FOXBORO 873EC-JIPFGZ Replacement Conductivity Transmitter

The FOXBORO 873EC-JIPFGZ Replacement Conductivity Transmitter is the electrodeless (toroidal) conductivity analyzer of the Foxboro 873EC series, measuring the conductivity of aqueous solutions in µS/cm, mS/cm or percent concentration, with solution temperature measurement for automatic temperature compensation. Per the official 873EC manual, the "-J" option code specifies the 100 V ac supply voltage; the analyzer provides an isolated output signal proportional to the measurement for transmission to an external receiver.
Key Features

1. Electrodeless (toroidal) conductivity measurement — no electrodes in contact with the process
2. Display in µS/cm, mS/cm or % concentration (preprogrammed curves: HCl, NaCl, H3PO4, HNO3, H2SO4, Oleum, NaOH)
3. Solution temperature measurement with automatic temperature compensation (100 Ω RTD or 100 kΩ thermistor sensors)
4. Isolated output signal (4–20 mA / 0–10 V dc / 0–20 mA options per manual) for transmission to external receivers
5. Microprocessor-based with EEPROM — operating parameters retained through power interruptions
6. User-configurable: measurement range, alarm configuration, diagnostics, output characterization
7. "-J" supply option: 100 V ac (50/60 Hz ±3 Hz) per official manual
8. Accuracy ±0.5% of upper range limit
9. Designed for use with 871EC / 871FT series electrodeless conductivity sensors

1. Type Designation: 873EC-JIPFGZ
2. Product Type: Electrodeless conductivity electrochemical analyzer / transmitter
3. Supply Voltage: 100 V ac ("-J" option)
4. Supply Frequency: 50 or 60 Hz, ±3 Hz
5. Output Signal: Isolated 4–20 mA / 0–10 V dc / 0–20 mA
6. Accuracy: ±0.5% of upper range limit
7. Measurement Ranges: 50, 100, 200, 500 µS/cm; 1 to 2000 mS/cm
8. Concentration Ranges: e.g. HCl 0–15%, NaCl 0–25%, H3PO4 0–35%, HNO3 0–10%, H2SO4 0–25% / 93–99.5%, NaOH 0–15% / 0–20%
9. Temperature Measurement: −17 to +199 °C (100 Ω RTD); −17 to +121 °C (100 kΩ thermistor)
10. Ambient Temperature: −25 to +55 °C
11. Humidity: 5–95% noncondensing
12. Sensor Compatibility: 871EC series (SP, HP, NL, TF, PN, PX, RE, BW, LB, UT, EV, AB, PP, PT) and 871FT flow-through sensors
13. Origin:USA

1. Verify the option code configuration against the unit data label and the 873EC ordering information before installation.
2. Mount the analyzer in a location within ambient limits (−25 to +55 °C, 5–95% RH noncondensing); provide clean, stable 100 V ac supply.
3. Connect the 871EC/871FT sensor wiring per the manual — observe RTD vs. thermistor sensor type and cable runs.
4. Configure the full-scale range (FSC) as low as practical for best accuracy (accuracy is ±0.5% of FSC), plus alarms and output characterization via the 4-digit parameter codes.
5. After power-up, verify the temperature reading and calibrate the loop (isolated output vs. external receiver) before commissioning.

1. What does the 873EC measure? It measures the conductivity of aqueous solutions (µS/cm, mS/cm) or chemical concentration (%), using an electrodeless/toroidal sensor — no electrodes in the process.
2. What accuracy does it provide? ±0.5% of upper range limit, per the official manual.
3. Which sensors work with it? 871EC series electrodeless conductivity sensors (with 100 Ω RTD or 100 kΩ thermistor temperature elements) and 871FT flow-through sensors.

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