Hach Surface Scatter 6 User Manual

Catalog Number DOC09 Surface Scatter® 7 sc Turbidimeter USER MANUAL Edition 2 November 2006. The Surface Scatter 7 sc High Range Turbidimeter offers superior performance across a measurement range of 0 to 9999 NTU. The Hach Surface Scatter 7 sc Turbidimeter (SS7) is the original non-contact turbidimeter. This design minimizes sensitivity loss due to high turbidity samples; in fluids with high loads of suspended solids the design makes.

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47

Section 7

Troubleshooting

7.1 Error Codes

Errors are indicated by a flashing measurement value and a
flashing warning icon. Errors are defined in

Table 5

.

1. From the Main Menu, select SENSOR DIAG and confirm.

2. If multiple sensors are attached to the controller, choose

SELECT SENSOR>SS7 SETUP and confirm.

3. Select ERROR LIST and confirm. All active errors will display.

7.2 Warnings

Warnings are indicated by a flashing measurement value and a
flashing warning icon. Warnings are defined in

Table 6

.

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1. From the Main Menu, select SENSOR DIAG and confirm.

2. If multiple sensors are attached to the controller, choose

SELECT SENSOR>SS7 SETUP and confirm.

3. Select WARNING LIST and confirm. All active warnings

will display.

Table 5 Error codes

DIsplayed error

Definition

ADC FAIL

The ADC has failed. Try cycling power. If cycling power does not work, replace the detector
assembly (Cat. No. 71221-00).

LAMP FAIL

The light source has failed. See

section 6.4.1 on page 40

for lamp replacement instructions.

FLASH FAIL

Datalog and event log will not work.

Table 6 Warning Codes

Warning

Number

Displayed Warning

Definition/Resolution

1

DARK WARNING

Dark reading detects too much light. Close the SS7 sc enclosure and perform
ZERO ELECTRONICS (under the CALIBRATION menu).

2

TEMP WARNING

Sensor head internal temperature is higher than specified. Contact the
Technical Support Department. (> 70 °C)

3

DATA LOG FULL

Sensor data log is full. No additional data will be logged until sensor log is
downloaded into controller memory.

4

EVENT LOG FULL

Manual

Sensor data log is full. No additional data will be logged until sensor log is
downloaded into controller memory.

5

5 VOLT WARN

Monitored voltage is outside the range of 4.5–5.5 V.

6

VIN WARN

Monitored instrument input voltage from sc100 is outside the range of
9.08–14.3 V. Check cables. Make sure only one SS7 sc is connected to sc100
and if any other probe is connected it can only draw 4 watts maximum.

7

LAMP VOLT WARN

Monitored voltage is outside the range of 3.96–4.48 V.

8

LAMP CURR WARN

Monitored current is outside the range of 1.67–2.75 Amps.

9

OUTPUT MODE WARN

Activated when the sensor is not in normal measurement mode (such as when
in calibration or verification mode).

10

AC UPDATE FAIL

The application code update failed.

11

EXT FLASH FAIL

External copy of the application code has failed. Self recovery should occur.

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44

Maintenance

6.4.3 Detector assembly replacement

The detector assembly, listed as a replacement item in

section 8.1

on page 51

, is a sealed unit that is replaced entirely (

Figure 20

).

1. Write down the controller setup for all analog outputs and/or

relays used with the SS7 sc.

Hach Surface Scatter 6 User Manual

2. Turn off the controller and disconnect it from power.

3. Disconnect the detector cable from the controller. Unscrew the

nut (

Figure 20

, item

8

) and remove it from the disconnected

detector cable.

Hach Surface Scatter 6 Manual

Hach surface scatter 6 user manual

4. Open the SS7 sc enclosure door. Using a blunt object (¼-inch

diameter or less, e. g. the blunt end of a pen) push on the
bushing from the inside of the enclosure until it is free of the
strain relief and clamping fingers. Remove the grommet from
the detector cable.

5. Pull the detector cable through the strain relief. Open the cable

clamps (

Figure 20

, item

3

) and remove the cable.

Figure 19 Light source assembly

1

Shield assembly (Cat. No. 45299-00)

10 Spacer, light source (Cat. No. 45039-00)

2

Wavy washer (2x) (Cat. No. 45042-00)

11 Gasket (Cat. No. 45033-00)

3

Hach Surface Scatter 7 Calibration

Medium aperture (Cat. No. 45044-00)

Surface Scatter 7 Sc Turbidimeter

12 End plate (Cat. No. 45032-00)

4

Large aperture (Cat. No. 45045-00)

13 Body (Cat. No. 45027-00)

Hach Surface Scatter 6 Turbidimeter

5

Retaining ring (Cat. No. 45041-00)

14 Large spacer (Cat. No. 45037-00)

6

Lens holder (Cat. No. 45040-00)

15 Small lens (Cat. No. 31465-00)

7

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Small aperture (Cat. No. 45043-00)

16 Small spacer (4x) (Cat. No. 45038-00)

8

Large lens (2x) (Cat. No. 44114-00)

17 Screws (8x) (Cat. No. 5584-11)

9

Medium spacer (Cat. No. 45036-00)

Surface Scatter 7

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Hach Surface Scatter 6

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