RHE 21 – EXPLOSION PROOF FIELD MOUNT


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MEASUREMENTS Mass Flow
Volumetric Flow
Density
Temperature
FUNCTIONS Batch / Filling Control
Standard Volume Gas Flow
Assurance Factor®
API std. Volume, Net Oil
Tamperproof Lock Switch
OUTPUTS 2 x Analog
2 x Frequency / Pulse
2 x Digital Status
INPUTS 2 x Digital
1 x Analog
INTERFACES PC USB / RHECom
RS 485 / Modbus RTU
HART over Analog
DISPLAY Backlit Color LCD
APPROVALS ATEX / IEC Ex
CSA

The RHE21 is an advanced function, explosion proof, field mount transmitter.  With a corrosion resistant stainless steel enclosure and through-glass operation capability, the RHE21 is rated to IP67 and suitable for the most extreme of installation environments.  Multifunction capability provides real time mass and volumetric flow plus density and temperature indication with the option of connecting external sensors such as pressure transducers or precision densitometers for even greater measurement accuracy.  Features such as API Standard Volume correction and Net Oil calculation are available.  The RHE21 supports connection to any of the wide range of RHM series of mass flow sensors and can be supplied with a tamperproof switch for critical applications. When the unique Rheonik Assurance Factor® advanced diagnostics package is included, the RHE21 gives headache-free operation and provides deep insight into measurement conditions for precise process control.

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Brand

Rheonik

Features

  • Wall or Pipe Bracket Mounting
  • Corrosion resistant housing in SS316 available
  • Selectable Units for Mass, Volume, Density and Temperature
  • Positive, negative and net totalizers for both volume and mass flow
  • Two configurable pulse/frequency outputs

– double pulse available

  • Two analog outputs
  • Two configurable digital status outputs
  • Configurable digital input
  • Analog input configurable for pressure or density
  • Advanced functions: Net Oil, Baume/Brix,

% Solids, Standard Density and Standard Volume (API MPMS Ch. 11)

  • Modbus RTU and HART
  • Custody transfer lockout switch and seal point
  • Back Lit Color LCD display and 3 behind- glass buttons with intuitive menu design
  • USB connection for PC running Rheonik RHECom software
  • Built-in Assurance View® Advanced Diagnostic Set – clear publication of measurement status with Assurance Factor® and/or color changing display
  • Password Protected Setup
  • Upload and download of configuration files

Applications

  • General and critical process flows
  • Feed stocks and transfers
  • Custody transfer
  • Well head production
  • Offshore

Benefits

  • More insight into process and measurement conditions with Assurance View®
  • Assurance Factor® for proactive maintenance
  • Works with all sizes of Rheonik RHM flow sensors
  • Non-corrosive enclosure for extreme environments
  • Fast and easy setup using RHECom software

Specifications

Housing: Stainless steel. Optionally all 316 stainless steel
Enclosure Rating: IP66 / NEMA 7X. Optionally IP67
Ambient Temperature: -40 to +60°C / -40 to +140°F (reduced visibility below -20°C / -4°F)
Dimensions: Depending upon construction type, please see Dimensions page (approx. 255 x 200 x 100 mm / 10 x 8 x 4 in)
Display: Backlit color LCD. Screen changes color to indicate warning or error
Weight: 8 kg (17.5 lb)
Operation: 3 x behind-window capacitive sensors for menu navigation / settings
Sensor Connection: Integral sensor cable with 3m or 10m length or optional IS terminal box for separate custom length sensor cable connection
Analog Outputs: Up to 2 x 4-20mA outputs, active or passive, compl. to NAMUR NE-43 Uncertainty of the analog output +/- 0.1% of reading, +/- 10µA
Digital Outputs: Up to 2 x configurable status outputs (IEC60946)
Pulse/Frequency Outputs: Up to 2 x configurable pulse/frequ. outputs (IEC60946), max 10 kHz
Digital Inputs: Up to 2 x configurable control inputs (IEC60946)
Analog Input (optional): 1 x 4 – 20 mA analog input (active) for two-wire external sensor
Power Supply: 100-240 VAC (48 to 62 Hz), 5W or 12-24 VDC +/- 10%, 4W
Digital Data Communications: Modbus RTU (RS485)

Connection to a PC (USB) with Rheonik RHECom software HART over analog output

Cable Entries for Power and I/O: Type E* two M16 x 1.5 entries with Ex e glands 4-11mm Type H* two ½” NPT

Type E3, E4, E5, EP optional ½” NPT, ¾” NPT, M20 x 1.5, M25 x 1.5

Connection to Sensor, Analog Input: Type E1, E2, E3, E4, EP, H1, H2 integral sensor cable (no analog input) Type E5, H3 same entries as power and I/O
Hazardous Area Approvals: For ATEX / IEC Ex and cCSAus please see Part Number Code page Others available on request

Download

Rheonik Coriolis RHE21 Datasheet

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