Pathfinder Instruments HPMC-20 Resistivity Meter

Pathfinder Instruments HPMC-20 Resistivity Meter
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Price: $350.00
Product ID : HPMC-20
Manufacturer: Pathfinder Instruments
Weight: 2.00 lbs
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Description

PATHFINDER INSTRUMENT MODEL HPMC-20 RESISTIVITY METER
General description

Similar to the HPT-20, The HPMC-20 Resistivity Indicator/Controller works with the RC-20 Probe, offers an easy-to-read display and provides a user-adjustable control relay output with coinciding red and green LED indicators.

Technical Description

AC power is applied to the digital meter and provides 5VDC to the signal conditioning board. The signal conditioner provides sine wave excitation to the resistivity cell and bias to the integral semiconductor temperature sensor. The dynamic resistance of the sensor closely matches the resistivity change of pure water over the r ange of 0 to 80°C and automatically provides readings referenced to 25°C. The output of the signal conditioner is 0 to 2VDC for a resistivity of 0 to 20 Megohm/cm. This is applied to the input of the digital meter. When the front panel switch is pressed an internal adjustable reference voltage is displayed on the meter. This voltage is compared with the resistivity signal and the relay is activated when the resistivity is less than the set point (Red LED is ON). When the measured resistivity is greater than the set point the set point the relay energizes (Green LED is ON). The resistivity cell is constructed of 316SS electrodes, PVDF body, ethylene propolene “ O ” rings and epoxy.

Specifications

Range ..........................................................0.00 to 19.99 Megohm/cm Accuracy........................................................+/-2% of Span Temperature Compensation........................................ Automatic, 0 to 80 deg C Resolution......................................................0.01 Megohm/cm Power...........................................................115/230VAC Dimensions......................................................1.91 x 4.060 x 4.730 (inches) Resistitivty Cell...............................................316SS, PVDF Body, 3/4 inches MPT Polypro, IN - LINE Fitting Relay...........................................................2 Amp SPDT, 240VAC Resistive Load

pdf-icon.png PFI HPMC-20 Data sheet.pdf

pdf-icon.png PFI HPMC-20 Manual.pdf

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