Hach POLYMETRON 8810

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Table 1 Microprocessor board

Terminal Description

X1 - X4

Relay configurations K5 - K8

• 2-3: Dry contact relay

• 1-2 and 3-4: 24 VDC

Serial interface

• 1-2: RS 232

• 2-3: RS 485

Table 2 Level detector and external commands (J1 - J8)

Terminal Use

J1 Start / Standby

J2 External sample

J3 Not used

J4 Conditioning solution

J5 Titration solution

J6 Calibration solution

J7 Chemical cleaning

J8 Sample

Table 3 Analog outputs (J9)

Terminal Use

1-2 Analog output 1

3-4 Analog output 2

5-6 Analog output 3

7-8 Analog output 4

9-10 Analog output 5

11-12 Analog output 6

13-14 Analog output 7

15-16 Analog output 8

Table 4 Serial interface (J10)

Terminal Use

1 TXD

RS 232 user configured with X5 2 RXD

3 GND

4, 5, 6, 7, 8 Not used

English 15

Hach POLYMETRON 8810 - Page 15