1. Conductivity Meter
Conductivity (Konduktivitas) adalah kemampuan suatu larutan dalam menghantarkan arus listrik. Jadi, nilai conductivity (konduktivitas) akan menunjukkan konsentrasi ion dalam larutan.
Contoh yang paling mudah: Coba larutkan garam dan satunya larutkan gula. Kemudian coba tes konduktivitas keduanya. Konduktivitas larutan garam dibandingkan air mula-mula akan meningkat dikarenakan adanya penambahan garam yang jika dilarutkan dalam air, dimana garam akan terurai menjadi ion-ionnya. Dengan kata lain, ion-ionnya bertambah, maka kemampuan menghantar arus listrik juga bertambah.
Nah, sekarang coba ukur pada larutan gula. Tidak ada perubahan konduktivitas pada larutan gula dibandingkan konduktivitas air mula-mula. Karena gula tidak dapat terurai menjadi ion di dalam air.
2. Jenis Conductivity Meter
a. Conductivity Meter Pocket
1. Ionix EC1 Conductivity Tester Kit
Deskripsi:
• Conductivity measuring range 0…2000µS – 0…20mS
• Resolution Automatic scale
• Relative accuracy ±1 % F.S.
• Calibration standard recognition 1413 µS / 12.88 mS
• Points of calibration 1-2 pts
• Buffer auto recognition YES
• Indication of calibration points YES
• Stability measurement indication YES
• Auto off YES
• Display LCD
• IP Protection IP 67
• Power supply 4×1,5V AAA batteries
• Battery life > 200 hrs
• Warranty instrument/sensor 1 Year / 6 months
2. Hanna Instruments HI-98304 Conductivity Tester
Spesifikasi:
• Range 20.00 mS/cm
• Resolution 0.01 mS/cm
• Accuracy ±2% F.S.
• Calibration Automatic, 1 point
• Temperature automatic, 0 to 50°C (32 to 122°F)
• Battery Type CR2032 3V Li-ion/approx. 250 hours
• Environment 0 to 50°C (32 to 122°F); RH max 100%
• Dimensions 160 x 40 x 17 mm (6.3 x 1.6 x 0.7")
• Weight 75g
b. Conductivity Meter Portable
1. Lutron WA-2017SD pH/ORP, DO, CD/TDS, Salt Meter
Deskripsi:
· Real time data recorder, save the data into the SD memory card and can be download to the Excel, extra software is no need.
· Multi-function: pH/ORP, Conductivity/TDS, Dissolved oxygen, Salt.
· pH: 0 to 14.00 pH.
· ORP (mV): 1,999 mV.
· Conductivity: 200 uS/2 mS/20 mS/200 mS.
· TDS: 200/2,000/20,000/200,000 PPM.
· Salt: 0 to 12.0% salt (% weight).
· Dissolved oxygen: 0 to 20.0 mg/L.
· ATC (automatic temperature compensation).
· Data hold, Record (Max., Min.).
· RS232/USB computer interface.
· Optional electrode: pH electrode, ORP electrode, CD/TDS/SALT probe, Dissolved oxygen probe, pH ATC probe (TP-07).
· Patent: Taiwan, China, Japan, Germany, USA pending.
2. Hanna Instruments HI-8633/HI-8733 Multi-range Conductivity Meter
Deskripsi:
· The HI-8633 is a conductivity meter that has been designed for use in areas of production and quality control.
· This meter utilises four ring potentiometric probes that offer greater versatility over typical amperometric designs. These rugged probes are made of PVC - ideal for indoor, as well as outdoor measurements.
· Temperature compensation for the HI-8633N is performed by manual adjustment.
Key features
· Four ring potentiometric probe
· On-screen operation guide
· Multiple scales cover a wide range
3. Ionix EC100 Bench Meter
Spesifikasi:
• Conductivity measuring 0…2000µS – 0…20mS
• Resolution 0.1/1µS/cm; 0.01/0.1 mS/cm
• Accuracy ±1.0% FS ±1 digit
• Stability ±0.01 pH/3h ±1 digit
• Calibration 1 to 3 points auto calibration
• Compensation Auto or Manual Electrode
• Base Temperature 25˚C (77˚F)
• Temperature 0.00 to 9.99%/˚C
• Dimension 240x235x103mm
• Weight 1kg
3. Merek Conductivity Meter Yang Dijual
a. Ionix EC1 Conductivity Tester Kit
b. Hanna Instruments HI-98304 Conductivity Tester
c. Lutron WA-2017SD pH/ORP, DO, CD/TDS, Salt Meter
d. Hanna Instruments HI-8633/HI-8733 Multi-range
e. Ionix EC100 Bench Meter
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