The Alpha pH 1000 controllers/transmitters combines consistent performance and sophisticated control functions with user-friendly features. Meters come with seven preset buffer values for quick, accurate auto-calibration; electrode offset function allows direct reading corrections without needing to remove electrode from the control system. Alarm delay and individual set-point hystereses in limit control mode prevent chattering, false alarms, and uncecessary down time.
For finer control, Alpha pH 1000 offers proportional pulse length control and proportional pulse frequency control, in addition to basic limit control.
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2-in-1 controllers/transmitters can be configured to measure either pH or OPR (mV or %)
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Auto-calibration with choice of NIST or USA buffer selection. Electrode slope and offset
is displayed after each successful calibration
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Symmetrical mode option for clear, uninterrupted pH readings in electronically noisy environment
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Antimony mode option for use with antimony electrodes in applications that involves corrosive Hydrofluoric Acid
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Option of Auto or Manual Temperature Compensation. Three-wire system compensates for cable-length resistance errors
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Galvanically-isolated, scaleable 0/4 to 20 mA output for high-quality output on peripheral devices
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Alpha pH 1000 limit/proportional controller also offer two additional features: wash function for
scheduled electrode wash, and alarm relay function to alert when measurement crosses
the set points
Applications
General: Useful
for any batch or on-line type application
that requires accurate pH or ORP control.
Water Purification/Treatment:
Use for batch and on-line control of incoming
process water, rinse water treatment, recirculating
system and waste water treatment.
Industrial:
Ideal for chemical processing, food processing.
aquarium, pharmaceutical, hydroponics and
waste control industries.
Regulatory:
Hook to recorder to document data for regulatory
compliance.
Specifications
Product
Specification
Description
pH
Range
-2.00 to 16.00 pH
Resolution
0.01 pH
Accuracy
±0.01 pH
ORP
Range
-1000 to 1000 mV / 0 to 100.0 %
Resolution
1 mV / 0.1 %
Accuracy
±1 mV / ±0.2 %
Temperature
Range
-9.9 to 125.0 ºC
Resolution
0.1 ºC
Accuracy
±0.5 ºC
Sensor
Pt100 / Pt1000 (jumper selectable); 2 or 3 wire
Compensation
Auto/manual
Set
Point And Controller Functions
Set point 1 (SP1) /
set point 2 (SP2)
0.00 to 14.00 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 / 1 to 10.0 %
Function (Switchable)
P control (pulse length/pulse frequency);
limit control
Adjustable Period With Pulse Length Controller
0.5 to 20 sec
Adjustable Period With Pulse Frequency Controller
60 to 120 pulse/min
Pickup/Dropout Delay
0 to 2000 sec
Contact Outputs
3 SPDT relays
Switching Voltage/
Current/Power
Max. 250 VAC / max. 3 A / max. 600 VA
Alarm
Functions
Function
(Switchable)
Steady or fleet (pulse)
Wash
Cycle
0.1 to 199.9 hr
Wash
Direction
1 to 1999 sec
Pickup
Delay
0 to 2000 sec
Switching
Voltage/ Current/Power
Max. 250 VAC / max. 3 A / max. 600 VA
Electrical
Data And Connections
Transmitter Function
0/4 to 20 mA scalable outputs for pH/ORP, galvanically isolated
Hold Function Switch
To freeze output current and deactivate control relays
Load
Max. 600 Ohm
pH/ORP Input
BNC (1012 impedance); asymmetrical/symmetrical
Connection Terminal
5-pole, 17-pole terminal, detachable blocks
Display
LCD
7 segments display with symbols for status information
Power Supply
Input
110 VAC
(jumper selectable) ;
48 to 62 Hz ; max. 7 VA
(For TSCTP1001)
220 VAC
(jumper selectable) ;
48 to 62 Hz ; max. 7 VA
(For TSCTP1002)
Main Fuse
Slow-blow 250 V / 100 mA
Pollution Degree
2
Transient Overvoltage Category
II
EMC Specifications
Emitted Interference
According to EN 50081-1
Immunity To Interference
According to EN 50082-1
Environmental
Conditions
Operating Temperature Range
-10 to 50 ºC
Max. Relative Humidity
80 % up to 31 ºC decreasing linearly to 50 %
at 40 ºC