Hach-Lange CLT10 sc - Manual (Page 5)

Two analyzer configurations are available: a Grab Sample option (without pH sensor) and a pH
option. The Grab Sample option includes the mounting panel, the chlorine sensor and flow cell, a pH
flow cell without sensor, a flow sensor, the digital gateway and the controller. The pH option includes
these items plus a pH sensor.
A flow control valve regulates the sample flow. A constant flow rate of 30-50 L/h is recommended for
correct sensor operation. The optimal flow rate is 40 L/hour. A single LED on the flow sensor shows if
the sample flow rate is sufficient. If the LED is not on, the flow rate must be adjusted until the LED is
on. The exact flow rate is not important as long as the LED is on, but the flow must stay constant
within the specifications.
Figure 1 System overview
1 Controller 7 Sample in
2 Gateway 8 Valve, shutoff (customer-supplied)
3 Chlorine sensor cable 9 Chlorine flow cell
4 pH sensor (optional) 10 Flow sensor cable
5 Sample drain 11 Chlorine sensor
6 pH flow cell
English 5