Specs at a glance
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Input
1x Puls/Analog
2x RTD/Analog
Loop power supply 24V DC (+/-16%) -
Output
1x 4...20mA
2x digital (Open Collector) -
Display
160 x 80 Dot-Matrix LCD with white backlit
colour change in case of alarm event
active display area 70 x 34 mm -
Calculations
heat quantity and heat quantity difference
Field of application
The BTU meter RH33 is used in applications with liquid energy carriers.
It calculates the thermal energy of water acc. to EN1434, glycol/water mixtures or other fluids such as thermal oils. Temperature sensor matching using calibrated temperature sensors is done in the device.
Potential for cost savings can be shown by using the software available as an accessory.
The device has a custody transfer approval and allows bi-directional measurement, e.g. charging/discharging of a heat accumulator.
Recording and billing the quantities of heat and cold in:
Heating circuits
Cooling circuits
Combined heating and cooling circuits
Typical application areas in industry, long-distance heat networks and building automation.
Benefits
Transparent energy consumption helps you save on energy costs
Calibrated, electronically paired temperature sensors ensure the highest accuracy and enable replacement of individual temperature sensors even for certified devices in the field (without reapproval!)
Tariff counter for requirements-based billing
Detailed data logging of current and counter values and of error messages, off-limit conditions and changes to operating parameters
Standard models are suitable for connecting and supplying all common volume flow transmitters and temperature measuring points
Remote readout via Ethernet and fieldbuses
Verified and certified reliability and accuracy
Videos
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Technical excellence
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
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| FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Lean selection Handle your core processes easily |
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Extended selection Optimize your processes with innovative technologies |
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Xpert selection Master your most challenging applications |
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Predecessor
Success stories
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Most downloaded
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Operating Instruction (BA)
BA EngyCal RH33
English version - 09/2025
Calibratable BTU meter for one measuring point with one pulse/analog input for flow and two RTD/analog inputs for temperature/pressu re
EN 30/09/202531/07/2021Language:
English
Version:
30/09/2025
File size:
2.8 MB
File name:
BA00290KEN_0825-00.pdf
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Technical Information (TI)
TI EngyCal RH33
English version - 09/2025
Calibratable BTU meter for one measuring point with one pulse/analog input for flow and two RTD/analog inputs for temperature/pressu re
EN 30/09/202530/09/2021Language:
English
Version:
30/09/2025
File size:
836 KB
File name:
TI00151KEN_0525-00.pdf
-
16 documents
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-
Technical Information (TI)
TI EngyCal RH33
Calibratable BTU meter for one measuring point with one pulse/analog input for flow and two RTD/analog inputs for temperature/pressu
reEN 30/09/202530/09/2021Language:
English
Version:
30/09/2025
File size:
836 KB
File name:
TI00151KEN_0525-00.pdf
-
-
-
Operating Instruction (BA)
BA EngyCal RH33
Calibratable BTU meter for one measuring point with one pulse/analog input for flow and two RTD/analog inputs for temperature/pressu
reEN 30/09/202531/07/2021Language:
English
Version:
30/09/2025
File size:
2.8 MB
File name:
BA00290KEN_0825-00.pdf
-
-
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Operating Instruction (BA)
EngyCal® RH33 および RS33、およびバッチコントローラ RA33 取扱説明書
熱量演算器 RH33、蒸気演算器 RS33、およびバッチコントローラ RA33 用
MODBUS の追加取扱説明書EN 24/06/2016Language:
Japanese
Version:
24/06/2016
File size:
1.2 MB
File name:
BA01029KJA_1416-00.pdf
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-
-
Operating Instruction (BA)
FDM Field Data Manager Software MS20, MS21
Data management and visualization
EN 04/10/2021Language:
English
Version:
04/10/2021
File size:
5.9 MB
File name:
BA00288R09EN_1221.pdf
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Short Instruction (KA)
KA EngyCal RH33
Calibratable BTU meter for one measuring point with one pulse/analog input for flow and two RTD/analog inputs for temperature/pressu
reEN 30/09/202516/09/2021Language:
English
Version:
30/09/2025
File size:
1.8 MB
File name:
KA00289KEN_0525-00.pdf
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Manufacturer Information (MI)
Manufacturer information RH33
Software update to new Firmware for EngyCal RH33
Language:
English
Version:
31/01/2014
File size:
119.4 KB
File name:
MI01256KEN_0114.pdf
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Fields of Activities (FA)
コンポーネントカタログ
HAW562-
HAW569-
MS20-
MS21-
RA33-
RB223-
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READWIN-
RH33-
RIA14-
RIA15-
RIA16-
RIA45-
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RLN22-
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RMA42-
RMC621-
RMS621-
RN22-
RN221N-
RN42-
RNB22-
RNF22-
RNO22-
RS33-
RSG30-
RSG35-
RSG40-
RSG45-
RXO20Language:
Japanese
Version:
29/08/2022
File size:
11.7 MB
File name:
Fa00016k33ja_2019.pdf
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Fields of Activities (FA)
Systemprodukte und Datenmanager
Lösungen zur Komplettierung der Messstelle
Anzeiger, Interfacegeräte, Überspannungsschutz, Energie- und
Applikationsmanager,
Datenmanager, Bildschirmschreiber und
Softwarepakete für die ProzessautomatisierungLanguage:
German
Version:
17/05/2023
File size:
14.5 MB
File name:
FA00016KDE_2323_online.pdf
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Fields of Activities (FA)
System Products and Data Managers
Solutions for the loop
Indicators, interface devices, surge arresters, energy and application
managers, data managers, paper
less recorders and associated
software packages for process automationLanguage:
English
Version:
17/05/2023
File size:
14.5 MB
File name:
FA00016KEN_2323_online.pdf
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AI (Application note)
Saving energy with smart e-boiler monitoring
Boosting sustainability with real-time energy insights
Language:
English
Version:
19/12/2025
File size:
1.1 MB
File name:
AI01440K09EN01.25.pdf
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Search spare parts by number in drawing
60 spare parts & accessories
60 spare parts & accessories
60 spare parts & accessories
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Spare Parts Rx33
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Housing/housing accessories
Drawing numberOrder code1XPR0001- -
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Spare Parts Rx33
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further parts
Drawing numberOrder code2,4,5XPR0001- -
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CPU Board Rx33
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Electronic
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Spare Parts Rx33
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Spare Parts Rx33
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Electronic
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Terminal strip 3 pole FMC1,5/3-ST-3,5
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Electronic
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Field Data Manager Software MS20
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further parts
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Field Data Manager Software MS21
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further parts
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Mainboard Rx33
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Electronic
Drawing numberOrder code6XPR0003- -
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Terminal plug 2pole space5.0
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Terminal module
Drawing numberOrder code971084277 -
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Insert TPR100
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further parts
Order codeTPR100- -
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iTHERM Insert TS111
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further parts
Order codeTS111- -
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iTHERM ModuLine TM131
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further parts
Order codeTM131- -
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Accessories System Products
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further parts
Order codeRK01- -
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Software Rx33 (Release Code)
Drawing numberOrder code7XPR0004-
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3 products
Often bought together
Accessories
- Software Rx33 (Release Code)
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