Four-ring EC/TDS Probe with Internal Temperature Sensor – HI76312

The built-in temperature sensor on the HI76312 four-ring conductivity probe compensates for temperature fluctions in the sample, providing the most accurate reading possible. The Polyetherimide (PEI) plastic body is resistant to many chemicals and allows the probe to be used over a wide range of measurements.

SKU	HI5321-01
Name	Laboratory Research Grade Benchtop EC/TDS/Salinity/Resistivity Meter with ATC and Extended Range – HI5321
EC Range	0.000 to 9.999 µS/cm, 10.00 to 99.99 µS/cm, 100.0 to 999.9 µS/cm, 1.000 to 9.999 mS/cm, 10.00 to 99.99 mS/cm, 100.0 to 1000.0 mS/cm actual EC*
EC Resolution	0.001 µS/cm, 0.01 µS/cm, 0.1 µS/cm, 0.001 mS/cm, 0.01 mS/cm, 0.1 mS/cm
EC Accuracy	±1% of reading (±0.01 µS/cm)
EC Calibration	automatic standard recognition (0.000 µS/cm, 84.00 µS/cm, 1.413 mS/cm, 5.000 mS/cm, 12.88 mS/cm, 80.00 mS/cm, 111.8 mS/cm) or user standard; single point or multi-point calibration
TDS Range	0.000 to 9.999 ppm, 10.00 to 99.99 ppm, 100.0 to 999.9 ppm, 1.000 to 9.999 ppt, 10.00 to 99.99 ppt, 100.0 to 400.0 ppt actual TDS* (with 1.00 factor)
TDS Resolution	0.001 ppm, 0.01 ppm, 0.1 ppm, 0.001 ppt, 0.01 ppt, 0.1 ppt
TDS Accuracy	±1% of reading (±0.01 ppm)
EC/TDS Temperature Compensation	disabled, linear and non-linear (natural water)
Temperature Correction Coefficient	0.00 to 10.00 %/°C
Reference Temperature	5.0 to 30.0 °C
Cell Constant	0.0500 to 200.00
Cell Type	4 cells
Salinity (% NaCl) Range	0.0 to 400.0%
Salinity (% NaCl) Resolution	0.1%
Salinity (% NaCl) Accuracy	±1% of reading
Salinity (PSU) Range	0.00 to 42.00 psu
Salinity (PSU) Resolution	0.01
Salinity (PSU) Accuracy	±1% of reading
Salinity (PSU) Calibration	one-point (with HI7037 standard)
Salinity Range	0.00 to 80.00 pp
Salinity Resolution (ppt)	0.01
Salinity Accuracy (ppt)	±1% of reading
Resistivity Range	1.0 to 99.9 Ω cm; 100 to 999 Ω cm; 1.00 to 9.99 KΩ cm; 10.0 to 99.9 KΩ cm; 100 to 999 KΩ cm; 1.00 to 9.99 MΩ cm; 10.0 to 100.0 MΩ cm
Resistivity Resolution	0.1 Ω cm; 1 Ω cm; 0.01 KΩ cm; 0.1 KΩ cm; 1 KΩ cm; 0.01 MΩ cm; 0.1 MΩ cm*
Resistivity Accuracy	±2% of reading (±1 Ω cm)
Temperature Range	-20.0 to 120.0 ºC; -4.0 to 248.0 ºF; 253.15 to 393.15 K**
Temperature Resolution	0.1 °C, 0.1 °F, 0.1 K
Temperature Accuracy	±0.2 °C; ±0.4 °F; ±0.2 K (without probe)
Input Channels	Conductivity / Resistivity / TDS / Salinity
EC/TDS Probe	HI76312 platinum, four-ring EC/TDS probe with and 1 m (3.3’) cable (included)
Logging Type	Automatic, Log on demand, AutoHold
Logging Memory	Up to 100 lots, 50,000 records max / lot / maximum 100,000 data points
Logging Interval	14 selectable between 1 second and 180 minutes
Connectivity	Opto-isolated USB
GLP	yes (Probe cell constant / offset, reference teperature, compensation coefficient, calibration points, calibration time stamp)
Calibration Timeout Reminder	yes
USP Compliant	USP Application
Profiles	up to 10, 5 each channel
Display	Color Graphic LCD 240 x 320 pixels, 8 keys capacitive touch keyboard
Power Supply	12 VDC adapter (included)
Environment	0 to 50°C (32 to 122°F; 273 to 323 K), RH max 95% non-condensing
Dimensions	160 x 231 x 94 mm (6.3 x 9.1 x 3.7”)
Weight	1.2 kg (2.64 lbs.)