Benchtop Multi-parameter Water Quality Meter LMPWM-T2040

Introduction

Benchtop Multi-parameter Water Quality Meter with 7 inch display measures pH, mV, relative mV, water hardness, and temperature and Ion concentration of the sample. With expanded memory, it stores and recalls up to 1000 readings. Calibration due reminder informs operator to calibrate the meter regularly.

This water testing equipment is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Used in multi-parameters based research testing , and quality analysis of water, other general liquids across water plants, food and beverages production units, laboratories, and institutes.

Specifications

pH Range	-2.00 to 20.00 pH
pH Accuracy	± 0.002 pH
pH Resolution	0.1/0.01/0.001 pH, selectable
pH Calibration Points	1 to 5 Points
pH Buffer Solutions	( pH 4.0/7.00/10.01) or (pH 4.01/6.86/9.18) or buffers
mV Range	± 2000 mV
mV Accuracy	± 0.2 mV
mV Resolution	0.1 mV, selectable
mV Calibration Points	1 Point, only for relative mode
Ion Measurement Range	0.01 to 30000 ppm, mg/l, mol/l, mmol/l (Refer range of ion selection)
Ion Measurement Accuracy	±0.5% F.S (Monovalent), ±1% F.S (Divalent)
Ion Measurement Resolution	0.001/0.01/0.1/1
Ion Measurement Calibration Points	2 to 5 points
Ion Measurement Calibration Solutions	0.001/0.01/0.1/1/10/100/1000/10000 ppm, mg/L, mol/L
Ion Measurement Methods	Direct reading, known addition, known subtraction, sample addition, sample subtraction
Water Hardness Measurement Range	0.05 to 200 mmol/L, 0 to 1120 °dH, 0 to 1404 °e, 0 to 2000 °fH, 0 to 8000 mg/L (Ca²⁺), 0 to 19999 mg/L (CaCO₃)
Water Hardness Measurement Accuracy	± 1% F.S
Water Hardness Measurement Resolution	0.001/0.01/0.1/1
Water Hardness Calibration Points	2 to 5 points
Water Hardness Calibration Solutions	0.01/0.1/1/10/100 mmol/L
Temperature Measurement Range	0 to 105°, 32 to 212°F
Temperature Measurement Accuracy	± 0.5°C, ± 0.9°F
Temperature Measurement Resolution	0.1°C, 0.1°F
Temperature Measurement Calibration Points	1 Point
Temperature Range	0 to 100°C, 32 to 221°F
Temperature Compensation Mode	Manual or Automatic
Data Hold Function	Manual or Automatic endpoint detection
Stability Criteria	Low or High
Calibration Due Alarm	1 to 31 Days
Reset Function	Yes
Memory	Stores up to 1000 sets data
Connector	connector
Output	communication interface
Display	7 inch display
Power Supply	DC 12 V, AC adapter, AC 220 V, 50 Hz
Dimensions	240 × 220 × 80 mm
Net Weight	1.7 kg
Gross Weight	2.2 kg

Features

Common features Auto read feature to lock and read endpoint measurement

Stability indicator to record stable measurement reading

Reset feature automatically sets all function to default condition

Automatic interval readings, sends the measurement data to the computer/printer

communication interface to transfer store data

pH features 1-5 points push button calibration to automatically identify pH buffer

Convenient to select pH buffer standard (//) or custom calibration solutions

Automatic temperature compensation, provides accurate readings over entire pH range

Automatic electrode diagnosis with pH slope, offset display

Alarm when pH readings are out of range

features 1 point offset calibration, can adjust display value to known standard

Relative and absolute millivolt mode of measurement

Water Hardness features 2 to 5 points calibration with high to low concentration

Advanced measurements using different measurement units

Ion features 2 to 5 2 to 5 points calibration, when 8 concentration points are selected

Different concentration units like ppm, mg/l, mol/l, mmol/l for selection

Automatic recognition of ion selective electrode

Different Ion measurement methods for selection

Calibration report with details of calibration standard and slope

FAQs

1. What are the key factors to consider when selecting this water testing equipment for laboratory use?

When selecting this water testing equipment, key factors include: 1) The instrument's precision and accuracy to meet experimental requirements; 2) Compatibility with the types of samples and applications you will be working with; 3) Ease of use and maintenance requirements; 4) Safety features to protect operators and samples; 5) Calibration and certification requirements; 6) Cost-effectiveness and long-term reliability; 7) Technical support and service availability from the supplier. Evaluating these factors ensures that the instrument meets your laboratory's specific needs.

2. How often should this water testing equipment be calibrated to ensure accurate results?

It is recommended to calibrate this water testing equipment at least once every 6-12 months under normal usage conditions. More frequent calibration (every 3-6 months) may be necessary if: 1) The instrument is used continuously for extended periods; 2) It is exposed to harsh environmental conditions (temperature fluctuations, humidity, dust); 3) It is used for critical applications requiring high precision; 4) The instrument has been moved or subjected to physical shock; 5) Calibration checks indicate significant deviations from standard values. Always follow the manufacturer's calibration guidelines.

3. What are the common maintenance procedures required for this water testing equipment?

Common maintenance procedures include: 1) Regular cleaning of the instrument's exterior and sample contact surfaces to prevent contamination and ensure proper operation; 2) Inspection of moving parts (if applicable) for wear and lubrication as recommended by the manufacturer; 3) Replacement of consumable parts (filters, bulbs, reagents) according to usage guidelines; 4) Verification of performance parameters (temperature, pressure, voltage) regularly; 5) Storage of the instrument in a clean, dry environment when not in use; 6) Keeping a maintenance log to track service activities and identify potential issues early; 7) Following the manufacturer's specific maintenance schedule for optimal performance and longevity.

4. Can this water testing equipment be used with different types of samples, and are there any compatibility considerations?

Yes, this water testing equipment can be used with a variety of sample types, but compatibility considerations are important: 1) Check if the instrument's materials are compatible with the chemical composition of your samples (avoid corrosive or reactive substances that may damage the instrument); 2) Ensure that the sample volume and concentration are within the instrument's recommended range; 3) For biological samples, consider sterility requirements and potential cross-contamination risks; 4) For volatile or hazardous samples, ensure proper ventilation and safety precautions are in place; 5) Consult the manufacturer's documentation for specific sample compatibility guidelines, and perform compatibility tests with new sample types before regular use.

5. What should be done if the water testing equipment malfunctions or produces inconsistent results?

If malfunctions or inconsistent results occur: 1) First, check the instrument's user manual for troubleshooting guidelines specific to the issue; 2) Verify that the instrument is properly calibrated and within its calibration period; 3) Inspect for obvious issues such as loose connections, damaged parts, or incorrect settings; 4) Clean the instrument thoroughly to remove any contamination that may affect results; 5) Repeat the experiment with a known standard sample to determine if the issue is with the instrument or the sample; 6) If the problem persists, discontinue use of the instrument to prevent further damage or inaccurate results; 7) Contact technical support or a qualified service technician for diagnosis and repair, providing details of the issue and any troubleshooting steps already performed.