Hengesbach PZM/VRM 200/201 Pressure and Level Transmitter

Hengesbach PZM/VRM 200/201 Pressure and Level Transmitter digital pressure and level transmitters PIEZOMESS PZM / VARIMESS VRM – Series 200, with their O-ring seals, are suitable for pressure and level measurements without dead spaces, under strict cleanliness conditions, as well as for viscous and crystallizing media. They have a modular, flush-mounted connection concept with various adaptors. 

The PIEZOMESS PZM / VARIMESS VRM – Series 100 consists of one basic device, which can be combined with various application-specific adaptors, e.g. welding sockets, DRD, VARIVENT, DIN 11851, Clamp, Flange DIN, etc. In combination with the advantages of digital electronics, e.g. a large measuring range and on-site adjustability, this concept results in clearly reduced storage space and spare parts and thus to a cost reduction in materials administration.

During operation, various pressure units can be shown on the local display (OPUS), along with the sensor temperature as a secondary process indicator. The display and operating module has either been integrated into the field housing or is available as an external housing with a plug connection. 

Hengesbach PZM/VRM 200/201 Features:

  • High precision ≤ ± 0,05% FS, turn down 10, vacuum safe
  • Further scope of functions thanks to programmability
  • Optional with HART® protocol
  • Tank linearisation for standard tank shapes and special designs thanks to volumetric measurement with OPUSi
  • Diagnosis function for monitoring of devices
  • Copying of device parameters with easy transfer
  • Integrated on-site display or external OPUSi display and operating module for parametrization and display of measured values
  • Application strength: highly precise measurement of content pressurized tanks / vacuum measurements with high temperatures
  • EHEDG-aseptic certified modular process connection system

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General details
Device type / measuring principle PZM 200/201/200H/201H: piezoresistive
VRM 200/201/200H/201H: capacitive
Measuring ranges PZM 200/201/200H/201H
Standard nominal measuring ranges [bar] relative OP absolute OP
OP = overload protection [bar] -1/0…0.35 1
-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
-1/0…100 250 0…100
Setting the measuring ranges Via the keypad of the OPUSi display and operating module / via the integrated on-site display
Optional: via HART® (for the range of functions see the operating instructions)
Setting ranges Start the measuring zero: 0…90% of the sensor’s nominal measuring span TD=10
Measuring span span: 10…100% of the sensor’s nominal measuring span
Burst pressure DIN16086 ≥ 4-fold measuring range
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 300s (setting time after a pressure leap)
Reference conditions acc. to DIN IEC 770
Linearity, hysteresis and repeata bility 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 ≤ ± 0.75% beginning of the measuring range / ≤ ± 0.8% end of the measuring range (VRM)
≤ ± 0.2% of the sensor’s nominal measuring range / 10K (-20 to +80°C) from 4bar (PZM)
≤ ± 0.3% of the sensor’s nominal measuring range / 10K (-20 to +80°C) up to 0.6bar (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 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 PZM/VRM 200/201

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Ref: hengesbach.com

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