Digital Indicators Controllers |
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We are the leading manufacturer of digital indicatiors controllers which are made by using superior quality of raw materials and is available at very reasonable prices all across the globe to our clients. It is known for its durability and reliability. It is economical and very safe to use. It is secure, effective and efficient.
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 | Temperature Controller | | |
| Product Name: PID Controller
Model: EQ-508-A21
FEATURES
- Measuring T/C, Pt 100. Process Signal mA, Vdc
- Accuracy; ± 0.5% of Full Scale
- 4 Digital Display: -1999-9999
- Heating / Cooling Control Output Available in Option
- High Stability & Low Cost
SPECIFICATIONS
| Input Type | Code | Measuring Range | Input Type | Code | Measuring Range | | Thermocouple (TC) | K | -500~+1350 0 | Direct Voltage (U) | 0-5V | Customized range within -1999 - -9999 | | S | -500~+1350 0 | 1-5V | | E | -500~+1750 0 |
| | J | -500~+800 0 |
| | Resistance Thermometer Detector (RTD) | Cu50 | -500~+1000 0 | Resistance (I) | 0-20mA | | Pt100 | -2000~+850 0 | 4-20mA |
| Measuring Accuracy | ± 0.5% F.S.±1 digit | | Scaling | -1999-9999 | | Sampling Time | < 0.3 Sec |
Displayfunctions
| LEO | Dual display tor PV&SV | | Decimal Point | Settable any digit by front key (linear input) | | Unit | °C and °F changeable | | Compensation | For PV and SV |
Control mode
| ON/OFF Control | When P sets to be 0(P=0). | | Hysteresis (Hy): 0-1000 counts | | PID Control | Auto tuning | | Proportional Band (P): 0.0-200.0% of span | | Reset time (Integral): 0-999 sec. | | Rate time (Deviation): 0-999 sec. | | Direct/Reverse programmable | | Control Output: | Relay SPDT x 1. 5A/240Vac |
Operating
| Operation Key | Four key for Function setting |
Mechanical
| Case material | ABS | | Mounting | Panel flush mounting | | Connection | Screw terminal | | Weight | Approx. 300g |
For more details, click the given below attachment.
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| Panelmount Process Indicator | | |
| Product Name: Panel mount process indicator
Model: EQ-DS8A-RRB
This is an universal input process indicator which accepts Current (mA) and Voltage (VDC) can be configure using front panel key pad. The unit has double display for indication of process value and programming data.
A robust industrial grade indicator which can be used to measure the signal from Pressure Transmitter, Temperature Transmitter, Humidity Transmitter, pH Transmitters or for any type of process measuring transmitters having linear put. Measuring range is freely configurable and also with decimal point as required.
FEATURES
- Configurable Input- mA, VDC, mV
- Large LED Display
- Measuring range / Zero Point can be Adjusted.
- Peak Hold Function
- Configurable Decimal Point
- Auxiliary Power Supply of 24VDC
TECHNICALSPECIFICATION
| Display | 4 Digit LED | | Input | mA, VDC, mV (Selectable from Front Panel Keys) Current: 0~1 mA, 0~10 mA, 4~20 mA Voltage: 0~5V DC, 0~10V DC, 0~500V DC Millivolts: 0~10 mV, ±100 mV | | Accuracy | 0.25 % F.S. ± 1 Digit | | Sampling Rate | 8 times/second | | Alarm | 2 X 3A / 230VAC Relay | | Auxiliary Power Supply | DC 12/24/30 mA | | Power Supply | 90-260V AC | | Dimension | 48 x 96 mm |
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| Process Indicator | | |
| Product name: process indicator
Model: ES4900
Features
• 4 Digits process (PV) display
• Universal Process Input (TC. RTD. MV, V, mA
• Dual or Multi-point Calibration for Voltage/Current Input
• Smart Output Module System
• Programmable Alarm Functions
• Auxiliary Power Supply 15VDC 50mA
• Retransmission of Process Value or Process Control by using 0/4...20mA: Current Output Module
• RS-232 (Standard) or RS-485 (Optional) serial Communication with Modbus RTU Protocol
SPECIFICATIONS:
| Process Input | TC, RTD. Voltage/Current Thermocouple (TC): L(DIN 43710), J. K, R. S. T, B, E ve N (IEC584.1) (ITS90), C (ITS90) Thermo resistance (RTD): PT-100 (IEC751) (IS90) Input: mV. V, mA | | Measurement Range | Please refer Table-1 | | Accuracy | ± 0.25% of f.s. for thermocouple, Thermoresistance, mV, ± 0.70% of f.s. for mA | | Cold Junction Compensation | Automatically ± 0.1 °C/1°C | | Line Compensation | Maximum 10 Ohm | | Sensor Break Protection | Upscale | | Sampling Cycle | 3 samples per second | | Input Filter | 0.0 to 900.0 seconds |
OUTPUT
| Standard Relay Output | 5A@250V - (for resistive load) | | Measurement Range | Please refer Table-1 | | Output Modules | Two input/Output Modules can be plugged in sockets for using as an alarm output (Available output Modules) |
- Relay Output Module
- SSR Output Module (Max. 20mA @ 18V)
- Digital (Transistor) Output Module (Max. 40mA @ 18V )
- 0/4....20mA Current Output Module
DISPLAY
Process Display :
- ESM-4400 : 10 mm Red 4 digits LED display
- ESM-4900 : 20 mm Red 4 digits LED display
SUPPLY VOLTAGE
100-240V - 50/60 Hz (-15%; + 10%)-6VA Standard
24 V (-15%; +10%)-6W (if justified by Qty.)
(Must be determined in order)
For more details, click the given below attachment.
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| PH Controller | | |
| Product Name: Microprocessor based process controller
Model: UPC 2S
Features:
- Economical, Easy to Use
- Configure display range
- Selectable heating/ Cooling function
- Password Protected
- Auxiliary power supply for transmitter
- Optional retransmission output
Typical Areas of Application:
- Temperature Control Systems
- Ph dosing Systems
- Flow/ Level Indication
- Pressure control System
- Humidity Control System
This Microprocessor - Based instrument is basically a process controller, which accepts a 4~20 mA input from any sensor and displays the corresponding process valve as per configured range. It has two individual set points, one of the control and the other for alarm. Configuration can be done in two modes in which user can change the resolution of input process valve, control set point, alarm set point, Hysterisis, Set point limits and offset Calibration.
For more details, Kindly click on the below attached link.
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| Humidity Indicator/Temperature indicator | | |
| Product name: humidity indicator/temperature indicator
Model: EQ-TH 2000
We are one of the leading importers of a qualitative array of jumbo temperature / Relative Humidity (RH) indicator that is widely used in the findings of relative humidity and temperature. It is offered in the model number EQ-TH 2000 and is widely appreciated for its reliability and accurate functioning under industrial conditions.
Some of the attractive features include:
- 2" Large size display
- Bright LED Display
- Long Term Repeatability and Accurate
- Wall Mount / Hanging Type
- Retransmission output for Data Loggers / Acquisition Systems
- On-field Calibration Facility
Construction:
- The indicator in combination with Precise Temperature / Humidity Transmitter displays the temperature and Relative Humidity values continuously.
- It has the jumbo LED display which can be viewed from for places and with better accuracy.
- It has a retransmission output of 4—20mA corresponding to Temperature &. Humidity values which can be used for further Data Acquisition System , data loggers, for alarm system
Technical Specifications:
| Display | 2" Red LED x 2 Display | | Accuracy | 0.50% | | Resolution | 0.10C; 0.1% RH | | Input | 4—20rnA from Temp / RH Transmitter | | Calibration | Zero & t span using Trimmers | | Retransmission Output | 4 - 20mA | | Enclosure | Powder Coaled metal case | | Operating Voltage | 230VAC | | Dimension | 445(L) x 130(D) x 115(H) |
Technical Details of Temperature and Humidity Sensor (Optional)
| Measuring Range | 0 to 100% RH , 0 lo 100 C | | Accuracy | 2% RH, 0.3 C | | Operating Temperature | up to 80 C | | Temp Compensation | 0.008% RH / C | | Respons | | |
| Load Cell Indicators | | |
| Size : 96x192 plastic body
Features :
6 digits lcd display
6 digits lcd display peak hold
Soft key pad,
Calibration through soft keys
100000 counts
Smart software to adjust any capacity of load cell |
| Panel Mounted pH Analog Controller - HI 8710 | | |
| Reliable ph control
The hi 8710 is a panel mounted ph controller with self diagnostic and test. The user can set: the setpoint for acid or alkaline dosage, the tolerance of the setpoint before an alarm is activated, the dosage mode: automatic, continuous on or off and the over dosage control by setting the overtime dosage knob
When used in conjunction with the hi 8720 orp controller, the odcd* function will ensure that the orp dosage will start only when the ph level is correct.
The controller is also provided with a unique self-diagnostic test to check the ph electrode and instrument status.
"Over time dosage" function with selection knob and jumper for disable on the rear panel. If the dosing relay remains continuously activated for more than selected dosing time the alarm relay is activated, the alarm led is blinking and the dosing relay is deactivated.
”Automatic/off/manual" dosing selection switch and led on the front panel.
In automatic mode all the relays are controlled based on the measurement set point and alarm values. In off mode the dosing and alarm relays are always deactivated. The dosing led is off (as relay status) and the alarm led is in accordance with the instrument setpoint, input reading and aalarm.
In on (manual) mode the dosing relay is always on, the alarm relay is still enabled. If an alarm occurs the dosing relay is not deactivated. If the over dosage time expires during manual mode, the alarm relay remains activated |
| Panel Mounted pH Analog Controller - HI 8711 | | |
| Dual output versatility
This instrument allow the selection of two setpoints with two independent outputs for acid and alkaline dosages.
Hi 8711 ph controllers are ideal for process control monitoring in a wide range of industrial applications.
These instruments have been edesigned with extended ph and temperature compensation ranges as well as bnc, amplified input and input from transmitter all in one instrument.
Each model accepts either a direct input from a ph or orp electrode or from a transmitter through 4-20 ma input. The instrument also provides ¢5v power output and input terminals for amplified electrodes.
Moreover, you can choose the output configuration for connecting a recorder or a plc, between o-20 or 4-20 ma.
The hi 8711 incorporates adjustable ov6l'iitltl€ dosing protection from 5 to 60 minutes. If dosing exceeds selected time, the alarm will be triggered and the dosing contact will deactivate. This feature can be activated or deactivated via a shorting connection on the rear panel.
The front panel is protected behind a transparent splash-proof cover. |
| Panel Mounted pH Analog Indicator - HI 8510 | | |
| Designed for process control monitoring
Hi 8510 has been redesigned with extended ph and temperature compensation ranges as well as bnc,
amplified probe input and input from transmitter all in one instrument.
These instrumens are ideal for monitoring ph in process control. They can provide accurate ph measurements and display values on the easy-to-read lcd.
Designed for easy and fast installation, the hi 8510 is provided with membrane keypads on the front panel, large display and autodiagnostic functions to check ph electrode and instrument status. These instruments also provide i5v power output and input terminals for amplified electrodes.
The front panel is protected behind a transparent splash-proof cover.
Inputs allowed:
- BNC connector
- Direct wire connection with amplified probe (supports hi 1006 series probes)
- 4-20 ma from a transmitter
- Broader ph range: -2. 00 to 16. 00 ph
- Extended temperature compensation range: -20 to 100°c
- Supports potential matching pin connection
- Both 4-20 and 0-20 ma output
- 5v outputs for amplified electrodes
- Back lit lcd
- Auto-diagnostic tests for ph electrode and instrument status
- Operational mode led indicators
- Designed for easy installation
- Transparent splash-proof cover included
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| PH Mini Controller - BL 981411 | | |
| BL 981411 pH controller has been designed for easy, affordable installation in tight spaces, ideal for simple and effective process control. The unit is provided with high impedance pH input
and can be used with any pH electrode with standard BNC connector. Measurements are clearly displayed on the large LCD, while the status LED indicates operating mode.
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| PH Mini Controller - BL 931700 | | |
| BL 931700 mini pH controller has been designed for easy, affordable installation in tight spaces to perform simple yet effective process control. Thanks to its compact size, BL 931700 can be installed right next to tanks or vats.
This versatile controller is ideal for a wide variety of applications, such as textiles, papers, photographic solutions, plating baths, chemicals and water treatment.
BL 931700 is provided with a selectable set point for acid or basic dosage.
Measurements are directly acquired from a pH electrode in the range from 0 to 14 with a 0.01 pH resolution. |
| ORP Mini Controller - BL 982411 | | |
| BL 982411 is an ORP mini controller for panel mounting, specially designed for swimming pools and spas. Thanks to its compact size, BL 982411 can be installed in small spaces. BL 982411 is the ideal solution for those who have always checked ORP manually. With it’s automatic dosing, this mini controller will significantly reduce maintenance time.
BL 982411 can be used with any ORP electrode with standard BNC connector. The instrument measures ORP in the 0 to 1000 mV range and shows the readings on the large display. The status LED continuously indicates if the controller is in measurement, dosing or alarm mode. |
| ORP Mini Controller - BL 932700 | | |
| BL 932700 is an ORP mini controller that has been designed for easy, affordable installation in tight spaces, ideal for simple yet effective process control. As a result of its compact size, BL 932700 can be installed right next to tanks or vats. This versatile controller is ideal for many applications, such as ORP monitoring bleaching processes, waste water treatment and swimming pools. BL 932700 permits automatic control of installations previously checked manually. |
| Conductivity Mini Controllers - BL (983313 983320-983322) | | |
| These HANNA mini controllers have been specially designed for water conditioning and growing applications. Compact in size, they can be mounted in confined spaces or even right next to the vat or barrel containing the chemicals. These meters permit automatic control of installations previously checked manually. EC measurements are shown on the large display and the multicolored LED continuously indicates if the mini controller is in measurement, dosing or alarm mode. BL 983313 measures in the 0 to 1999 µS/cm range, BL 983320 measures from 0.0 to 199.9 µS/cm and BL 983322 from 0.00 to 19.99 µS/cm. |
| Conductivity Mini Controllers - BL (983317-983327) | | |
| BL 983317 and BL 983327 are panel mounted mini controllers with an output relay that have been designed for easy, affordable installation in tight spaces—ideal for simple yet effective process control. They are provided with automatic compensation for variations in temperature. The probe is easy-to-clean and requires very little maintenance. The calibration is performed at 1 point, through a trimmer. All wiring and connections to external devices are done through the terminals on the rear panel. The multicolor LED continuously indicates if the controller is in measurement, dosing or alarm mode. |
| Total Dissolved Solides Mini Controllers | | |
| These instruments have been designed for TDS control in hydroponics, horticulture and water conditioning. Compact in size, they can be mounted in confined spaces or even right next to the vat or barrel containing the chemicals. These meters permit automatic control of installations previously checked manually. Readings are shown on the large display and the multicolored LED continuously indicates if the mini-controller is in measurement, dosing or alarm mode. BL 983315 can control TDS from 0.0 to 199.9 ppm, BL 983319 from 0 to 1999 ppm, BL 983321 from 0.00 to 19.99 ppm and BL 983329 from 0 to 999 ppm. |
| Total Dissolved Solides Mini Controllers - BL (983318) | | |
| BL 983318 is a mini controller that has been designed for easy, affordable installation in tight spaces, ideal for simple yet effective process control. BL 983318 features ATC (Automatic Temperature Compensation) and simple one point calibration is performed through trimmer. The multicolored LED continuously indicates if the controller is in measurement, dosing or alarm mode.
Wiring and external device connections are extremely simple to perform through the terminals on the rear of the instrument. |
| Total Dissolved Solides Mini Controllers - BL (983324) | | |
| BL 983324 is a panel mounted TDS controller, designed for easy installation, configuration and maintenance. The meter is provided with a dosing relay, activated when the TDS reading exceeds the set point value. Measurements are compensated for temperature variations and shown on the large display automatically. A multicolored LED on the front panel continuously indicates if the mini controller is in measurement, dosing or alarm mode. Wiring and external device connections are extremely simple to perform through the terminals on the rear of the instrument. |
| Resistivity Mini Controllers - BL 983314 | | |
| BL 983314 is a simple-to-operate resistivity controller designed for ultra pure water, R.O., and water conditioning applications. The BL 983314 resistivity controller is also ideal for continuous
monitoring of process solutions. Set point and calibration are manually adjusted with a trimmer and the alarm relay allows for simple control. Readings are automatically temperature compensated, with three different coefficients (β=2.4, 3.5 or 4.5 %/°C). The alarm contact can be used for connection
to an alarm, pump, solenoid or dosing system. The relay contact is open when readings are higher than the set point, while for measurements lower than set point, the relay contact is closed. The Hysteresis is typically 0.20 MΩ/cm from the set point. |
| Jumo Dicon 500 Type 703570/0... | | |
| Brief description
This series of universal, freely configurable process controllers is available in the formats
96mm x 96mm and 96mm x 48mm (portrait and landscape format).
the instruments feature two 4-digit 7-segment displays, five or eight leds for indication of
The switching status and operating modes, an 8-digit matrix display, as well as six keys for
operation and configuration.
The user has flexibility in assigning the slots of the controller according to the block structure.
additional functions include self-optimisation, parameter set switching, and up to eight limit
comparators.
Liberalizations for conventional transducers are held in the memory; a customized linearisa-
tion table can be programmed.
The process controller can be adapted to a variety of tasks with the aid of a maths module.
the instruments can be integrated into a data network via a serial interface, or can be ex-
panded through an external relay module.
A setup program is available for easy configuration from a PC.
The electrical connection is at the rear by screw terminals.
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| Jumo Dicon 400 Type 703575/1... | | |
| Brief description
This series of universal, freely configurable process controllers is available in the formats
96mm x 96mm and 96mm x 48mm (portrait and landscape format).
The instruments feature two 4-digit 7-segment displays, five or eight leds for indication of
The switching status and operating modes, an 8-digit matrix display, as well as six keys for
operation and configuration.
The user has flexibility in assigning the slots of the controller according to the block structure.
additional functions include self-optimisation, parameter set switching, and up to eight limit
comparators.
Linearisations for conventional transducers are held in the memory; a customized linearisa-
tion table can be programmed.
The process controller can be adapted to a variety of tasks with the aid of a maths module.
The instruments can be integrated into a data network via a serial interface, or can be ex-
panded through an external relay module.
A setup program is available for easy configuration from a PC.
The electrical connection is at the rear by screw terminals.
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| Jumo Dicon 500 Type 703575/2... | | |
| Brief description
This series of universal, freely configurable process controllers is available in the formats
96mm x 96mm and 96mm x 48mm (portrait and landscape format).
The instruments feature two 4-digit 7-segment displays, five or eight leds for indication of
the switching status and operating modes, an 8-digit matrix display, as well as six keys for
operation and configuration.
The user has flexibility in assigning the slots of the controller according to the block structure.
additional functions include self-optimisation, parameter set switching, and up to eight limit
comparators.
Linearisations for conventional transducers are held in the memory; a customized linearisa-
tion table can be programmed.
The process controller can be adapted to a variety of tasks with the aid of a maths module.
the instruments can be integrated into a data network via a serial interface, or can be ex-
panded through an external relay module.
A setup program is available for easy configuration from a PC.
The electrical connection is at the rear by screw terminals.
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| Jumo Dicon 401 Type 703585/1...Measuring Instrument | | |
| Brief description
The series of universal, freely configurable profile controllers /generators is available in the
formats 96 mm x 96 mm and 96 mm x 48 mm (portrait and landscape format).
The instruments feature two 4-digit 7-segment displays, five or eight led for indicating. The
switching status and operating modes, an 8-digit matrix display, as well as six keys for
operation and configuration.
The user has flexibility in assigning the slots of the profile controller according to the block
structure.
10 profile programs with up to 100 segments can be programmed; a total of 100 segments
is available.
Additional functions include self-optimisation, parameter set switching, a real-time clock, up
to 8 limit comparators and a maximum of eight operating contacts.
Linearisations for conventional transducers are stored in the memory; furthermore, a custom-
ized linearisation table can be programmed.
The profile controllers can be adapted to a variety of tasks with the aid of a maths module.
the instruments can be integrated into a data network via a serial interface, or they can be
expanded through an external relay module.
A setup program with a program editor is available for easy configuration from a pc.
the electrical connection is at the rear by screw terminals.
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| Jumo Dicon 501 Type 703580/0... | | |
| Brief description
The series of universal, freely configurable profile controllers /generators is available in the
formats 96 mm x 96 mm and 96 mm x 48 mm (portrait and landscape format).
The instruments feature two 4-digit 7-segment displays, five or eight leds for indicating the
switching status and operating modes, an 8-digit matrix display, as well as six keys for
operation and configuration.
The user has flexibility in assigning the slots of the profile controller according to the block
structure.
10 profile programs with up to 100 segments can be programmed; a total of 100 segments
is available.
Additional functions include self-optimisation, parameter set switching, a real-time clock, up
to 8 limit comparators and a maximum of eight operating contacts.
Linearisations for conventional transducers are stored in the memory; furthermore, a custom-
ized linearisation table can be programmed.
The profile controllers can be adapted to a variety of tasks with the aid of a maths module.
The instruments can be integrated into a data network via a serial interface, or they can be
expanded through an external relay module.
A setup program with a program editor is available for easy configuration from a PC.
The electrical connection is at the rear by screw terminals.
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| Jumo Dicon 501 Type 703585/2... | | |
| Brief description
The series of universal, freely configurable profile controllers /generators is available in the
formats 96 mm x 96 mm and 96 mm x 48 mm (portrait and landscape format).
The instruments feature two 4-digit 7-segment displays, five or eight leds for indicating the
switching status and operating modes, an 8-digit matrix display, as well as six keys for
operation and configuration.
The user has flexibility in assigning the slots of the profile controller according to the block
structure.
10 profile programs with up to 100 segments can be programmed; a total of 100 segments
is available.
additional functions include self-optimisation, parameter set switching, a real-time clock, up
to 8 limit comparators and a maximum of eight operating contacts.
linearisations for conventional transducers are stored in the memory; furthermore, a custom-
ized linearisation table can be programmed.
The profile controllers can be adapted to a variety of tasks with the aid of a maths module.
The instruments can be integrated into a data network via a serial interface, or they can be
expanded through an external relay module.
A setup program with a program editor is available for easy configuration from a PC.
The electrical connection is at the rear by screw terminals.
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| Conductivity Analog Controller | | |
| 4 models to choose from
Hi 8931 is a panel-mounted conductivity controller designed for simplicity of use in a wide range of industrial process applications.
The instruments are designed with a standard din panel mount with membrane keypads and large lcd with backlight on the front, and provide a eries of autodiagnostic functions.
Probes, power supply, contacts and recorders are connected on the rear panel through screw terminals.
Using hi 8931 in conjunction with a 4-20 ma output transmitter (hi 8936 or hi 8936l series) will assure you of a strong, interference free signal at distances up to 300 meters (1000').
For in-line applications use the hi 7635 probe, while for tanks the hi 7638 with external threads is recommended. These probes are provided with uilt-in ntc sensor for temperature compensated conductivity measurements. The probe cable length is 3 meters (10').
Hi 8931 also features a direct connection up to 20 m (67'), without intermediate amplifiers to the conductivity probe. Hi 7638 conductivity probe eatures a din connector and automatic temperature compensation. |
| Conductivity Analog Controller (HI 943500) | | |
| 4 models to choose from
These controllers allow direct connection of a potentiometer conductivity probe (hi 7638) with a cable up to 20 meters long, without using any transmitter.
Four different models are available with different measurement ranges, to satisfy any application requirements.
The output configuration for connecting a recorder or a plc can be chosen between 0-20 or 4-20 ma.
The LED on the front panel indicates the operating status of the controller.
The automatic temperature compensation (atc) is performed directly by the hi 7638 probe with built-in temperature sensor. The front panel is protected behind a transparent splash-proof cover. - Direct connection of up to 66' without the need for intermediate amplifiers to the hi 7638 probe
- Automatic diagnostic controls
- Available in four models, each with a different measurement range
- Operational mode led indicators
- Automatic temperature compensation with hi 7638 potentiometric conductivity probe
- Transparent splash-proof cover included
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| Panel Mounted Dissolved Oxygen Controller (HI 8410) | | |
| Reliable do control
The hi 8410 is an extended range panel mounted dissolved oxygen (do) controller that is used to maintain and monitor the concentration of do in a wide range of applications from wastewater treatment to aquaculture. The hi 8410 uses a galvanic probe and typically requires less maintenance than a polarographic style making it ideal for long term monitoring of aeration basins, ponds, and lakes. The set point for controlling he activation of a relay is adjusted manually by the user. An alarm relay is also manually adjustable and is based upon a tolerance from the programmed set point. Calibration is single set point and can be done in zero oxygen solution.
The dosage mode: automatic, continuous on or off and over dosage control by setting the overtime dosage trimmer. If the dosing relay remains continuously activated for more than the selected dosing time, the alarm relay is activated, the alarm led will start blinking and the dosing relay will be deactivated. A jumper found on the rear panel can disable the over time dosageﾔ function.
Automatic/off/manual dosing selection switch and led on the front panel.
In automatic mode all the relays are controlled based on the measurement set point and alarm values. In off mode the dosing and alarm relays are always deactivated. The dosing led is off (as relay status) and the alarm led is in accordance with the instrument setpoint, input reading, and alarm.
In on (manual) mode the dosing relay is always on. The alarm relay is still enabled. If an alarm occurs the dosing relay remains activated. If the over dosage time exceeds the setting during manual mode, the alarm relay remains activated.
The front panel is protected behind a transparent splash-proof cover. |
| pH Digital Controllers pH 500 | | |
| Panel-mount controller
PH 500 series of controllers are simple-tooperate, microprocessor-based process meters packed with features. For more flexibility and better resolution for chart recorders, any two points between 0 and 14 ph can be chosen to correspond to the analog output spans. Several ph 500 models are equipped with a bi-directional rs232 port. Push button password programming prevents tampering. The microprocessor memory is fully programmable and has a 3 month backup power supply.
The fail safe alarm system protects the ph 500 against the pitfalls of process control, like power interruption or line failure. With ph 500 quick 1, 2 or 3 point calibration at ph 4. 01, 7. 01 and 10. 01 comes standard. The temperature can be manually or automatically compensated for. Models with rs232 output allow computer compatibility, a necessity for process control instrumentation. You can Also choose from on/off or proportional dosage to save on chemicals. |
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