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Related Manuals for Intab PC-Logger 2100
Summary of Contents for Intab PC-Logger 2100
- Page 1 PC-Logger 2100 user’s manual © INTAB Interface-Teknik AB September 2004...
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Page 3: Table Of Contents
5.3 External relay on digital output............23 5.4 Status Led on digital output .............. 23 MISCELLANEOUS ................23 6.1 Reset of the PC-logger 2100 ............. 23 6.2 Controller Program ................23 6.3 50/60Hz Adaption ................23 TECHNICAL DATA / SPECIFICATIONS.......... 23 7.1 ANALOGUE DATA ................ - Page 4 7.1.6 Resolution ................23 7.1.7 Accuracy................23 7.1.8 Temperature Coefficient ............23 7.1.9 Noise ..................23 7.1.10 Common mode ..............23 7.1.11 Constant Current Output ............23 7.2 DIGITAL PORTS - COUNTERS .............23 7.2.1 Digital Output................23 7.2.2 Pulse Inputs and Digital Inputs (at 25°C +/-10°C)....23 7.2.3 Auxiliary voltage output : V-Out ..........23 7.3 INTERNAL DATA STORAGE CAPACITY........23 7.4 COMPUTER INTERFACE ..............23...
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Page 7: Overview
, constitutes a versatile and powerful data acquisition/recording system. PC-logger 2100 is a complete logger useful for many purposes. It will, for example, easily replace/outdate any strip chart recorder. The logger measures the full range of industrial analogue signals: +/-10V, +/-1V and +/-20mA. -
Page 8: On-Line And Off-Line Recordings
Sampling Interval, Reduction Factor (Averaged Value), Number of channels used and of course if it is an On-line or Off-line recording. When using Intab's software, the user is always informed of how long the recording can last while entering the various parameters. -
Page 9: Functional Block Diagram
Functional Block Diagram The illustration above shows a simplified diagram of the building blocks of the 2100-logger. In addition to what is shown, there is separate power input and an auxiliary voltage output for supplying sensors. Note that the control program of the 2100 resides in RAM. This makes it a simple operation to modify or update the logger by simply downloading a new program from the computer: BOOT. -
Page 10: Display And Keys
The display has a built in lamp. Turn it on and off with the lamp key. To conserve power it will automatically be turned off after about 15 seconds. Note that "RECORD" will also contain the information "Recording on" if a recording is in progress. Page 4 INTAB Interface-Teknik AB, Sweden... -
Page 11: Power Requirements
Power Requirements The "2100 PC-logger" is normally powered by the supplied mains adapter. It supplies 12V at a max of 500mA. The 2100 is fitted with internal rechargeable batteries. They will give the user at least 8 hours of continuous operation without mains supply when fully charged. These batteries are trickle-charged by the mains adapter. -
Page 12: Analogue Inputs / Ranges
Each channel has an internal shunt (51ohms) that is used to measure current. It must be connected manually via an external jumper in the screw terminal (see Section 3.4.2.) NOTE that the shunt will overheat if subjected to more than 80mA. Page 6 INTAB Interface-Teknik AB, Sweden... -
Page 13: Temperature Measurements - T/C's
Temperature measurements - T/C's The "2100" is specially adapted for temperature measuring using thermocouples. The high resolution of the A/D converter makes it possible to record temperatures in excess of 1000°C with a resolution of 0.1°C using thermocouples of type "K". Thermocouples are active sensors that don't require powering to supply a signal. -
Page 14: Cold Junction Compensation
) is measured by a channel via the second pair of wires. The constant current is available at terminal "I-out" on the left-hand side of channel 1. Several Pt-100´s can be connected in series to the same current source. ( See next chapter ). Page 8 INTAB Interface-Teknik AB, Sweden... -
Page 15: Connections
Power can also be connected via screw terminals Vin and Gnd. They are paralleled by pins 3 and 2 respectively. Computer The PC-logger 2100 connects to a serial port of a computer via supplied spiral cable. The 15 pin D-sub connectors has the following pins and signal names: pin no. -
Page 16: Connecting Sensors And Transducers
For differential measurements you connect the two signals between ground and "+", and ground and "-". For single ended signals you connect a jumper between "-" and "Gnd" of respective channel. Page 10 INTAB Interface-Teknik AB, Sweden... -
Page 17: Differential Inputs
3.3.1 Differential Inputs OBSERVE !!! When connecting signals from sensors and/or transducers some simple rules about referencing them to logger signal ground must be followed. All analogue channels are differential with a very high impedance to signal ground. Their inputs have no internal connection to signal ground. Differential channels measure (as the name implies) the difference in voltage between the + and the - in relation to signal ground. -
Page 18: Common Mode
Those users who always have "floating" signals should "ground" all negative inputs by connecting a short jumper between "-" and "Gnd" of the terminals of each channel. It should also be pointed out that water must, almost invariably, be considered to be a conductor. Page 12 INTAB Interface-Teknik AB, Sweden... -
Page 19: Examples
Examples Below follow a few examples of how to connect different sensors and signals to the "2100". It is always a good idea, not to say good practise and a sign of competence, to first draw a schematic diagram of how sensors are to be connected to the PC- logger and how they may be interconnected. -
Page 20: 20Ma Current Loops
(like safety earth/ground)! This, of course, also does not necessarily mean that it is floating with respect to other grounds! Confused? - Get an electronics engineer to help you! Page 14 INTAB Interface-Teknik AB, Sweden... - Page 21 3) Connecting two wire transmitters using "2100" V-Out as power source: The auxiliary V-Out can be used to power external equipment like 20mA transmitters. It is actually just the mains adapter voltage that is passed on to the screw terminal. In the example at left the V-out supplies power to the transmitter.
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Page 22: Voltage Output Transducers
("Gnd" for all channels are really the same point with several connections 2) Connecting "floating" signals: Each individually "floating" source must be referenced to "2100" Gnd by shorting "-" to "Gnd" with a piece of wire. Page 16 INTAB Interface-Teknik AB, Sweden... -
Page 23: Rtd (Pt100) Sensors
3.4.4. RTD (Pt100) sensors Using the built-in (I-Out) constant current source (0.500mA) and "four wire technique" it is easy to measure resistance. In a Pt100, resistance varies with temperature. The relationship between temperature and resistance is very nearly linear. Several Pt100 sensors can be connected in series to the same current source. See figure below. -
Page 24: Common Errors When Connecting Transducers
2) "Floating" signals with no Gnd reference : A common battery is connected between "+" and "-" of a channel. There is no connection to "2100" Gnd. Solution : Place a jumper between "-" and "Gnd" of the terminals! Page 18 INTAB Interface-Teknik AB, Sweden... -
Page 25: Digital Ports - Counters
DIGITAL PORTS - COUNTERS The "2100" has, in addition to the 8 analogue inputs, three digital ports. These ports, called P1, P2 and P3, have their main use in pulse-counting applications. P1 can also be programmed as an output for alarm related purposes. Pulse counting channels have channel numbers 25 to 27. -
Page 26: Digital Inputs
"sensors" or fitted with filters if the electrical environment is noisy. Digital Output The digital output is mainly used as an alarm output. It may also be used for switching purposes, e.g. switching power to external equipment. The EasyView Pro software supports alarm programming. Page 20 INTAB Interface-Teknik AB, Sweden... -
Page 27: Connect Digital Ports
CONNECT DIGITAL PORTS The digital ports are multifunctional. The same pins are used for status input, counter input and alarm output. This makes it absolutely necessary to exercise utmost care when connecting external equipment to them. The schematic diagram below shows the details of one of these ports (P1). Ports P2 and P3 are identical but do not have the output transistor (the parts within dashed lines). -
Page 28: Switch / Relay On Digital Input
TTL and CMOS signals are easily connected. No special interface is needed. Just make sure that the signal grounds of the two systems interconnected this way are also connected. Make sure that all signals are below the absolute maximum of 20V. Page 22 INTAB Interface-Teknik AB, Sweden... -
Page 29: External Relay On Digital Output
External relay on digital output The digital output is designed as a relay driver. It will activate an external relay that in its turn will start an alarm bell or siren. The relay is easily connected. Simply follow the diagram below. Make sure that the current I-Rel doesn't exceed 100mA. -
Page 30: Miscellaneous
MISCELLANEOUS Reset of the PC-logger 2100 The PC-logger model 2100 can be reset by temporarily shorting sockets 7 and 8 of the 15 pole D-sub connector. Resetting the logger will result in it loosing its internal controller program, all measurement parameters and all measurement data it may have stored. -
Page 31: Technical Data / Specifications
TECHNICAL DATA / SPECIFICATIONS ANALOGUE DATA 7.1.1 Method of measurement ∆-∑-conversion. 7.1.2 Measurement interval Programmable in 1s steps - min 1s All channels are sampled with the same ∆t All channels sampled within the same second. 7.1.3 Inputs 8 differential inputs. Impedance : Min 400kΩ... -
Page 32: Resolution
Common mode range all other ranges min +/- 10V. CMRR: (dc) min 80dB 7.1.11 Constant Current Output The constant current output supplies 0.500mA into loads of a maximum of 5kΩ. Accuracy +/-0.2% at 25°C. Tempco max 50ppm/°C Page 26 INTAB Interface-Teknik AB, Sweden... -
Page 33: Digital Ports - Counters
"2100" goes back to sleep. INTERNAL DATA STORAGE CAPACITY The PC-logger 2100 can store in excess of 112 000 values (off-line). The data RAM is backed up by a lithium battery that will retain data in case of power failure. -
Page 34: Computer Interface
Should be left on charge even when not to be used for longer periods Capacity: At least 8 hours continuous operation with fully charged accumulators. 7.5.2 Mains Adapter Voltage: 12-18V Current: Min 250mA MECHANICAL Length: 247mm Height: 110mm Width: 36mm Weight: 1.1kg Page 28 INTAB Interface-Teknik AB, Sweden... - Page 35 We believe the information in this manual to be correct. Should there arise questions about the validity or meaning of information herein we appreciate if information about this could be forwarded to us. Because development work continuously improves our products we reserve the right to make changes without any notice.
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Page 36: Questions And Answers
Select an interval of 6 seconds for a week long recording on one channel. You don't really have to make calculations like this. The software will always tell you how long the memory will last for every set of parameters you program. Page 30 INTAB Interface-Teknik AB, Sweden... -
Page 37: Index
INDEX Flow sensors, 19 frequency response, 21 50Hz, 24 ground loop, 16 60Hz, 24 ground loops, 14 Accumulating mode, 19 hot junction, 8, 13 air temperature, 13 alarm output, 20 Impedance, 25 integration time, 24 batteries, 5 I-out, 8 Block Diagram, 3 I-Out, 10 boot, 24 Booting, 24... - Page 38 9 shunt, 6, 15, 25 SPECIFICATIONS, 25 T/C, 13 TECHNICAL DATA, 25 Terminal assignment, 10 thermocouples, 7 Thermocouples, 13 Thermoelectric voltage, 7 transmitters, 15 trickle-charged, 5 TTL, 22 V-In, 10 V-Out, 10, 15 Page 32 INTAB Interface-teknik AB Sweden...
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