Products for USB Sensing and Control
Products for USB Sensing and Control


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

ASR2801-5M-BNC ORP Industrial Electrode

ID: 3556_0
Recommended for new designs: Phidgets Inc. is not the original manufacturer for this product, but we intend to sell it (or a similar replacement with a compatible form, fit and function) for as long as it is available from the supplier.

This industrial electrode measures the ORP of a solution and connects to a pH/ORP Adapter.


Quantity Available: 14

Qty Price
5 $105.60
10 $101.20

The 3556 is an economical combination electrode ideal for general industrial processes. It is well suited for testing pool water chlorination, ozone treatment (aquariums, water disinfection).

The electrode provides a fast, stable response and is ideal for prolonged ORP readings. The sealed, high polymer gel-filled design requires virtually no maintenance as there is no need to refill the reference chamber.

The outer tube is made of strong PPS plastic and is threaded (3/4" NPT pipe thread) for ease of installation.

The electrode comes with a 6 meter cable terminated by a BNC connector and a bottle of electrode solution.

Comes Packaged with

  • A small bottle of buffer solution

When you receive this sensor, fill the cap with buffer solution and ensure that it has no leaks.


This probe connects to the BNC connector on our pH interface boards. See the Connection & Compatibility tab for a complete list of options.

pH/ORP Interfaces

This ORP electrode creates a voltage differential that can be read by one of our pH/ORP interfaces:

Product Sensor Properties
Part Number Price Controlled By
pH/ORP Adapter
$30.00 Voltage Input (0-5V)
pH Phidget
$25.00 VINT

Product Specifications

Electrode Properties
Electrode Type Combination Single-Junction (ORP)
ORP Measurement Range ± 1.5 V DC
Electrode Response Time Max 10 s
Operating Temperature Min 0 °C
Operating Temperature Max 110 °C
Physical Properties
Exterior Tube Material PPS Plastic
Maximum Pressure 87 psi
Connector Type BNC
Rear Thread Type 3/4" Pipe Thread
Length 160 mm
Diameter 29.3 mm
Cable Length 6 m
Customs Information
Canadian HS Export Code 9027.89.00
American HTS Import Code 9027.89.45.30
Country of Origin CN (China)


Here is a complete list of the water quality probes we carry:

Product Electrode Properties Physical Properties
Part Number Price Electrode Type Operating Temperature Max Exterior Tube Material
ASP200-2-1M-BNC pH Lab Electrode
$25.00 Combination Single-Junction (pH) 80 °C Impact Resistant Plastic
PC2121-5M pH Industrial Electrode
$100.00 Combination Single-Junction (pH) 110 °C PPS Plastic
ASR2803-3-1M-BNC ORP Lab Electrode
$70.00 Combination Single-Junction (ORP) 80 °C Impact Resistant Plastic
ASR2801-5M-BNC ORP Industrial Electrode
$110.00 Combination Single-Junction (ORP) 110 °C PPS Plastic