HE-200C, Field-Installation Type Electric Conductivity Meter HE-200C, HORIBA

The HE-200C is HORIBA's field-installation type conductivity meter for continuous monitoring of electrical conductivity, TDS, and temperature in a wide range of industrial and pharmaceutical applications. It supports the full lineup of HORIBA 2-electrode conductivity sensors across three cell constants (0.01, 0.1, and 1.0 /cm), including sensors compliant with the pharmacopoeias of multiple countries (USP, EP, JP), making it equally suited to pure water loop monitoring and regulated pharmaceutical manufacturing processes. The instrument provides two isolated 4–20 mA outputs, three relay contacts — including a dedicated USP conductivity requirement alarm — RS-485 communication for SCADA integration, and an external hold contact input. The IP65-rated aluminium alloy housing with SUS304 fittings ensures reliable performance in demanding field environments.

Key Features HE-200C

• Compatible with ESH, ESD, ESL, and FS Series 2-electrode sensors (cell constants 0.01, 0.1, 1.0 /cm), including USP/EP/JP-compliant sensors for pharmaceutical processes.
• Wide conductivity range up to 2000 μS/cm (cell-constant dependent); TDS conversion; temperature measurement 0–100 °C (display −10 to 160 °C); resolution 0.01 °C.
• Two isolated 4–20 mA DC outputs (max. 900 Ω): output 1 for conductivity (free range), output 2 for temperature; hold and burnout options.
• Three relay contact outputs (SPDT 1c, 250 V AC / 30 V DC, 3 A): R1/R2 selectable as upper/lower limit alarm or USP conductivity requirement; FAIL alarm contact.
• Contact input for external transmission hold; RS-485 2-wire isolated communication for SCADA/DCS integration.
• Flexible temperature compensation: NaCl characteristic, arbitrary coefficient (±3%/°C), or none — with automatic pure water compensation in deionized water range.
• IP65 (IEC60529 / JIS C0920); pole (50 A) or wall mount; aluminium alloy housing; SUS304 fittings and hood; reflective monochrome LCD.
• CE marked: EN61326-1 Class A, EN61010-1, RoHS EN50581; FCC Part 15 Class A.

Applications

The HE-200C is suited to continuous conductivity monitoring in pure water and ultrapure water systems, boiler water and steam condensate monitoring, pharmaceutical manufacturing (USP/EP/JP compliance), industrial process water, wastewater treatment, and general water quality monitoring requiring field-grade durability.

Installation and Safety Notes

Mount on a 50 A pole or wall. Power: 100–240 V AC ±10%, 50/60 Hz, 15 VA max. When sensor, transmission, or contact input cables are extended to 30 m or more, the CE marking surge test does not apply — fit appropriate surge absorption elements. An internal arrester (spark-over voltage 400 V) is provided for transmission output, contact input, and communication terminals. Operating temperature: −20 to 55 °C; storage: −25 to 65 °C; humidity: 5–90% RH non-condensing.

Technical Specifications