Ezodo 4803P User manual

4803P pH/ORP 4-20mA Transmitter
Introduction:
Thank you for choosing this pH/ORP transmitter. This 1/16 DIN controller offers dual
backlight LCD display, high accuracy, and automatic or manual temperature compensation.
Specifications:
pH ORP Temp.
Range -2.00~16.00 pH -1999 ~ -200 mV
-199.9 ~ 499.9 mV
500 ~ 1999 mV
0~110 °C
Accuracy ±0.01+1 digit ±2+1 digit ±0.2+1 digit
Resolution 0.01 pH 0.1/1 mV 0.1 °C
Compensation ATC: 0~100 °C N/A
Temperature
Compensation ATC (0-100
o
C) via 30K Thermistor or MTC
Output 4-20mA isolated current output
Signal output load 500 Ω
Power supply 9V DC
Panel Cutout 1/16th DIN 1.81 x 1.81" (46 x 46mm)
Meter Dimensions 4.7 x 1.77 x 1.77" (105 x 45 x 45mm)
Accessories:
9V DC/AC(100~240V) adaptor
Adapter connection wire

Installation:
<Mounting the controller>
1. Make a 1.77 x 1.77" (45 x 45 mm) panel cutout (1/8" to 3/8" thickness)
2. Slide the controller into the cutout until the bezel is flush with the panel.
3. Slide the mounting bracket over the rear of the controller and press snugly against the
rear of the panel.
<Rear panel connection>

<Display and Buttons>
1. pH or ORP reading
2. Calibration mode
3. Calibration error indicator
4. Auto temperature compensation(ATC) or Manual temperature compensation(MTC)
5. Temperature reading and unit
6. unit of pH or ORP reading
1. Turn on/off the controller
2. Enter calibration mode
1. Switch pH and ORP mode
2. Press and hold to enter setting mode
3. In setting mode, press to store each setting
1. In measurement mode, adjust temperature value of MTC
2. In setting mode, adjust each parameter
1
2
3
6
5
4

Calibration:
<pH>
1. Make sure the sensor is pH electrode and switch mode to pH mode.
2. Dip the electrode and the temperature probe into the buffer solution pH 7.00. Stir gently
and wait until the reading is stable. Press and hold for 3 sec. to enter calibration
mode. The display will appear CAL and flashing 7.00. When the display stops flashing
and indicates “SA", then "End” while calibration ends, and will return to measurement
mode.
3. Rinse the electrode and the probe with clean water and wipe it dry. Dip the electrode
and the probe into the buffer solution pH 4.01 as previous steps.
4. After slope calibration, pH 4.01 or pH 10.01, the display will indicate the percentage of
slope (PTS) to show the status of the electrode. If the PTS is below 70% or above 130%,
the electrode must be replaced. A slope of 100% is ideal.
Note:
1. Calibration error indicator icon will appear, and “Err” instead of “SA”, if calibration fails.
2. When doing a 2 or 3 points calibration, Calibrate with buffer pH 7 first, and then follow
with buffer pH 4 or pH 10.
<pH Calibration type and temperature unit setting>
This controller has two pH calibration type: USA and NIST, and the calibration points are
following:
“USA”: 1.68, 4.01, 7.00, 10.01 and 12.45.
“NIST”: 1.68, 4.01, 6.86, 9.18 and 12.45.
To change calibration type and temperature unit:
1. Press and hold until a beep sound, and then press again.
2. The display will show the current pH calibration type. Press to change the type,
and then press to store the setting.
3. The display will then show the current temperature unit. Press to change the type,
and then press to store the setting.
<ORP>
Calibration is not necessary for ORP. However, it could be tested with specific ORP
standard solution to check whether the electrode is good.

4-20mA output setting:
< Programming the Setpoints and the Deadband >
1. Press to choose pH or ORP mode. The controller will store the settings for pH
and ORP separately.
2. Press and hold button until a beep sound, and then press and hold button
until a beep sound to enter 4-20mA output setting mode.
3. Use and to adjust settings, and use to store each setting.
4. The display will then automatically cycle through 3 settings: 4-20mA output on or off, the
corresponding reading of 4mA, corresponding reading of 20mA.
5. When setting the corresponding readings, press and hold to switch the value to
Positive or to Negative.
Choose pH or ORP
Enter setting mode
corresponding reading
of 4mA
corresponding reading
of 20mA
End
ON
OFF
4-20mA ON or OFF
pH: -2.00~16.00 pH
ORP: -999~+1999 mV

Other settings
<Back light>
1. Press and hold until a beep sound, release and then press and hold
again.
2. Press to choose On, OFF, and Auto:
On: back light is always on.
OFF: back light is always off.
Auto: back light will be on for 30 seconds while any button is pressed and then off.
<Reset the controller to default setting>
1. Press and hold until a beep sound, release and then press and hold
again until a beep sound.
2. Press to switch OFF to On, and then press to reset the controller to
default setting.