The 9600 is a miniature space saving DIN rail mount loop powered isolator designed specifically to eliminate ground loop measurement problems. The unit generates an output current in a load which is the same as the input current but galvanically isolated. The unit boasts galvanic isolation in excess of 1000V between input and output and requires no additional power supply. The 9600 is available in single or dual input/ouput versions. The dual unit can also be used to obtain two isolated outputs from one input (wire in series).
The Calog LOOP II is a high precision, multi-function, hand-held calibrator designed for the process control industry. It’s speciality is milliamp loop powered instruments which it can measure, source and simulate. DC voltage and circuit continuity can also be measured.
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The CALOG-TEMP, Multi-Function Temperature Calibrator is a high-precision, hand-held calibrator for the calibration and troubleshooting of process control instrumentation. The CALOG-TEMP simultaneously measures and sources ten types of thermocouples and seven resistance temperature detectors (RTD), whilst automatically capturing the calibration results. It measures milliamps whilst sourcing or simulating millivolts, TCs, RTDs or ohms to calibrate transmitters. The CALOG-TEMP logging facility stores data on the SD card supplied, which is easily downloaded to a PC via the onboard USB port and usable in most of the common spreadsheet formats. The trend feature is ideal for graphing temperature profiles and PID controller optimization with a programmable timebase. In addition, the CALOG-TEMP has the functionality necessary to install and maintain all powered and non-powered transducers using the built-in 24V loop power supply. The CALOG-TEMP is the economical choice for people wanting to do industrial field or workshop calibration.
The CALOG - PRESSURE II’s speciality is pressure measurement and milliamp loop powered instruments which it can measure, source and simulate. DC voltage and circuit continuity can also be measured. Interchangeable pressure sensors enable users to effortlessly connect a wide range of pressure sensors. Simultaneous measurement of pressure and current for I/P testing. Pressure switch test feature ensures accurate and safe calibration of pressure switches. The CALOG - PRESSURE II’s logging facility stores data on the SD card supplied, which is easily downloaded from the SD card to a PC via the on board USB port and useable in most common spreadsheet formats. It’s small size, Lithium Ion battery pack and high precision makes the CALOG - PRESSURE II ideal for industrial field calibration
The CALOG-LC II Calibrator is ideal for testing 4 and 6 wire loadcells, checking insulation breakdown, weighing system calibration and simulation. It can test a loadcells' zero balance, input resistance, output resistance, bridge balance, 50V DC insulation test from bridge to shield, bridge to housing and shield to housing. The CALOG-LOADCELL II Calibrator is a hand-held precision calibrator specifically designed for load cell testing, including insulation breakdown and weighing system calibration or simulation. Simply connect a strain-guage load cell to the spring terminals and press "TEST LOADCELL". The backlit graphics will display four or six wire, zero balance, input or output resistance and bridge balance. It can then carry out a 50 VDC insulation test form bridge to shield, bridge to housing and shield to housing. For system testing and calibration the CALOG-LOADCELL II Calibrator can simultaneously measure mV (with mass display), excitation voltage and mA. In source mode, used for load cell amplifier pre-calibration testing, it can source mV (with mass display), measure excitation and measure mA. In simulate mode it sources a mA signal to the control room or SCADA. The display can be in mA, mA and mass or mass and mA.
The DPM9004 is a miniature space saving 92mm x 92mm x 26mm DIN-rail mount programmable load cell transmitter. Configuration and field calibration is done via a notebook or desktop PC using the user-friendly software available from our website. Complete 3-way isolation is provided between power supply, input and output. The transmitter is designed for mV inputs from load cells, strain gauges and strain gauge pressure transmitters. The stable bridge excitation voltage is user selectable for normal or IS (barriered) applications, and can power four load cells with the standard 10V excitation. Sense feedback is included to compensate for cable loss. The precision instrumentation op-amp front end circuit ensures high accuracy & stability. The digital filter feature allows for a stable output in noisy systems. The isolated analogue output is configurable for industry standard 0-10V or 0-20 / 4-20mA signals. The RS-232 serial interface and a remote tare function is standard. The serial interface allows connections to remote computers and SCADA systems using DPM’s DIGIbus protocol. The RS-485 option allows up to 99 transmitters to be linked on the same bus. A feature of this programmable transmitter is the calibration method. Pre-calibrated ranges can be allocated zero and full scale values and these can be adjusted on site via a notebook to allow for dead-weight offset and a single point span calibration (test weight trim).
The DPM9244 is a miniature space-saving 92mm x 92mm x 26mm DIN-rail mount programmable load cell transmitter. Configuration and field calibration is done via a notebook or desktop PC using the user-friendly software available from our website. Complete 3-way isolation is provided between the power supply, input and output.
The DPM9006 is a miniature space saving 92mm x 92mm x 26mm DIN rail mount AC voltage or current programmable transmitter. The unit can accept voltages up to 500Vac/dc and currents up to 5Aac/dc, and converts them to an isolated 0-10V, 0-20mA or 4-20mA output. Configuration / programming of the unit is accomplished by using a notebook computer or a desktop PC using user-friendly software available from our website. This transmitter offers complete 3-way isolation between power supply, input and output. The power supply is 95-265Vac/dc as standard. The RS-232 serial interface is standard. The serial interface allows connections to remote computers and SCADA systems using DPM’s DIGIbus protocol. The RS-485 option allows up to 99 transmitters to be linked on the same bus.
4-Way 3-pole PT100/Thermocouple selector switch
6-Way 2-pole PT100/Thermocouple selector switch
The DPM5012 is a 5 ½ digit (-199999 to 999999) has uni-polar and bi-polar pulse / frequency inputs for counting, frequency / speed (dual channel), period, flow, timing, totalising and positioning applications. It can be used in conjunction with most standard pulse / frequency generating sensors. Sensor excitation is standard and the output voltage is link selectable. Options include analogue output, alarm setpoints (up to 4 alarms), BCD output. RS-232 or RS-485 communications and many more. The display and analogue output is programmable from the front push buttons. Selected options now feature ‘Plug and Play’ technology allowing options boards to be ordered separately and field fitted when required
As a universal indicator, the instrument is fully programmable from the front push buttons for decimal point selection, scaling, positive or negative logic, parallel or multiplexed BCD input, Gray Code input & Binary input. The panel mount housing is a standard DIN 48mm x 96mm size. Applications include displays for PLC outputs for process control, & displays for absolute shaft encoders. Options include programmable analogue output, one, two, three or four alarms, RS-232 output etc. The analogue output is programmable from the front push buttons. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
The Model 4011 (4 digit) & Model 5011 (5½ digit) LED serial input indicators are used for remote display of serial data of numeric & alpha-numeric format. These indicators are ideal for applications where multiple slave display units are required. The indicators utilise DPM's ASCIIbus protocol for easy implementation into almost any system. The indicators come with a choice of either RS-232 input or RS-485 input for bus systems. The display may be set to flash on and off whenever the indicator does not receive valid refresh data within a specified time period. Options include programmable analogue output, one, two, three or four alarms, BCD output and other options. The analogue output option is rangeable from the front pushbuttons. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
The DPM4001, four digit LED Universal Process Indicator, can be applied to most process variables with analogue & digital inputs. This high accuracy, high-quality panel meter is designed for accurate measurement & display of pressure, level, flow, frequency, DC voltages or currents & revolutions per minute. Options include linearisation, analogue output and set-points up to a total of four. The display & analogue output is rangeable from the front pushbuttons. Excitation is standard & is link selectable for 2-wire / 3-wire transmitters, encoders & potentiometer input.
These high accuracy, high quality LED indicators are used for universal process, counting and frequency applications. The -T option includes process integration / totalisation function. These indicators can be applied to most process variables with analogue & digital inputs, such as the measurement & display of pressure, level, flow, frequency, DC voltages or currents & revolutions per minute. Options include linearisation, analogue output and set-points up to a total of four. The display & analogue output is rangeable from the front pushbuttons. Excitation is standard & is link selectable for 2-wire / 3-wire transmitters, encoders & potentiometer input. Selected options feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
The DPM4015, 4 digit (-1999 to 9999), LED Dual Channel Process Indicator can be applied to many applications which require a dual input and a single display eg. temperature and humidity monitoring. Each channel is individually setup for zero , span, input type and more. The unit boasts a number of useful mathematical functions such as addition, subtraction, multiplication and division. The display as well as alarms, analogue out and peak hold can be selected using channel A, Channel B and the above mentioned mathematical functions. Options include linearisation, analogue output and set-points up to a total of four. Excitation is standard and link selectable for 2-wire / 3-wire transmitters and a potentiometer input. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required
The DPM5015, 5 ½ (-199999 to 199999), LED Dual Channel Process Indicator can be applied to many applications which require a dual input and a single display eg. temperature and humidity monitoring. Each channel is individually setup for zero , span, input type and more. The unit boasts a number of useful mathematical functions such as addition, subtraction, multiplication and division. The display as well as alarms, analogue out and peak hold can be selected using channel A, Channel B and the above mentioned mathematical functions. Options include linearisation, analogue output and set-points up to a total of four. Excitation is standard and link selectable for 2-wire / 3-wire transmitters and a potentiometer input. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
The Model 5016, is a 2 by 3 Digit (-99 - 199) LED Dual Channel Process Indicator which can be applied to many applications which require a dual input and a dual display eg. Temperature and humidity monitoring. Each channel is individually setup for zero , span, input type and more. The display as well as alarms, analog out, peak hold can be selected using channel A or Channel B. Options include linearisation, analogue output and set-points up to a total of four. Excitation is standard and is link selectable for 2-wire / 3-wire transmitters and a potentiometer input. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
The DPM5600, a six digit LED Universal Process Indicator can be applied to most process variables with analogue & digital inputs. This high accuracy, high-quality panel meter is designed for accurate measurement & display of pressure, level, flow, frequency, DC voltages or currents & revolutions per minute. Options include linearisation, analogue output and set-points (up to a total of four). The display & analogue output is programable from the front push buttons. Excitation is standard & link selectable for 2-wire / 3-wire transmitters, encoders & potentiometer input. Selected options now feature ‘Plug & Play’ technology, allowing option boards to be ordered separately & field fitted when required.
These high accuracy, high quality LED indicators are used for universal process, counting and frequency applications. The -T option includes process integration / totalisation function. These indicators can be applied to most process variables with analogue & digital inputs, such as the measurement & display of pressure, level, flow, frequency, DC voltages or currents & revolutions per minute. Options include linearisation, analogue output and set-points up to a total of four.
The Series PD-39 X does not measure the differential pressure directly – instead, it uses two absolute pressure sensors to take the measurement indirectly. As well as reducing costs, this differential pressure transmitter is also more robust in relation to unbalanced (one-sided) overloading. The differential pressure range should be at least 5% of the standard pressure range. Each pressure side has two pressure connections, so the Pressure measurements can be displayed and recorded on PC or Laptop with help of the software ControlCenterSeries30 (CCS30) and a seriel interface cable. Export of recordings to usual file formats possible. Up to 128 devices can be connected together into a KELLER Bus-system. The Series PD-39 X does not measure the differential pressure directly - instead, it uses two absolute pressure sensors to take the measurement indirectly. As well as reducing costs, this differential pressure transmitter is also more robust in relation to unbalanced (one-sided) overloading. The differential pressure range should be at least 5% of the standard pressure range. Each pressure side has two pressure connections, so the PD-39 X is easy to use in pressure lines So that the differential pressure can also be measured exactly if the standard pressure range/ differential pressure ratio is high, this series also features the tried-and-tested microprocessorbased technology that is used in Series 30 X. All reproducible pressure sensor errors (i.e. nonlinearities and temperature dependencies) are entirely eliminated thanks to mathematical error compensation. The sensor signals are measured with a 16-bit A/D converter, so the individual standard pressure ranges can be measured to an accuracy of 0,05%FS throughout the entire pressure and temperature range. Digital Interface The transmitters have a bus-compatible two-wire RS485 half-duplex interface which is modelled on the ”MODBUS RTU”. KELLER offers interface converters to RS232 or USB for use here. The READ30/PROG30 program and the protocol are freely available. The interface offers these capabilities: - Readout of pressure and temperature values for both sensors. This allows readout of the diffe- rential pressure as well as the two standard pressure ranges. - Calibration of zero points and amplification. - Scaling of the analog output to different pressure ranges or units. - Configuration settings such as measurement rate, low-pass (LP) filter, bus address, etc. - Readout of information such as serial number, compensated pressure and temperature ranges, etc. Analog Output The analog output is freely scalable via the interface. For flow measurements, the root of the differential pressure can also be outputted. The calculated value can be outputted via an analog interface (0…10 V or 4…20 mA).
The Series 41 X combines the ceramic measurement cell for low pressure ranges with the µP electronics of the digital Series 30 transmitter. The pressure values from the signals of the pressure and temperature sensors are determined by polynomial compensation (see reverse). The values can be displayed and stored on a PC via an RS485 interface and programming can also be carried out. The transmitters are calibrated to the base range. The PROG30 software permits programming of the analog output signal in each section of the range within the base range (e.g. range 100 mbar. Output 4…20 mA for 20…60 mbar). With KELLER RS converters K-100 Series, up to 128 transmitters can be hooked together into a bus system and read by means of a PC or laptop. READ30 software allows the current pressure of each transmitter to be read or the pressure activity of several transmitters to be recorded or stored whilst “on line”.