Hanna Instruments HI7640-58, Instruction Manual

Page: 10 / 16

Wiring the Probe to the Controller 10
10. WIRING THE PROBE TO THE CONTROLLER
1. With the controller disconnected from power, run the probe cable through the conduit opening.
2. Connect the probe leads to the removable terminal connector marked PROBE. Follow the lead markings
(+) positive / (–) negative to ensure correct wiring position for output leads.
3. Carefully put the wired terminal connector into place on the board.
4. Position excess cable through cable gland before tightening the nut.
5. Remove the ground screw and hardware located below the PROBE connector and attach ground lead (
g
).
COMM
- B A +
IN1 IN2 A01 A02 A03 A04 PROBE
- B A +
PROBE
- B A +
A + B
—
Probe cabling color code
Marking Attached cable Patch cable * Functionality
– GREEN BLACK 0V
B WHITE WHITE RS485 D –
A YELLOW BLUE RS485 D+
+ BROWN RED 5V
g
GREEN-YELLOW Protective ground connection
* See Accessories section for cable ordering codes.
Note : Ensure wiring regulations are correctly followed when controller unit is part of a larger industrial installation.
11. CALIBRATION
HI510 controller allows two types of dissolved oxygen calibration procedures:
• Standard single or two-points calibration using water-saturated air or air-saturated water and a zero-
oxygen solution to verify that the probe is working correctly and establish a slope
• Process single-point calibration performed with the calibrated probe (two points) installed in the process.
Process calibration allows the user to adjust the measured dissolved oxygen value to match the value
determined with a reference device.