GF Signet 4150 Turbidimeter - Manual (Page 18)

18 Signet 4150 Turbidimeter
OPTIONS: Extended: Response Time
The response time determines how quickly the 4150 responds to changes in the NTU measurement.
1 = approx. 5 seconds, 100 = approx. 500 s. Select a high value to avoid reading air and other anomalies.
Select a low value to react to rapid changes in the measurement.
Set the response time using the Ÿ and ź keys. Press the ENTER key to save the new setting.
OPTIONS: Extended: Display Resolution
The 4150 can display up to four decimal places. The factory setting is 0.01. Set the resolution by
pressing the Ÿ or ź keys. Press ENTER key to save the selection.
OPTIONS: Extended: LCD Backlight Brightness
The LCD backlight brightness can be adjusted. Ten levels are available. The default brightness is 8.
Set the brightness by pressing the Ÿ or ź keys. Press ENTER key to save the selection.
OPTIONS: Extended: Units
All instruments are shipped from the factory set in NTU mode. The 4150 can also display in FNU
(Formazin Nephelometric Units). Use the Ÿ and ź keys to change to FNU.
Press ENTER key to save the selection.
OPTIONS: Extended
OPTIONS: Extended: RS-485 Parameters
These three menus will only appear if the RS-485 is selected as the OUTPUT option.
Factory settings are:
OPTIONS: Extended: Ultrasonic Cleaning (3-4150-3, -4, -5, -6 models)
The default mode is On. Unit will stay in CLN mode unless turned off.
Use the Ÿ and ź keys to turn OFF.
Press the ENTER key to save the selection.
OPTIONS: Extended: Desiccant Alarm
Turn ON to activate the alarms when the humidity detector indicates that the internal environment is
close to the point where humidity could cause condensation. The 4 to 20 mA output will then fall to the
ERLV value you set in the 4 to 20 mA output settings in the OPTIONS menu (pg. 10, item 8).
OPTIONS: Extended: Adjust 4 mA
Applies a ± 10% offset from 4 mA. Units are in microamps (—A). 100 microamps = 0.1 mA.
Maximum adjustable limit is 3.6 mA to 4.4 mA (± 400 —A).
OPTIONS: Extended: Adjust 20 mA
Applies a ± 10% offset from 20 mA. Units are in microamps (—A). 100 microamps = 0.1 mA.
Maximum adjustable limit is 18 mA to 22 mA (± 2000 —A).
The EXTENDED menu contains many single-set options and will
always revert to OFF when you exit the menu.
Options: Extended Options (EXTD)
8 Bits
No (nOnE) Parity
1 Stop Bit
Make selections using the Ÿ and ź keys.
Press the ENTER key to save the selection