HI9142

Description

The HI9142 is a rugged, portable, waterproof dissolved oxygen (DO) meter designed to provide reliable measurements under harsh environmental conditions. The meter features manual calibration and an auto-off function. The HI9142 is supplied complete with polarographic probe, PTFE membrane caps, electrolyte fill solution, protective shield, and rugged carrying case.

• Easily Replaceable Membrane Caps
• One or Two Point Calibration
• Waterproof

The HI9142 is a durable, waterproof dissolved oxygen (DO) meter designed to provide reliable measurements under harsh environmental conditions. The meter features manual calibration at 100% and automatic calibration in zero oxygen solution. The HI9142 includes a polarographic probe with replaceable polytetrafluoroethylene (PTFE) membrane caps and protective shield. The rugged, waterproof housing of the HI9142 solves many of the problems with frequent field use.

  Features/Benefits:
Automatic Temperature Compensation
•  The HI9142 compensates for changes in the solubility of oxygen in water and for the permeability of the polymer membrane from temperature effects.
•  All readings are automatically compensated for temperature variations with a high-accuracy, built-in linearized thermistor temperature sensor behind a stainless steel cover.

One or Two Point Calibration
• Calibration for the HI9142 is performed as a manual calibration at 100% and automatic calibration in zero oxygen solution.

  Polarographic Measuring System
•  The meter and probe use polarographic sensor technology based on the Ross and Clark polarographic measurement method.
•  The probe is comprised of a platinum cathode and silver anode in an electrolyte solution held in place over the surfaces of the electrodes by a polymer membrane.
• An external voltage applied across the system establishes a current proportional to the concentration of dissolved oxygen.

Replaceable Membrane Caps
• The pretensioned polytetrafluoroethylene (PTFE) membranes employ a screw cap design for simple filling of electrolyte and easy replacement on the probe.

SPECIFICATIONS

DO Range :	0.0 to 19.9 mg/L (ppm)
DO Resolution :	0.1 mg/L (ppm)
DO Accuracy (@ 25°C/77°F) :	±1.5% F.S.
Temperature Range :	-5.0 to 50.0°C (23.0 to 122.0°F)
Temperature Resolution :	0.1°C (1°F)
Temperature Accuracy (@ 25°C/77°F) :	±0.2°C (±1°F) (excluding probe error)
Temperature Compensation :	automatic, 0 to 50°C (32 to 122°F)
Probe :	polarographic DO probe, internal temperature sensor, DIN connector
Calibration :	manual, at one or two points (zero and slope)
Battery Type / Life :	1.5V AA (4) / approx. 500 hours of use
Environment :	0 to 50°C (32 to 122°F); RH max 100%
Dimensions :	196 x 80 x 60 mm (7.7 x 3.1 x 2.4″)
Weight :	500 g (1.1 lb.)
Ordering Information :	HI9142 is supplied complete with HI76407 DO probe, HI76407A/P pre-formed PTFE DO membranes (2), HI7041S electrolyte solution (30 mL), batteries, instructions and rugged carrying case.
Warranty :	2 years (probe 6 months)