Model P821 Sensor

  • In-line or Submersible

  • 3/4" MNPT process fitting

  • Temperature Compensated

  • Detachable differential preamplifier

  • Solution Ground

  • Graphite filled Ryton® Housing

  • Magna-Flow® reference junction

  • Tuff Tip® pH electrode End

  • Self Cleaning

  • Compatible with most analysers

Specially designed for convenience of electrode replacement where minimal troubleshooting and maintenance downtime are of prime importance. It is suitable for virtually all applications where a high performance sensor is required, either in-line or submersible installation. The electrode features a detachable cable with an integral differential preamplifier which eliminates any ground loop problems. The preamplifier converts the high impedance signal into a stable, noise free signal. 

The sensor is housed in a chemically resistant graphite filled Ryton® body with Viton® O-rings. The graphite filled Ryton® body is used as a solution ground. The electrode tip is constructed in a unique Tuff Tip® guarded tip design with a Magna-Flow® peripheral ceramic reference junction. The Magna-Flow® reference junction provides longer life in harsh, dirty applications and in process solutions containing a high solid content. It is also superior in applications such as lime slurry waste treatment, paper machine head box, and pigment/dye applications. The reference does not require electrolyte replenishment during the life of the electrode. 
 
 ELECTRODE ASSEMBLIES 
Part Number Description Sensor pH range Temp range Pressure 
at 70°C
P821G2V01S-D6 6 pin amplifier connection with 3K temperature compensator. Requires cable with integral preamplifier. GX-2 0~12 0~120°C 100psig
P821G3V01S-D6 6 pin amplifier connection with 3K temperature compensator. Requires cable with integral preamplifier. GX-3 0~14 0~120°C 100psig
P821P2V12/33 To fit cable assembly without preamplifier. 3 wire Pt100 for temperature compensation. GX-2 0~12 0~120°C 100psig
P821P3V12/33 To fit cable assembly without preamplifier. 3 wire Pt100 for temperature compensation. GX-3 0~14 0~120°C 100psig
P821G9000S-D6 ORP electrode for 6 pin cable assembly with preamplifier. Pt N/A 0~120°C 100psig
Options (at extra cost) 
Moulded cable for P821P series electrodes. 
Teflon or wood reference junctions. 
Single ended preamplifier. 
Metric or BSP process fittings. 
Gold disc ORP sensor. 

CABLE ASSEMBLIES 
Part Number Description
CB821-010 Potted differential amplifier for P821G series electrodes - cable length 10ft.
CD821-010 Non amplified cable assembly for P821P series electrodes. Cable length 10ft with BNC connector for electrode and stripped and tinned leads for Pt100.
Other cable lengths and connectors available on request.