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Cole-Parmer
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1202
Operating Instructions
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Cole-Parmer 1202, 1201 Operating Instructions

Linear Recorders
Model 1201/Model 1202
Operating Instructions
0115-0094 • 2/15/96
1
Table of Contents
Safety Information .............................................................................................................................................. 3
Warnings.........................................................................................................................................................3
Warranty Card................................................................................................................................................. 4
Initial Inspection .............................................................................................................................................. 4
Return Requests/Inquiries .............................................................................................................................. 4
Description...................................................................................................................................................... 5
General ........................................................................................................................................................... 6
Servo System ................................................................................................................................................. 6
Chart Drive System......................................................................................................................................... 7
Options............................................................................................................................................................ 7
Setup Procedure ................................................................................................................................................ 8
Power Requirements ...................................................................................................................................... 8
Chart Paper Installation .................................................................................................................................. 8
Pen Installation ............................................................................................................................................. 10
Grounding ..................................................................................................................................................... 10
Input Signal Connections.............................................................................................................................. 11
Recording Procedure ....................................................................................................................................... 13
Manual Paper Advance/Rewind ................................................................................................................... 14
Special Features .............................................................................................................................................. 15
Separate Pen Event Marker - Standard........................................................................................................ 15
Remote Chart On/Off - Standard .................................................................................................................. 15
Electric Pen Lift - Standard ........................................................................................................................... 15
Override Event Marker - Standard................................................................................................................ 15
Remote Chart Programming/TTL - Standard................................................................................................ 16
Pulse Train Specifications: ........................................................................................................................ 16
Paper Tear Off Bar - Standard...................................................................................................................... 17
Forward/Reverse Chart Drive - Standard ..................................................................................................... 17
General Theory ................................................................................................................................................ 18
Pen Drive System ......................................................................................................................................... 18
Chart Drive System....................................................................................................................................... 18
Dc Power Supply .......................................................................................................................................... 19
Calibration ........................................................................................................................................................ 20
Power Supply................................................................................................................................................ 20
Chart Drive System....................................................................................................................................... 20
Pen Drive System ......................................................................................................................................... 20
Operational Tips And Maintenance.................................................................................................................. 26
Troubleshooting ............................................................................................................................................... 27
Chart Drive Section....................................................................................................................................... 27
Analog Section.............................................................................................................................................. 28
Accessories................................................................................................................................................... 29
Replacement Parts ....................................................................................................................................... 29
Parts and Accessories ..................................................................................................................................... 29
Ordering Procedures........................................................................................................................................ 30
Wiring Diagram ................................................................................................................................................ 31
One Year Limited Warranty.............................................................................................................................. 32
2
Safety Information
Alert Signals
Warning
Warnings alert you to a possibility of personal injury .
Caution
Cautions alert you to a possibility of damage to the equipment.
Note
Notes alert you to pertinent facts and conditions.
Your Linear Recorder has been designed with function, reliability and safety in mind. It is your responsibility to install it in conformance with local electrical codes. For safe operation, please pay attention to the alert signals throughout the manual.
Warnings
To avoid electrical shock, always:
1. Use a properly grounded electrical outlet of correct voltage and current handling capacity.
2. Disconnect from the power supply before servicing.
To avoid personal injury:
1. Do not use in the presence of flammable or combustible materials; fire or explosion may result. This device contains components which may ignite such materials.
2. Refer servicing to qualified personnel.
3
Introduction
Warranty Card
Please fill in and return the Warranty Registration card so we may validate the beginning date of the warranty period.
Initial Inspection
The recorder should be inspected for shipping damage immediately after unpacking. If any damage is found, please notify the carrier and the Barnstead|Thermolyne Customer Service Department.
If the recorder fails to operate properly, check all connections and switch settings and insure that the plug-in connector is firmly seated in place. Also check the setup Procedure contained in the manual before calling the Barnstead|Thermolyne Customer Service Department.
Do not return recorder for warranty service without specific authorization from the Barnstead|Thermolyne Customer Service Department.
Return Requests/Inquiries
Return requests, service or other inquiries should be made directly to the Barnstead|Thermolyne Customer Service Department.
To avoid lengthy delays in processing orders or correspondence regarding your recorder, please include the Model Number, Serial Number, Options and Place of Purchase.
4
INTRODUCTION
Description
The Model 1200 Recorder is a multi-range potentiometric, null balance servo recorder which will provide an accurate, permanent, graphic record of the input signal.
This graphic recorder may be used in many different applications in the medical, teaching and industrial fields where a precision instrument is of utmost importance.
Measurement of DC voltage, current, temperature and a variety of other variables is made possible with the use of this recorder.
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Specifications
General
1. Number of Channels: ....... Model 1201 - One; Model 1202 - Two.
2. Chart Width: ..................... 200mm Writing Width
3. Writing Method: ................ Disposable fiber tipped pen with self contained ink supply
4. Accuracy:.......................... Deadband: less than ± 0.1%.
Linearity: less than ± 0.5%. Repeatability: less than ± 0.1%.
5. Zero Adjust: ...................... Continuous + 100% to - 100%
6. Power Requirements:....... 115/230 VAC ± 10%, 50/60 Hz, Single Phase
7. Wattage: ........................... Model 1201 - 17.5 watts max
Model 1202 - 22.5 watts max
8. Fuse: ................................ 115 VAC - 3AG Slo-Blo 0.3a (2)
230 VAC - 3AG Slo-Blo 0.15a (2)
9. Line Filter:......................... Grounded electrostatically shielded power transformer
10. Weight: ............................. Model 1201 - 9 lbs (4.1 Kg)
Model 1202 - 11 lbs (5 Kg)
11. Dimensions:...................... 15" (38.1cm) W (incl. knob) x 4.38" (11.13cm) H x 10.5"
(26.7cm) D
12. Accessories Furnished: .... Pen(s); One roll chart paper; Operators Manual; Paper
Feed Spool; Two 0.15a Fuses (230 VAC operation)
Servo System
1. Pen Drive:......................... Patented (U.S. Patent No. 4,146,828) Pulse Modulated
System
2. Input Type: ....................... Single Ended, Floating
3. Input Impedance:.............. 2.5 megohms, fixed
4. Input Filtering:................... Filters noise above 3 Hz
5. Full Scale Response: ....... Less than 0.25 seconds
6. Full Scale Spans: ............. 12, switch selectable:
Ranges ............................. 1mV, 10mV, 100mV, 1V
2mV, 20mV, 200mV, 2V 5mV, 50mV, 500mV, 5V
7. Overshoot:........................ None. System critically damped
8. Zero Shift Tempco:........... Less than 0.1% per degree C
9. Calibration: ....................... Front panel all ranges (with external reference)
10. Overrange Protection: ...... Shutdown approximately 6 seconds after + or - overrange
6
SPECIFICATIONS
11. Event Marker: ................... Electronic override - Approximately ± 4% spike and
separate pen, electric solenoid actuated
12. Pen Lift: ............................ Manual external lever and electric solenoid actuated
Chart Drive System
1. Chart Drive: ...................... Four phase stepper motor.
2. Chart Speeds: .................. 16 switch selectable metric:
1, 2, 3, 6, 10, 15, 20 and 30 cm/min and cm/hr.
NOTE: Chart speeds are whole number reciprocals to facilitate use in sec/cm and min/cm
ranges.
3. Chart Speed Accuracy: .... Less than ±0.03% error.
4. Chart Programming: ......... Contact closure or TTL/CMOS.
5. Paper Reverse: ................ External knob and electrical
Options
See “Special Features”, Page 15.
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Setup Procedure
Warning
Use a properly grounded electrical outlet of correct voltage and current handling capacity.
Disconnect from the power supply before servicing.
Note
The recorder must be disconnected from the AC power source and caution must be used in removing and replacing the bottom cover to prevent damage to internal wiring and electronic components.
Power Requirements
Recorders are shipped ready to operate on a nominal AC voltage of 115VAC. Conversion can be made to 230VAC by moving a slide switch (inside the instrument) to the proper position and installing the correct fuses (0.15a). See Figure 4 for access.
Chart Paper Installation
See Figures 1, 2 and 3
1. Place the REC/STBY switch(es) in the STBY position.
2. Place the Cm/Min-OFF-Cm/Hr switch in the OFF position.
3. Turn the power ON and place the pen(s) in the LOAD position using the ZERO control (fully clockwise) and lift the pen(s) with the pen lift lever.
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SETUP PROCEDURE
4. Remove the masking tape from a new roll of paper and make an 8 inch long “V” in the beginning of the paper.
5. Load the chart paper into the rear of the recorder after installing the Paper Feed Spool. (Taped in place on the rear of the recorder).
6. Feed the “V” through the space between the paper hold down and the chassis, and under the Tear-Off bar, using the paper advance/rewind knob to assist loading.
7. Check for proper hole and slot engagement with the sprockets to insure that the paper is not cocked. The chart grids should be parallel with the paper Tear-Off bar and the paper should move smoothly and freely.
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SETUP PROCEDURE
Pen Installation
1. With the pen holder(s) in the LOAD or UP position, remove the cap from the short nib pen and slide the pen into the holder as far as possible.
2. On two pen models, insert the long nib pen into the upper pen holder in the same manner. There should be no interference between the pens.
Caution
Do not connect the Power Ground (PWR GND) terminal (1TB1 or 2TB1) to either the Signal Ground (SIG GND) (-) or the Chassis Ground terminal as damage to the recorder may occur.
Grounding
For best performance, the green (or green and yellow) ground wire in the power cord for the recorder and the signal source should share a common “water pipe” ground. The green (green and yellow) wire in the power cord is connected to the recorder ground (chassis), but not to the signal input. If the signal input does not have a third wire in its power cord, or if the instrument is
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