Skip to Main Content
  • Instrumart
Instrumart logo
  • Products
  • Brands
  • Applications
  • Lab
  • Blog
  • Account
  • Email Us
  • 1-800-884-4967
  • What can we help you find?

    Can’t find what you’re looking for? Contact one of our engineers today. We’re open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
    • 1-800-884-4967
    • Email Us
    • Live Chat

Instrumart will be having an all company meeting from 9AM to 10AM Eastern time today. 

Phones will be off during this time, please feel free to leave a message, email us at sales@instrumart.com, or call back after 10AM. 

  1. Water Quality
  2. pH Meters

GF Signet 5700 pH/ORP Monitor

ProPoint pH/ORP monitor .

GF Signet 5700 pH/ORP Monitor
GF Signet 5700 pH/ORP Monitor
Retired products cannot be ordered
The GF Signet 9900 Transmitter is the recommended replacement

View Company Reviewsby Trustpilot
Part Number
  • 3-5700
Manufactured
  • By Georg Fischer / GF Signet
Includes
  • FREE Ground Shipping on orders of $1,000 or more
  • FREE Lifetime Tech Support
Questions?
Call 1-800-884-4967 or Email Us.
Open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
Trustpilot

Overview

Features

  • Accuracy: ±0.1% of scale
  • Displays pH/temp/mV or ORP/mV
  • EasyCal simplifies routine calibration
  • Intuitive software design
  • Scaleable 4 to 20 mA output internally powered
  • Two programmable relays
  • Dual proportional control capability
  • Non-volatile memory

Description

The GF Signet 5700 pH/ORP Monitor is a versatile and intelligent instrument that recognizes the type of sensor connected, either pH or ORP, then automatically sets itself for the corresponding display and functionality.

During EasyCal operation, the GF Signet 5700 pH/ORP Monitor automatically recognizes standard buffers/test solutions, thereby shortening and simplifying routine calibration procedures. Two programmable relays and one scaleable 4 to 20 mA output are included with the GF Signet 5700 pH/ORP Monitor, and the four-button keypad arrangement with intuitive software design is very user-friendly. GF Signet 5700 pH/ORP Monitors require 12 to 24 Volts, AC or DC, and can be used with many GF Signet pH/ORP electrodes and preamplifiers, or with electrodes from other manufacturers by using the 2721 Preamplifier. Several useful accessories are available to the GF Signet 5700 pH/ORP Monitor, including the optional splashproof rear cover kit.

Applications for the GF Signet 5700 pH/ORP Monitor

  • Water & Wastewater Treatment
  • Neutralization
  • Scrubber Control
  • Effluent Monitoring
  • Surface Finishing
  • Heavy Metal Removal and Recovery
  • Toxics Destruction
  • Sanitization Systems
  • Pool & Spa Control
  • Aquatic Animal Life Support Systems
  • Process Control

System Compatibility

The GF Signet 5700 pH/ORP Monitor is compatible with a wide variety of GF Signet components. Please click here to view typical system configurations. If you have any questions about your particular installation, please contact us.

Documents

Documents

  • GF Signet 5700 pH/ORP Monitor Data Sheet PDF (737 KB)
  • GF Signet 5700 pH Manual PDF (994 KB)
  • GF Signet 5700 ORP Manual PDF (875 KB)
  • GF Signet Analytical Component Compatibility Chart PDF (103 KB)
  • GF Signet pH/ORP Technical Reference (216 KB)

Accessories

GF Signet 2774-2777 pH and ORP Electrodes
GF Signet 2774-2777 pH and ORP Electrodes

pH and ORP electrodes with DryLoc connector with gold-plated contacts featuring a PTFE double reference junction.

Starting at $574.20
GF Signet 3719 pH/ORP Wet-Tap Assembly
GF Signet 3719 pH/ORP Wet-Tap Assembly

pH/ORP wet-tap assembly allows electrode installation without process shutdown.

Starting at $1,325.70
GF Signet 2759 pH/ORP System Tester
GF Signet 2759 pH/ORP System Tester

Battery-powered millivolt generator simulates pH values for trouble-shooting and system verification.

Starting at $638.10
GF Signet Installation Fittings
GF Signet Installation Fittings

Fittings for securing insertion style flow sensors with different styles, models & materials to suit a variety of applications.

Some Models in Stock
Starting at $295.20
GF Signet 200 Retrofit Adapter
GF Signet 200 Retrofit Adapter

1/4-DIN retrofit adapter.

$164.00 $147.60
GF Signet Surface Mounting Bracket
GF Signet Surface Mounting Bracket

Mounting Bracket.

$60.00 $54.00
GF Signet Heavy Duty Wall Mount Bracket
GF Signet Heavy Duty Wall Mount Bracket

Heavy duty 1/4 DIN wall mount bracket (panel mount only).

Starting at $106.20
GF Signet Liquid Tight Connector Kit
GF Signet Liquid Tight Connector Kit

Liquid Tight Connector Kit, NPT (1 pc.).

Select options for pricing
GF Signet 2724-2726 pH and ORP Electrodes
GF Signet 2724-2726 pH and ORP Electrodes

DryLoc connector with corrosion-resistant gold-plated contacts, connects to the 2760 preamplifier or the 2750/1 sensor electronics.

Some Models in Stock
Starting at $390.60
GF Signet Accessory Kit
GF Signet Accessory Kit

Wall Mount Accessory for 9900.

$312.00 $280.80
GF Signet 2760 pH/ORP Preamplifier
GF Signet 2760 pH/ORP Preamplifier

Submersible or in-line mount connector or preamplifier featuring DryLoc connectors, available with NPT threads.

Some Models in Stock
Starting at $640.00

Need Help? Call a Flow engineer at 1-800-884-4967

We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET

Mathias H. headshot Mathias H.
Senior Applications Engineer
15 years at Instrumart
Martin K. headshot Martin K.
Applications Engineer
Lou P. headshot Lou P.
Senior Applications Engineer
28 years at Instrumart
Jason D. headshot Jason D.
Senior Applications Engineer
22 years at Instrumart
MaryKate R. headshot MaryKate R.
Applications Engineer
4 years at Instrumart
Patrick M. headshot Patrick M.
Applications Engineer
3 years at Instrumart
Dan R. headshot Dan R.
Applications Engineer
4 years at Instrumart
Mathias H. headshot Mathias H.
Senior Applications Engineer
15 years at Instrumart
Martin K. headshot Martin K.
Applications Engineer
Lou P. headshot Lou P.
Senior Applications Engineer
28 years at Instrumart
Jason D. headshot Jason D.
Senior Applications Engineer
22 years at Instrumart
MaryKate R. headshot MaryKate R.
Applications Engineer
4 years at Instrumart
Patrick M. headshot Patrick M.
Applications Engineer
3 years at Instrumart
Dan R. headshot Dan R.
Applications Engineer
4 years at Instrumart
Mathias H. headshot Mathias H.
Senior Applications Engineer
15 years at Instrumart

Recently Viewed

GF Signet 5700 pH/ORP Monitor
GF Signet 5700 pH/ORP Monitor
United States Canada Mexico
Shop
Products
Brands
Applications
Support
Customer Service
Ask a Question
Live Chat
Track Order
Fraud Prevention
Financing
Our Company
Blog
About Us
Contact Us
Jobs
Travel Information
Our Team
Privacy Policy
Terms and Conditions of Sale
Terms and Conditions of Purchase
Accessibility Statement
Connect
1-800-884-4967
sales@instrumart.com
Instrumart
35 Green Mountain Dr
S Burlington, VT 05403 US
Mo-Th 8:00am to 5:30pm ET
Fr 8:00am to 5:00pm ET
Join Us on Facebook
Follow Us on X

Instrumart is a member of a family of industrial stores

Instrumart Compressor World Pump World BioPharm World Filtration World Motion World Qualitrol Engineered Solutions Wholesale Air Pipe
© Instrumart 2025

Family of Industrial Stores

Welcome to our family of stores, your go-to source for a wide selection of commercial and industrial products in the flow control and automation sectors. Each store features a curated range of specialized industrial solutions, with many items designed to complement each other, ensuring you can find everything you need for your specific application. Explore the stores below to discover our extensive product offerings for your business needs.

  • Instrumart

    Shop Industrial and Laboratory Instruments.

    Shop Now!
  • Compressor World

    Shop Compressed Air Equipment.

    Shop Now!
  • Pump World

    Shop Industrial, Water, and Waste Water Pumps.

    Shop Now!
  • BioPharm World

    Shop Sanitary Process Solutions and Products.

    Shop Now!
  • Filtration World

    Shop Industrial Filters.

    Shop Now!
  • Motion World

    Shop Motion Control and Process Automation Systems.

    Shop Now!
  • Qualitrol

    Shop Remanufactured or Repair Automation Products.

    Shop Now!
  • Engineered Solutions

    Shop Custom Engineered and Manufactured Systems.

    Shop Now!
  • Wholesale Air Pipe

    Shop Air Piping.

    Shop Now!