Features
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.
- 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
- Outputs are also available as intrinsically safe version
- 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 behindglass 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
- Power consumption less than 5 W
Applications
- General and critical process flows
- Feed stocks and transfers
- Custody transfer
- Well head production
- Offshore
Specification
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
Intrinsically safe versions available
Uncertainty of the analog output +/- 0.1% of reading, +/- 10µA
Digital Outputs: Up to 2 x configurable status outputs (IEC60946)
Intrinsically safe versions available
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 (standard)
Type E3, E4, E5, EP optional ½” NPT, ¾” NPT, M20 x 1.5, M25 x 1.5
Type H* two ½” NPT
Hazardous Area Approvals: For ATEX / IEC Ex and cCSAus please see Part Number Code page
Others available on request
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
Intrinsically safe versions available
Uncertainty of the analog output +/- 0.1% of reading, +/- 10µA
Digital Outputs: Up to 2 x configurable status outputs (IEC60946)
Intrinsically safe versions available
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 (standard)
Type E3, E4, E5, EP optional ½” NPT, ¾” NPT, M20 x 1.5, M25 x 1.5
Type H* two ½” NPT
Hazardous Area Approvals: For ATEX / IEC Ex and cCSAus please see Part Number Code page
Others available on request
Download
Note : Design and specifications are subject to change without notice.
Note : Please make sure the product and the device which connect with RS-485 are on common ground, avoid damaged product.