thermal conductivity
7866 Thermal Conductivity Analyzer
7866 Thermal Conductivity Analyzer uses the principles of thermal conductivity to provide a highly sensitive and accurate analysis of a binary mixture of gases and can also be calibrated to measure a single component of a multi-component gas mixture.
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What Is It?
Honeywell’s 7866 Thermal Conductivity Analyzer is designed to provide a highly sensitive and accurate analysis of a binary mixture of gases. The thermal conductivity analyzer can also be calibrated to measure a single component of a multi-component gas mixture. The analyzer comes in two versions – a Triple Range Analyzer and Single Range Analyzer. While the Triple Range Analyzer monitors hydrogen purity in hydrogen-cooled generators and carbon dioxide in air and hydrogen for power plant applications, the Single Range Analyzer can be used for gas measurement across variety of applications and industries. The reliable and solid state design of these thermal conductivity analyzers offers high sensitivity, excellent stability and fast response times.
How Does It Work?
The 7866 Thermal Conductivity Analyzer uses the principles of thermal conductivity to determine the concentration of a sample gas. It consists of three basic components - the sensing unit (transmitter), the control unit (receiver) and a power supply. The sensing unit receives a continuous flow of the binary or multi-component gas mixture, measures the concentration of the sample gas and transmits an electrical signal to the control unit. The control unit receives the output signal from the sensing unit at the sampling site via the interconnecting cable. This unit then provides a current output signal to a remote device for monitoring or recording purposes.
What Problems Does It Solve?
The absence of right gas concentration in a process can result in reduced productivity and hazardous conditions like explosions. The 7866 Thermal Conductivity Analyzer addresses these issues and helps users achieve a safe and efficient process, with cost effective and precise gas measurement.
Processing & Performance Metrics
- Accuracy
- ±2% of span (output signal) at reference conditions
- Sample Flow Rate Influence
- <±0.5% of span (0.2 to 4 cfh/100 to 2000 cc/min)
- Maximum Drift
- Zero/Span: ±2% of span per week
Electrical Specifications
- Sample Requirements
- Temp: -10 to +50 deg C (14 to 122 deg F), Flow: 0.2 to 4.2 cfh (100 to 2000 cc/min), Pressure: 37 mm Hg min
- Power Requirements
- Control Unit: 90 to 264 VAC (18 VA max) or 24 VAC/DC (12 VA max)
- Output Signal
- 0 to 20 mA or 4 to 20 mA (max load 800 Ω)
- Ambient Requirements
- RH: 90% max, Temperature: -10 to +50 deg C, Storage Temperature: 70 deg C max
Measurement & Sensor Related (Measurement Capabilities)
- Reproducibility
- ±1% of span (24 hour)
- Repeatability
- ±0.3% of span (short term)
Technical Specifications
- Connection Type
- 1/4 in OD Tubing (Sample/Reference), 1/2 in Conduit (Power)
Environmental Conditions
- Atmospheric Pressure Influence
- ±0.01% of span per inch H₂O (±0.05% per mm Hg)
- Analyzer Type
- Single Range or Triple Range (CO₂ in Air, H₂ in CO₂, H₂ in Air)
- Ambient Temperature Influence
- Sensing Unit: <1% Full Scale Over Range, Control Unit: ±0.01% per deg C
Standards & Certifications
- Approvals
- FM/CSA Class I, II, III Div 1 (Triple Range std, Single Range opt), CE, IP65 Panel Front
Applications & Compatibility
- Applications
- Hydrogen purity in generators, hydrogen in ammonia/nitrogen, hydrogen in hydrocarbons
Processing & Performance Metrics
- Accuracy
- ±2% of span (output signal) at reference conditions
- Sample Flow Rate Influence
- <±0.5% of span (0.2 to 4 cfh/100 to 2000 cc/min)
- Maximum Drift
- Zero/Span: ±2% of span per week
Electrical Specifications
- Sample Requirements
- Temp: -10 to +50 deg C (14 to 122 deg F), Flow: 0.2 to 4.2 cfh (100 to 2000 cc/min), Pressure: 37 mm Hg min
- Power Requirements
- Control Unit: 90 to 264 VAC (18 VA max) or 24 VAC/DC (12 VA max)
- Output Signal
- 0 to 20 mA or 4 to 20 mA (max load 800 Ω)
- Ambient Requirements
- RH: 90% max, Temperature: -10 to +50 deg C, Storage Temperature: 70 deg C max
Measurement & Sensor Related (Measurement Capabilities)
- Reproducibility
- ±1% of span (24 hour)
- Repeatability
- ±0.3% of span (short term)
Technical Specifications
- Connection Type
- 1/4 in OD Tubing (Sample/Reference), 1/2 in Conduit (Power)
Environmental Conditions
- Atmospheric Pressure Influence
- ±0.01% of span per inch H₂O (±0.05% per mm Hg)
- Analyzer Type
- Single Range or Triple Range (CO₂ in Air, H₂ in CO₂, H₂ in Air)
- Ambient Temperature Influence
- Sensing Unit: <1% Full Scale Over Range, Control Unit: ±0.01% per deg C
Standards & Certifications
- Approvals
- FM/CSA Class I, II, III Div 1 (Triple Range std, Single Range opt), CE, IP65 Panel Front
Applications & Compatibility
- Applications
- Hydrogen purity in generators, hydrogen in ammonia/nitrogen, hydrogen in hydrocarbons
- Accuracy : ±2% of span (output signal) at reference conditions
- Sample Requirements : Temp: -10 to +50 deg C (14 to 122 deg F), Flow: 0.2 to 4.2 cfh (100 to 2000 cc/min), Pressure: 37 mm Hg min
- Sample Flow Rate Influence : <±0.5% of span (0.2 to 4 cfh/100 to 2000 cc/min)
- Reproducibility : ±1% of span (24 hour)
- Repeatability : ±0.3% of span (short term)
- Power Requirements : Control Unit: 90 to 264 VAC (18 VA max) or 24 VAC/DC (12 VA max)
- Output Signal : 0 to 20 mA or 4 to 20 mA (max load 800 Ω)
- Maximum Drift : Zero/Span: ±2% of span per week
- Connection Type : 1/4 in OD Tubing (Sample/Reference), 1/2 in Conduit (Power)
- Atmospheric Pressure Influence : ±0.01% of span per inch H₂O (±0.05% per mm Hg)
- Approvals : FM/CSA Class I, II, III Div 1 (Triple Range std, Single Range opt), CE, IP65 Panel Front
- Applications : Hydrogen purity in generators, hydrogen in ammonia/nitrogen, hydrogen in hydrocarbons
- Analyzer Type : Single Range or Triple Range (CO₂ in Air, H₂ in CO₂, H₂ in Air)
- Ambient Temperature Influence : Sensing Unit: <1% Full Scale Over Range, Control Unit: ±0.01% per deg C
- Ambient Requirements : RH: 90% max, Temperature: -10 to +50 deg C, Storage Temperature: 70 deg C max
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