B&C Electronics pH 7687

The PH 6587 and PH 7687 belong to the latest series of instruments developed by B&C Electronics. These products are the result of more than 40 years of experience in the measurement and control of pH and ORP. The sensors and submersible probes in our catalog allow the visualization of the temperature value as well as the pH or ORP, making the instruments suitable for any type of application and installation.
FeaturesTechnical DataApplications

0.00 ÷ 14.00 pH
-2000 ÷ 2000 mV
-10.0 ÷ 110.0 °C, 14.0 ÷ 230.0 °F

The multi-line graphic display shows the values of the
measures and the messages which guide the user through
set-up, configuration and during normal operation.

There are dedicated keys to directly access zero and
sensitivity calibration as well as set point configuration.

Operating mode
The meters can operate in automatic, measure or simulated
mode so to facilitate start-up or maintenance.

Two filters software
The user can set two filters in order to obtain a stable reading
and a faster response to the variations of the measurement in
the process.

Two analog outputs
Can be addressed to any input and programmable 0/4 – 20
mA on two points of the scale. They allow PID control or
transmission of the measured values.

Two On/Off regulators
Independent and addressable to any input with
programmable set point on the scale.

PID output
During PID control through the analog output, the level of the
actuation is displayed.
The user can select an FM regulation (pulse frequency) or WM
(pulse width) addressed to the assigned relay.

The relay is dedicated to min/max values of the measures,
the excessive activation of relays and the presence of the
logic inputs.

Logic inputs
Two free voltage contacts can generate a hold or alarm

A relay is dedicated to an external device for the sensor selfcleaning.
This function is fully programmable through the
controllers’ software.

Universal power supply
From 85 to 264 Vac, 50/60 Hz.
The low voltage option allows to power the unit from 9 to
36 Vdc or from 12 to 24 Vac, 50/60 Hz.

Easy installation
All 6587 series of controllers have IP65 protection rating.
They are suitable for wall mounting, or for DIN rail and
handrail by means of optional accessories.
Series 7687 has an IP65 front panel and it is designed for
customers who prefer panel mounting.

Compatible and versatile
The analyzers are compatible with all B&C Electronics’ pH
(glass or antimony) and ORP sensors.The temperature measuring and compensation is done with
Pt100 or Pt1000 two or three wires probes.

Technical specifications

Inputs pH electrodes (glass or antimony)
 ORP electrodes
Pt100 / Pt1000
Zero ±2 pH, ±100 mV, ±5 °C, ±9 °F
Sensitivity 80 ÷ 110 % (70 ÷ 140 % antimony)
Resolution 0.01 pH, 1 mV, 0.1 °C/°F
Accuracy 0.2 %
Repeatability 0.1 %
Non-linearity 0.1 %
Operating temperature -10 ÷ 60 °C
Power supply: 85 ÷ 264 Vac – 50/60 Hz
Registered design 002564666-002 (PH 6587)
002564666-003 (PH 7687)


• Aquaculture
• Chemical industry
• Drinking water
• Electroplating
• Fertirrigation
• Food and beverage
• Paper and pulp
• Pharmaceutical
• Printing industry
• Swimming pools
• Textile industry
• Underground water
• Water treatment