Nitrat İyonu Ölçer Cep Tipi HORIBA LaquaTwin B741

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Nitrate Ion Meter Portable HORIBA LaquaTwin B741

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NO₃⁻ Ion Meter Portable HORIBA LaquaTwin B741

Portable, handheld design for field measurements
Ion electrode method measurement principle
Automatic range switching and temperature compensation
Minimal sample volume required (0.05 mL minimum)
IP67 waterproof and dustproof rated
Two-point calibration for accuracy
Monochrome digital LCD display
Auto-hold and auto-shutoff (30 minutes) functions
Approximately 400 hours battery life on continuous use

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Daha fazla detay

Fast and reliable nitrate ion measurement device — a compact meter for field and laboratory applications. Specialized application packages are available for crop production (B-741) and soil (B-742) testing. Ideal for rapid on-site nitrate analysis with automatic range switching and temperature compensation.

Technical Specifications

Measurement Principle	Ion electrode method
Measurement Range (Model B-741)	NO₃⁻: 100–9900 ppm (mg/L); NO₃⁻-N: 23–2200 ppm (mg/L)
Measurement Range (Model B-743)	NO₃⁻: 62–6200 ppm (mg/L) (10⁻³ to 10⁻¹ mol/L); NO₃⁻-N: 14–1400 ppm (mg/L)
Display Range (B-741)	0–9900 ppm (mg/L)
Display Range (B-742)	0–800 ppm (mg/L)
Display Range (B-743)	0–9900 ppm (mg/L)
Range and Resolution	0–1.0 ppm: 0.1 ppm; 0–99 ppm: 1 ppm; 100–990 ppm: 10 ppm; 1000–9900 ppm: 100 ppm
Calibration	Two-point calibration
Accuracy	±10% of reading value
Functions	Automatic range switching • Temperature compensation • IP67 waterproof/dustproof • Auto-hold • Auto-shutoff (30 minutes)
Display Type	Dedicated monochrome digital LCD
Operating Temperature/Humidity	5–40 °C; ≤85% relative humidity (no condensation)
Power Source	CR2032 batteries (x2)
Battery Life	Approx. 400 hours continuous use
Housing Material	ABS epoxy
Dimensions/Weight	164 mm × 29 mm × 20 mm (excluding protrusions) / Approx. 50 g (battery excluded)
Ion Interference / Selectivity Coefficient	I⁻ = 10; Cl⁻ = 4×10⁻²; Br⁻ = 9×10⁻¹; ClO₄⁻ = 3×10⁻³; NO₂⁻ = 7×10⁻¹; pH range: pH 3–8 at 10⁻³ mol/L NO₃⁻

Applications

Soil nitrate testing and nutrient analysis
Crop production management and fertilizer optimization
Food quality control and agricultural monitoring
Water quality assessment for irrigation systems
Hydroponics and nursery management
Environmental sampling and field diagnostics
Greenhouse nutrient monitoring

Frequently Asked Questions

What is the difference between models B-741, B-742, and B-743?

B-741 is optimized for crop/plant tissue analysis, B-742 for soil testing with lower measurement range (30–600 ppm), and B-743 for general-purpose water and nutrient solution analysis with extended range (62–6200 ppm).

How much sample is needed for measurement?

The minimum sample volume is 0.05 mL; however, 0.3 mL or greater is recommended for optimal measurement stability.

Is this meter waterproof?

Yes, the meter is IP67 rated, meaning it is waterproof and dustproof, suitable for field use even in wet conditions.

What type of calibration is required?

The meter uses two-point calibration to ensure accuracy across the measurement range.

How long do the batteries last?

Under continuous use, the CR2032 batteries provide approximately 400 hours of operation.

Does the meter compensate for temperature variations?

Yes, the meter includes automatic temperature compensation to maintain measurement accuracy across the 5–40 °C operating range.