Shanghai Hongyi Instrument Co., Ltd. is a manufacturer specializing in the production of various laboratory analytical instruments. The DDS-12D precision digital conductivity meter produced is widely used to measure the electrical conductivity of distilled water, deionized water, drinking water, boiler water, industrial wastewater, and general liquids. It can also be used for testing the purity of high-purity water in electronics, chemical, pharmaceutical, and power plants.

1、 Instrument features

1. Using 3 1/2 digit LED digital display, the reading is clear and intuitive.

2. Excessive range overflow display 1. Eliminate gear shift measurement errors.

3. The measurement error within the full range is not greater than ± 1.5%.

4. An electrode with a constant of "1" is used throughout the entire range, which can detect the conductivity of high-purity water ranging from 0.1 to 0.05 μ S/cm (10M Ω to 20M Ω) and is also suitable for measuring the conductivity of general liquids. The measurement range is 0-2 × 10 ^ 4 μ S/cm.

5. There is no human body sensing phenomenon when measuring high-purity water, and the displayed value is accurate.

6. The decimal point position and high/low measurement frequencies are synchronously changed with the "range", and the measurement results are read directly without the need to multiply by "magnification". And it has temperature compensation function.

2、 Main technical performance of the instrument

1. Measurement range: 0.001-2 × 10 ^ 4 us/cm (i.e. 1000M Ω～ 5 Ω), divided into the following six range settings: (see instruction manual)

2. Display: 3 1/2-digit LED.

3. Measurement error: ≤ ± 1.5% F.S.

4. Temperature compensation range: 10-40 ℃. Benchmark 25 ℃.

5. Stability: ± 0.67%/24h.

6. Power consumption: not exceeding 5W.

3、 Usage conditions

1. Environmental temperature: 5-40 ℃;

2. Relative humidity of the environment: ≤ 85%；

3. Power supply: 220V ± 10%, 50Hz ± 2%.