Burkert Type 8202 is a compact device for measuring the pH value in clean, dirty, sulphide- or protein-containing liquids or for measuring the oxidation-reduction potential (ORP) value in clean, dirty, sulphide- or protein-containing liquids as well as liquids that have a low conductivity. Due to the measuring device’s design, installation and maintenance work is simplified.

The device is available in two variants:

• ELEMENT standard: Proposed with either three adjustable outputs (two digital outputs and one analogue output) or four adjustable outputs (two digital and two analogue), and can be equipped with a display. The display is required for start-up, configuration, and process value display.
• ELEMENT neutrino: A 2-wire device without a display, equipped either with a 4...20 mA current output or with a digital communication mode via IO-Link or büS (Bürkert system bus based on CANopen).

General Technical Data

The complete measurement device consists of a replaceable standard 120 mm pH or ORP probe (Type 8203 recommended) and the pH or ORP transmitter Type 8202. The process connection of both variants is made via a G 1 1/2" nut in PVC or PVDF.

Property	Description
Probe holder	PVDF, stainless steel 1.4571 (316Ti)
Compatibility	Any pipe fitted with Bürkert S022 adapter; 120 mm pH/ORP probe with S7/S8 connector
Pipe diameter	DN 25...DN 110 (DN 15...DN 20 under specific conditions)
Temperature sensor	Pt1000 integrated within the holder
Temperature compensation	Automatic, reference temperature 25 °C (77 °F)
Fluid pressure	Max. PN 16 (232 PSI)
Process connection	G 1 1/2" internal thread for use with Type S022 adapter
Ambient temperature	-10...+60 °C (+14...+140 °F)

ELEMENT Standard Variant

Property	Description
Cover material	Polycarbonate (PC), transparent
Housing material	Stainless steel 1.4404 (316L), PPS
pH measurement	-2...16 pH or -580...+580 mV (Deviation: ±0.02 pH or 0.5 mV)
ORP measurement	-2000...+2000 mV (Deviation: ±3 mV)
Temperature measurement	-20...+130 °C (Deviation: ±1 °C)
Operating voltage	14...36 V DC (3 outputs) or 12...36 V DC (4 outputs)
Digital output	Transistor: Adjustable as sourcing or sinking, open collector, Max. 700 mA
Analogue output	Current 4...20 mA adjustable as sourcing or sinking

ELEMENT Neutrino Variant

The device with digital communication is distinguished by a status indicator on the cover, and is offered with a housing in metal (metallic variant) or in plastic (all-plastic variant for corrosive environmental conditions).

Property	Description
Cover material	PPS
Housing material	Stainless steel 1.4404 (316L), PPS (metallic) or PPS (all-plastic)
pH measurement	0...14 pH (Deviation: ±0.05 pH)
ORP measurement	-2000...+2000 mV (Deviation: ±3 mV)
Temperature measurement	-20...+130 °C (Deviation: ±1 °C)
Operating voltage	12...36 V DC, filtered and regulated
Digital input/output	Through communication interface: büS/CANopen or IO-Link
Analogue output	Current of 4...20 mA (for analogue variant)

Performance Specifications

WARNING

The fluid temperature may be restricted by the probe used and the fitting used. If the specific temperature limits for the probe used and the temperature limits of the device are different, the narrower temperature limits are valid.

Installation Notes

The ELEMENT pH/ORP transmitter Type 8202 can be installed into any adapter with G 1 1/2" external threaded sensor connection by just fixing the union nut. Select the appropriate adapter, taking into account the specific requirements of the measuring device and the adapter material (temperature and pressure), and install it in a vertical position or with an angle of ± 75° max. relative to the vertical on a horizontal pipe.

TIP

Please ensure that the mounting location provides a continuous and complete immersion of the probe in the flow stream. The probe must be continuously immersed into the measuring fluid in order to protect it from drying out.

Approvals and Conformities

• Pressure Equipment Directive: Complying with article 4, paragraph 1 of 2014/68/EU directive.
• North America: UL Recognized for the USA and Canada (UL 61010-1, CAN/CSA-C22.2 No. 61010-1).
• Foods and beverages/Hygiene: FDA declaration of conformity (valid for specific variable codes).