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Instrument Introduction
The LH‑E4ISE is a lab‑grade ion analyser capable of measuring pH, ORP and a variety of ion‑related parameters. Fitted with a 7‑inch touch screen and powered by the in‑house developed LHOS smart interactive system, it delivers highly intuitive operation. Characterised by stable performance, high‑precision measurement and extensive measuring ranges, this fully‑featured multi‑parameter device simplifies workflows and supports fast on‑site laboratory testing for end‑users.
Functional Feature
1. Developed around Lianhua’s proprietary LHOS platform, this electrochemical‑spark‑series laboratory multi‑parameter ion meter accepts BNC‑connector electrodes, delivering excellent cross‑compatibility.
2. A 7.0‑inch touch‑operated LCD screen offers straightforward programming, crystal‑clear visual feedback and hassle‑free operation.
3. One‑tap toggle between Chinese and English display modes; the dual‑language layout enhances usability for diverse users.
4. It satisfies the 0.01‑grade calibration criteria specified in national metrological standard JJG757‑2018 *Laboratory Ion Meter*, fulfilling all technical specifications for standard ion‑meter verification.
5. Adopting multi‑parameter architecture, it consolidates five measurement modes: pH, ISE ion concentration, mV potential, ORP and temperature detection.
6. Three sets of built‑in pH buffer standards are available: Chinese standard, European‑American standard and NIST standard.
7. The ISE ion‑concentration mode pre‑loads 10 frequently‑measured ions, with capacity for 3 user‑defined ions. Four measurement units are selectable: pX, mol/L, mg/L and ppm.
8. It supports calibration routines, auto/manual temperature compensation, as well as automatic and manual data‑saving options.
9. Three acquisition modes are provided: real‑time measurement, interval‑based measurement and scheduled timed measurement.
10. Up to 5000 data records can be saved for each test parameter. Records can be retrieved, deleted and printed, and data remains intact upon power loss.
11. Built‑in Bluetooth enables printing and data transmission. Both real‑time readings and historical datasets can be printed or transferred externally.
12. Standard accessories include a laboratory electromagnetic stirrer and electrode holder, securing stable conditions and reliable accuracy during lab tests.
Technical parameter
Detection parameters
1.PH
1.1 Measurement range: (0~14) pH
1.2 Response time: ≤ 30 seconds
1.3 Measurement accuracy: ± 0.02pH
1.4 Resolution: 0.01pH
1.5 Temperature compensation: (5-60) ℃ automatic
1.6 Calibration method: 1-5 point calibration
2.ORP
2.1 Measurement range: -1000mV~1000mV
2.2 Response time: ≤ 30 seconds
2.3 Measurement accuracy: ± 1mV
2.4 Resolution: 0.01
2.5 Temperature compensation: (5-60) ℃ automatic
2.6 Calibration method: 1-point calibration
3. Temperature
3.1 Measurement range: (0~100) ℃
3.2 Response time: ≤ 30 seconds
3.3 Measurement accuracy: 1%
3.4 Resolution: 0.01 ℃
3.5 Calibration method: 1-point calibration
4. Fluoride ion
4.1 Measurement range: (0.019-1900) mg/L
4.2 Response time: ≤ 60 seconds
4.3 Measurement accuracy: ± 10%
4.4 Resolution: 0.1mV
4.5 Temperature compensation: (5-60) ℃ automatic
4.6 Calibration method: 2-point calibration
5. Chloride ion
5.1 Measurement range: (0.7-3500) mg/L
5.2 Response time: ≤ 60 seconds
5.3 Measurement accuracy: ± 10%
5.4 Resolution: 0.1mV
5.5 Temperature compensation: (5-60) ℃ automatic
5.6 Calibration method: 2-point calibration
6. Bromine ion
6.1 Measurement range: (0.4-8000) mg/L
6.2 Response time: ≤ 60 seconds
6.3 Measurement accuracy: ± 10%
6.4 Resolution: 0.1mV
6.5 Temperature compensation: (5-60) ℃ automatic
6.6 Calibration method: 2-point calibration
7. Iodine ion
7.1 Measurement range: (0.1-12700) mg/L
7.2 Response time: ≤ 60 seconds
7.3 Measurement accuracy: ± 10%
7.4 Resolution: 0.1mV
7.5 Temperature compensation: (5-60) ℃ automatic
7.6 Calibration method: 2-point calibration
8. Calcium ion
8.1 Measurement range: (0.4-4000) mg/L
8.2 Response time: ≤ 60 seconds
8.3 Measurement accuracy: ± 10%
8.4 Resolution: 0.1mV
8.5 Temperature compensation: (5-60) ℃ automatic
8.6 Calibration method: 2-point calibration
9. Nitrate ion
9.1 Measurement range: (0.62-6200) mg/L
9.2 Response time: ≤ 60 seconds
9.3 Measurement accuracy: ± 10%
9.4 Resolution: 0.1mV
9.5 Temperature compensation: (5-60) ℃ automatic
9.6 Calibration method: 2-point calibration
10. Ammonium ion
10.1 Measurement range: (0.018-1800) mg/L
10.2 Response time: ≤ 60 seconds
10.3 Measurement accuracy: ± 10%
10.4 Resolution: 0.1mV
10.5 Temperature compensation: (5-60) ℃ automatic
10.6 Calibration method: 2-point calibration
11. Potassium ion
11.1 Measurement range: (0.39-3900) mg/L
11.2 Response time: ≤ 60 seconds
11.3 Measurement accuracy: ± 10%
11.4 Resolution: 0.1mV
11.5 Temperature compensation: (5-60) ℃ automatic
11.6 Calibration method: 2-point calibration
12. Sodium ion
12.1 Measurement range: (0.23-2300) mg/L
12.2 Response time: ≤ 60 seconds
12.3 Measurement accuracy: ± 10%
12.4 Resolution: 0.1mV
12.5 Temperature compensation: (5-60) ℃ automatic
12.6 Calibration method: 2-point calibration
13. Copper ion
13.1 Measurement range: (0.64-6400) mg/L
13.2 Response time: ≤ 60 seconds
13.3 Measurement accuracy: ± 10%
13.4 Resolution: 0.1mV
13.5 Temperature compensation: (5-60) ℃ automatic
13.6 Calibration method: 2-point calibration
Performance parameter
4.1 Measurement range: pH/pX: (0.000~20.000) pH; （0.000~14.000）pX；
mV：（-2000.00~2000.00）mV；
Ionic concentration: (0-1) mol/L; Optional units: pX, mol/L, mg/L, ppm;
Resolution: pH/pX: 0.001, 0.01, 0.1pH/pX; optional
MV: 0.01, 0.1, 1mV optional
Temperature: 0.1 ℃;
4.3 Basic Error: Complies with the 0.01 level requirements of JJG757-2018 Laboratory Ion Meter
Error of pX Ⅰ reading of the electric meter: ± 0.01; PX Ⅱ indication error: ± 0.02
Potential indication error: ± 0.1% F.S;
Temperature: ± 0.5 ℃;
5. Physical parameters
5.1 Display screen: 7-inch touch LCD display screen;
5.2 Printer: Optional portable Bluetooth printer;
5.3 Communication method: USB transmission;
5.4 Instrument size: 226 * 158 * 62mm
5.5 Whole machine weight: 1.1Kg.
6. Working parameters
6.1 Operating temperature: (0~60) ℃;
6.2 Working power supply: DC12V, 1A;
6.3 Host power: 6W
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Instrument name |
Ion meter |
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Instrument model |
LH-E4ISE |
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Measurement metrics |
Measurement range |
Measurement accuracy |
Resolution |
Response time |
Temperature compensation |
Calibration method |
|
pH |
0-14 |
±0.02 |
0.01 |
≤30s |
(5-60）℃(automatic) |
1-5 points |
|
ORP |
-1000-+1000mV |
±1mV |
0.01mV |
≤30s |
(5-60)℃(automatic) |
1 point |
|
Temperature |
0-100℃ |
1% |
0.01℃ |
≤30s |
/ |
1 point |
|
Fluoride ion |
0.019-1900 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Chloride ion |
0.7-3500 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Bromide ion |
0.4-8000 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Iodide ion |
0.1-12700 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Calcium ion |
0.4-4000 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Nitrate |
0.62-6200 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Ammonium ion |
0.018-1800 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Potassium ion |
0.39-3900 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Sodium ion |
0.023-2300 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
|
Copper ion |
0.64-6400 |
±10% |
0.1mV |
≤60s |
(5-60)℃(manual) |
2 points |
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