Multifunction Chemistry Controllers




The same controller can actuate equipment based on pH or oxidation reduction potential (ORP). Using two SPDT (single pole, double throw) relays, these controllers can turn pumps, valves, and other equipment on or off when a reading reaches the actuation point. They also send output signals to a PLC or other receiving device to record data and control equipment. Automatic temperature compensation standardizes readings at 77° F to prevent inaccurate results in fluctuating temperatures. These controllers are often used for water treatment, electroplating, and chemical processing.
They require a pH or ORP sensor (sold separately).
Controllers with an LED display are more visible in low-light conditions than those with an LCD display.
Controllers for washdown environments are rated IP65 for protection against low-pressure washdowns and dust.
Controllers | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
pH | Oxidation Reduction Potential (ORP) | pH Sensors | ORP Sensors | |||||||||||||||||
No. of Control Relays | Switch Industry Designation | Mechanical Relay Switching Current @ Voltage | Analog Output Current | Range | Accuracy | Range | Accuracy | Input Voltage | Mount Type | DIN Trade Size | Ht. | Wd. | Dp. | Environmental Rating | Each | Each | Each | |||
LCD Display | ||||||||||||||||||||
2 | SPDT | 5 A @ 120 V AC 2.5 A @ 240 V AC | 4-20 mA | 0.0 to 14.0 pH | ±0.05 pH | -1,999 to 1,999 mV | ±0.5% | 120V AC 240V AC | Panel | 1/4 | 3 3/4" | 3 3/4" | 4 3/4" | __ | 00000000 | 0000000 | 000000000 | 0000000 | 000000000 | 0000000 |
LCD Display—For Washdown Environment | ||||||||||||||||||||
2 | SPDT | 5 A @ 120 V AC 2.5 A @ 240 V AC | 4-20 mA | -2.0 to 16.0 pH | ±0.17 pH | -2,500 to 2,500 mV | ±0.1% | 120V AC 240V AC | Panel | 1/4 | 3 3/4" | 3 3/4" | 6 5/8" | IP65 | 000000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 |
LED Display | ||||||||||||||||||||
2 | SPDT | 5 A @ 120 V AC 2.5 A @ 240 V AC | 4-20 mA | 0.0 to 14.0 pH | ±0.05 pH | -1,999 to 1,999 mV | ±0.5% | 120V AC 240V AC | Panel | 1/4 | 3 3/4" | 3 3/4" | 4 3/4" | __ | 00000000 | 000000 | 000000000 | 000000 | 000000000 | 000000 |
Conductivity Controllers


Turn pumps, mixers, valves, and other equipment on or off based on the conductivity of a solution. These controllers compare input from a sensor (sold separately) to a programmed actuation point and react when the reading reaches the actuation point. They’re often used in water treatment and electroplating. Automatic temperature compensation standardizes readings at 77° F to prevent inaccurate results in fluctuating temperatures.
Controllers with mechanical relay output directly turn equipment on or off with two SPDT (single pole, double throw) relays.
Controllers with analog output send 4-20mA signals to a PLC or other receiving device (not included) to record data and control equipment.
Controllers | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Conductivity | Sensors | ||||||||||||||
No. of Control Relays | Switch Industry Designation | Range | Accuracy | Actuation Points | Actuation Tolerance | Input Voltage | Ht. | Wd. | Dp. | Mounting Location | DIN Trade Size | Each | Each | ||
LCD Display | |||||||||||||||
2 | SPDT | 0 to 2.000 µS 2.000 µS to 20.000 µS 20.000 µS to 200.000 µS 200.000 uS to 2,000.000 uS 2.000 mS to 20.000 mS | ±0.5% Full Scale ±1 Digit | 2 | 0 to 0.2 µS 0 to 2 µS 0 to 20 µS 0 to 200 µS 0 to 2 mS | 100-240V AC | 1 3/4" | 3 3/4" | 4 3/4" | Panel, Wall | 1/8 | 00000000 | 0000000 | 000000000 | 0000000 |
Controllers | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Conductivity | Sensors | |||||||||||||
Output Current | Range | Accuracy | Actuation Points | Actuation Tolerance | Input Voltage | Ht. | Wd. | Dp. | Mounting Location | DIN Trade Size | Each | Each | ||
LCD Display | ||||||||||||||
4-20mA | 0 to 2.000 µS 2.000 µS to 20.000 µS 20.000 µS to 200.000 µS 200.000 uS to 2,000.000 uS 2.000 mS to 20.000 mS | ±0.5% Full Scale ±1 Digit | 2 | 0 to 0.2 µS 0 to 2 µS 0 to 20 µS 0 to 200 µS 0 to 2 mS | 100-240V AC | 1 3/4" | 3 3/4" | 4 3/4" | Panel, Wall | 1/8 | 000000000 | 0000000 | 000000000 | 0000000 |