The Universal Liquid Level Controllers monitor and control a liquid level using a microchip processor by transmitting and receiving small signals from probe to probe through the liquid. The liquid medium only needs to have 0.000008 siemens (8 uS) of conductivity. Tap water for instance is about 0.000200 siemens (200uS).
Question: How do our controllers control a liquid level?
Answer: The 3-Probe controller uses the black and white probes cut at some distance apart determined by customer to maintain the desired liquid level. The controller uses one contact that energizes and de-energizes a solenoid valve (using municipal water) or for a relay coil to control a high current pump motor.
The models include low voltage (10 to 30vac/dc), or high voltage (120vac) for the electronics voltage and load voltages. The basic unit uses three probes to maintain the level and four or five probes for alarms like low level, high level and heater enable for a heater circuit.
The liquid level controllers will work in any liquid that contains at least 0.000008 Siemens/ sq cm (8 uS) or more of conductivity. Distilled water can be as low as 0 to 0.000005 Siemens/ sq cm (5uS). Our controllers will not work below 0.000008 Seimens.
More on conductivity of liquids....Conductivity Theory.
A list of some conductive liquids....Conductive Liquids.
Micro-Processor level monitoring and output control.
Conductive monitoring from probe to probe via liquid medium.
Sensitivity 0.000008 Seimens.
A variety of liquids can be controlled.
MOSFET electronic contacts no relays or moving parts.
Micro-amp transmit/ receive signal monitoring, no floats.
Operate with 10 to 30 volts AC/ DC or 120 AC.
Transient protected outputs.
Probes close to electronics.
All solid state operation.
Single package all in one design.
29 inch standard probe length.
6 feet of 18 AWG cable.
304 or optional 316 stainless steel probes.
Trouble free operation.
Power and Error LED indicator.
Tested temperature at -20C to +85C.
1 year warranty.
100 % customer satisfaction.