Data Acquisition Modules - Current Measurement - Rhopoint Components

DGH D7100 Ethernet MODBUS TCP/IP Analog Voltage Input Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D7100 7-channel voltage input module is part of the DGH’s D7000 data acquisition module family supporting RJ-45 Ethernet interface and communication via MODBUS TCP/IP protocol. This input module measures signal across six different voltage ranges (±25mV, ±50mV, ±100mV, ±1V, ±5V and ±10V) and continuously converts the data at the rate of up to 25 conversions per second, storing the latest result in the buffer. The data (unsigned integer percentage of full-scale values) can then be retrieved by sending a Modbus query to the module from the host processor. The D7100 voltage input module can be directly connected to a wide range of sensors and annunciators, and provides all signal conditioning and linearisation, while containing no pots or DIP switches. The D7100 series of modules also features peer-to-peer (P2P) mode, allowing sending signal from analog input to analog output module, or digital input to digital output module without the need to involve a host computer. They are also able to upload information to cloud using ThingSpeak platform, and send e-mail notifications via Gmail free e-mail service (a limit value can be set for each channel separately, triggering the notification e-mail). For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D7100 module is compatible with any commercial software supporting Modbus TCP/IP ethernet protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D7000 modules, it provides the complete, customised data acquisition system for given application.

7-channel differential analog voltage input module
Measures 6 different ranges: ±25mV, ±50mV, ±100mV, ±1V, ±5V and ±10V
Modbus TCP/IP communication protocol
RJ-45 Ethernet inteface – both 10MB and 100MB
User-selectable features include analog input range per channel, baud rate, device address, filtering constants and others
16-bit ADC, 25/20 conversions per second (total across the enabled channels)
Compatible with all commercial software programs supporting Modbus TCP/IP protocol
Accuracy: ±0.05% of full scale maximum
Span temperature coefficient: ±50ppm/°C maximum
Input burnout protection to 250 Vac
Input impedance: 20MΩ minimum
Power requirements: Serial = 1.4W
Temperature range -25°C to +70°C
Mix and match with other D7000 modules to build a complete, customised data acquisition system

The applications for the D7000 data acquisition modules include:

Process monitoring and control
Remote data logging to any host computer
Product testing
Peer-To-Peer Communication

The post DGH D7100 Ethernet MODBUS TCP/IP Analog Voltage Input Module appeared first on Rhopoint Components.

DGH D5200M MODBUS Analog Current Input Module Series

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D5200M current input module is part of the DGH’s D5000M low cost multichannel MODBUS data acquisition module family. This module features four channels accepting 4-20mA input and converts the signal to digital data at the rate of 8 conversions per second, then converts the data to engineering units using the lookup tables, storing the latest data in the buffer. The data can be retrieved by sending an appropriate command from the host computer. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings, meaning the values are maintained in the event of power loss. The D5200M comes pre-set with default values of 300 baud, one start bit, eight data bits, one stop bit, no parity and any address recognized, but these values can be easily changed by the user. The modules are designed to be compatible with all popular computers utilising RS-232 or RS-485 port and no software is necessary to start using them, although the utility software is provided. The D5200M can be mounted on a DIN-rail if required (MK-1 mounting kit required) and can be combined with other D5000M series modules to build a low cost data logger or a data acquisition system for given application.

Four channel analog-to-digital current input module
Choice of RS-232 or RS-485 output
4-20mA input
Communicates using DGH ASCII or MODBUS RTU protocol
User-selectable features include analog input range, baud rate, parity type and others
Accuracy: ±0.04% of full scale
Resolution: 0.04% of full scale
Span temperature coefficient: ±50ppm/°C maximum
Voltage drop: 1.0V maximum
Zero drift: ±1 count maximum (autozero)
RS-232 versions are limited to one ADC per serial port (due to MODBUS RTU not supporting echoing)
Power requirements: Serial = 0.75W
Temperature range -25°C to +70°C

The applications for the D5500M data acquisition modules include:

Process monitoring and control
Remote data logging to any host computer
Product testing
Direct connection to modems

The post DGH D5200M MODBUS Analog Current Input Module Series appeared first on Rhopoint Components.

DGH D5100M MODBUS Analog Voltage Input Module Series

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D5100M voltage input module is part of the DGH’s D5000M low cost multichannel MODBUS data acquisition module family. This module features four channels, each accepting voltage input signal from the choice of five different voltage ranges (±100mV, ±1V, ±5V, ±10V and ±100V) and continuously converts the data at the rate of 8 conversions per second, then converts the digital data to engineering units using the lookup tables, storing the latest data in the buffer. The data can be retrieved by sending a command from the host computer. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings, meaning the values are maintained in the event of power loss. The D5100M comes pre-set with default values of 300 baud, one start bit, eight data bits, one stop bit, no parity and any address recognized, but these values can be easily changed by the user. The modules are designed to be compatible with all popular computers utilising RS-232 or RS-485 port and no software is necessary to start using them, although the utility software is provided. The D5100M can be mounted on a DIN-rail if required (MK-1 mounting kit required) and can be combined with other D5000M series modules to build a low cost data logger or a data acquisition system for given application.

Four-channel analog-to-digital voltage input module
Choice of RS-232 or RS-485 output
Choice of 5 different ranges: ±100mV, ±1V, ±5V, ±10V and ±100V
Communicates using DGH ASCII or MODBUS RTU protocol
User-selectable features include analog input range, baud rate, parity type and others
Accuracy: +/-0.02% of full scale
Resolution: 0.01% of full scale
Span temperature coefficient: ±50ppm/°C maximum
Input burnout protection to 250 Vac
Input impedance: ≤±1V input =100MΩ minimum and ≥±5V input =1MΩ minimum
RS-232 versions are limited to one ADC per serial port (due to MODBUS RTU not supporting echoing)
Power requirements: Serial = 0.75W
Temperature range -25°C to +70°C

The applications for the D5100M data acquisition modules include:

Process monitoring and control
Remote data logging to any host computer
Product testing
Direct connection to modems

The post DGH D5100M MODBUS Analog Voltage Input Module Series appeared first on Rhopoint Components.

DGH D8200 Analog Current Input USB Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D8200 7-channel current input module is part of the DGH’s D8000 data acquisition module family with USB interface. This input module measures signal from a 4-20mA range and continuously converts the data at the rate of up to 25/20 conversions per second, storing the latest result in the buffer. The D8200 modules communicate in MODBUS RTU protocol; the data can therefore be retrieved by sending a MODBUS query to the module from the host computer. The D8200 current input module can be directly connected to a wide range of sensors and annunciators, and provides all signal conditioning and linearisation, while containing no pots or DIP switches. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D8200 module is compatible with any commercial software supporting Modbus RTU protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D8000 series modules, a complete, customised data acquisition system can be built easily.

7-channel differential analog current input module
Input range: 4-20mA
Modbus RTU protocol
Connects to the computer via the USB interface
User-selectable features include analog input range per channel, baud rate, parity type, digital filtering and others
16-bit ADC, 25/20 conversions per second
Compatible with all commercial software programs supporting Modbus RTU protocol, including programs from Wonderware, DreamReport, National Instruments Labview, Indusoft and others
Accuracy: ±0.05% of Full Scale maximum
Span temperature coefficient: ±50ppm/°C maximum
Voltage drop: 2.0V maximum
Input impedance: <100Ω (70 typical)
Power requirements: Serial = 1.4W
Temperature range -25°C to +70°C
Mix and match with other D8000 modules to build a complete, customised data acquisition system

The applications for the D8000 data acquisition modules include:

Process monitoring and control
Data logging to any host computer
Product testing

The post DGH D8200 Analog Current Input USB Module appeared first on Rhopoint Components.

DGH D8300 Analog Thermocouple Input USB Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D8300 7-channel thermocouple input module is part of the DGH’s D8000 data acquisition module family with USB interface. This input module measures signal from a choice of eight different thermocouple types (J, K, T, E, R, S, B and C) and each channel can be programmed for a different range. It then continuously converts the data at the rate of up to 25/20 conversions per second, storing the latest result in the buffer. The D8300 modules communicate in MODBUS RTU protocol; the data can therefore be retrieved by sending a MODBUS query to the module from the host computer. The D8300 thermocouple input module can be directly connected to a wide range of sensors and annunciators, and provides all signal conditioning and linearisation, while containing no pots or DIP switches. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D8300 module is compatible with any commercial software supporting Modbus RTU protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D8000 series modules, a complete, customised data acquisition system can be built easily.

7-channel differential analog thermocouple input module
Choice of 8 different thermocouple types: J, K, T, E, R, S, B and C (see Specification tab for temperature ranges)
Modbus RTU protocol
Connects to the computer via the USB interface
User-selectable features include analog input range per channel, baud rate, parity type, digital filtering and others
16-bit ADC, 25/20 conversions per second
Compatible with all commercial software programs supporting Modbus RTU protocol, including programs from Wonderware, DreamReport, National Instruments Labview, Indusoft and others
Accuracy (error from all sources at 0-40°C ambient): ±1.5°C maximum (J, K, T, E) or ±3.5°C maximum (R, S, B, C)
Automatic cold junction compensation
Input burnout protection to 250 Vac
Input impedance: 20MΩ minimum
Lead resistance effect: <40μV per 350Ω
Open thermocouple and over range indication
Power requirements: Serial = 1.4W
Temperature range -25°C to +70°C
Mix and match with other D8000 modules to build a complete, customised data acquisition system

The applications for the D8000 data acquisition modules include:

Process monitoring and control
Data logging to any host computer
Product testing

The post DGH D8300 Analog Thermocouple Input USB Module appeared first on Rhopoint Components.

DGH D8400 Analog Voltage, Current and TC Input USB Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D8400 7-channel voltage, current and thermocouple input module is part of the DGH’s D8000 data acquisition module family with USB interface. This module contains 7 user-programmable inputs; each can be assigned to a different input type (voltage, current or thermocouple). The specification is identical to that of input-type specific modules D8100 (voltage), D8200 (current) and D8300 (thermocouple).
The module continuously converts the data at the rate of up to 25/20 conversions per second, storing the latest result in the buffer. The D8400 modules communicate in MODBUS RTU protocol; the data can therefore be retrieved by sending a MODBUS query to the module from the host computer. The D8400 module can be directly connected to a wide range of sensors and annunciators, and provides all signal conditioning and linearisation, while containing no pots or DIP switches. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D8400 module is compatible with any commercial software supporting Modbus RTU protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D8000 series modules, a complete, customised data acquisition system can be built easily.

7-channel differential analog voltage, current and thermocouple input module – each channel can be assigned to a different input type
Specification equivalent to input-specific modules D8100, D8200 and D8300
Choice of 6 different voltage ranges: ±25mV, ±50mV, ±100mV, ±1V, ±5V and ±10V
Current input range: 4-20mA
Choice of 8 different thermocouple types: J, K, T, E, R, S, B and C (see Specification tab for temperature ranges)
Modbus RTU protocol
Connects to the computer via the USB interface
User-selectable features include analog input range per channel, baud rate, parity type, digital filtering and others
16-bit ADC, 25/20 conversions per second
Compatible with all commercial software programs supporting Modbus RTU protocol, including programs from Wonderware, DreamReport, National Instruments Labview, Indusoft and others
Power requirements: Serial = 1.4W
Temperature range -25°C to +70°C
Mix and match with other D8000 modules to build a complete, customised data acquisition system

The applications for the D8000 data acquisition modules include:

Process monitoring and control
Data logging to any host computer
Product testing

The post DGH D8400 Analog Voltage, Current and TC Input USB Module appeared first on Rhopoint Components.

DGH D8500 Analog Voltage/Current Output USB Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D8500 2-channel voltage/current output module is part of the DGH’s D8000 data acquisition module family with USB interface. This analog output module generates DC voltage and current signals across voltage ranges of 0-10V, ±10V and current ranges of 0-20mA, 4-20mA, at the rate of 250 conversions per second. Utilising 12-bit digital-to-analog (DAC) converter, the user is able to select the output signal type for each channel and control both independently via a host computer using the Modbus RTU protocol. A range of additional programmable features is available, such as output slew rate, startup signal value or a communications watchdog times which can be used to move the analog output signal to a known “safe” condition in an event of communication failure. The D8500 output module contains no pots or DIP switches. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D8500 module connects to the computer via USB interface and is compatible with any commercial software supporting Modbus RTU protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D8000 modules, it provides the complete, customised data acquisition system for given application.

2-channel analog output module
Connects to the computer via USB interface
Voltage ranges: 0-10V, ±10V
Current ranges: 0-20mA, ±20mA
Modbus RTU protocol
User-selectable features include analog output type and range per channel, output slew rate, startup signal value, communication watchdog timer, baud rate, parity type and others
Two 12-bit DAC converters, 250 conversions per second
Compatible with all commercial software programs supporting Modbus RTU protocol, including programs from Wonderware, DreamReport, National Instruments Labview, Indusoft and others
Accuracy: ±0.1% of full scale maximum
Span temperature coefficient: ±25ppm/°C maximum
Settling Time to 0.1% of the full scale: 1ms
Communications watchdog timer
Current Output Compliance: ±12Vdc
Input burnout protection to 250 Vac
Power requirements: Serial = 2.1W
Temperature range -25°C to +70°C
Mix and match with other D8000 modules to build a complete, customised data acquisition system

The applications for the D8000 data acquisition modules include:

Process monitoring and control
Remote data logging to any host computer
Product testing

The post DGH D8500 Analog Voltage/Current Output USB Module appeared first on Rhopoint Components.

DGH D8710 Digital Input USB Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D8710 15-channel digital input module is part of the DGH’s D8000 data acquisition module family with the USB interface. This input module is able to monitor logic levels, contact closures, switch closures or dry contacts, utilising an internal 10K pull-up resistor on each input terminal. The input terminals can accept signals between ±30Vdc without damage. The D8710 input module can be directly connected to relays and annunciators. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D8710 module connects to the host computer via USB interface and is compatible with any commercial software supporting Modbus RTU protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D8000 modules, it provides the complete, customised data acquisition system for given application.

15-channel digital input module
Measures logic levels, contact closures, switch closures and dry contacts
Modbus RTU protocol
User-selectable features include device address, baud rate, parity type and others
Logic “0” = <1Vdc, Logic "1" = >3.5Vdc
Internal 10K pull-up resistors on each bit.
Connects to the computer via USB interface
Compatible with all commercial software programs supporting Modbus RTU protocol, including programs from Wonderware, DreamReport, National Instruments Labview, Indusoft and others
Input burnout to +/-30Vdc without damage
Isolation 500Vac, input common to system ground
Power requirements: Serial = 0.75W
Temperature range -25°C to +70°C
Mix and match with other D8000 modules to build a complete, customised data acquisition system

The applications for the D8000 data acquisition modules include:

Process monitoring and control
Remote data logging to any host computer
Product testing

The post DGH D8710 Digital Input USB Module appeared first on Rhopoint Components.

DGH D8720 Digital Output USB Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D8720 15-channel digital output module is part of the DGH’s D8000 data acquisition module family. This output module contains 15 individial open-collector transistor outputs to 30Vdc, 100mA maximum, and is able to control devices requiring an ON/OFF signal such as lamps, annunciators etc. The D8720 input module can be directly connected to relays and annunciators. A range of additional programmable features is available, such as baud rate, parity type, power-on bit state or a communications watchdog times which can be used to move the analog output signal to a known “safe” condition in an event of communication failure. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings such as the range, meaning the values are maintained in the event of power loss. The D8720 module is compatible with any commercial software supporting Modbus RTU protocol and is DIN-rail mountable (MK-1 mounting kit required). Combined with other D8000 modules, it provides the complete, customised data acquisition system for given application.

15-channel digital output module with open-collector outputs to 30Vdc, 100mA maximum
Vsat: +0.3Vdc max. at 100mA
Short circuit protection to 500mA
Modbus RTU protocol
User-selectable features include baud rate, parity typem, communication watchdog timer and others
Digital Output update rate, 4.5Hz
RS-485 serial communications interface
Compatible with all commercial software programs supporting Modbus RTU protocol, including programs from Wonderware, DreamReport, National Instruments Labview, Indusoft and others
Isolation 500Vac, input common to system ground
Power requirements: Serial = 1.0W
Temperature range -25°C to +70°C
Mix and match with other D8000 modules to build a complete, customised data acquisition system

The applications for the D8000 data acquisition modules include:

Process monitoring and control
Remote data logging to any host computer
Product testing
Direct connection to PLC

The post DGH D8720 Digital Output USB Module appeared first on Rhopoint Components.

DGH D5450M MODBUS Analog Thermistor Input Module

Admin — Mon, 23 Nov 2020 20:48:29 +0000

The D5450M thermistor input module is part of the DGH’s D5000M low cost multichannel MODBUS data acquisition module family. This module features four channels, each accepting thermistor input signal from thermistor type 2252Ω at 25°C. The signal is converted to digital data at the rate of 8 conversions per second, then to engineering units using the lookup tables, storing the latest data in the buffer. The data can be retrieved by sending an appropriate command from the host computer. For extra security, it utilises a non-volatile EEPROM (Electrically Erasable Programmable Read Only Memory) to store all user-selectable settings, meaning the values are maintained in the event of power loss. The D5450M comes pre-set with default values of 300 baud, one start bit, eight data bits, one stop bit, no parity and any address recognized, but these values can be easily changed by the user. The modules are designed to be compatible with all popular computers utilising RS-232 or RS-485 port and no software is necessary to start using them, although the utility software is provided. The D5450M can be mounted on a DIN-rail if required (MK-1 mounting kit required) and can be combined with other D5000 series modules to build a low cost data logger or a data acquisition system for given application.

4 channel analog-to-digital thermistor input module
Choice of RS-232 or RS-485 output
Input: 2252Ω at 25°C type thermistor
Range: 0°C to 100°C
Communicates using DGH ASCII or MODBUS RTU protocol
User-selectable features include °C or °F, analog input range, baud rate, parity type and others
Accuracy: ±0.1°C
Resolution: 0.01°C (or °F)
Input protection to 30Vdc
RS-232 versions are limited to one ADC per serial port (due to MODBUS RTU not supporting echoing)
Power requirements: Serial = 0.75W
Temperature range -25°C to +70°C

The applications for the D5450M data acquisition modules include:

Process monitoring and control
Remote data logging to any host computer
Product testing
Direct connection to modems

The post DGH D5450M MODBUS Analog Thermistor Input Module appeared first on Rhopoint Components.