Electro-Chemical Devices (ECD) HYDRA Ammonium - Manual (Page 22)

Page 14 HYDRA NH
4
+ -N
3.2.7 Status Menu
The Status menu displays the actual uncompensated millivolt value from the sensor, very handy
information for troubleshooting. The day and time, hours: minutes: seconds, are also displayed.
Screen Displayed Button Pressed
Ch1 Status ◄ CALIBRATE ► (enter screen)
Fri 09:11:28 MENU SELECT ▼
Input 364.2 mV CALIBRATE ▼ (return to Home Screen)
3.2.8 Configuration and Trim Menu
The Configure/Trim menu provides access to the menus used to assign parameters, define functions and
trim input and output signals. This group of menus should rarely be needed as the instrument was
configured at the factory before testing and shipment. The basic structure is as follows. See the “System
22 Configuration Manual” for details about these menus, available at www.ecdi.com.
Screen Displayed Button Pressed
Configure/Trim ◄ CALIBRATE ► (enter screen)
Passwords MENU SELECT ▼(allows menus to be password protected)
Default Display MENU SELECT ▼(defines Home Screen)
4-20 assign MENU SELECT ▼(Assigns parameter/function to mA output)
Manual Mode MENU SELECT ▼(Allows manual control of mA outputs)
Relay assign/Test MENU SELECT ▼(Assigns triggering parameter to a relay)
PID Assign MENU SELECT ▼(Assigns PID to a PV)
PWM Assign MENU SELECT ▼(Assigns Pulse Width Modulation to a PV)
Clock and timers MENU SELECT ▼(Sets Clock function, assigns Timers)
Logic Gates MENU SELECT ▼(assigns AND/OR gates)
Ion Species MENU SELECT ▼(Sets Ion Measured)
General MENU SELECT ▼( Not Used)
°C/°F & Temp Cal MENU SELECT ▼( allows temperature trim/cal, choose °C/°F)
4-20 Trim/Test MENU SELECT ▼(allows mA trim)
Millivolt Trim CALIBRATE ▼ (return to Home Screen)
3.3 OUTPUTS
The Standard C-22 HYDRA Analyzer has two 4-20 mA outputs. The default configuration has “mA 1”
configured for NH4-N, 4-20 mA = 00.1 ppb to 50 ppm and “mA 2” is configured for pH, 4-20 mA = 2-12
pH. To reconfigure the outputs see Section 3.2.6, Set-Up Menu, above.