YOKOGAWA ZA8F-01-A
| Model：YOKOGAWA ZA8F-01-A Manufacturer: YOKOGAWA Size: 约 140×120×80 mm Detail Specification: Manual calibration using ambient air for reference Comment:Carton Shipping Weight:2.3Kg Estimated Lead Time: 12 Weeks Payment：T/T HS CODE：9026201090 Unit price (EXW): 2900US dollars Delivery time: 12 – 16 weeks
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product details
YOKOGAWA ZA8F-01-A
The YOKOGAWA ZA8F is a dedicated flow setting unit designed specifically for zirconia oxygen/humidity analyzers, including the EXAxtZR ZR22G/ZR402G system and the ZS8 flameproof oxygen analyzer. This compact unit integrates flowmeter and flow control valves for precise gas flow management during manual calibration procedures. The ZA8F enables one-touch calibration via the converter’s key operation, delivering repeatable measurement conditions across combustion monitoring and control applications-3-31.
Below is a complete technical breakdown, followed by a detailed model analysis of ZA8F-01-A.
Complete Technical Specifications (ZA8F Series)
All data applies to the ZA8F series and the specific configuration ZA8F-01-A.
| Parameter | Specification | |
| Manufacturer | Yokogawa Electric Corporation | |
| Product Series | ZA8F | |
| System Compatibility | ZR402G converter; ZR22G detector; ZS8D detector; ZS8C converter; EXAxtZR separate-type zirconia oxygen analyzer; ZS8 flameproof oxygen analyzer | |
| Application | Manual calibration gas flow control — reference gas and calibration gas (System 1/System 2) | |
| **Flowmeter Scale | Calibration Gas** | 0.1 to 1.0 L/min |
| **Flowmeter Scale | Reference Gas** | 0.1 to 1.0 L/min |
| Calibration Gas Consumption | Approx. 0.7 L/min (at calibration time only) | |
| Reference Gas Consumption | Approx. 1.5 L/min (continuous) | |
| Construction | Dust-proof and rainproof -11 | |
| Case Material | SPCC (Cold rolled steel sheet) -11 | |
| Exterior Finish | Baked epoxy resin, Dark-green (Munsell 2.0 GY 3.1/0.5 or equivalent) -11 | |
| Pipe Connections | Rc 1/4 or 1/4 FNPT (Female) | |
| Reference Gas Pressure | Measured gas pressure + 50 kPa G; or +150 kPa G if check valve used (maximum: 300 kPa G) | |
| Weight | Approx. 2.3 kg -11 | |
| Mounting Options | 2-inch pipe (nominal JIS 50A) or wall-mounted; vertical orientation required | |
| **Ambient Temperature | Operating** | –20 °C to +55 °C |
| **Ambient Humidity | Operating** | 0 to 95% RH (non-condensing) |
| Span Calibration Gas (recommended) | Instrument air (clean and dry) | |
| Zero Calibration Gas | Supplied from external cylinder (user-supplied) |
Reference: Table is based on data compiled from YOKOGAWA IM 11M12A01-02E, IM 11M12A01-04E, and IM 11M7A3-01E-11-3.
System Configurations: Where ZA8F Fits
The ZA8F flow setting unit supports two primary system architectures within YOKOGAWA’s zirconia analyzer ecosystem:
| System Configuration | Description | Reference Gas | Span Gas | Zero Gas |
| System 1 | Manual calibration using ambient air for reference | Ambient air (21% O₂) drawn naturally | Ambient air via converter internal pump | Cylinder |
| System 2 | Manual calibration using instrument air for both reference and span | Clean instrument air via ZA8F | Clean instrument air via ZA8F | Cylinder with ZA8F |
In System 2, the ZA8F manually controls gas flow during calibration. Instrument air (21% O₂, clean and dry) functions as both reference gas and span gas. Zero gas from an external cylinder is supplied through the ZA8F during zero calibration only-2-24.
Model Code Breakdown: ZA8F-01-A
The complete model ZA8F-01-A follows YOKOGAWA’s suffix-based ordering convention. Each segment defines a specific configuration attribute.
| Model Segment | Code | Description | |
| Product Series | ZA8F | Flow Setting Unit for zirconia oxygen/humidity analyzers | |
| **Suffix Code | Joint Type** | -01 | Standard gas connection configuration — with 1/4 NPT adapter |
| Option / Style Code | -A | Style code defining standard accessory package, dimensional compliance, and factory configuration of the flow setting unit set |
Physical Configuration & Application
⚙️ Component Layout
The ZA8F incorporates three dedicated flow adjustment valves:
| Valve | Label | Function |
| Right + front needle valve | SPAN | Calibration gas (span / zero) flow setting and flowmeter |
| Top handwheel | ZERO | Zero gas flow setting valve |
During normal measurement, all valves are closed. Calibration requires sequentially opening each valve while observing the calibration gas flowmeter scale (set to 0.6 ± 0.06 L/min for span gas and 0.5 ± 0.05 L/min or equivalent for zero gas)-29-32.
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