Replacement pH Meters
Replacement Redox Meters
Since 1982 we have supplied a range of different types of pH Meter and Redox meters to suit our customers' needs. These have been upgraded with developments in electronic components. Our top of the range controller featuring a state of the art 4 line display showing measured value, temperature, date and time with alarm outputs, isolated expandable current output, auto clean output as well as the usual control outputs. Things have come a long way from the original instruments with mechanical meter movements.
To follow are some of the pH controllers we have supplied over the years since the company started and the current replacement instrument, usually available from stock form our Stafford facility.
P7615 pH Meter
R7615 Redox Meter
P7615 Panel mounting pH Meter range 0 - 14.00 pH with 2 control relays and a 0 - 20 mA current output, power supply 115/230 VAC.
R7615 Panel mounting Redox Meter range 0 - 1000 mV with 2 control relays and a 0 - 20 mA current output, power supply 115/230 VAC.
pH and Redox Meter: Model SM41 & SM42
Model SM41 & SM42. Our very first pH/mV controller surface mounting with 2 control relays for on/off control of pumps or solenoid valves.
Manufactured early 1980s - it's doubtful if any are still in use.
Replacement pH Meter / Redox Meter
Replacement instrument Model LPH pH/mV controller or Model LDPH with proportional control for electronic dosing pumps.
pH and Redox Meter: Model 40/144B
Model 40/144B Panel mounting pH/mV controller with 2 control relays with optional time proportional control and 0 - 20 mA output.
Supplied 1982 / 83
Replacement pH Meter / Redox Meter
Replacement Redox Meter or pH Instrument pH Meter Model P7685 pH/mV controller which has selectable control for on/off, PFM or PWM and an isolated 0 -20 / 4-20 mA and out performs the original.
Meter Model P7685
Model 9142 Panel mounting pH/mV controller with 2 control relays and 0 - 20 mA output. Supplied 1983 / 84.
Replacement pH Meter / Redox Meter
Replacement instrument pH Meter: Model P7685 pH/mV controller which has selectable control for on/off, PFM or PWM and an isolated 0 - 20 / 4-20 mA and out performs the original.
Model 45B
Model 45B Surface mounting pH meter / redox meter with 2 control relays and 0 - 20 mA output. Supplied 1982 / 84.
Replacement pH / Redox Meter: Model LPH pH/mV controller or Model LDPH with proportional control for electronic dosing pumps.
Contronic Panel pH
Contronic Panel mounting pH/mV controller with 2 control relays with proportional control for electronic metering pumps and 0 - 20 mA output. Supplied 1984 / 86.
Replacement Redox Meter / pH Meter
Replacement instrument: Model P7685 pH/mV controller which has selectable control for on/off, PFM or PWM and an isolated 0 - 20 / 4-20 mA and out performs the original.
Aquatronic APPL2
Model Aquatronic APPL2. Our best selling pH/mV controller, surface mounting with 2 control relays for on/off control of pumps or solenoid valves. APPCI2 provided time proportional or PWM (Pulse width modulation) of solenoid valves and small motor driven pumps.
APPCF2 provided frequency or pulse frequency modulation for the control of electronic dosing pumps. Manufactured from 1984 to 1996, many are still in use providing good service.
Replacement Redox Meter / pH Meter
Replacement pH Meter / Redox Meter: Model P7685 pH/mV controller which has selectable control for on/off, PFM or PWM and an isolated 0 -20 / 4-20 mA out performs the original.
Aquatronic APWL2, APWCF2, APWCI2
Model Aquatronic APWL2, APWCF2, APWCI2 Surface mounting version of the APP range which are the same instruments in weatherproof enclosures.
Replacement instrument Model LPH pH/mV controller or Model LDPH with proportional control for electronic dosing pumps.
Lakewood Model 820/830
Lakewood Model 820/830 Panel/Surface mounting pH/mV controller with 2 control relays with optional PCBs for PFM, PWM and Isolated current output. Remote preamplifier to amplify the pH signal, excellent instrument made in the USA.
Supplied 1986 / 96.
Replacement Redox Meter / pH Meter
Replacement instrument Model P7685 pH/mV controller which has selectable control for on/off, PFM or PWM and an isolated 0-20 / 4-20 mA, optional Micro transmitter (preamplifier available to order).
Lakewood Model 720/1720
Lakewood Model 720/1720 Two wire pH transmitter in heavy duty die cast Ex rated case, one of Dr Bob Doenges best designs, non standard ATC required and special electrode. Supplied 1986 / 96.
Replacement pH Transmitter / Redox Transmitter
Replacement instrument for safe area use Model P3630W Two wire pH or Redox transmitter and BC7615 panel mounting pH controller for remote mounting up to 1km away from the transmitter.
For Hazardous Ex or zoned area please contact our sales office.
APT1 pH or mV
APT1 pH or mV two wire transmitter in weatherproof enclosure, superb little pH Transmitter or Redox Transmitter proved very reliable with many in use, fit and forget. Supplied 1990 / 98.
Replacement pH Meter / Redox Meter
Replacement pH instrument for safe area use Model P3630W Two wire pH or Redox transmitter and BC7615 panel mounting pH and Redox controller for remote mounting up to 1km away from the transmitter.