User guide

2. Installation
The Signet 2750-7 pH Electronics amplify the output from the Signet 2724-00 pH Electrode and output a Digital (S
3
L) signal
to the Signet 8630 Chlorine Transmitter.
Features:
• Signet's patented DryLoc
®
connector provides quick assembly and a secure connection. Gold-plated contacts and an
O-ring seal ensure a waterproof and reliable interconnect to the sensor.
• Separate drive electronics from sensor make for easy sensor replacement without running new cable.
• DryLoc connectivity allows easy sensor removal for calibration.
Signet 2750-7 pH Electronics
3-2750-7.090 Rev C 05/11 English
English
CAUTION!
• Remove electrical power from the device or transmitter before
wiring input or output connections.
• Follow instructions carefully to avoid personal injury or damage
to the electronics.
1. Description
Do Not Use Lubricant or Sealing Tape on Threads.
Do Not Overtighten.
The bottom yellow nut is
not used when using the 2750-7
pH electronics with the Signet
4630 fl ow cell.
Signet 3-2727-00
Flat pH Electrode
Signet 4630 fl ow cell
Flow Tee Installation 4630 Flow Cell Installation
Lubricate O-rings with a non-petroleum based, viscous lubricant (grease) compatible with the system.
*3-2750-7.090*
CHEMICAL COMPATIBILITY WARNING
The retaining nuts of pH and ORP sensors are not designed for prolonged contact with aggressive substances. Strong acids,
caustic substances and solvents or their vapor may lead to failure of the retaining nut, ejection of the sensor and loss of the
process fl uid with possibly serious consequences, such as damage to equipment and serious personal injury. Retaining nuts
that may have been in contact with such substances, e.g. due to leakage or spilling, must be replaced.