Countronics - Limit Controller

pH Controller, Model 112pH

Features

Accurate pH display with calibration facility on front panel.

Large 0.8 Red 7 Segment Display

Independent 2 Set Point controller with separate relays for each set limit

Auto Temp Compensation using external PT100

Digital calibration for pH-7 and pH-4

Slim enclosure of only 50mm depth

Specifications

Display : 312 Digit Red, 0.8 character height LED display

Range : 0.00 to 14.00 pH

Auto Temp : 0-100 C using PT100 ext. sensor compensation

2 Relay Outputs :Contact rating 5A at 220V AC

Relay Logic : Acid Relay ON for pH> Set Limit + Hysterisis

Base Relay ON for pH < Set Limit - Hysterisis

Calibration : Standard pH-7 : 7.00 1

Slope pH-4 : 4.00 1

Accuracy : 0.5% 1 Digit

Input Impedance: >1012

Supply :220V AC 10% @ 50/60Hz

Size : Front facia - 96mm x 96mm x 50mm

Cut Out - 92mm x 92mm

Enclosure : Plastic ABS

Weight : 700gms

Conductivity/TDS Controller Model 160-COND

Features

Auto/Manual temperature compensation selectable

Conductivity and TDS selectable from front panel

Cell Factor selectable for both 1.0 and 0.1

4 Step Range selection 0.1s to 199.9ms for conductivity

Digital calibration for Conductivity/TDS

Auto Temp Compensation using PT100 sensor

Dual set limit with separate relay outputs

Settable hysteresis for both set limits

Bright Red LED display with separate display for set limit-1

Aesthetically designed front panel with membrane switches and ABS cabinet

Specifications

Display : 0.56 Red LED 7 segment Display for Conductivity/TDS

0.56 Red LED 7 segment Display for Set-Limit-1

Ranges : Conductivity: 19.99ms 199.9ms1999 s 0.1 Cell 19.99ms 1.0 Cell199.9s 1999 s19.99s 199.9s

TDS: 0-1999ppm

Resolution : Conductivity: 0.01ms or 0.01s depending on range & Cell factor

TDS: 1ppm

Auto Temp. Comp. : 0-100 C using PT100 external sensor

Manual Temp. Comp. : Settable from front panel from 0-100.0 C

Cond/TDS Calibration : Digital calibration by factor multiplication from 0.75-1.25

Recorder Output : Isolated 4-20mA => 0-2000 (for whatever unit and resolution selected (Maximum termination 250)

Control Output : Two set of NO-P-NC, 5 Amps potential free Relay Contacts.

Relay 1 ON, for Cond/TDS < Set Limit1 Hysterises1

Relay 1 OFF, for Cond/TDS > Set Limit1

Relay 2 OFF, for Cond/TDS < Set Limit2

Relay 2 ON, for Cond/TDS > Set Limit2 + Hysterises2

Accuracy : 0.5% 1 Digit

Supply : 220V AC 10% @ 50Hz

Enclosure : Plastic (ABS). Size -96x96x110mmm

Weight : 900gms

Digital Humidity/Temperature Controller
Model 7210

Features

Direct, accurate display of Humidity and Temperature

Uses the classical Dry/Wet temperature sensing technique

Sensors are sealed Platinum PT100 type in S.S. immune to atmosphere gases etc.

No need of any look-up table as the embedded software accesses the table from the micro controller memory.

A sturdy sensor body has in-built water reservoir with facility to connect a water-drip to ensure the wick never dries up.

4 Control outputs for Humidifier, De-humidifier, heater and cooler.

Specifications

Display : 2 Digits 0.56 RED 7 Segment LED for Humidity.3 Digits 0.56 RED 7 Segment LED for Temperature

Display Range : 0-99% for Relative Humidity and 0-99.9 C for Temperature

Resolution : 1% for Relative Humidity and 0.1 C for Temperature

Control Range : 0 to 99% for Humidity (over temperature range 0 to 65 C) and 0 to 99.9 C temperature

Accuracy : 2% 1 Least Significant Digit for Humidity.0.2 C 1 Least Significant Digit for Temperature

Settings : By front panel membrane touch switches.

Control Output : Humidifier ON for RH < SET HUMID 1%De-humidifier ON for RH > SET HUMID + 1%Heater ON for Temp. < SET TEMP 0.5%Cooler ON for Temp. > SET TEMP + 0.5 C

Control Relays : 4 sets of NO-P-NC of 5A/220V AC contact rating

Power Supply : 230V AC 15% at 50/60Hz

P.C. Interface : RS-232 output available on extra cost.

Mounting Type : Panel Type

Front Facia : 96mm x 96mm

Weight : 1.2 Kgs.

Features

• mP Based Direct Display of Temperature & Humidity.
• No Need for Lookup Tables.
• Employs Classical Dry & Wet Bulb RTD(PT-100) Sensors.

Control Output

• TEMPERATURE :2 Relays are provided. One operating 0.5°C above the Set Point for Cooling and the other Operating 0.5°C below the Set Point for Heating.
• HUMIDITY : 2 Relays are provided. One operating 1% RH below the Set Point for Humidification and the other Operating 1% above the Set Point for De- Humidification

Features

• Accurate ORP display with calibration facility on front panel.
• Independent 2 Set Point controller with separate relays for Oxidation and Reduction
• Isolated Tx. 4-20mA output for remote monitoring or recording.
• Consent contact input to enable/disable the control outputs
• Bright Red LED display for clear viewing

Relay Logic

• Reduction Relay ON for ORP > Set Limit
• Oxidation Relay ON for ORP < Set Limit
• Contact rating 5A at 220V AC

Front Panel

• One membrane switch to press and read Oxid. Limit
• A second membrane switch to read the Reduc. Limit
• Screw type trimpot to adjust the Calibration Zero

Features

• Precision indication of conductivity
• Automatic Temperature Compensation
• 4 Step Range selection 0.1s to 199.9ms
• 2 independent Set Points with High and Low logics for on-line control
• Front Panel touch type membrane switch to read the limits set
• Voltage corresponding to Conductivity available for external recorder
• Cell Adjust on front panel for calibration.

Range

• a. 199.9s
• b. 1999s
• c. 19.99ms
• d. 199.9ms

The range is selectable from the rear and can be calibrated by Cell Adj at the front for individual range.

Compensation

The Compensation is internally set at 2% per C

NOTE: If PT100 is not available, then fix a simulated resistance of PT100 @ 25C approx. 110. Instrument will not work otherwise.

Features

• Accurate pH display with calibration facility on front panel.
• Large 0.8” Red 7 Segment Display
• Auto Temp Compensation using external PT100
• Digital calibration for pH-7 and pH-4
• Slim enclosure of only 40mm depth

Features

• Accurate pH display with calibration facility on front panel.
• Large 0.8” Red 7 Segment Display
• Auto Temp Compensation using external PT100
• Independent 2 Set Point controller with separate relays for each set limit
• Digital calibration for pH-7 and pH-4
• Slim enclosure of only 50mm depth

Features

• Accurate ORP display with calibration facility on front panel
• One set limit and other window alarm alarm limit with separate relays for Oxidation and alarms
• Isolated Tx. 4-20mA output for remote monitoring or recording.
• Consent contact input to enable/disable the control outputs
• LCD display for low voltage consumption

Relay Logic

• Oxidation Relay ON for ORP < Set Limit
• Alarm Relay ON for ORP < Set Limit – Alarm and
• ORP > Set Limit + Alarm
• Contact rating 5A at 220V AC

Front Panel

• One membrane switch to press and read Oxid. Limit
• A second membrane switch to read the Alarm. Limit
• Screw type trimpot to adjust the Calibration Zero