pH/ORP
Signet 2759 pH/ORP System Tester
The Signet 2759 pH/ORP Simulator is a battery-powered millivolt generator that simulates pH values of 4, 7, and 10, plus ORP values of ±700 mV. This device is useful as a troubleshooting aid and for general verifi cation of system operation. It is not a substitute for periodic system calibration with pH buffers or test solutions.
Accessory adapter cables (sold separately) enable the 2759 to connect directly to Signet 2760 preamplifi ers, or 2751 pH/ORP Smart Sensor Electronics. The adapters include a selector switch for pH (3K or PT1000 Temperature Compensation) or ORP simulation. The switch triggers automatic sensor-recognition software in Signet pH/ORP instrumentation.
Advantages:
• Battery-powered millivolt generator
• Simulates pH and ORP values
• High impedance input simulates preamplified signal
• Verifies system functionality
• Compatible with 2751 and 2760 preamplifiers
• Connects to all Signet instruments
• Verifies preamplifier or instrument electronics
Features:
A) Power OFF button
B) Output simulation buttons and indicators Simulate pH and ORP output at fi xed values: pH 4, pH 7, pH 10, -700 mV and +700 mV. Pressing any one of these buttons turns the 2759 on.
C) Low battery indicator
D) High Ω switch Adds 1000 MΩ resistance in series with output. Simulates high impedance of pH electrodes. Used to verify proper preamplifi er operation.
E) Adapter cable Use PN 3-2759.391 for use with the 2751 or 2760.
F) Mode selector switch Trigger automatic sensor recognition software in Signet pH/ORP instrumentation. The three-way toggle switch positions are:
• Top = 1K for a Signet 8900/9900/9950 instrument or 2751 Smart Sensor Electronics. Compatible with Pt1000 or 3KΩ temperature element.
• Middle = 10K for ORP simulation.
• Bottom = 3K for older Signet instruments. Requires a 3KΩ temperature compensation input.
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