EC solutions begin on page 5.34 Specifications HI943500A HI943500B HI943500C HI943500D Range 0.0 to 199.9 mS/cm 0.00 to 19.99 mS/cm 0 to 1999 µS/cm 0.0 to 199.9 µS/cm Resolution 0.1 mS/cm 0.01 mS/cm 1 µS/cm 0.1 µS/cm Accuracy (@25°C/77°F) ±2% F.S. Calibration manual, two point, through offset and slope trimmers Temperature Compensation automatic, 0 to 60°C (32 to 140°F), with β=2%/°C Recorder Output 4-20 mA (isolated) Set Point Relay 1, isolated, 2A, max. 240 V, resistive load, 1,000,000 strokes Alarm Relay 1, isolated, 2A, max. 240 V, resistive load, 1,000,000 strokes Power Supply 115 or 230 VAC ±10% (user selectable); 50/60 Hz Enclosure flame retardant ABS body and front panel; transparent splash-proof front cover Environment -10 to 50°C (14 to 122°F); RH max 95% Panel Cutout 141 x 69 mm (5.6 x 2.7’’) Weight 1 kg (2.2 lb.) Ordering Information The HI943500 series is supplied complete with mounting brackets and instructions. Probes HI7638 PEI/glass body, 75 mm conductivity probe with internal temperature sensor and 3/8” NPT thread (immersion) HI943500A · HI943500B HI943500C · HI943500D EC Analog Controller with Direct Input from Potentiometric Probe • Automatic temperature compensation • Backlit, LCD display These controllers allow direct connection of a potentiometric conductivity probe (HI7638) with a cable up to 20 m long, without needing a transmitter to amplify the signal. The output configuration for connecting a recorder or a PLC can be chosen between 0-20 or 4-20 mA. The LED on the front panel indicates the operating status of the controller. The Automatic Temperature Compensation (ATC) is performed directly by the HI7638 probe with built-in temperature sensor. A removable, transparent splash-proof cover protects the front panel. 1. DIN connector for conductivity probe 2. mA OUTPUT terminals for connection to a recorder 3. SET SELECT terminals for reverse control operation 4. SET terminals for connection to a dosing pump 5. ALARM terminals for connection to an external alarm device 6. Power supply terminals 7. Fuse holder 15 Process Instrumentation 15.80 | www.hannainst.com controllers
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