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Bukit Jambul,
11900 Bayan Lepas,
Penang, Malaysia.

Mr Kwang (General Manager)
+6016-422 8644

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Chong CW (Sales Manager)
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Glenys Teoh (Sales Manager)

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Sarawak, Malaysia.

Clement Lau (Sales Engineer)

ELSO Technologies Pte Ltd
Singapore Branch

1 Coleman Street
#10-06 The Adelphi
179803 Singapore.

Chew Peng Seng  (Sales Manager)
+65 9663 8176

Thermo Scientific Alpha pH 2000 Wall Mount - 01X275374

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Thermo Scientific Alpha pH 2000 Wall Mount - 01X275374 Controller Transmitter Cole-Parmer

Product Features

Built for the rugged industrial environment, the Alpha pH 2000 transmitter comes with an option for symmetrical mode of operation,
making it ideal for electrically noisy environments.
IP65 NEMA 4X casing is weatherproof and corrosion-resistant, protecting meter against harsh elements.

The Alpha pH 2000 is user-friendly and intuitive: controller alerts when meter or electrode requires maintenance, and provides trouble-shooting prompts in plain language.

:: Wide pH range of -2.00 to 16.00 pH at two-decimal accuracy
:: ORP mode measures in mV or % concentration, with independent calibration modes
:: Quick, easy push-button calibration with auto-buffer recognition. Meter displays electrode status after each calibration
:: Accepts Antimony electrodes – useful in applications involving Hydrofluoric (HF) Acid
:: Control and measure pH and ORP simultaneously with master-slave operation by placing two controllers side by side


Asymmetrical mode works well in environments with where there is little or no electrical noise.
When there is electrical noise, the noise acts as a common signal and is picked up by both the pH and the reference electrodes.
However, since the reference electrode is grounded to the ground potential of the amplifier, electrical noise will be present only on the pH electrode.
This noise is amplified along with the pH signal, which causes reading fluctuations in an electrically noisy atmosphere.
Electrical noise from a DC source (as in an electroplating tank) will typically result in stable but incorrect values.


Symmetrical mode avoids grounding the reference electrode by reconfiguring the input to a floating differential mode.
The electrical noise appears equally on the pH and reference electrodes, and is therefore rejected by the operational amplifier.

The Alpha pH 2000 transmitter offers an option for Symmetrical Mode of Operation.
To take advantage of Symmetrical operation, you must have an electrode with a solution ground (potential matching) pin.
If your electrode does not have a solution ground, be sure to set the controller to Asymmetrical mode.



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.


Product Specification

Range -2.00 to 16.00 pH
Resolution 0.01 pH
Accuracy ±0.01 pH
Range -1000 to 1000 mV / 0 to 100 %
Resolution 1 mV / 0.1 %
Accuracy ±1 mV / ±0.2 %
Range -10.0 to 125.0 ºC / 14.0 to 257.0 ºF
Resolution 0.1 ºC / 0.1 ºF
Accuracy ±0.5 ºC / ±1.0 ºF
Sensor Pt100 / Pt1000 (jumper selectable); 2 or 3 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/
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
CU 22 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 BNC (1012 impedance); asymmetrical/symmetrical
Connection Terminal 3-pin, 8-pin, 9-pin & 13-pin terminal, detachable blocks
(For TSPHCTP2000W)
3-pin, 9-pin & 19-pin
terminal, detachable blocks
(For TSPHCTP2000P)
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 250 mA, anti-surge,
S504 Bussmann
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 ºC
Max. Relative Humidity 80 % up to 31 ºC decreasing linearly to 50 %
at 40 ºC
Mechanical Specifications
Dimensions (WxHxD) 144 x 144 x 110 mm
(For TSPHCTP2000W)
96 x 96 x 175 mm
(For TSPHCTP2000P)
Weight 745 g (unit) / 1100 g (packed)
(For TSPHCTP2000W)
550 g (unit) / 950 g (packed)
(For TSPHCTP2000P)
Ingress Protection IP66 (NEMA 4X)
(For TSPHCTP2000W)
IP54 (front panel)
(For TSPHCTP2000P)

Order Information


Order No.

TSPHCTP2000W Alpha pH 2000 wall-mount pH/ORP controller/transmitter (unit only). Incl. elbow BNC connector, terminal blocks, cable glands, gasket, etc
TSPHCTP2000P Alpha pH 2000 panel-mount pH/ORP controller/transmitter (unit only). Incl. elbow BNC connector, terminal blocks, gasket, threaded rods, catch, etc

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