Zirconia Type Oxygen Analyzers (O2 Meters)
SH-20 Series
Features
- Integrated sensor, receiver, and sampling mechanism enable measurement immediately after installation
- Lightweight and compact design enables easy installation in a wide range of equipment
- No standard gas or reference air required (Calibration can be performed using air-point calibration)
- Supports low-concentration measurement (minimum range: 0–1,000 ppm)
Usage
- Reflow furnaces
- Ferrite firing furnaces
- Other atmosphere management and combustion control applications
Specifications
| Model | SH-20* Series | |
|---|---|---|
| Sensor | TF-30 | |
| Receiver | DTF-201 | |
| Measuring Principle | Zirconia type limiting current method | |
| Measuring Method | Pump suction (Models with ejector suction also available) | |
| Measuring Range |
Min. 0–1,000 ppm to Max. 0–25%; Any four ranges selectable with fixed zero point *Output range configurable from 0–10 ppm to 0–100% |
|
| Calibration |
Air-point plus up to three-point calibration Air one-point calibration Calibration via data input (during sensor replacement) |
|
| Analog Output |
DC 4–20 mA, non-isolated output, load resistance ≤600 Ω DC 0–1 V / DC 0–5 V / DC 0–10 V, selectable (non-isolated output) |
|
| Sample & Calibration Gas Flow Rate | 0.5 L/min | |
| Accuracy | Repeatability | ±1% FS |
| Linearity | ±5% FS | |
| Response Time | ≤60 seconds (below 0–1,000 ppm), ≤30 seconds (0–1,000 ppm and above) (90% response when switching calibration gas) | |
| Drift | ≤±2% FS per week | |
| Power Supply |
AC specification: AC 100–240 V ±10%, 50/60 Hz, 50 VA DC specification: DC 24 V ±10%, 50 W |
|
| Contact Input | Range switching (voltage-free contact) | |
| Contact Output |
Open collector output, DC 25 V max. 50 mA Number of contacts: Up to 4 outputs Selectable functions: Analyzer fault / Range echo-back 1 / Range echo-back 2 / Range echo-back 3 / Ready / High concentration alarm / Low concentration alarm |
|
| Range Switching | Local range switching / Remote range switching / Auto range switching | |
| Output Hold Function |
Output hold value setting: No hold* / User-defined value / Value 5 seconds before fault occurrence *Output held during warm-up and analyzer fault |
|
| High/Low Concentration Alarm |
High alarm: Configurable from 0.0–9,990.0 ppm or 0.0–100.0% Low alarm: Configurable from 0.0–9,990.0 ppm or 0.0–100.0% |
|
| Communication Function |
Communication functions vary by model (RS-232C, RS-485, etc.) Please contact us for details |
|
Note: The above table shows representative specifications. Specifications vary by model; please contact us for details.
Resources
Instruction Manuals
Product Inquiries
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