Industrial pH Transmitters and pH probes



  • Isolated 4-20 ma output scalable to any 1 pH unit span
  • NEMA 4X Enclosure
  • Large LCD Screen
  • High Accuracy
  • Manual/Auto Temp. Compensation
  • Wide Power Supply Range
  • High Input Impedance

Industrial pH Transmitters Product Description

The industrial pH transmitter is a 2-wire 4-20 mA pH transmitter enclosed in a sealed NEMA-4 enclosure. The industrial pH transmitter has an LCD screen powered by 11 to 80 VDC. The pH transmitter’s span has selectable pH values from 1 to 14 pH units via an internal dip switch. The industrial pH transmitter uses BNC connections for the pH transmitter’s pH probe and has tinned leads for a 3-K Balco ATC temperature probe or simulation resistor (3K resistor included). NOTE: If you will be using the industrial pH transmitter to monitor liquid with a pH close to 7pH or if your water temperature is close to 77°F the 3-K Balco ATC temperature probe will not be needed.

Global Water’s GL500 pH Recorder adds recording capabilities to the industrial pH transmitters.  The GL500 pH Recorder connects to the pH transmitter’s 4-20mA output to record data.  In addition, Global Water offers the PC320 pH Controller to use the industrial pH transmitter’s output to control pumps or alarms.

Industrial pH Transmitters Specifications

Industrial pH Transmitter:
     Range: 0 to 14.00 pH
     Resolution: 0.01 pH
     Accuracy: 0.02pH + 1 digit
Span: Any 1 to 14 pH unit, selectable with internal DIP switch
Temp compensation: Auto 32 to 212 °F (0 to 100.0 °C) or manual using fixed resistor
Input impedance: >1012 ohms
Output: 4 to 20 mA
Operating temperature: -14 to 140 °F (-10 to 60 °C)
Connector: BNC
Power Source: 11 to 80 VDC
Dimensions: 4.92×2.95×3.94 inch (37.9×7.5×10.0 cm) (NEMA 4X case)

Industrial pH Transmitters Options

695pH Industrial pH Transmitter (PN# DO0000)
(pH sensor not included).  3K resistor included to simulate 77°F (25°C).

600P Industrial pH Probe (PN# DO0010)
Industrial pH probe: epoxy with BNC connector non-threaded.  Comes with a 3 ft cable.  Max Temp. 60° C.


WQ220-020B Industrial pH Probe w/threads (PN# HB0615)
Industrial pH sensor: CPVC with BNC connector, 3/4 inch MNPT, Flat surface, Double junction.  Comes with a 20 ft cable.


693-3K ATC pH transmitter temperature probe (PN# DO0020)
6 ft cable, Stainless Steel Probe, tinned leads.

BlueLine Gel Filled pH Electrodes (PN# Varies)
Robust gel filled pH electrodes for basic pH measurements.

BlueLine Refillable pH Electrodes (PN# Varies)
Robust refillable pH electrodes for basic pH measurements.

IoLine Tris Compatible pH Electrodes (PN# Varies)
Tris compatible glass pH electrodes without integrated temperature sensor for demanding pH measurements.

IoLine High Performance pH Electrodes (PN# Varies)
High performance glass pH electrodes for demanding pH measurements.


pH 4.01 Buffer, 250 ml bottle (PN# 108800)

pH 7.00 Buffer, 250 ml bottle (PN# 108802)

pH 10.00 Buffer, 250 ml bottle (PN# 108804)

Calibration and maintenance set (PN# 108823)
Includes 3 bottles with 250 ml each pH 4.01/ 7.00/ 10.00, and 1 bottle of 250 ml KCl solution 3 mol/l.


6309POT pH/ORP Controller

pH10A Handheld pH Meter

pH100CCA Handheld pH Meter Kit
Includes handheld pH meter, cable with attached pH/temperature probe, and hard sided case.

PHT-810 pH Tester

EC500 Handheld Waterproof pH/Conductivity Tester
Includes electrode, protective sensor cap, sample cup with cap, four 1.5V SR44W batteries, and a 48 inch (1.2m) neckstrap.

EC510 Handheld Waterproof pH/Conductivity Tester Kit
Includes an EC500 portable conductivity meter with sensor, 84uS, 1413uS, 12880uS calibration standards, pH buffer pouches (1 each of 4, 7, 10pH plus rinse solution), weighted base, protective sensor cap, 3 sample cups, four 1.5V SR44W batteries, carrying case, and a 48 inch (1.2m) neckstrap

2AA112 pH 3110 Portable Field pH meter w/case & accessories

Lab 850 Benchtop pH meter

ProLab 1000 Bench top pH meter

ProLab 3000 Laboratory pH meter

inoLab 7110 wastewater pH meter

WQ201 pH Sensor

WQL-pH pH Datalogger
Included: pH datalogger, PC-program WQL-Log, USB cable, Li battery, shackle, and hex wrench.

GL500 pH Recorder
pH recorder for sensor datalogging.  Includes Global Logger Software.  With weather proof enclosure and 12V battery.

PC320 pH Controller

WQ Water Quality Sensors