Barnstead International RD-1101 User manual

0115-0093 • 3/04/02

RD-1101 Chart Recorder

OPERATION MANUAL

AND PARTS LIST

Model 1101

Serial Number:

Table of Contents

Safety Information .............................................................................................................................................. 3

Alert Boxes ..................................................................................................................................................... 3

Safety Information........................................................................................................................................... 3

Introduction ........................................................................................................................................................ 4

Specifications ..................................................................................................................................................... 5

General ........................................................................................................................................................... 5

Servo System ................................................................................................................................................. 5

Chart Drive System......................................................................................................................................... 6

Set-Up Procedures............................................................................................................................................. 7

Power Requirements ................................................................................................................................... 7

Chart Paper Installation ............................................................................................................................... 7

Pen Installation ............................................................................................................................................ 7

Grounding.................................................................................................................................................... 8

Input Signal Connections............................................................................................................................. 8

Recording Procedure................................................................................................................................... 9

Manual Paper Advance/Rewind ................................................................................................................ 10

General Theory ................................................................................................................................................ 14

Pen Drive System...................................................................................................................................... 14

Chart Drive System ................................................................................................................................... 14

DC Power Supply ...................................................................................................................................... 14

Calibration Procedure ...................................................................................................................................... 16

Power Supply ............................................................................................................................................ 16

Chart Drive System ................................................................................................................................... 16

Pen Drive System...................................................................................................................................... 16

1. Preliminary Set-Up

2. Warm Up Procedure

3. Gain

4. Offset

5. Span (Range)

Special Features .............................................................................................................................................. 19

Remote Chart On/Off.................................................................................................................................... 19

Override Event Marker.................................................................................................................................. 19

Remote Chart Programming/TTL ................................................................................................................. 19

Operational Tips and Maintenance .................................................................................................................. 22

Troubleshooting ............................................................................................................................................... 23

Analog Section.............................................................................................................................................. 23

Chart Drive Section....................................................................................................................................... 24

Accessories...................................................................................................................................................... 25

Replacement Parts........................................................................................................................................... 26

Warranty........................................................................................................................................................... 28

Safety Information

This manual contains important operating and safety

information. You should carefully read and understand the

contents of this manual prior to the use of this equipment.

Safety Information

Your RD-1101 Chart 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 boxes throughout

the manual.

Important information

This manual contains important operating and safety

information. You must carefully read and understand the

contents of this manual prior to using this equipment.

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 prior to

maintenance and 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.

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.

Alert Signals

Introduction

The Model 1101 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 and a variety of other

variables is made possible with the use of this recorder.

Specifications

General

Number of Channels: One

Chart Width: 100mm Writing Width

Writing Method: Disposable fiber tipped pens with self contained ink

supply

Accuracy: Deadband: less than ±0.1%

Linearity: less than ±0.5%

Repeatability: less than ±0.1%

Zero Adjust: Continuous +100% to -100%.

Power Requirements: 120 VAC ±10%, 50/60 Hz, Single Phase

240 VAC ±10%, 50/60 Hz, Single Phase

Wattage: 17.5 watts max

Fuse: 120 VAC - 3AG Slo-Blo 0.3a (2)

240 VAC - 3AG Slo-Blo 0.15a (2)

Weight: 6.8 lbs. (2.95 Kg)

Dimensions: 8.5"W (21.6 cm) x 4.5"H (11.4 cm) x 10.5"D (26.7 cm)

Accessories Furnished: Pen(s); One Roll Chart Paper; Operators Manual;

Paper Feed Spool

Servo System

Pen Drive: Patented (U.S. Patent No. 4,146,828) Pulse Modulated

System

Input Type: Single Ended, Floating

Input Impedance: 2.5 megohms, fixed

Input Filtering: Filters noise above 3 Hz

Full Scale Response: Less than 0.25 seconds

Full Scale Spans: 12 switch selectable:

(Ranges) 1mV, 10mV, 100mV, 1V

2mV, 20mV, 200mV, 2V

5mV, 50mV, 500mV, 5V

Overshoot: None. System critically damped

Zero Shift Tempco: less than 0.1% per degree C

Calibration: Front panel all ranges (with external reference)

Overrange Protection: Approximately 6 seconds after + or - overrange

Override Event Marker: Standard - Approximately ±4% spike

Pen Lift: Manual external lever

Chart Drive System

Chart Drive: Four Phase Stepper Motor

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.

Chart Speed Accuracy: Greater than 99.97%.

Chart Programming: Contact closure of TTL/CMOS

Paper Reverse: Manual external knob

SPECIFICATIONS

Power Requirements

Recorders are shipped ready to operate on a nominal AC

voltage of 120 VAC, 60 Hz or 240 VAC, 60 Hz as per country

specifications. Conversion can be made to an alternate

voltage moving a slide switch (inside the instrument) to the

proper position and installing the correct fuses (0.15a). See

Figures 2 and 3 for access.

Chart Paper Installation (See Figures 1

and 2)

1. Remove masking tape from the roll of chart paper and

make an 8 inch long "V" in the beginning of the paper.

2. Load the chart paper into the rear of the recorder after

installing the Paper Feed Spool. (Taped in place for

shipping on the rear of the recorder.)

3. Feed the "V" through the space between the paper

holddown and the chassis using the manual paper

advance/rewind knob to assist loading.

4. 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 forward and

backward with the manual advance/rewind knob.

Pen Installation

With the pen holder in the LOAD or UP position, remove the

cap from the pen and slide the pen into the holder as far as

possible.

Set-Up Procedures

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

interrnal wiring and electronic

components.

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

ground (chassis) and to the ground pin of the AC power

connector, 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

not grounded, connect a wire between the recorder ground

terminal and the chassis of the signal source.

In case of large common-mode signals, particularly 120 Hz,

connect the recorder ground terminal to the source of the

common-mode signal, or to the negative (-) recorder input

terminal.

Input Signal Connections (See Figure 2)

This instrument requires a DC voltage input. Signal sources

with current outputs will require a shunt resistor across the +

and – input terminals. Ohms law may be used to compute the

proper value for a given input range. The formula is:

Where: E is the recorder span (range) selected in Volts

I is the maximum current signal to be recorded in

Amps

R is the resistance of the shunt resistor in Ohms.

1. Electrical connections are made as follows:

Signal source positive to recorder (+) terminal.

Signal source negative to recorder (–) terminal.

2. Right hand chart zero is standard on the recorder.

However, either right or left hand zero may be used.

A. Positive going input signals:

1. For RIGHT hand zero, adjust pen to the right side

of the chart with the zero control. The pen will

now drive to the left.

Caution

DO NOT connect the POWER

GROUND (PWR GND) terminal to

either the SIGNAL GROUND (SIG

GND) (-) or the CHASSIS

GROUND terminal as damage to

the recorder may occur.

R = E

SET-UPPROCEDURES

2. For LEFT hand zero, adjust pen to the left side of

the chart with the zero control. Reverse the input

signal connection on the rear of the recorder

(POSITIVE input to (–) terminal and NEGATIVE

input to (+) terminal). The pen will now drive to

the right.

B. Negative going input signals:

1. For RIGHT hand zero, adjust pen to the right side

of the chart with the zero control. Reverse the

input signal connections on the rear of the

recorder (POSITIVE input to (–) terminal and

NEGATIVE input to (+) terminal). The pen will

now drive to the left.

2. For LEFT hand zero, adjust pen to the left side of

the chart with the zero control. Connect the signal

input with the POSITIVE to (+) and the

NEGATIVE (–) terminal. The pen will now drive to

the right.

Recording Procedure

(See Figures 1 and 3)

With chart paper and pen installed and recorder plugged into

proper AC source (corresponding to the voltage conversion

slide switch on the inside of the recorder), perform the

following steps for routine recording.

1. Check that the REC/STBY switch is in the STBY position

and the power is ON.

2. Set the INPUT RANGE and mV/V switch to the desired

input range (span).

3. Set the CHART SPEED and CM/MIN-OFF-CM/HR

switch to the desired chart speed.

4. Adjust pen to the proper zero position using the ZERO

control.

5. Set the REC/STBY switch to REC and proceed with your

recording.

Note:

When switching from one input

range (span) to another, the pen

zero should be checked and

adjusted if necessary.

Note:

"OSC OUT" and "CHART PROG"

terminals of Terminal Board TB1

(on bottom of recorder) must be

jumpered together, unless remote

chart control is used, or the chart

drive WILL NOT function.

SET-UPPROCEDURES

Manual Paper Advance/Rewind

The paper may be manually positioned as desired at any

time using the advance/rewind knob on the right side of the

recorder.

SET-UPPROCEDURES

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