The PZT pressure transmitters are designed to measure from -1/0…0.35 to -1/0…100bar. Special measuring ranges are also available on request. Given the nature of the design for long-term medium temperatures of up to 125°C / 200°C, CIP and SIP cleaning methods can be used on the transmitters. The high protection classes of IP67 and IP69K also mean that the devices can be safely cleaned on the outside with foam and a high-pressure cleaner and that moisture is reliably prevented from entering into the device.

Features:

  • Modular process connection system with elastomer-free sealing cone
  • High precision 0.05% fs, turn down 10, vacuum safe
  • Optional with hart®protocol
  • Tank linearisation for standard tank shapes and special designs thanks to volumetric measurement
  • Diagnosis function for monitoring of devices
  • Copying of device parameters with easy transfer
  • Application strengths: measurement of content of pressurised tanks / vacuum measurements with high temperatures

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Specification:

General details

Device type / measuring principle PIEZOTEC PZT 200/201/200H/201H: piezoresistive

Input

Measuring ranges PZT 200/201/200H/201H
Standard nominal measuring ranges [bar] relative OP absolute OP
OP = overload protection [bar] 0…0.35 1
0…1 3 0…1 3
-1/0…2.5 8 0…2.5 8
Special measuring ranges  -1/0…5 15 0…5 15
-1/0…10 30 0…10 30
All measuring cells are vacuum-proof -1/0…30 90 0…30 90
-1/0…100 250 0…100 250
Setting the measuring ranges Via the keypad of the OPUSi display and operating module / via the integrated on-site display
Optional: via HART®
Setting ranges Start the measuring zero: 0 to 90% of the sensor’s nominal measuring span TD=10
Measuring span span: 10 to 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
Optional: 4…20mA HART®
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 300 s (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 ≤ ± 0.05% of the sensor’s nominal measuring range
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 ≤ ± 0.2% of the sensor’s nominal measuring range / 10K (-20 to +80°C) from 4bar
≤ ± 0.3% of the sensor’s nominal measuring range / 10K (-20 to +80°C) up to 0.6bar

Conditions of use

Installation position / calibration position Any position / standing vertically (position-dependent zero point displacement)
Medium temperature T1: -40…+125°C (140°C over one hour at the most)
T2: -40…+200°C (high-temperature version)
Ambient storage temperature Type 201/201H: -40…+85°C
Type 200/200H: -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

Download Data Sheet: Pressure and Level Transmitter PZT 200/201

Ref: hengesbach.com