Thermo Fisher Scientific Alpha pH 2000D - Manual (Page 28)

6.6 Current Output 1 sub-function
In this sub-function you set the current output range of the transmitter for pH or ORP values
.
2
2
3
3
4
4
5
5
SETUP
HOLD
SETUP
HOLD
SETUP
HOLD
SETUP
HOLD
SETUP
HOLD
pH pH
pH pH SETUP
HOLD
SETUP
HOLD
SETUP
HOLD
1
cur.1
SETUP
HOLD ENT
ENT ENT ENT
ENT
ENT ENT
ENT
1. Select the “CUR.1” sub-function, and then press the ENT key.
2. Selecting the output type: press the ▲ or ▼ key to select the desired output type: 0-20 mA or 4-20
mA. Press the ENT key to confirm your selection.
3. Setting the pH or ORP value at which the transmitter output will be 4 mA (or 0 mA): press the ▲
or ▼ key to set the pH or ORP value to be equivalent to 4 mA or 0 mA, respectively. Press the ENT key
to confirm your setting.
4. Setting the pH or ORP value at which the transmitter output will be 20 mA: press the ▲ or ▼ key
to set the pH or ORP value to be equivalent to 20 mA. Press the ENT key to confirm your setting.
5. Selecting out of range current: Press the ▲ or ▼ key to switch “CU22” on or off. If “CU22” is on, the
output signal will jump to 22 mA when the measured pH and ORP value is below or above the values set
in points 3 & 4 above. Press the ENT key to confirm your setting.
Note: the “CU22” setting (on/off) of current output 1 applies to current output 2 as well.
Continue with Setup mode procedures, or return to Measurement mode by pressing the ▲ and ▼ keys
simultaneously (escape).
- 23 -