ZFG for Heat Treatment Furnaces
- Gas concentrations of 5 components measurable simultaneously and continuously (Note). Concentrations of max. 4 gas components among NOx, SO2, CO2, CO and CH4 are continuously measurable with the infrared sensor, and that of O2 is continuously mea- surable with a magnetic force or galvanic cell type oxygen sensor in combination with a full-fledged sampling block.
- Standard with 3-range analyzerMeasurement can be performed over a broad range us-ing the range selector key.
- Compact and easy to use.The analyzing block and sampling block are separated from each other to facilitate transport and installation. Operation is easier because operation keys and display unit are all gathered in the analyzing block.
- A rich variety of standard functions incorporated.Auto zero calibration and auto drain discharge function are incorporated for ensuring an excellent maintainability. Max. 8-channel outputs are allowed including instan- taneous concentration value, O2-corrected value, O2- corrected moving average value and CP calculation value outputs.
The compact NDIR gas analyzer (ZSVF) consists of an analyzing block (infrared sensor and oxygen sensor) and a sampling block.
For gas extractor, either simplified measurement (non-fixed type) or continuous measurement (fixed type) probe is select- able at option.
Because a single beam type high-sensitivity mass flow sen- sor is adopted for the infrared sensor, long-term stability and maintainability are excellent.
This analyzer is capable of simultaneously measuring max. 5 components among NOx, SO2, CO2, CO, CH4 and O2 in sample gas, and is used for flue gas from stationary emis- sion sources such as various boilers, garbage incinerators and heat treatment furnaces, and for plant cultivation and research-purpose chemical analysis.
ZFG_Datasheet | ZFG_Catalog | ZFG_Manual
Description
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Principle Non dispersive infrared absorption method (single-beam) Measurable components and ranges CO2: 0 to 0.5%…100 vol%
CO: 0 to 0.5%…100 vol%
CH4: 0 to 1%…10 vol%
• Up to two components
• 2 switchable ranges
• Maximum range ratio 1 : 5Repeatability ≤ ±0.5% FS Linearity ≤ ±1.0% FS
≤ ±2% FS when range ratio is 1 : 4 or 1 : 5Zero drift ≤ ±2% FS per week Span drift ≤ ±2% FS per week Interference effect ≤ ±2% FS Response time ≤ 10 s (90% response from gas inlet) Analog output signal 4–20 mA DC, 0–1 V DC, 0–100 mV DC, or 0–10 mV DC
Instantaneous value output (concentration of each component)
CP value output (option)Display Backlit LCD (with automatic light off function)
Japanese or English (as specified)
Instantaneous value, CP value (option), parameter setpointsRange switchover by key operation, automatic, or
by external contact input (option)Contact output SPST relay contact
Device error (standard), range identification signal (option)External contact input (option) No-voltage contact
Remote range switching, remote hold of output signalGas inlet/outlet Rc1/4 or NPT 1/4 Purge gas flow rate 1 L/min (as needed) Finish color Off-white (Mansell 10Y7.5/0.5 equivalent) Enclosure Steel casing, indoor use Surrounding temperature/humidity -5°C to 45°C, RH 95% or lower (no condensation) Warm-up time Approx. 30 min Mounting method Panel mount Power supply voltage 100–240 V AC, 50/60 Hz, 50 VA Dimensions H 211 x W 218 x D 257 mm Weight Approx. 5 kg Calibration gas Zero: N2 or dehumidified air
Span: 90%–100% of each rangeGas conditions Flow rate 0.5 L/min ±0.2 L/min Temperature 0°C to 40°C Pressure ≤ 5 kPa Dust ≤ 0.3 μm Mist Unallowable Moisture Below the saturation vapor density at room temperature (Non condensing) Corrosive gas HCl ≤ 1 ppm
