Ohaus MB35 User Manual [en, es, fr]

Instruction Manual

MB35 Moisture Analyzer

Manual de instrucciones Analizador de humedad MB35

Guide d’utilisateur Analyseur d’humidité MB35

MB35 EN-1

Contents

1.	INTRODUCTION .....................................................................................................	EN-2
1.1	Safety Precautions ......................................................................................................	EN-2
2.	INSTALLATION ..........................................................................................................	EN-4
2.1	Unpacking and Checking Equipment..............................................................................	EN-4
2.2	Selecting the Location ..................................................................................................	EN-4
2.3	Installing the Heat Shield, Draft Shield and Pan Support ...................................................	EN-4
2.4	Connecting to a Power Supply ......................................................................................	EN-5
2.5	Operating Controls ......................................................................................................	EN-6
3.	MOISTURE ANALYZER SETUP .....................................................................................	EN-7
3.1	Language Settings ......................................................................................................	EN-7
3.2	Weight Calibration ......................................................................................................	EN-8
3.3	Temperature Calibration ...............................................................................................	EN-9
3.4	Time and Date Setting................................................................................................	EN-10
3.5	RS232 Settings.........................................................................................................	EN-11
3.6	Setting Print and GLP Printing On or Off........................................................................	EN-12
3.7	Adjusting Display Contrast and Brightness ....................................................................	EN-13
4.	OPERATING YOUR MOISTURE ANALYZER ...................................................................	EN-14
4.1	Setting the Drying Temperature....................................................................................	EN-14
4.2	Setting the Drying Time ..............................................................................................	EN-14
4.3	Sample Preparation...................................................................................................	EN-14
4.4	Running the Test .......................................................................................................	EN-15
4.5	RS232 Command Table ............................................................................................	EN-16
5.	CARE AND MAINTENANCE ........................................................................................	EN-17
5.1	Cleaning Interior/Exterior Components ..........................................................................	EN-17
5.2	Replacing Power Line Fuse ........................................................................................	EN-18
5.3	Resetting the Dryer Thermal Overload Device ................................................................	EN-18
5.4	Accessories..............................................................................................................	EN-19
5.5	Specifications ...........................................................................................................	EN-19
6.	COMPLIANCE ..........................................................................................................	EN-20

EN-2	MB35

1. Introduction

Thank you for deciding to purchase a MB35 Halogen Moisture Analyzer from Ohaus. Behind your instrument stands OHAUS, a leading manufacturer of precision Moisture Analyzers, Balances, Scales and Indicators. An Aftermarket Department with trained instrument technicians is dedicated to provide you with the fastest service possible in the event your instrument requires servicing.

1.1 Safety Precautions

Your Moisture Analyzer employs state of the art technology and meets the latest demands regarding instrument safety. Improper operation can endanger personnel and can cause property damage. For safe and dependable operation, please comply with the following instructions:

—The Moisture Analyzer is used for determination of the moisture in samples. Please use the instrument exclusively for this purpose. Any other type of use can endanger personnel and damage the instrument or other property.

—The Moisture Analyzer must not be operated in a hazardous environment and only under ambient conditions specified in these instructions.

—The Moisture Analyzer may be operated only by trained personnel who are familiar with the properties of the samples used and with the handling of the instrument.

—Your Moisture Analyzer is supplied with a 3-pin power cable with an equipment grounding conductor is prohibited.

The Halogen Moisture Analyzer works with heat!

—Ensure sufficient free space around the instrument to avoid heat accumulation and overheating (approximately 1 m free space above the instrument).

—Never place flammable materials on, below or next to the instrument as the area around the dryer unit warms up.

—Exercise caution when removing the sample. The sample itself, the sample chamber and any sample containers may still be very hot.

—During operation, you should never open the dryer unit as the ring-shaped heating element or completely.

MB35	EN-3

1.1 Safety Precautions (Cont.)

Certain samples require special care!

With certain types of samples, there is a possibility of danger to personnel or damage to property through:

Fire or explosion:

— Flammable or explosive substances;

—Substances containing solvents;

—Substances which release flammable or explosive vapors when heated. With such samples, work at a drying temperature that is low enough to prevent the formation of flames or an explosion and wear protective goggles. Should there be any uncertainty regarding the flammability of a sample, always work with a small sample (maximum. 1 gram). In such cases, never leave the instrument unattended! In cases of doubt, perform a careful risk analysis.

Poisoning, burning:

—Substances which contain toxic or caustic components. Such substances may be dried only in a fume hood.

Corrosion:

—Substances which release corrosive vapors when heated (e.g. acids). In the case of such substances, we advise you to work with small amounts of samples as the vapor can condense on cooler housing parts and cause corrosion. Please note that the user always takes responsibility and assumes liability for damage caused by use of the types of samples mentioned above!

—Never make any modifications or constructional alterations to the instrument and use only original spare parts and optional equipment from Ohaus Corporation.

—Your Moisture Analyzer is a rugged, precision instrument – but you should still treat it carefully; it will then provide you with many years of trouble-free operation.

—Please comply with all notes and instructions in these operating instructions. Keep the instructions in a safe place where they are immediately at hand if any points are unclear.

APPLICATION DISCLAIMER:

—Moisture determination applications must be optimized and validated by the user according to local regulations. Application specific data provided by Ohaus is provided for reference purposes only. Ohaus waives all liability for applications based on this data.

EN-4	MB35

2. Installation

This section contains unpacking and installation instructions for your new Moisture Analyzer .

2.1 Unpacking and Checking Equipment

Open the package and remove the instrument and the accessories. Check the completeness of the delivery.

The following accessories are part of the standard equipment of your new Moisture Analyzer.

—1 Box, Aluminum sample pans

—1 Pan support

—1 Specimen sample (circular, absorbent cellulose disk)

—1 Draft shield element

—1 Heat shield

—1 Power cable

—1 Set of operating instructions

—1 Warranty card

Remove packing material from the instrument. Check the instrument for transport damage. Immediately inform your Ohaus dealer if you have complaints or parts are missing. Store all parts of the packaging. This packaging guarantees the best possible protection for the transport of your instrument.

2.2 Selecting the Location

The Moisture Analyzer should always be used in an environment which is free from excessive air currents, corrosives, vibration, and temperature or humidity extremes. These factors will affect displayed weight readings.

DO NOT install the Moisture Analyzer next to:

• Open windows or doors or vents causing drafts or rapid temperature changes.

• Near vibrating, rotating or reciprocating equipment.

2.3 Installing the Heat Shield, Draft Shield and Pan Support

Pan Support

Draft Shield

Heat Shield

Install the heat shield, draft shield and pan support as shown. Turn the pan support until it engages In the locked position.

MB35	EN-5

2.4 Connecting to a Power Supply

Check to ensure the voltage identification label on the Moisture Analyzer matches your local line voltage.

The halogen dryer unit is designed to operate at a specific line voltage (120 V ac or 240 V ac).

CAUTION:

Connection to line voltages that are above or below the rated voltage can cause improper operation or damage to the unit.

Connect power cord as shown. The MB35 is operational when power is applied. The display remains off until the On/Off button is pressed.

Allow the Moisture Analyzer to warm up for at least 30 minutes to stabilize when turned on.

WARNING:

If the power cable supplied is not long enough, use only a proper 3-pin extension cable with an equipment grounding connector.

EN-6	MB35

2.5 Operating Controls

The MB35 Moisture Analyzer controls are grouped as operating buttons and function buttons with three modes of operation.

EDIT MODE – User is changing a parameter, no test running.

RUN MODE – Unit is running a test.

RESULT MODE – Final result.

OPERATING BUTTONS

Turns display On or Off.

Press to enter ANALYZER SETUP screen. (Edit mode)

Print Test Result (if COM parameters are set and PRINT is on).

Accepts selection. (Edit mode) Sends Print command. (Run mode)

Performs Tare function. (Pressing during the test has no effect.)

FUNCTION BUTTONS

		100°		10:00
EDIT MODE
ONLY
	CLEAR			0.000g
	PAN
	PRESS			*
	TARE
		100°		10:00
EDIT MODE
ONLY
	CLEAR			0.000g
	PAN
	PRESS			*
	TARE

Initial press of button highlights temperature numerals. Additional presses increases temperature setting in 5 degree increments.

Initial press of button highlights shut-off selection. Additional presses step through options, AUTO or TIMED (minutes/seconds).

EDIT MODE

ONLY

ANALYZER SETUP

WEIGHT CAL

TEMP CAL

TIME-DATE

RS-232

PRINT

EXIT

In a non-run mode, initial press of button brings up the ANALYZER SETUP screen.

MB35	EN-7

3. Moisture Analyzer Setup

3.1 Language Setting

1. START						ANALYZER SETUP	x6	ANALYZER SETUP
								TEMP CAL
						WEIGHT CAL
						TEMP CAL		TIME-DATE
						TIME-DATE		RS-232
						RS-232		PRINT
						PRINT		EXIT
						EXIT		LANGUAGE

LANGUAGE		LANGUAGE
2. SELECT
SELECT LANGUAGE	or	SELECT LANGUAGE
ENGLISH		ESPANOL

3. ACCEPT	LANGUAGE
	CHANGE ALL TEXT
	TO			or
	ESPANOL
	ARE YOU SURE
		NO
4. FINAL	LANGUAGE
						100		10:00
	ANALYZER WILL
	BE RESET
					LIMPIE			0. 000g
					PLATLLO
					PULSE			*
					TARE

EN-8	MB35

3.2 Weight Calibration

ANALYZER SETUP

WEIGHT CAL

TEMP CAL

TIME-DATE

RS-232

PRINT

EXIT

TO ABORT:

WEIGHT CAL

REMOVE MASS

TO CONTINUE:

TO ABORT

PRESS STRT/STP KEY

WEIGHT CAL

PRESS TARE

CAL SUCCESSFUL

TO ABORT

PRESS STRT/ STP KEY

ANALYZER SETUP

WEIGHT CAL

TEMP CAL

TIME-DATE

RS-232

PRINT

EXIT

WEIGHT CAL

PLACE 20G MASS

TO ABORT

PRESS STRT/STP KEY

ANALYZER SETUP

WEIGHT CAL

TEMP CAL

TIME-DATE

RS-232

PRINT

EXIT

MB35	EN-9

3.3 Temperature Calibration

Note: Temperature Calibration Kit is required.

	ANALYZER SETUP	TEMP CAL
	LOCK OUT
	WEIGHT CAL	REMOVE PAN SUPPORT
	TEMP CAL
/
	LANGUAGE
	BEEPER	ABORT CALIBRATION
	TIME-DATE

TEMP CAL

INSERT CAL FIXTURE

CLOSE COVER

ABORT CALIBRATION

TEMP CAL			TEMP CAL 100°C			TEMP CAL 100°C
CALIBRATION READY			CURRENT TEMP:		¾ C	15 CURRENT TEMP:	100° C
			TM TO CAL POINT:		15:00 MIN	TM TO CAL POINT:	15:00 MIN
PRESS TARE/ACCEPT			ADJ CAL READING:		100° C	ADJ CAL READING: 100° C
ABORT CALIBRATION				ACCEPT NEW CAL		ACCEPT NEW CAL
				ABORT CALIBRATION		ABORT CALIBRATION
Adjust to thermometer reading
/
TEMP CAL 100°C			TEMP CAL 100°C
CURRENT TEMP:	100° C
			CURRENT TEMP:	100° C
TM TO CAL POINT:	15:00 MIN
			TM TO CAL POINT:	15:00 MIN
ADJ CAL READING:	104° C		ADJ CAL READING:	104° C
ACCEPT NEW CAL
			ACCEPT NEW CAL			Adjust to thermometer reading
ABORT CALIBRATION
			ABORT CALIBRATION			/
TEMP CAL 160° C			TEMP CAL 160° C
		15				TEMP CAL 160° C
CURRENT TEMP:	160° C		CURRENT TEMP:	160° C		CURRENT TEMP:	160° C
TM TO CAL POINT:	0:00 MIN		TM TO CAL POINT:	0:00 MIN		TM TO CAL POINT:	0:00 MIN
ADJ CAL READING:	163° C		ADJ CAL READING:	160° C		ADJ CAL READING:	163° C
ACCEPT NEW CAL			ACCEPT NEW CAL			ACCEPT NEW CAL
ABORT CALIBRATION
			ABORT CALIBRATION			ABORT CALIBRATION

ANALYZER SETUP

WEIGHT CAL

TEMP CAL

TIME-DATE

RS-232

PRINT

EXIT

Open the cover, allow unit to cool, remove the calibration fixture, replace the pan support and pan.

EN-10	MB35

3.4 Time and Date Setting

1. TO START						ANALYZER SETUP
						WEIGHT CAL
						TEMP CAL
						TIME-DATE
						RS-232
						PRINT
						EXIT

2. SET FORMAT							TIME - DATE
							FORMAT:	MM/DD/YR
							SET DATE:	07/10/01
							TIME FMT:	12HR
							SET TIME:	11:30 AM
3. Exit without saving					Only when setting data.
							ANALYZER SETUP
							WEIGHT CAL
							TEMP CAL
							TIME-DATE
							RS-232
							PRINT
							EXIT

TIME - DATE

4. SET DATE

FORMAT:	MM/DD/YR
SET DATE:	07	/10/01
TIME FMT:	12HR
SET TIME:	11:30 AM

	X2	ANALYZER SETUP
		WEIGHT CAL
		TEMP CAL
		TIME-DATE
		RS-232
		PRINT
		EXIT
		TIME - DATE
		FORMAT:	DD.MM.YR
		SET DATE:	10.07.01
or		TIME FMT:	12HR
		SET TIME:	11:30 AM

or

Repeat to complete date.

5. SET FMT	TIME - DATE
	FORMAT:	MM/DD/YR
	SET DATE:	07/10/01	or
	TIME FMT:	12HR
	SET TIME:	11:30 AM	Select 12HR or 24HR.

		TIME - DATE
	6. SET TIME
		FORMAT:	MM/DD/YR
		SET DATE:	07/10/01
		TIME FMT:	12HR
		SET TIME:	11	:30 AM

7. ACCEPT AND LEAVE		ANALYZER SETUP
		WEIGHT CAL
		TEMP CAL
		TIME-DATE
		RS-232
		PRINT
		EXIT

or

Repeat for minutes and am/pm.

MB35	EN-11

3.5 RS232 Settings

1.TO START

2.SET BAUD RATE

3.SET PARITY

4.SET DATA BITS

5.SET STOP BITS

6.SET HANDSHAKE

ANALYZER SETUP

WEIGHT CAL

TEMP CAL

TIME-DATE

RS-232

PRINT

EXIT

RS232

BAUD RATE:	9600
PARITY:	NONE
DATA BITS:	8
STOP BITS:	1
HANDSHAKE:	NONE

RS232

BAUD RATE:	9600
PARITY:	NONE
DATA BITS:	8
STOP BITS:	1
HANDSHAKE:	NONE

RS232

BAUD RATE:	9600
PARITY:	NONE
DATA BITS:	8
STOP BITS:	1
HANDSHAKE:	NONE

RS232

BAUD RATE:	9600
PARITY:	NONE
DATA BITS:	8
STOP BITS:	1
HANDSHAKE:	NONE

RS232

BAUD RATE:	9600
PARITY:	NONE
DATA BITS:	8
STOP BITS:	1
HANDSHAKE:	NONE

ANALYZER SETUP

7. ACCEPT & LEAVE
		WEIGHT CAL
		TEMP CAL
		TIME-DATE
		RS-232
		PRINT
		EXIT

X3		ANALYZER SETUP
		WEIGHT CAL
		TEMP CAL
		TIME-DATE
		RS-232
		PRINT
		EXIT

or

Default is 9600.

or

Default is NONE.

or

Default is 8.

or

Default is 1.

or

Default is NONE.

EN-12 MB35

3.6 Setting Print and GLP Printing On or Off

1. To Start:	ANALYZER SETUP			ANALYZER SETUP
	WEIGHT CAL		X4	WEIGHT CAL
	TEMP CAL			TEMP CAL
	TIME-DATE			TIME-DATE
	RS-232			RS-232
	PRINT			PRINT
	EXIT			EXIT
2. Set Print:	PRINT
	PRINT:	OFF	or
	GLP:	OFF
	PRINT INT:	OFF	On or Off
3. Set GLP:	PRINT
	PRINT:	OFF	or
	GLP:	OFF	On or Off
	PRINT INT:	OFF

PRINT
4. Set Print Interval:
PRINT:	OFF	or
GLP:	OFF
PRINT INT:	OFF	Min/Sec

5. To Save:	ANALYZER SETUP
	WEIGHT CAL
	TEMP CAL
	TIME-DATE
	RS-232		Complete
	PRINT
			Setup
	EXIT

	100°		10:00
CLEAR			0.000g
PAN
PRESS			*
TARE

MB35 EN-13

3.7 Adjusting Display Contrast and Brightness

1. To Start:

ANALYZER SETUP

ANALYZER SETUP

X7

TIME-DATE

WEIGHT CAL

TEMP CAL

RS-232

TIME-DATE

PRINT

RS-232

EXIT

PRINT

LANGUAGE

EXIT

DISPLAY

DISPLAY ADJUST

2. Set Contrast:

CONTRAST:

60

or

BRIGHT:

10

Adjust Contrast

3. Set Brightness:

DISPLAY ADJUST

CONTRAST:

60

or

BRIGHT:

10

Adjust Brightness

4. Accept & Leave:

ANALYZER SETUP

X2

TIME-DATE

RS-232

PRINT

EXIT

LANGUAGE

DISPLAY

5. To Save:

ANALYZER SETUP

WEIGHT CAL

TEMP CAL

TIME-DATE

RS-232

PRINT

EXIT

EN-14	MB35

4. Operating Your Moisture Analyzer

Once the Moisture Analyzer parameters have been set, moisture determinations can be made very simply. There are three simple steps to perform:

1. Setting the drying temperature, 2. Setting the drying time, and 3. Preparing the sample.

4.1 Setting the Drying Temperature:

100°

10:00

			or
	CLEAR	0.000g
	PAN		Set temperature from 50°C to 160°C.
	PRESS	*
	TARE

4.2 Setting the Drying Time:

SELECT AUTO OR TIMED

100°

10:00

			or
	SAMPLE	0.000g
	<.500G	*	Select timed or auto.
		FLASHING TIME

TIMED DRYING

100°

7:30

			or
	SAMPL	0.000g
	E
		*
	<.500G		Change time when flashing.

4.3 Sample Preparation

Please keep in mind the importance of preparing your sample, the distribution of the sample on the weighing pan, the type of sample and the temperature range. Remember, the greater the number of uniform samples tested, the greater the accuracy of the results. Careful sample preparation is important for best results. At a minimum, follow these steps.

Results of substances which form crusts (e.g. glucose syrup) or pasty substances (e.g. butter) can be considerably improved by mixing with quartz sand.

For pasty, fat containing and melting substances, use of a glass fiber filter is advantageous to increase the surface area of the sample.

The use of a glass fiber filter can be useful for temperature-sensitive and skin forming substances. In this case, the sample to be dried is covered by the filter and thus receives a ―new surface‖.

MB35	EN-15

4.3 Sample Preparation (Cont).

Clear the pan, press the Tare button.

Incorrect sample distribution	Correct sample distribution
Distribution	Correct amount
Piling	Homogenously distributed
Excessive amount

4.4 Running the Test

130°

05:00

				Initial display.
SAMPLE	0.000g
<.500G	*
				Place sample on pan.
	130°		05:00	(See above for correct sample distribution)
	CLOSE		0.000g
	COVER		*
					Start process.
			130°	05:00

TEST

READY 1.300g

PRESS *

START

Sample during drying process.

130°

05:00

130°C 29.60%

02:45 * 0.915G

Test end.

100°

05:00

TEST

OVER... 29.60%

05:00 * 0.915G

EN-16	MB35

4.5 RS232 Command Table

Output Formats

Data output can be initiated in one of three ways:

1.By pressing the Print button;

2.Using the Print Interval feature;

3.Sending a print command (―P‖) from a computer.

RS232 Commands

All communication is accomplished using standard ASCII format. Only the characters shown in the following table are acknowledged by the Moisture Analyzer. Invalid command response "ES" error indicates the Moisture Analyzer has not recognized the command. Commands sent to the Moisture Analyzer must be terminated with a Line Feed or carriage return-line line feed (CRLF). Data output by the Moisture Analyzer is always terminated with a carriage return-line feed (CRLF).

	RS232 COMMAND TABLE
Command
Character	Description
V	Print SR Version
ESC V	Print S/N (unit ID)
?	Print current mode.
TIME	Print Current Time
DATE	Print Current Date
P	Print elapsed time and present reading

RS232 Pin out

The following table illustrates the pin-out connections on the RS232 connector.

1		N/C
2	<–	Date Out (TXD)
3	–>	Date Out (RXD)
4&6		Pins 4 and 6 are connected together.
5		Ground
7	–>	Clear to send (CTS)
8	<–	Request to send (RTS)
9		N/C

MB35	EN-17

5. Care and Maintenance

In this section, you will learn how to keep your Moisture Analyzer in good condition and how to replace expendable parts.

5.1 Cleaning Interior/Exterior Components

To continue to obtain precise measurements, it is advisable to clean the interior components at regular intervals. Please note the following instructions for cleaning your instrument.

Disconnect the instrument from the power supply before cleaning.

Cleaning Temperature Sensor and Protective Glass

Check the protective glass and the temperature sensor for debris which could impede the operation. If the glass appears dirty, clean the surface facing the compartment using a commercial glass cleaner. If the sensor is dirty, clean using a mild cleaning agent.

Removing Glass for Cleaning

If the inside of the glass is dirty, open the cover and remove the four cover screws as shown.

Remove the glass holder and glass from the cover and clean with a commercial glass cleaner on both sides.

Reassemble after cleaning.

EN-18	MB35

5.2 Replacing Power Line Fuse

If the instrument display fails to light after switching it on, check the power outlet first. If power is available, and the instrument fails to operate, the power fuse may be open (blown).

Disconnect the instrument from the power supply before cleaning.

Using a screwdriver, turn the fuse holder to the left (counterclockwise) and remove the fuse.

Check the condition of the fuse. Replace blown fuse by those of the same type with the same rated value (5 x 20 mm, T6.3H 250 V).

NOTE: If the fuse is good and power is available at the outlet, the cord or instrument may be defective. Try a new cord. If this does not work, the instrument should be sent back for servicing.

The use of a fuse of a different type or with a different value, or bridging or shunting the fuse is not allowed and can possibly cause a hazard to your safety and lead to instrument damage!

5.3 Resetting the dryer thermal overload device

NOTE: This procedure only applies to units that contain an access hole to the thermal overload protection device. See illustrations.

If the dryer has overheated and the thermal overload protection device has responded, it can be reset as follows:

Disconnect the unit from the power supply.

Lift the top cover straight up and remove the access hole cover from the access hole using a flat head screwdriver.

Reset the overload device with your finger.

Replace the access hole cover and reconnect unit to power supply.

MB35 EN-19

5.4 Accessories
Description	Ohaus Part No.
Span Calibration Mass 20 g ASTM Class 1 Tolerance	80780022
Security Locking Cable	80850043
RS232 Interface Cable, 9 pin serial extension - PC to MB45	80500525
RS232 Interface Cable, MB35 to printer (25 pin) SF42	80500571
Data Printer	SF42
Sample Pans 90mm diameter	80850086
Glass Fiber Pads	80850087
Pan, Re-usable - 90mm (set of three)	80850088
In-use Cover	80850085
Temperature Calibration Kit	11113857
Pan Handler	11113873

5.5 Specifications

Model MB35
Capacity		35g
Readability		0.002g, 0.02%
Temp. Settings		50°C to 160°C (5°increments)
Drying Programs		Standard
Switch-off Criteria		Timed, Auto
Heat Source		Halogen
Calibration		External calibration mass-20g
Dimensions (DxWxH) (cm)		35.5 x 19 x 15.2
Pan Size		90 mm. diameter
Weight (kg)		4.5
Shipping Weight (kg)		6.4
Admissible ambient conditions
Indoor use only
Altitude:	Up to 2000m
Temperature range:	5 ºC to 40 ºC
Atmospheric humidity:	Maximum relative humidity 80% for temperatures up to 31 °C
	decreasing linearly to 50% relative humidity at 40 °C.
Warm-up time:	At least 60 minutes after connecting the instrument to the
	power supply; when switched on from standby-mode, the
	instrument is ready for operation immediately.
Voltage fluctuations:	Mains supply voltage fluctuations up to –15% +10% of the
	nominal range
Over voltage category:	II
Pollution degree:	2
Power load:	Max. 450 W during drying process
Current consumption:	4 A or 2 A, according to the heating element
Power supply voltage:	100 V – 120 V or 200 V – 240 V, 50/60 Hz
	(the voltage is given by the heating element)
Power line fuse:	1 piece, 5 x 20 mm, T6,3 H 250 V