500 pH/ORP/Temperature 1/4 DIN Controller

Isolated and reversible 4 to 20 mA output allow for proportional output, SPDT relays for On/Off control|Backlight, graphic LCD for clear measurement display|Automatic buffer recognition of US and NIST buffers|Automatic temperature compensation|Password protected ensures security of system|RS-485 output for remote access allows multiple unit control from your computer|Cole-Parmer online controllers offer features found in more expensive models. Backlight, graphic LCD simultaneously displays measurement, temperature, electrode status, relay status, and transmitter current output. Calibration data is stored in memory; making the unit ready for measurement. Password protection, RS-485 for remote access, and the isolated and reversible 4 to 20 mA output offer extended data options with security. |The pH/ORP 500 (05802-22) controller has one isolated and reversible 4 to 20 mA output and five programmable on/off relays: four for pH and one for temperature--ideal for high/low control to activate an alarm, a pump, or another device. ATC element is a 10K NTC or 3K Ohm Balco or 1000 Ohm PT RTD user selectable.