pH |
Range |
-2.00 to 16.00 pH |
Resolution |
0.01 pH |
Accuracy |
±0.01 pH |
ORP |
Range |
-1000 to 1000 mV / 0 to 100 % |
Resolution |
1 mV / 0.1 % |
Accuracy |
±1 mV / ±0.2 % |
Temperature |
Range |
-10.0 to 110 °C / 14.0 to 230.0 °F |
Resolution |
0.1 °C / 0.1 °F |
Accuracy |
±0.5 °C / ±1.0 °F |
Sensor |
NTC 300; 2 wire |
Compensation |
Auto/manual (independent process/CAL temperature) |
Set Point and Controller Functions |
Set Point 1 (SP1)/ Set Point 2 (SP2) |
-2.00 to 16.00 pH or -1000 to 1000 mV or
0 to 100 % |
Switching pH Hysteresis |
0.1 to 1 pH |
Switching ORP Hysteresis |
10 to 100 mV or 1 to 10.0 % |
Function (Switchable) |
P/PI control (pulse length/pulse frequency/proportional integral); limit control; off |
Adjustable Period with Pulse Length Controller |
0.5 to 20 sec |
Adjustable Period with Pulse Frequency Controller |
60 to 120 pulse/min |
Integral Action Time (IAT) |
0 to 999.9 min |
Pickup/Dropout Delay |
0 to 2000 sec |
Wash Cycle |
0.1 to 200.0 hr |
Wash Duration |
1 to 2000 sec |
Contact Outputs |
1 SPDT, 3 SPST relays |
Switching Voltage / Current / Power |
1/8 HP: at 125 VAC / max. 0.74 A / max. 93 VA
1/8 HP: at 250 VAC / max. 0.37 A / max. 93 VA |
Alarm Functions |
Function (Switchable) |
Steady or fleet (pulse) |
Pickup Delay |
0 to 2000 sec |
Switching Voltage / Current / Power |
1/8 HP: at 125 VAC / max. 0.74 A / max. 93 VA
1/8 HP: at 250 VAC / max. 0.37 A / max. 93 VA |
Alarm Functions |
Function (Switchable) |
Steady or fleet (pulse) |
Pickup Delay |
0 to 2000 sec |
Switching Voltage / Current / Power |
1/8 HP: at 125 VAC / max. 0.74 A / max. 93 VA
1/8 HP: at 250 VAC / max. 0.37 A / max. 93 VA |
Electrical Data and Connections |
Transmitter Function |
Two 0/4 to 20 mA scalable outputs for pH/ORP and temperature, galvanically isolated |
CU22 Function |
22 mA current output |
Isolated Output Voltage |
12 V ±0.5 V (max. 50 mA) |
Hold Function Switch |
To freeze output current and deactivate control relays |
Load |
Max. 600 Ohm |
pH / ORP Input |
2-pin terminal (Differential) |
Connection Terminal |
5-pin, 8-pin, 9-pin & 13-pin terminal, detachable blocks |
Display |
LCD |
UV coat, backlit 14 segments display with symbols for status information |
Backlight |
On/off selectable with four levels of brightness control |
Power Supply |
Input |
80 to 250 VAC/DC ; 50/60 Hz ; 10 VA |
Main Fuse |
315 mA time delay, 250 V,
Bussmann BK/GDC-315 mA |
Pollution Degree |
2 |
Transient Overvoltage Category |
II |
EMC Specifications |
Emitted Interference |
According to EN 61326 |
Immunity to Interference |
According to EN 61326 |
Environmental Conditions |
Operating Temperature Range |
0 to 40 °C |
Max. Relative Humidity |
80 % up to 31 °C decreasing linearly to 50 %
at 40 °C |
Mechanical Specifications |
Dimensions (WxHxD) |
144 x 144 x 110 mm |
Weight |
950 g (unit) / 1100 g (packed) |
Ingress Protection |
IP66 (NEMA 4X) |