Related Manuals for Intab PC-logger 3150
Summary of Contents for Intab PC-logger 3150
- Page 1 How to use PC-logger 3150 Hardware with accessories Interface-Teknik AB Gjutarevägen 1 SE-443 61 STENKULLEN Tel. +46(0)302-246 00 www.intab.se, info@intab.se Rev. E, January 2003...
- Page 2 MANUALS of the PC-Logger 3150 System: How to connect sensors and transducers -"How to Use PC-Logger 3150 " correctly -"EasyView - manual" A tutorial guide to a user-friendly expert data analysis program -"Command Manual" Describes the ASCII strings (used by...
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Page 3: Table Of Contents
ECORDINGS ........................2 LINE ECORDINGS ........................2 TORAGE APACITY 1.4.1 Storage capacity in Computer ..................... 3 1.4.2 Storage Capacity in the PC-Logger 3150................3 ........................... 4 LOCK IAGRAM )......................5 ISPLAY AND OPTION ..........................6 OWER SUPPLY INPUTS/RANGES ........................... 7 .................... - Page 4 ............................29 OWER ..................... 29 ECHANICAL SPECIFICATIONS OPTION: Digital I/O and Pulse Counters......31 OVERVIEW........................... 31 ........................31 IGITAL UTPUTS ........................... 32 IGITAL NPUTS 1.2.1 Opto isolated inputs ......................32 1.2.2 TTL-compatible inputs....................32 COUNTERS ........................... 33 ..........................33 ESET MODE ..........................
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Page 5: Main Unit
MAIN UNIT AN OVERVIEW General Information The PC-Logger 3150 is a very versatile addition to our line of Analog to ASCII Converters. It will cover the medium measuring rate range: up to a 1000 times per second. Input ranges are +/-10V; +/-1000mV; +/-100mV; +/-50mV; 20mA. -
Page 6: On-Line Recordings
LCD (see section 1.5). After all measurements are completed (see stop : section 4.2) the PC-Logger 3150 is again connected to a computer for transferral of collected data (X-fer). -
Page 7: Storage Capacity In Computer
The formula will then be: 0.1*64,000/(2*4)=800 seconds. Note: The internal memory of the PC-Logger 3150 will only store one recording at a time. Starting a new recording will erase the previous one. Recordings have to be transferred to your computer before loading new parameters or starting new measurements. -
Page 8: Block Diagram
Measurement data will also not be lost if the internal batteries run down. A back-up lithium battery will retain data for more than 10 years. Block Diagram This illustration shows a simplified block diagram of the PC-Logger 3150. The expert notes that all amplification takes place before the multiplexer. INTAB Interface-Teknik AB... -
Page 9: Display And Keys (Option)
Display and Keys (option) The LCD (Liquid Crystal Display) with adjacent keys are supplied with all PC-Logger 3150:s that are equipped with internal measurement data memory. This display and key combination is indispensable when making off-line recordings. You indicate which function you want using the up/down arrows and then confirm your choice with the OK-key. -
Page 10: Power Supply
Don't use sources supplying more than 16V as this is the maximum allowed. The PC-Logger 3150 will "fall asleep", if it isn't powered by an outside source, about two minutes after the last command or key-stroke has been entered. This feature saves your rechargeable batteries for when they are needed. -
Page 11: Inputs/Ranges
INPUTS/RANGES NOTE ! To get good results it is of utmost importance that all signals to be measured are connected correctly. Experience tells us that 95% of all problems (like noise, electrical interference, measurement errors etc.) are the result of incorrect connections and wiring. -
Page 12: Ranges: Voltage And Current
0.12% of FSR 30µV +/-20mA 0.12% of FSR 11µA Each channel has an internal 51Ω shunt that is used to measure current. It is connected into the input circuitry by putting the small DIP-switch in position "current". INTAB Interface-Teknik AB... -
Page 13: Connections
18 - 24VDC N.B. Connecting power through pin 3 is an alternative to pin 1 ! Computer PC-Logger 3150 connects to a serial port of the computer using the supplied spiral cable. The 15 pin D-Sub connector has the following pinouts:... -
Page 14: Inputs
The jack panel must be regarded as just an extension box and does NOT make familiarisation with the terminal area unnecessary. The user still has to determine how the dip-switches are to be programmed. INTAB Interface-Teknik AB... -
Page 15: Differential Inputs
3.3.1 Differential Inputs There are a two basic requisites that have to be fulfilled when connecting signals and/or sensors and transducers : 1 - No signal must be left floating with respect to logger signal ground. 2 - System grounds must be connected so that no ground loops are created. Use a one-point grounding scheme! The following sections will help in understanding how this can be achieved. -
Page 16: Common Mode
The inputs will not be damaged by voltages above this as long as they are within 30V off signal ground. The following sections of this manual will provide some examples of how transducers can be connected. INTAB Interface-Teknik AB... -
Page 17: Sensor Connection Examples
Sensor Connection Examples Transducers can supply signals of differing types. They are usually "single ended" or "differential" (ratiometric). Below are some examples of how they can be connected. Note that combinations are always possible. It is also always good practise to plan connections and to make a schematic diagram before actually doing them. - Page 18 4) Connecting two-wire mA transmitters powered by external source. Transmitters that require higher voltages have to be powered by an external source. Don't forget to put the dip- switch in position "Gnd" unless this source has some other connection to logger ground. INTAB Interface-Teknik AB...
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Page 19: Connecting Voltage Signals
3.4.2 Connecting Voltage Signals Voltage signals can be connected in two basic ways. Which one to use depends on whether the signal is "floating" or not. Combinations of the two methods are of course possible! Differential or ratiometric transducers may also be directly connected. 1) Connecting signals with common grounding Note that only one of the Diff/Gnd switches is in... -
Page 20: Common Connection Errors
A signal equivalent to a common flashlight battery is connected to + and - of one of the channels. Readings are unstable. Solution: give this signal a proper ground reference by shorting the negative input to logger ground by placing the Dip-switch in the "Gnd" position. INTAB Interface-Teknik AB... - Page 21 3) Common mode voltage too high. In many industrial applications, the signal from one mA transmitter may be monitored by several instruments. These are always connected in series. If the total series resistance of these instruments causes a voltage drop of more than 10V AND if it appears on the ground side of the logger, the common mode range is exceeded.
- Page 22 The V-out negative terminal is internally connected to logger ground. By connecting the negative input by placing the switch in the "Gnd" position one of the resistors in the bridge is effectively shorted. Solution : place the switch in the "Diff" position. INTAB Interface-Teknik AB...
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Page 23: Starting Recordings
As you have seen in the previous sections, there are two ways of recording data: on-line and off-line. Programs supplied with the PC-Logger 3150, guide the user through the set-up procedures necessary before recordings can be started. On-Line Recordings are initiated from the computer. -
Page 24: Start On Digital Input
There are four ways of stopping a recording: A key-stroke or A logical low at the trig input or An analog signal outside a programmed level or Memory full 4.2.1 Stop on key-stroke Any key-stroke will always stop a recording. INTAB Interface-Teknik AB... -
Page 25: Stop On Digital Signal
4.2.2 Stop on Digital Signal Recording parameters can be programmed so that a recording will stop as soon as the digital input detects a "low". A "low" is a voltage below 0.8V!. An "open" digital input is held low by an internal resistor. 4.2.3 Stop on Analog Level Recordings may be programmed to stop on a signal outside a programmed... -
Page 26: Trig Window - Pre/Post Trig Recording
Trig Window - Pre/Post Trig Recording The PC-Logger 3150 is often used as a trouble-shooter to catch transient events. The area of interest is often the time just prior to the fault condition and then a certain amount after. The fault condition would trigger the stop. -
Page 27: Illustration: Start, Stop And Trig Sequences
Illustration: Start, Stop and Trig Sequences MAIN UNIT STARTING RECORDINGS... -
Page 28: Trig Output
Logger 1 will trig Logger 2 as soon as it starts (or stops) storing values. Logger 2 has to be programmed to start and/or stop on a trig from the digital trig input. INTAB Interface-Teknik AB... -
Page 29: Miscellaneous
7 and 8 of the 15 pin D-Sub connector. A master reset will erase the internal program of the PC-Logger 3150. You will then have to re-boot the program from your computer. Make sure that you have the correct version of the PC-Logger 3150 program installed (the name of the bootable file is BFA_????.LDM ). -
Page 30: Technical Specifications
Min. +/- 1800 divs. on all ranges (No of divisions) Resultant resolution : 50mV range +/-30µV 100mV range +/-55µV 1000mV range +/-0.55mV 10V range +/-5.5mV 20mA range +/-11µA Uncertainty : @ 25°C 0.25% of FSR (all ranges) Tempco : 100ppm + offset drift INTAB Interface-Teknik AB... -
Page 31: Auxiliary Voltage Source
Offset: (@ 25°C) Initial : +/-½ division (=bit) Drift : 50mV range 72ppm/°C 100mV range 36ppm/°C 1000mV range 3.6ppm/°C 10V range 0.4ppm/°C 20mA range 3.6ppm/°C Common mode range at the: 50mV range +/-10V 100mV range +/-10V 1000mV range +/-10V 10V range +/-5V 20mA range +/-10V... -
Page 32: Storage Memory (Optional)
1 stop bit 19200 baud Signals : (pin no.) Hardware handshaking is employed. Handshaking : DTR : Signals that the logger is operational (output) CTS : Signal allowing the logger to transmit (input) Commands See separate manual: "Command manual". INTAB Interface-Teknik AB... -
Page 33: Power
Power Voltage 13 - 16 VDC Operating current Max 500 mA Mechanical specifications (Example) Width : 165 mm Length : 315 mm Height : 50 mm Weight : 1.7 Kg MAIN UNIT TECHNICAL SPECIFICATIONS... -
Page 35: Option: Digital I/O And Pulse Counters
OPTION: Digital I/O and Pulse Counters OVERVIEW The PC-Logger 3150 can, in addition to the analog inputs, be fitted with a digital I/O-interface. This digital board is mainly used in event-counting applications but can also be used where status or on/off signals must be detected. -
Page 36: Digital Inputs
This is the easily transformed into litres per second. The PC-Logger 3150 software can be said to be treating these values as if they were ordinary analog values or voltages. -
Page 37: Counters
COUNTERS The digital I/O card can be fitted with six sixteen bit counters. Each of these counts up to 65535 and then wraps around to zero. They can be read with constant time intervals resulting in measurements values representing pulses per delta-t. Flowmeters output a set number of pulses per given unit of volume. -
Page 38: Connections
DO 2b DI 6b = Auxiliary Power (for P) DO 2a DI 6a DO 1b DI 5b DO 1a DI 5a DI 4b DI 4a DI 3b DI 3a DI 2b DI 2a DI 1b DI 1a INTAB Interface-Teknik AB... -
Page 39: Digital Outputs
Digital outputs The digital outputs are in the form of four normally open relays. These potential free contacts are accessible on DO1a,b - DO4a,b; see figure. Switching Capability: DO b Power - 30W/50VA Voltage - 125V AC/150V DC DO a Current - 1.25A AC/DC RELAY SPST... -
Page 40: Opto Isolated
The TTL-compatible inputs (P = Pulse in) are connected as in the figure. Note that signal ground (GND) of the digital card has to be connected to signal ground of the system or transducer that is used with these inputs. TTL/CMOS AND/OR INTAB Interface-Teknik AB... -
Page 41: Technical Data
TECHNICAL DATA Digital Outputs No of outputs Type : Potential-free relay contacts (NO, SPST) Switching Power : 30W/50VA capability Voltage : 125VAC/150VDC Current : 125VAC/150VDC Max operating : 1A @ 60°C current Digital Inputs (@ 25C +/-10C) 4.2.1 Opto Isolated Inputs No of inputs "Low"... -
Page 42: Auxiliary Power
Auxiliary Power 4.3.1 for Opto-Couplers Voltage : mains adaptor output, max 15V. Current : mains adaptor rating -300mA or max 200mA 4.3.2 for TTL-Inputs Voltage : 4-6V Impedance : 1kΩ INTAB Interface-Teknik AB... -
Page 43: Index
INDEX dip-switches, 11 DTR, 9 duration, 2 Analog ground, 13 auxiliary voltage, 10 endless, 22 endless memory, 23 event counters, 32 batteries, 4 event-counting, 31 block diagram, 4 excitation voltage, 16 BOOT, 26 extension box, 11 bridge, 16 fall asleep, 6 car battery, 6 float, 13 channel input, 10... - Page 44 3 Power, 9 strain-relief, 10 power input return, 13 Successive approximation, 27 Power supply, 6 powered, 6 Pre/Post Trig, 23 pressure sensors, 16 T-in, 10 pre-trig, 23 total duration, 3 pulse, 32 T-out, 10 Pulse counters, 1 INTAB Interface-Teknik AB...
- Page 45 transducer connections, 5 transmitter, 18 transmitters, 15 trickle charged, 6 trig output, 25 Trig Window, 23 TTL-compatible inputs, 36 Tx, 9 Uncertainty, 28 window, 23 Volt/Current, 10 Voltage signals, 16 V-out, 13 V-Out, 10 wrap around, 22...
- Page 46 INTAB Interface-Teknik AB...
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