Hart Scientific 7011 Manual de usuario

Model 7011

Temperature Bath

User Manual

Rev. 881801

Hart Scientific

799 E Utah Valley Drive

American Fork, Utah 84003

Telephone (801) 763-1600 • Fax (801) 763-1010

http://www.hartscientific.com

WARNING

To ensure the safety of operating personnel, and to avoid damage to this unit:

DO NOT operate this unit without a properly grounded, properly polarized power cord.

DO NOT connect this unit to a non-grounded, non-polarized outlet.

DO use a ground fault interrupt device.

WARNING

EXTREMELY COLD TEMPERATURES PRESENT

in this equipment.

FREEZER BURNS AND FROSTBITE

may result if personnel fail to observe safety precautions.

WARNING

HIGH TEMPERATURES PRESENT

in this equipment.

FIRES AND SEVERE BURNS

may result if personnel fail to observe safety precautions.

WARNING

Fluids used in this bath may produce

NOXIOUS OR TOXIC FUMES

under certain circumstances.

Consult the fluid manufacturer’s MSDS (Material Safety Data Sheet).

PROPER VENTILATION AND

SAFETY PRECAUTIONS MUST BE OBSERVED.

Table of Contents

1 Introduction. . . . . . . . . . . . . . . . . . . . . . 9

2 Specifications and Environmental Conditions . . 11

2.1 Specifications . . . . . . . . . . . . . . . . . . . . . . 11

2.2 Environmental Conditions . . . . . . . . . . . . . . . . 11

2.3 Warranty. . . . . . . . . . . . . . . . . . . . . . . . . 12

3 Safety Guidelines . . . . . . . . . . . . . . . . . . 13

4 Quick Start . . . . . . . . . . . . . . . . . . . . . 15

4.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2 Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.3 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.4 Setting the Temperature. . . . . . . . . . . . . . . . . 16

5 Installation. . . . . . . . . . . . . . . . . . . . . . 19

5.1 Bath Environment . . . . . . . . . . . . . . . . . . . . 19

5.2 “Dry-out” Period . . . . . . . . . . . . . . . . . . . . . 19

5.3 Bath Preparation and Filling. . . . . . . . . . . . . . . 19

5.4 Probe . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.5 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6 Bath Use. . . . . . . . . . . . . . . . . . . . . . . 21

6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2 Comparison Calibration . . . . . . . . . . . . . . . . . 21

6.3 Calibration of Multiple Probes . . . . . . . . . . . . . . 22

7 Parts and Controls . . . . . . . . . . . . . . . . . 23

7.1 Front Control Panel . . . . . . . . . . . . . . . . . . . 23

7.2 Side Panel. . . . . . . . . . . . . . . . . . . . . . . . 24

7.3 Back Panel . . . . . . . . . . . . . . . . . . . . . . . 25

7.4 Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

8 General Operation . . . . . . . . . . . . . . . . . 29

8.1 Bath Fluid . . . . . . . . . . . . . . . . . . . . . . . . 29

8.1.1 Temperature Range. . . . . . . . . . . . . . . . . . . . . . . 29

8.1.2 Viscosity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.1.3 Specific Heat . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8.1.4 Thermal Conductivity . . . . . . . . . . . . . . . . . . . . . . 30

8.1.5 Thermal Expansion . . . . . . . . . . . . . . . . . . . . . . . 30

8.1.6 Electrical Resistivity. . . . . . . . . . . . . . . . . . . . . . . 30

8.1.7 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.1.8 Fluid Lifetime . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8.1.9 Cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8.1.10 Commonly Used Fluids . . . . . . . . . . . . . . . . . . . . . 31

8.1.10.1 Water. . . . . . . . . . . . . . . . . . . . . . . . . 31

8.1.10.2 Ethylene Glycol. . . . . . . . . . . . . . . . . . . . 31

8.1.10.3 Methanol . . . . . . . . . . . . . . . . . . . . . . . 31

8.1.10.4 Mineral Oil . . . . . . . . . . . . . . . . . . . . . . 31

8.1.10.5 Silicone oil . . . . . . . . . . . . . . . . . . . . . . 32

8.1.11 Fluid Characteristics Charts. . . . . . . . . . . . . . . . . . . 32

8.1.11.1 Limitations and Disclaimer . . . . . . . . . . . . . . 32

8.1.11.2 About the Graph . . . . . . . . . . . . . . . . . . . 32

8.2 Stirring. . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.3 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.4 Heater . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.5 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.6 Temperature Controller . . . . . . . . . . . . . . . . . 36

9 Controller Operation . . . . . . . . . . . . . . . . 37

9.1 Bath Temperature . . . . . . . . . . . . . . . . . . . . 37

9.2 Reset Cut-out . . . . . . . . . . . . . . . . . . . . . . 37

9.3 Temperature Set-point. . . . . . . . . . . . . . . . . . 39

9.3.1 Programmable Set-points. . . . . . . . . . . . . . . . . . . . 39

9.3.2 Set-point Value . . . . . . . . . . . . . . . . . . . . . . . . . 39

9.3.3 Set-point Vernier . . . . . . . . . . . . . . . . . . . . . . . . 40

9.4 Temperature Scale Units . . . . . . . . . . . . . . . . 40

9.5 Secondary Menu . . . . . . . . . . . . . . . . . . . . 41

9.6 Heater Power . . . . . . . . . . . . . . . . . . . . . . 41

9.7 Proportional Band . . . . . . . . . . . . . . . . . . . . 42

9.8 Cut-out. . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.9 Controller Configuration . . . . . . . . . . . . . . . . . 45

9.10 Probe Parameters Menu . . . . . . . . . . . . . . . . 45

9.10.1 DO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.10.2 DG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.11 Operating Parameters. . . . . . . . . . . . . . . . . . 45

9.11.1 Cut-out Reset Mode. . . . . . . . . . . . . . . . . . . . . . . 46

9.12 Calibration Parameters . . . . . . . . . . . . . . . . . 46

9.12.1 CTO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9.12.2 H and L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

10 Bath Calibration. . . . . . . . . . . . . . . . . . . 49

10.1 Calibration Points . . . . . . . . . . . . . . . . . . . . 49

10.2 Measuring the Set-point Error. . . . . . . . . . . . . . 49

10.3 Computing DO and DG . . . . . . . . . . . . . . . . . 49

10.4 Calibration Example. . . . . . . . . . . . . . . . . . . 51

11 Maintenance. . . . . . . . . . . . . . . . . . . . . 53

11.1 Draining the Bath . . . . . . . . . . . . . . . . . . . . 54

12 Charging Instructions . . . . . . . . . . . . . . . 55

12.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . 55

12.2 Charging. . . . . . . . . . . . . . . . . . . . . . . . . 55

13 Troubleshooting . . . . . . . . . . . . . . . . . . 57

13.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . 57

13.1.1 The heater indicator LED stays red but the temperature

does not increase . . . . . . . . . . . . . . . . . . . . . . . . 57

13.1.2 The controller display flashes “CUT-OUT” and the heater

does not operate . . . . . . . . . . . . . . . . . . . . . . . . 57

13.1.3 The display flashes “CUT-OUT” and an incorrect

process temperature . . . . . . . . . . . . . . . . . . . . . . 58

13.1.4 The displayed process temperature is in error and the

controller remains in the cooling or the heating state at

any set-point value . . . . . . . . . . . . . . . . . . . . . . . 58

13.1.5 The controller controls or attempts to control at an

inaccurate temperature . . . . . . . . . . . . . . . . . . . . . 58

13.1.6 The controller shows that the output power is steady

but the process temperature is unstable . . . . . . . . . . . . 59

13.1.7 The controller alternately heats for a while then cools . . . . . 59

13.1.8 The controller erratically heats then cools, control is unstable . 59

13.1.9 The bath does not achieve low temperatures. . . . . . . . . . 59

13.2 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . 60

vii

viii

Figures and Tables

Figure 1 Bath Assembly . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 2 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 3 Refrigeration Controls - Side Panel. . . . . . . . . . . . . 24

Figure 4 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 5 Lid Options . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 2 Table of various fluids and their properties . . . . . . . . . 33

Figure 6 Chart of various bath fluids and their properties . . . . . . 34

Figure 7 Controller Flowchart. . . . . . . . . . . . . . . . . . . . . 38

Figure 8 Bath temperature fluctuation at various proportional

band settings . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 3 Proportional Band — Fluid Table . . . . . . . . . . . . . . 43

Figure 9 Sample calibration computations . . . . . . . . . . . . . . 50

Figure 10 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . 60

1 Introduction

The Hart Scientific Model 7011 is a very precise constant temperature bath.

An innovative state of the art solid-state temperature controller has been incor-

porated which maintains the bath temperature with extreme stability. The con-

troller uses a micro controller to execute the many operating functions.

User interface is provided by the 8-digit LED display and four key-switches.

The tank for the 7011 is stainless steel and holds 25 liters. The 7011 uses a

refrigeration system that is CFC free.

7011 Manual Rev. 881801 9

1 Introduction

High Precision Bath HART

SCIENTIFIC

SET DOWN UP EXIT

POWER

COOLING

HEATER

Figure 1 Bath Assembly

2 Specifications and Environmental

Conditions

2.1 Specifications

See Table 1.

2.2 Environmental Conditions

Although the instrument has been designed for optimum durability and trou-

ble-free operation, it must be handled with care. The instrument should not be

operated in an excessively dusty or dirty environment. Maintenance and clean-

ing recommendations can be found in the Maintenance Section of this manual.

The instrument operates safely under the following conditions:

7011 Manual Rev. 881801 11

2 Specifications and Environmental Conditions

Range –10°C to 110°C

Stability 0°C ±0.001°C

25°C ±0.0005°C

100°C ±0.0008°C

Uniformity ±0.001°C, ±0.002°C with oil at 100°C

Temperature Setting Digital display with push-button entry

Set-point Resolution 0.002°C; high-resolution mode, 0.00003°C

Display Temp. Resolution 0.01°C

Digital Setting Accuracy ±1°C

Digital Setting Repeatability ±0.005°C

Heaters 500 and 1000 watt

Access Opening 5” x 10” (127 x 254 mm)

Depth 12” (305 mm)

Wetted Parts 304 Stainless Steel

Power 115 VAC (±10%), 60 Hz, 13.2 amps

(230 VAC (±10%), 50 Hz 6.8 amps, option

available)

Volume 6.6 gallons (25 liters)

Size 21.5”H x 27” W x 15.5”D

(546 x 686 x 394 mm)

Weight 125 lbs (56.7 kg)

Table 1 Specifications

•temperature range: 5 - 50°C (41 - 122°F)

•ambient relative humidity: 15 - 50%

•pressure: 75kPa - 106kPa

•mains voltage within ± 10% of nominal

•vibrations in the calibration environment should be minimized

•altitude does not effect the performance or safety of the unit

2.3 Warranty

Hart Scientific, Inc. (Hart) warrants this product to be free from defects in ma-

terial and workmanship under normal use and service for a period as stated in

our current product catalog from the date of shipment. This warranty extends

only to the original purchaser and shall not apply to any product which, in

Hart’s sole opinion, has been subject to misuse, alteration, abuse or abnormal

conditions of operation or handling.

Software is warranted to operate in accordance with its programmed instruc-

tions on appropriate Hart products. It is not warranted to be error free.

Hart’s obligation under this warranty is limited to repair or replacement of a

product which is returned to Hart within the warranty period and is determined,

upon examination by Hart, to be defective. If Hart determines that the defect or

malfunction has been caused by misuse, alteration, abuse or abnormal condi-

tions or operation or handling, Hart will repair the product and bill the pur-

chaser for the reasonable cost of repair.

To exercise this warranty, the purchaser must forward the product after calling

or writing Hart for authorization. Hart assumes NO risk for in-transit damage.

For service or assistance, please contact the manufacturer.

Hart Scientific, Inc.

799 East Utah Valley Drive

American Fork, UT 84003-9775

Phone: (801) 763-1600

Fax: (801) 763-1010

E-mail: [email protected]

THE FOREGOING WARRANTY IS PURCHASER’S SOLE AND EXCLUSIVE

REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY

OR MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE

OR USE. HART SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, IN-

CIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSS WHETHER IN

CONTRACT, TORT, OR OTHERWISE.

12 Manual Rev. 881801 Hart Scientific

2 Specifications and Environmental Conditions

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