Cole-Parmer 1202, 1201 Operating Instructions
Linear Recorders
Model 1201/Model 1202
Operating Instructions
0115-0094 • 2/15/96
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Table of Contents
Safety Information .............................................................................................................................................. 3
Warnings.........................................................................................................................................................3
Introduction ........................................................................................................................................................ 4
Warranty Card................................................................................................................................................. 4
Initial Inspection .............................................................................................................................................. 4
Return Requests/Inquiries .............................................................................................................................. 4
Description...................................................................................................................................................... 5
General ........................................................................................................................................................... 6
Servo System ................................................................................................................................................. 6
Specifications ..................................................................................................................................................... 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
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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.
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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.
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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
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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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