Electro-Chemical Devices (ECD) HYDRA Ammonium - Manual (Page 20)

Page 12 HYDRA NH
4
+ -N
Graphical Display, 4-20 mA Outputs, Alarm Relays and Timers are all configured in the Setup Menu. Ion
selective electrodes have unique Iso-Potential points, the mV value for the concentration where changes
in temperature have no effect. This value is supplied with each specific ion electrode and must be
entered in the “isopot” entry line below. This provides the analyzer with the base point for temperature
compensation.
Screen Displayed Button Pressed
Ch1 Setup ◄ CALIBRATE ► (enter screen)
Plot 4-20 1
Sample .1 m MENU SELECT ▼
(the “4-20 1” indicates the displayed value, variable)
Plot 4-20 1
Sample .1 m MENU SELECT ▼
(the Sample time is 0.1 minutes, variable)
4mA1 .0 ppt OUTPUT SET-UP
20mA1 999.9 ppt ◄ CALIBRATE ► (enter 4mA line)
4mA1 .0 ppt
20mA1 999.9 ppt To adjust the value use the CALIBRATE ◄ or ► to move
cursor. Use the ▲or▼ to adjust the integer value.
4mA1 00.1 ppb
20mA1 999.9 ppt MENU SELECT ▼ (accept the Value)
4mA1 00.1 ppb
20mA1 999.9 ppt MENU SELECT ▼
4mA1 00.1 ppb
20mA1 999.9 ppt ◄ CALIBRATE ► (enter 20mA line)
4mA1 00.1 ppb
20mA1 999.9 ppt To adjust the value use the CALIBRATE ◄ or ► to move
cursor. Use the ▲or▼ to adjust the integer value.
4mA1 00.1 ppb
20mA1 100 ppm MENU SELECT ▼ (accept the Value)
4mA1 00.1 ppb
20mA1 100 ppm MENU SELECT ▼
(4-20 is set to 00.1 ppb to 1000 ppm)
2 On > .0 ppt RELAY SET-UP
2 Off < .0 ppt ◄ CALIBRATE ► (enter Relay Set Point)
2 On > .0 ppt
2 Off < .0 ppt To adjust the value use the CALIBRATE ◄ or ► to move
cursor. Use the ▲or▼ to adjust the integer value.
2 On > 10.00 ppm
2 Off < .0 ppt MENU SELECT ▼ (save the Value)
2 On > 100.0 ppm
2 Off < .0 ppt MENU SELECT ▼
2 On > 10.00 ppm
2 Off < .0 ppt ◄ CALIBRATE ► (enter Relay Hysteresis Point)
2 On > 10.00 ppm
2 Off < .0 ppt To adjust the value use the CALIBRATE ◄ or ► to move
cursor. Use the ▲or▼ to adjust the integer value.
2 On < 10.00 ppm
2 Off > 11.00 ppm MENU SELECT ▼ (save the Value) ** Whether the relay is a
High or Low Alarm is determined by the Off value **
2 On < 10.00 ppm (Low Alarm
2 Off > 11.00 ppm example)
2 On > 10.00 ppm (High Alarm
2 Off < 9.500 ppm example) MENU SELECT ▼(If the NH
4
+ -N drops below 10.0 ppm the
contact closes until it is higher than 11 ppm. If the Off value
is set to 9.5 ppm then the contact will switch to a High
Alarm, closing at 10.0 ppm and re-opening below 9.5 ppm.)