Product Details

Alpha pH2000 Wall Mount / Panel Mount pH/ORP Controller / Transmitter



Product Features


:: Symmetrical Mode Operation eliminates electronic noise problems when used with solution ground

:: Backlit Display offers reading in low-light conditions

:: Universal Power Supply Input from 85 to 250 VAC/DC allows use at multiple sites and withstands voltage fluctuations

:: Rugged NEMA 4X housing protects controller from the elements and dirty industrial applications

:: Two Level Password Protection prevents unauthorized tampering with settings

:: 0 to 2000 Second Time Delay Adjustment on control and alarm delays

:: Hold Relay for use with float switches/flow switches and other controllers as a failsafe function

:: Two Galvanically Isolated Scaleable 0-20/4-20 mA Outputs for pH/ORP and temperature

:: Wash Contact Relay controls electrodes cleaning systems at desired duration and frequency

:: Choice of Glass or Antimony Electrode for general purpose or hydrofluoric acid applications

:: Adjustable Hysteresis (Dead Band) prevents rapid contact switching near set point

:: Non-Volatile Memory retains all stored parameters and calibration data even if power fails

:: Large Dual Display shows pH (or ORP) with temperature simultaneously - features clear multiple icons, set points, and status messages

:: Choice of Temperature Sensor Pt100/Pt1000 with 2-wire or 3-wire temperature input selection

:: Easy Installation and Wiring with detachable plug-in connectors

:: Panel-mounted version is also available




Product Specification


pH Range

-2.00 to 16.00 pH

Resolution & Accuracy

0.01 pH & ±0.01 pH

mV Range

-1000 to 1000 mV / 0 to 100% (for -100 to 100 mV)

Resolution & Accuracy

1 mV / 0.1% & ±1 mV / ±0.2%

Temperature Range

-10.0 to 110 °C (14.0 to 230.0 °F)

Resolution & Relative Accuracy

0.1 °C / °F &
±0.5 °C / ±1.0 °F

Temperature Sensor

Pt100/ Pt1000 (jumper selectable); 2 or 3 wire

Temperature Compensation

Auto / Manual
(Reference at 25°C)

Set Point and Controller Functions

Integral Time

0 to 999.9 minutes

Switching pH Hysteresis

0.1 to 1 pH

Function (Switchable)

P/PI control (Pulse Length / Pulse Frequency);
Limit Control; Off

Adjustable Period with Pulse Length Controller

0.5 to 20 seconds

Adjustable Period with Pulse Frequency Controller

60 to 120 pulses/min

Pickup / Dropout Delay

0 to 2000 seconds

Wash Cycle

0.1 to 200.0 hours

Wash Duration

1 to 2000 seconds

Contact Outputs, Controller

1 SPDT, 3 SPST relays

Switching Voltage / Current / Power

Max 250 VAC / Max 3A / Max 600VA

Alarm Functions

Function (Switchable)

Latching / pulse

Pickup Delay

0 to 2000 seconds



UV coat, backlit 14 segments display with symbols for status information


On/Off selectable with four levels of brightness control

Electromagnetic Compliance (EMC) Specifications

Emitted Interference

According to EN 61326

Immunity to Interference

According to EN 61326

Environmental Conditions

Ambient Temperature Operating Range

0 to 40 °C

Maximum Relative Humidity

80% up to 31 °C decreasing linearly to 50%
at 40 °C

Power Supply


80 to 250 VAC/DC 50/60 Hz Approx. 10 VA

Main Fuse

250 mA, Anti-surge, S504 BUSSMAN

Pollution Degree


Transient Overvoltage Category


Electrical Data and Connections

Transmitter Function

Two 0/4 to 20 mA scalable outputs for pH/ORP and temperature, galvanically isolated

CU 22 Function

22 mA current output

Isolated Output Voltage

+12V ±0.5 V (Max 50 mA)

Hold Function Switch

To freeze output current and deactivate control relays


Max 600 W

pH Input

BNC (1012 impedance); Asymmetrical/ Symmetrical

Connection Terminal
(Wall Mount)

3-pin, 8-pin, 9-pin and 13-pin terminal, detachable blocks

Connection Terminal
(Panel Mount)

3-pin, 9-pin and 19-pin terminal, detachable blocks

Mechanical Specifications

Dimensions (W x H x D)


144 x 144 x 110 mm
96 X 96 X 175 mm



745g (Unit) / 1100g (Packed)
950g (Unit) / 1100g (Packed)

Environmental Rating


IP66 (NEMA 4X)
IP54 (front panel)


Ordering Information


Order No.


TSPHCTP2000W Alpha pH2000 pH/ORP Analyser with 4-20 mA Output and 85-250 VAC/DC (Walll-mount) (Unit Only)
TSPHCTP2000P Alpha pH2000 pH/ORP Analyser with 4-20 mA Output and 85-250 VAC/DC (Panel-mount) (Unit Only)


Download Brochure

Alpha 2000 Series


Related Accessories

pH ORP Process Electrodes
Calibration Solutions

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