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| Brand | Hanna Instruments |
|---|---|
| Origin | Italy |
| Model | HI 8751 / HI 8757 |
| Temperature Range (HI 8751) | –40.0 to +150.0 °C |
| Temperature Range (HI 8757) | –50.0 to +199.0 °C and +200 to +1350 °C |
| Sensor Type | HI 8751 — Precision Silicon RTD Probe (HI765PW) |
| Accuracy (HI 8751) | ±0.2 °C (–10.0 to +80.0 °C) |
| Accuracy (HI 8757) | ±1.0 °C or ±0.75% of reading (whichever is greater) |
| Resolution | 0.1 °C (–50.0 to +999.9 °C), 1 °C above 1000 °C |
| Power | 9 V alkaline battery (included) |
| Housing | ABS plastic (HI 8751), IP65-rated ABS with stainless steel probe (HI 8757) |
| Compliance | CE, RoHS, EN 61326-1 (EMC for laboratory equipment) |
| Brand | Hanna Instruments |
|---|---|
| Origin | Italy |
| Model | HI 146-00 / HI 151-00 |
| Instrument Type | Wall-Mounted Digital Thermohygrometer |
| Probe Type | Stainless Steel Needle Probe (HI 146-00) |
| Display | LCD |
| Power | 1 × 1.5 V AAA battery |
| Calibration Verification | Built-in self-test mode (READ/TEST switch) |
| Compliance | Designed for HACCP, ISO 22000, and FDA Food Code-compliant environments |
| Sample Contact | Air, gases, liquids, semi-solids, frozen foods |
| Brand | Truelab |
|---|---|
| Origin | Shanghai, China |
| Model | SCY-3 |
| Measurement Principle | Non-Dispersive Infrared (NDIR) Absorption |
| Detection Range | 0–2% (displayed as % vol when ≥1% |
| Accuracy | ±1.0% of full scale |
| Operating Temperature | 0–45 °C |
| Relative Humidity Limit | <90% RH (non-condensing) |
| Interference Restrictions | Excludes CH₄, SO₂, H₂S, Cl₂, NH₃, and other corrosive or spectrally overlapping gases |
| Power Supply | AC 220 V, 50–60 Hz / DC 12 V (rechargeable Ni-MH battery onboard) |
| Power Consumption | ≤3 W (DC mode) |
| Dimensions | 210 × 90 × 230 mm |
| Weight | 2.0 kg |
| Response Time (t₉₀) | ≤50 s |
| Display | Backlit Chinese-language LCD |
| Data Output | Integrated thermal printer (real-time printout of measurement records) |
| Auto-Sampling Interval | Programmable timed measurement cycles |
| Compliance | Designed per IEC 61000-6-3 (EMC), GB/T 18204.2–2014 (Chinese standard for CO₂ detection in indoor air), and general industrial safety requirements for portable gas analyzers |
| Brand | Truelab |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | BT-2 |
| Instrument Type | Digital Thermo-Hygrometer |
| Temperature Range (Internal) | –30 °C to +50 °C (–22 °F to +122 °F) |
| Temperature Range (External Probe) | –50 °C to +70 °C (–58 °F to +158 °F) |
| Humidity Range | 20–99% RH |
| Temperature Resolution | 0.1 °C/°F |
| Humidity Resolution | 1% RH |
| Temperature Accuracy | ±1 °C |
| Humidity Accuracy | ±5% RH (at 25 °C) |
| Power Supply | 1 × 1.5 V AAA alkaline battery (included) |
| Dimensions (H×W×D) | 111 × 101 × 21.5 mm |
| Display Area | 81.5 × 64.5 mm |
| Brand | Truelab |
|---|---|
| Origin | Shanghai, China |
| Model | SCY-3A |
| Measurement Range | 0–1.5% (w/w) |
| Accuracy | ±2.5% |
| Display | Chinese LCD interface |
| Power Supply | AC 220 V / 50 Hz |
| Power Consumption | ≤15 W |
| Dimensions | 450 mm × 305 mm × 550 mm (H) |
| Weight | 15 kg |
| Data Storage Capacity | 63 entries per sample type (beer + soft drinks) |
| Brand | Hanna Instruments |
|---|---|
| Origin | Italy |
| Model | HI9060 |
| Instrument Type | Portable Temperature Meter |
| Enclosure Rating | IP67 (waterproof) |
| Power Supply | 4 × 1.5 V AA batteries |
| Probe Interface | Standard BNC or mini-DIN (model-dependent) |
| Memory Capacity | Up to 100 data points |
| Operating Temperature Range | 0 to 50 °C |
| Storage Temperature Range | -20 to 70 °C |
| Relative Humidity Limit | Up to 95 % RH non-condensing |
| Calibration Points | Single-point or multi-point via calibration standards (e.g., HI765-18C, HI765000C, HI765070C) |
| Probe Compatibility | HI765BL (1 m thermistor probe), HI765L/10 (10 m thermistor probe), HI766C (penetration thermocouple probe), HI2602 carrying case |
| Brand | The Great Wall |
|---|---|
| Origin | Shanghai, China |
| Model | 272-1 Metal-Cased |
| Instrument Type | Psychrometer (Wet-and-Dry Bulb Thermometer) |
| Category | Thermo-Hygrometer |
| Manufacturing Status | Domestic Production |
| Distributor Type | General Distributor |
| Pricing | Upon Request |
| Brand | Truelab |
|---|---|
| Origin | Shanghai, China |
| Model | BT-2 |
| Instrument Type | Thermo-Hygrometer |
| Temperature Range (Internal) | –30 °C to +50 °C (–22 °F to +122 °F) |
| Temperature Range (External Probe) | –50 °C to +70 °C (–58 °F to +158 °F) |
| Humidity Range | 20–99 % RH |
| Temperature Resolution | 0.1 °C/°F |
| Humidity Resolution | 1 % RH |
| Temperature Accuracy | ±1 °C |
| Humidity Accuracy | ±5 % RH (at 25 °C) |
| Power Supply | 1 × 1.5 V AAA alkaline battery (optional) |
| Dimensions (H×W×D) | 111 × 101 × 21.5 mm |
| Display Area | 81.5 × 64.5 mm |
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