Thermo Scientific AquaSensors
™
AnalogPlus
™
Differential pH Sensor User Guide
7
2.2.
Compatible Analyzers and Controllers
All AnalogPlus pH sensors use the differential measurement technique to insure longer life and less signal
interference. Differential pH sensors also make it possible to have long cable runs. Sensor cables have
either 5 or 6 wires, depending on the type of analyzer that the sensor is to be used with. The wires are
designed for terminal block connection and each wire must be individually connected. All analyzers are
rated NEMA 4X for outdoor use as long as proper mounting and conduit practices are used.
AV88 Universal Analyzer
Thermo Fisher Scientific offers the AV88 Universal Analyzer. The analyzer can
be configured to measure with any AnalogPlus sensor. With the pH personality
module installed, AnalogPlus pH sensors with a temperature hookup code of “9”
in the part number can be used (EG: FP21A-
9-
D10). These sensors have 6
conductor cables while other versions of the sensor have 5 conductors. The
analyzer has a very intuitive menu system that makes it easy to navigate
through measurement, calibration, configuration and diagnostic display options.
Two current outputs, two relays, PID control, and optional digital host
communications are provided. Host communications make it possible to
integrate all sensor functions remotely with any computer system while allowing
local control through the AV88 keypad. Supported host communications
protocols include Modbus RTU, DeviceNet, Modbus TCP, Ethernet/IP,
CANopen and Profibus. The AV88 enclosure is rated for outdoor use and can
be mounted to a wall, a panel or a pipe. Input power options of 24 VDC and
Line Power (90 VAC to 240 VAC) are available with this Analzyer.
P99 pH/ORP Analyzer
Thermo Fisher Scientific offers the P99 pH/ORP Analyzer which
is compatible with all AnalogPlus pH and ORP sensors with a
temperature/hookup code of “8” in the part number (EG: FP21A-
8-
D10). It provides a large LCD display, password protected
menu access, 2 current outputs and 3 relays. It is compatible
with GLI/HACH P63/P53/P33/P3 analyzers and transmitters.
The P99 enclosure is rated for outdoor use and can be mounted
to a wall, a panel or a pipe.
Third Party Analyzers
AnalogPlus pH sensors with a temperature/hookup code of “7”
(EG: FP21A-
7
-D10) are compatible with AquaMetrix differential
pH analyzers. AnalogPlus pH sensors with a
temperature/hookup code of “8” work with our P99 analyzer or
GLI/HACH P63/P53/P33/P3 analyzers and transmitters.
Figure 2.1:
AV88 Universal
Analyzer
Figure 2.2:
P99 pH/ORP
Analyzer
