pH And ORP Indicators/Controllers specially designed for water treatment and swimming pool applications where both pH and ORP (Oxidation Reduction Potential) need to be monitored. Instead of having to source two different meters and worry about wiring and compatibility, you can now continuously measure both pH and ORP with HI 981406.

There are two separate set points for pH and ORP which the operator can adjust at will. Once the pH set point is exceeded, the appropriate LED light will come on to alert the operator. Likewise, once the ORP level drops below the set point, the red ORP light will stay on.

Combined pH/ORP/Conductivity/TDS Bench Top Indicator

Model 5501

Accurate pH display with 0.01pH resolution
Auto buffer recognition with 2 point calibration for pH
Auto/Manual temperature compensation selectable for both pH and Conductivity
4 Step Range selection 0.1µs to 199.9ms for conductivity
Cell Factor selectable for both 1.0 and 0.1
Digital calibration for conductivity
Auto Temp Compensation using PT100 sensor
One touch switching between conductivity and pH display selections
Large alphanumeric LCD display with bright back light
Aesthetically designed front panel with membrane switches and sleek bench top cabinet

Specification

Display	2 line large alphanumeric display with back light illumination
Ranges	pH: 0.00 to 14.00 pH ORP: 0-2000mV Conductivity:19.99ms/1999µs/199.9µs/19.99µs in 0.1 Cell Constant 199.9ms/19.99ms/1999µs/199.9µs in 1.0 Cell Constant TDS: 0-1999ppm
Resolution	pH: 0.01pH ORP: 1mV Conductivity: 0.01ms or 0.01µs depending on range & Cell factor TDS: 1ppm
Auto Temp. Comp.	0-100⁰C using PT100 external sensor for pH and Conductivity
Manual Temp. Comp.	Settable from front panel from 0-100.0°C for pH and Conductivity
pH Calibration	2 Point calibration with auto buffer recognition. Buffers recognized: 4.00, 7.00, 9.00, 10.00 pH
Conductivity Calibration	Digital calibration by factor multiplication from 0.75-1.25
Accuracy	0.5% ± 1 Digit
Supply	220V AC ±10% 50Hz

Send Enquiry

Combined pH/ORP/Conductivity/TDS Bench Top Indicator

Digital pH Indicator, Panel Mounted

Model 120pH

Bright Red LED displays
Precision indication of pH
Auto Temperature Compensation
Front Panel calibration of pH-4 and pH-7
Isolated Transmitter for remote monitoring
Panel Mounting flame-proof enclosure

Display	: 3 1/2 Digit 0.5 inch height Red LED.
Range	: 0-14.00 pH
Input Impendence	: >10¹² OHMS
Resolution	: 0.01 pH
Accuracy	: +/- 0.5%
Calibration	: Front Adjustable pH 4 & pH 7
Temp. Compensation	: Automatic using PT-100 Temp Sensor
Supply	: 220V +/- 15% AC 50Hz
Size	: 96x96mm Front Facia

Send Enquiry

pH/MV/Temp.Indicator Table/Bench Top

pH/mV/Temp. Indicator Table/Bench Top Model 7100-02

Features:

Accurate pH display with 0.01pH resolution
Front panel calibration for pH-4 and pH-7
Auto/Manual temperature compensation selectable
Auto Temp Compensation using PT 100 sensor
Large LCD display for ease of view
Aesthetically designed front panel with membrane switches and sleek bench top cabinet
Available in wall mounting version on request

Specification

Display	3 1/2 Digit 0.5 inch height LCD display
Ranges	0-14.00 pH
Resolution	0.01 pH
Size	6.26.72.2
Temp. Compensation	Automatic using PT-100 Temp Sensor
Calibration	Front Adjustable pH 4 and pH 7
Accuracy	+/- 0.5%
Supply	220V +/- 15% AC 50Hz

Send Enquiry

Wall Mounted pH Indicator

Item Code: 4-20mA-Tx

Display	: 3½ Digit LCD.
Range	: pH : 0 - 14.00 pH
	: ORP : 0-1999mV
Temp	: -100°C to 199.9°C.
Accuracy	: 0.5% ± 1 Digit.
Supply	: 110/220V AC ± 10%.
Input Impendence	: >10¹² Ohms for pH/ORP.
Calibration	: For pH 4 AND pH 7.
Display Select	: By touch membrane switch indication with LEDs.
Temp Compensation	: Manual : Range 0 - 100°C Automatic : Range 0 - 100°C
Outputs	: pH : 4-20 mA Isolated for 0 -14 pH
	: ORP : 1999 mV Non- Isolated
	: TEMP : 0 - 1 V for 0-100°C Non Isolated.
Mounting	:Wall Mounting on two Screws.
Size	:160 mm x 170 mm
Depth	:60 mm
Shipping Weight	:900 grms..

Send Enquiry

PH Controller With Dual Limits And Isolated 4-20ma Tx. Output

Model 110pH

Features:

Accurate pH display with calibration facility on front panel.
Independent 2 Set Point controller
Bright Red LED display
Isolated Tx. Output for remote monitoring
Pleasing aesthetics with membrane selector switches
Auto Temp Compensation using PT100
Consent contact output available to control ORP.

Specification :

Display	3½ Digit LED 0.56” character height
Range	0.00 to 14.00 pH
Auto Temperature	0-100°C using PT100 external sensor Compensation
Calibration	Standard pH-7 : 7.00 ± 1, Slope pH-4 : 4.00 ± 1
Alarm Limits	0 to 14.00 for Acid/Base
Accuracy	0.5% ± 1 Digit
Input Impedance	>10¹² Ω
Tx. Output	4-20mA isolated for 0-14.0 pH
Relay Output (2 Nos)	Contact rating 5A at 220V AC
Control Relay Logic	Acid Relay ON for pH > Set Limit, Base Relay ON for pH < Set Limit
Consent Contact Output	P-NO contact rating 5A/220V AC ON when pH within ACID & BASE Limits.
Supply	110V AC/220V AC ± 10% at 50Hz/60Hz
Size	96mm x 96mm facia & Cut Out 92mm x 92mm
Enclosure	Plastic (ABS) flame retardant
Weight	800gms

Send Enquiry

PH Controller With Dual Limits And Isolated 4-20ma Tx. Output

PH Controller With Control Output And Window Alarm Output And Iso. Tx

PH Controller With Control Output And Window Alarm Output And Iso. Tx

Model 150pH

Model 150 pH controller is panel mounted DIN size instrument with 3½ Digit LCD.
Indicates pH when attached to a pH electrode. The membrane key pad MODE SWITCH in front allows indication of normal pH.
Limits for acid/base together with additional band alarm limits for acid/base.(acid/base logic internally selectable).
In addition a Consent contact output is provided to be used in conjunction with an ORP Controller for ORP dosage.
The equipment also provides an Isolated 4-20mA output for recorder purpose.

Specification

Display	: 3½ Digit LCD 12.5 mm
Range	: 0.00 - 14.00 pH
Auto Temp Compensation	: 0-100°C with PT 100 Sensor
Set Limits	: 0 - 14.00 pH
Alarm Limts	: Band type Alarm equally above/below set limit.
Accuracy	: 0.5% ±1 Digit.
Input Impedence	: > 10¹² Ohms.
Relay Outputs	: 110V/220V AC @ 5 Amp. (Except Consent contact)
Transmitter Output	: 4-20mA Isolated
Consent Contact	: ON when pH within the Alarm Band.
Calibration	: Standard pH 7.00
	Slope pH 4.00
Supply	: 110/220V AC ± 10%
Control Logic	:Control Relay ON :pH>Set limit, if Acid logic selected internally pH < Set limit, if Base logic selected internally.
	:Alarm Relay ON: : pH > Set limit + Alarm Band or pH < Set limit - Alarm Band
Front Panel Controls	: 1)One Single touch switch to select the LCD Display indication.
	a) pH. (NORMAL) b) pH Set limit (Limit setting by 10-turn Trimpots) C) Band Alarm limit ( Limit setting by 10-turn Trimpots) In case the equipment is left unattended on any position other than normal, it will revert autmatically to normal after 30 secs.
	: 2) Calibration.
	2 Nos. 10-Turn Trimpots provided to adjust pH 4 & pH 7.
Size	: FRONTFACIA : 96mm x 96mm
	: PANEL CUTOUT : 92mm x 92mm
	: DEPTH : 141mm + 5mm
Shipping Weight	:1000 grams.

Send Enquiry

Ph Controller With Dual Control Limits And Dual Alarms & Isolated Transmitter

Model 100-pH

Model 100 pH Controller is panel mounted DIN size instrument with 3½ Digit LCD.
Indicates pH when attached to a pH electrode. The membrane key pad MODE SWITCH in front allows indication of normal pH.
Limits for acid/base together with additional alarm limits for acid/base.
In addition a Consent contact output is provided to be used in conjunction with an ORP Controller for ORP dosage.
The equipment also provides an Isolated 4-20mA output for recorder purpose.

Specification

Display	: 3½ Digit LCD 12.5 mm
Range	: 0.00 - 14.00 pH
Auto Temp Compensation	: 0-100°C with PT 100 Sensor.
Set Limits	: 0 - 14.00 pH for ACID & BASE
Alarm Limits	: 0 - 14.00 pH for ACID & BASE
Accuracy	: 0.5% ±1 Digit.
Input Impedence	: > 10¹² Ohms.
Relay Outputs	: 110V/220V AC @ 5 Amp. (Except Consent Contact).
Transmitter Output	: 4-20mA Isolated.
Consent Contact	: ON when pH within ACID & BASE Limits.
Calibration	: Standard pH 7 : 7 ± 1
	Slope pH 4: 4 ± 1
Supply	: 110/220V AC ± 10%
Control Logic	:ACID : pH > SET LIMIT. ACID RELAY ON
	:BASE : pH < SET LIMIT, BASE RELAY ON
	:ALARM : pH > ACID ALARM or < BASE ALARM, then ALARM RELAY ON
Front Panel Controls	: One single touch switch to select sequentially the LCD Display indication
	a) pH. (NORMAL) b) ACID SET LIMIT c) ACID ALARM LIMIT d) BASE SET LIMIT e) BASE ALARM LIMIT In case the equipment is left unattended on any position other than normal, it will revert autmatically to normal after 30 secs.
Size	:FRONT FACIA: 96mm x 96mm
	:PANEL CUTOUT: 92mm x 92mm :DEPTH: 141mm + 5mm
Shipping Weight	:1000 grms.

Send Enquiry

Ph Controller With Dual Control Limits And Dual Alarms & Isolated Transmitter

ORP Controller With Dual Control Limits and Dual Alarms and ISO. TX. Model 100-orp

Model 100 ORP controller is panel mounted DIN size instrument with 3½ Digit LCD.
Indicates the value of Oxidation-Reduction Potential (REDOX) when attached to an ORP electrode.
The membrane key Mode Switch in front allows indication of normal ORP millivolt, Limits for Oxidation/Reduction, together with additional Alarm Limits for Oxidation/Reduction.
A consent contact input, at the rear, enables all control outputs. This consent input is the output of a pH controller. The equipment also provides an isolated 4 to 20mA output for recorder purpose.

Specification

Display	: 3½ Digit LCD 12.5 mm
Range	: ± 1999 mV
Set Limits	: 0-1999 mV for OXID/REDUC
Alarm Limits	: 0-1999 mV for OXID/REDUC.
Accuracy	: 0.5% ± 1 Digit
Input Impedence	: > 10¹² Ohms
Relay Outputs	: 110V/220V AC 5 Amp.
Transmitter Output	: 4-20 mA Isolated for 0-1000 mV
Calibration Zero Adjust	: RANGE ± 30 mV
Consent Contact Input	: From pH CONTROLLER. If open , cuts off all Relay Outputs.
Supply	:110/220V AC ± 10%
Control Logic	: REDUC : ORP > SET LIMIT. REDUC RELAY ON.
	: OXID : ORP < SET LIMIT. OXID RELAY ON.
	: ALARM : ORP > REDUC ALARM or < OXID ALARM then ALARM RELAY ON.
Front Panel Controls	: One single touch switch to select sequentially the LCD Display indicator.
Front Panel Controls	a) ORP (Normal) b) OXID SET LIMIT c) OXID ALARM LIMIT d) REDUC. SET LIMIT e) REDUC ALARM LIMIT In case the equipment is left unattended on any position other than normal, it will revert autmatically to normal after 30 secs.
Size of Front Facia	: 96 mm x 96 mm
Size of Panel Cutout	: 92 mm x 92 mm
Depth	: 141 mm + 5 mm
Shipping Weight	: 1000 grms.

Send Enquiry

ORP Controller With Dual Control Limits And ISO. 4-20ma Tx.Output

Model 110-ORP

Model 110 ORP controller is panel mounted DIN size instrument with 3½ Digit LCD.

Indicates the value of Oxidation-Reduction Potential (REDOX) when attached to an ORP electrode.
User settable separate control limits and control outputs for Oxidation and reduction
A consent contact input, at the rear, enables all control outputs. This consent input is the output of a pH controller. The equipment also provides an isolated 4 to 20mA output for recorder purpose.

Specifications:

Display	: 3½ Digit LCD 12.5 mm
Range	: ± 1999 mV
Set Limits	: 0-1999 mV for OXID/REDUC

Accuracy	: 0.5% ± 1 Digit
Input Impedence	: > 10¹² Ohms
Relay Outputs	: 110V/220V AC 5 Amp.
Transmitter Output	: 4-20 mA Isolated for 0-1000 mV
Calibration Zero Adjust	: RANGE ± 30 mV
Consent Contact Input	: From pH CONTROLLER. If open , cuts off all Relay Outputs.
Supply	:110/220V AC ± 10%
Control Logic	: REDUC : ORP > SET LIMIT. REDUC RELAY ON.
	: OXID : ORP < SET LIMIT. OXID RELAY ON.
Size	: 96x96x141mm
Shipping Weight	: 1000 grms.

Send Enquiry

ORP Controller With Dual Control Limits And ISO. 4-20ma Tx.Output

Combined pH And ORP Controller With Separate Limits For pH And ORP

Combined pH And ORP Controller With Separate Limits For pH And ORP

Model 7215-01

Simultaneous display of pH and ORP
Simultaneous control of two pumps/valves
115/220 VAC (Internally selectable)
Heavy Duty 10 Amp at 115VAC Relays

This unique control system allows both pH and ORP to be controlled and monitored simultaneously. ORP measures the oxidation level in the water typically as a result of water treatment by Chlorine, Bromine, Ozone, Peroxides, Peracetic Acid, etc., and pH allows optimum conditions for the chemistry to be effective.

Chemical Automation is recommended by Health Department officials and water quality experts as the only reliable solution to the problems of water chemistry, and in the maintenance of safe and hygienic water. Chemical automation pays for itself very rapidly, through savings in chemicals and maintenance.

Specifications:

pH Range:	0.00 - 14.00pH
pH Resolution:	0.01pH
pH Control:	Adjustable set point in range 5.20 - 10.00pH
pH 115VAC outlet:	Powered when actual pH reading is ABOVE the Set Point
ORP Range:	+/- 1999mV ORP
ORP Resolution:	+/-1mV ORP
ORP Control:	Adjustable set point in range 200 - 600mV (can be modified)
ORP 115VAC outlet:	Powered when actual ORP reading is BELOW the Set Point
Display:	pH LCD / H=1 /2" (12.5mm), ORP LCD / H=3/8" (7.7mm)
Dimensions:	6.2x 6.7x 2.2" (WxHxD)
Weight:	1.7Lbs. / 0.8kg
Power Consumption:	115VAC/60Hz / 0.25Amp
pH and ORP outlets:	115VAC/60Hz / Maximum 5 Amp. per outlet