Pce instruments Pce-msr 350 User manual

Magnetic Stirrer PCE-MSR 350

User Manual

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Last change: 9 January 2020

v1.0

English

 
 © PCE Instruments 
 
 
Contents 
1Safety notes........................................................................................... 1 
2Introduction ........................................................................................... 3 
3Intended use.......................................................................................... 3 
4Technical specifications ...................................................................... 3 
5Features ................................................................................................. 3 
6Delivery contents ..................................................................................4 
7Device description ................................................................................4 
8Installation ............................................................................................. 5 
8.1 Location and mounting..................................................................................................... 5 
8.2 Assembling support rod stand.......................................................................................... 5 
8.3Connecting power cord .................................................................................................... 6 
9User interface and display ...................................................................6 
10 Operation ............................................................................................... 7 
10.1 Switching on the device.................................................................................................... 7 
10.2 Setting the safe temperature............................................................................................ 7 
10.3 Setting time...................................................................................................................... 8 
10.4 Setting speed................................................................................................................... 8 
10.5 Setting temperature.......................................................................................................... 8 
10.6 Working with External Temperature Sensor ..................................................................... 8 
11 Troubleshooting....................................................................................9 
12 Maintenance and cleaning ...................................................................9 
13 Warranty...............................................................................................10 
14 Disposal ...............................................................................................10 
 

1 Safety notes

Please read this manual carefully and completely before you usethe device for the first time. The

device may only be used by qualified personnel and repaired by PCE Instruments personnel.

Damage or injuries caused by non-observance of the manual are excluded from our liability and

not covered by our warranty.

•The device must only be used as described inthis instruction manual. If used otherwise,

this can cause dangerous situations for the user and damage to the meter.

•The instrument may only be used if the environmental conditions (temperature, relative

humidity, …) are within the ranges stated in the technical specifications. Do not expose

the device to extreme temperatures, direct sunlight, extreme humidity or moisture.

•Do not expose the device to shocks or strong vibrations.

•The case should only be opened by qualified PCE Instruments personnel.

•Never use the instrument when your hands are wet.

•You must not make any technical changes to the device.

•The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,

no abrasives or solvents.

•The device must only be used with accessories from PCE Instruments or equivalent.

•Before each use, inspect the case for visible damage. If any damage is visible, do not

use the device.

•Do not use the instrument in explosive atmospheres.

•The measurement range as stated in the specifications must not be exceeded under

any circumstances.

•Place the device on a flat, stable, clean, non‐slippery and fire‐proof surface.

•Ensure that only trained staff uses the device. Keep the instructions manual in a place

where it can be accessed easily.

•Beware of the possible effects of magnetic field on pacemakers, data media, etc.

•Do not touch the hotplatesurface when temperature of hotplate is over 50 °C, this could

result in serious burns or injury. Pay attention to the residual heat after switching off.

•Properly lift the device with both hands while moving or installing. Also, the device

should only be moved from its position once it attains the room temperature.

•Make sure that power supply cord or temperature sensor cable must not come in

contact with the heated mounting plate.

•Do not place any steel or magnetic material on the top surface except the

recommended magnetic stirring bar with beaker or flask in WARNING between.

Doing this can affect the magnetism of device.

•Wear your personal protective equipment in accordance with the hazardous category

of the media to be processed. Otherwise, there is a risk from:

Splashing and evaporation of liquids.

Ejection of parts

The release of toxic or combustible gases.

•The top surface must be clean and kept intact. Wear protective gloves while cleaning

the device. Use a soft mild cloth to clean.

•Do not use damaged beaker, flask, stirring bar or any other component for operation.

It may affect the efficiency of the device.

•Reduce the speed if:

If the medium splashes out of the vessel due to high speed.

If the appliance is not running smoothly.

If the container moves on the base plate.

•Do not move the device when it’s connected to power supply or during its operation.

•Ensure that the product is used only for specified operation. It should not be used for

shaking hazardous or reactive solutions.

•Give specific attention to the risks associated with:

Flammable materials

Flammable media with low steam pressure

Overfilling of medium

Incorrect vessel size

Unstable vessel

Glass breakage

•Note that, there is a possibility of contamination or unwanted chemical reaction.

•The RTD (PT 1000) sensor must always be immersed in the medium by at least 20

mm.

•The rating of power supply must match with the specified rating.

•The top surface will be hot after any heating operation. Do not touch the top surface till

the hot LED indication glows.

•Process pathogenic materials only in a closed vessel under a suitable extractor hood.

Do not operate the appliance in explosive atmospheres, with the hazardous substance

or under water.

•Only that liquid should be used for mixing which does not react dangerously to the extra

energy produced through processing. This also applies to any extra energy produced

in other ways. For example: Through light irradiation, through surrounding temperature

etc.

•Abrasion of the dispersion equipment or the rotating accessories can get into the

medium you are working on.

•The chemical reaction of PTFE can occur when in contact with molten or dissolved

alkaline earth metals, as well as with fine partied powders of metals of the 2 and 3

group of the periodical system at temperatures above 300‐400 °C. Only elementary

fluorine, chlorine trifluoride and alkaline metals do attack PTFE, halogen hydrocarbons

have a reversible swelling effect. Only glass‐coated magnetic rods should be used in

combination with solute alkali metals or alkaline earth metals or at the temperature

above 250°C.

•To protect do not cover the device, even partially, with elements such as metallic plates

or sheets otherwise it may overheat. Ensure that mounting plate remains clean.

•The socket must be earthed (protective ground contact)

•Do not use the device if the ceramic set‐up surface is damaged, e. g. scratches,

splinters or corrosion. A damaged set‐up surface could break if used.

•Non-observance of the safety notes can cause damage to the device and injuries to

the user.

We do not assume liability for printing errors or any other mistakes in this manual.

We expressly point to our general guarantee terms which can be found in our general terms of

business.

If you have any questions please contact PCE Instruments. The contact details can be found at

the end of this manual.

2 Introduction

This manual provides important safety information for this Hot Plate Magnetic Stirrer. It should be

kept near the equipment for quick & easy reference. This stirrer is specially designed for precise

control of stirring speed and temperature which allows gentle to vigorous mixing with speed

ranging from 200 to 2200 RPM with a maximum capacity of 10 l. The multipurpose digital display

assists users by displaying various parameters like actual & set temperature, speed, mode of

operation, etc.

3 Intended use

The hotplate stirrer is suitable to use for mixing and/or heating the liquids with the maximum

capacity of 10 l. It is designed for use in general laboratories, pharmacies, schools and

universities.

Note: Before using the instrument, please read this user manual carefully. This user manual is

intended to assist with the operation and care of the unit only and not its repair. For repair please

contact the supplier.

4 Technical specifications

Motor

Number of stirring position

Max Stirring Quantity on Equip(H2O)

10 l

Speed range

200 …2200 RPM

Speed control

10 RPM / Step

Temp. range

Room Temp. …320 °C

Safe Temp

345

Temperature control

1°C / Step

Time range

1 …999 minutes & Infinite

Temp Accuracy [+/‐K]

Recommended Stirring bar length

25 mm

Set‐up plate dimensions

140 mm

Dimensions (L x W x H)

156 x 248 x 104 mm

Heat output

600 W

Protection class according to DIN EN

IP 21

Permissible ambient temp.

5 … 40 °C

Permissible relative humidity

80 %

Weight

2.2 kg

Input Voltage

110 V / 2.65 A, 220 V / 2.65 A

Motor rating input & Output

5 … 7 W

Total Power Consumption

610 W

5 Features

•Powerful motor delivers constant speed under varying load conditions.

•A same instrument with 3 different setup plates. SS top with chrome plating, SS top

with ceramic coating and aluminium top

•Temperature setting from ambient to 320°C

•Variable speed setting from 200 to 2200 RPM in steps of 10 RPM & long timer range

from 1‐999 mins & infinite mode

•Microprocessor controlled with last run memory feature

•Large & clear display shows critical parameters for easy reading

•Comes with PT‐1000 temperature probe to accurately measure temperature of medium

•Small footprint saving valuable bench space

6 Delivery contents

1 x magnetic stirrer PCE-MSR 350

1 x PT 1000 Temperature probe and Probe Attachment Stand

1 x Magnetic Stirring Bar

1 x Power Cord

1 x User Manual

7 Device description

Front side

1 Ceramic hotplate 3 Start / Stop button

2 Digital display 4 On / off button

Rear side

1 Power port and fuse 2 Port for external temperature sensor PT1000

8 Installation

The hot plate stirrer is provided in a box. Open the box, then remove the packaging and gently

place the device on the firm and levelled surface. Take care while unpacking & removing all

accessories. The user manual should be kept with the device for easy access. Please keep all

packaging in safe storage for at least two years for warranty purpose.

8.1 Location and mounting

Place the stirrer on a flat and levelled surface & ensure that all the four legs of this stirrer stands

on the surface firmly. Avoid installing on a slippery surface or surface prone to vibration.

1. Ideal ambient temperature is 25°C ± 1°C; avoid placing the unit in direct sunlight.

2. Keep clearance of at least 20 cm from all side to increase the cooling efficiency.

3. Keep the unit away from heated solution to avoid sample temperature issues.

4. Do not place the equipment at a place where it becomes difficult to operate it.

8.2 Assembling support rod stand

1. Screw in the support rod manually until it cannot be tightened any further.

2. Assemble the accessories mentioned in Section 6 using a clamp.

8.3 Connecting power cord

1. Connect one end of the power cord to the rear side of the stirrer and another end to the

power supply as shown in the figure below.

2. Push the power cord firmly for proper connection and turn ON the main switch.

3. Make sure that input power source is according to stirrer requirement.

9 User interface and display

Display

Display shows

current speed and

time values

LEDs indicates in

which unit

temperature is

displayed

Display shows Set and

Actual Temperature

value

LEDs indicates

temp. displayed is of

PROBE

Item

Name

Function

Temp

Press “Temp” to select Temperature value. Then press “+/‐”to set

Temp value in °C

Speed

Press “Speed” to select Speed value. Then press “+/‐”

to set Speed value in RPM

Time

Press “Time” to select time value. Then press “+/‐”to set Time value

in minutes

Temp.

Selection

Press “°C/°F” to change the unit in which Temp. is displayed

Increment

Press “+” to increase values

Decrement

Press “‐”to decrease values

Probe

To display Temperature of probe at Actual Temp Display

Start/Stop

Press “Start/Stop” to Start or Stop any operation

HOT LED

Glows when top plate of the stirrer is HOT equal or above 50°C

10 Operation

10.1 Switching on the device

Plug the power cord into its socket on the rear panel, now connect the power cord to AC power

output. Now switch ON the mains and switch ON the stirrer from the front side, as shown in the

figure. The power LED on its front panel will glow.

Important note: Values of any parameter will get set saved only after the respective display

blinks for multiple times.

10.2 Setting the safe temperature

This is a safety feature which makes operation (heating and stirring) stop if the temperature of the

heater exceeds the value saved in safe mode.

The safe temperature limit must always be set to at least 25 °C lower than the fire point of the

medium stirred.

lmmediately after Switching ON the unit, Safe Temperature Setting mode will be initialized. The

"ACTUAL" display of device will display "safe" and "SPEED/TIMER" display will show the

respective value of safe temperature to be set.

By pressing +/- buttons, you can set the value of safe temperature. The maximum value of safe

temperature can beset up to 345 °C. After selecting the desired safe temperature value, the value

is saved automatically after blinking 5 times in the display panel.

IMPORTANT NOTE: The safe temperature must not be less than 25 °C from ambient and it

should be more than 25 °C from operational temperature for optimum performance.

10.3 Setting time

The time in the display will show in minutes. The stirrer timer set for operation is in between 1min

to 999 mins and infinite. Infinite time is seen as “)(”. To set time, press “TIME” button and then set

the value by pressing “+/‐”button. When time button is pressed, the “Mins”display will blink

indicating the time value is selected. Once time value is selected, single press “+/‐”will increase

or decrease time value by 1min.

Long press increment or decrement button to quickly increase or decrease time value. Time value

gets saved after multiple blinks. The timer is a countdown timer showing remaining time left. Once

time is over, the stirrer stops.

10.4 Setting speed

Speed is displayed as RPM. The minimum and maximum speed of stirrer is 200 RPM and 2200

RPM respectively. When the equipment is used for the 1st time, the speed will be set to zero and

shown as “0”. Once speed value is selected, single press “+/‐”will increase or decrease speed

value by 10 RPM. Long press “+/‐”to quickly increase or decrease speed value. Speed value get

saved after 5 blinks.

To operate the device as a heater set the time and temperature as informed in the previous

section and set the speed of the stirrer to zero by pressing “+/‐”.

10.5 Setting temperature

Initially, on every startup, the temperature function will be in OFF state. To set Temperature,

Single press “Temp” button to select Temperature value and then press “+/‐”to set temperature

value. SET temperature gets saved after display blinks for multiple times.

Temperature value can be set from Ambient temperature to 320°C. Once Temperature value is

selected, pressing “+/‐”to will increase or decrease temperature value by 1°C. Long press “+/‐”

to quickly increase or decrease of the temperature value. Temperature value gets saved after

multiple blinks.

One can select units of temperature (°C) OR (°F) by pressing the “°C/°F”, whichever temperature

is selected its respective LED will glow. As per the selected unit, the Actual Value and Set value

of temperature will change accordingly.

To operate the device only in stirring mode select the speed and time as mentioned in previous

sections, for temperature single press the temperature button to select temperature then press

“+/‐”until the SET temp display show “ABT“(Ambient Temperature) then press the start button to

start the stirrer.

10.6 Working with External Temperature Sensor

Plug the connector of the temperature sensor to the temperature sensor socket on the rear side

of the instrument. The PROBE LED will glow indicating that probe is selected and an ACTUAL

display will automatically show the temperature of probe.

Never remove or insert PT 1000 probe when the equipment is in running mode.

To insert or remove PT 1000 probe, first stop the operation, switch off the equipment, insert or

remove PT 1000 probe and then switch on the equipment to carry out the operation. If this is not

done, equipment will display ERROR 55 ( see troubleshooting for all the errors)

11 Troubleshooting

Any type of malfunction during operation can be identified by error a message on display.

Proceed as follows in such cases.

1. Problem : No Display

Root Cause : No main power connection

Solution : 1. Check main power is available.

2. Check that power adaptor is working properly and it is properly connected at both

ends.

3. If the problem still persists then contact PCE Instruments.

2. Problem : Err 2

Root Cause : Motor blockage/over load/fail, Encoder sensor fail

Solution : 1. First switch off the equipment, plug it out and Plug it in again.