Fluke 9140 User Manual

Hart Scientific

9140

Dry-well Calibrator User’s Guide

Rev. 5B1702

Fluke Corporation, Hart Scientific Division

799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USA Phone: [phone] • Telefax: +1.801.763.1010

E-mail: [e-mail]

www.hartscientific.com

Subject to change without notice. • Copyright © 2005 • Printed in USA

Rev. 5B1702

Table of Contents

1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.2 CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . . 5

2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3Specifications and Environmental Conditions . . . . . . . . . . 9

3.1Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . 9

3.3Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.3Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.4Setting the Temperature . . . . . . . . . . . . . . . . . . . . . . . 12

5Parts and Controls . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.2	Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.3Constant Temperature Block Assembly . . . . . . . . . . . . . . . 15

5.3.1 Constant Temperature Block . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3.2 Probe Sleeves and Tongs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6General Operation . . . . . . . . . . . . . . . . . . . . . . . . 17

6.1Calibrator Set-Up . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.2Changing Display Units . . . . . . . . . . . . . . . . . . . . . . . 17

6.3Switching to 230 V Operation. . . . . . . . . . . . . . . . . . . . 17

6.4Setting the Temperature . . . . . . . . . . . . . . . . . . . . . . . 18

6.5Calibrating Probes. . . . . . . . . . . . . . . . . . . . . . . . . . 18

7Controller Operation . . . . . . . . . . . . . . . . . . . . . . . 21

7.1Well Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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7.2Temperature Set-point . . . . . . . . . . . . . . . . . . . . . . . . 21

7.2.1 Programmable Set-points . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.2.2 Set-point Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.2.3 Temperature Scale Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7.3Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

	7.3.1	Scan Control . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
	7.3.2	Scan Rate . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.4	Temperature Display Hold		. . . . . . . . . . . . . . . . . . . . . 25

7.4.1 Hold Temperature Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.4.2 Mode Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.4.3 Switch Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.4.4 Switch Test Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.5Secondary Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.5.1 Heater Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.5.2 Proportional Band. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7.6Controller Configuration . . . . . . . . . . . . . . . . . . . . . . 29

7.6.1 Calibration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.6.1.1 R0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.6.1.2 ALPHA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 7.6.1.3 DELTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.7Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . 30

7.8Serial Interface Parameters . . . . . . . . . . . . . . . . . . . . . 30

7.8.0.1 Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.8.1 Sample Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.8.1.1 Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.8.1.2 Linefeed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8 Digital Communication Interface . . . . . . . . . . . . . . . . 33

8.1Serial Communications . . . . . . . . . . . . . . . . . . . . . . . 33

	8.1.1	Wiring . . . . . . .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
	8.1.2	Setup . . . . . . . .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
		8.1.2.1	Baud Rate . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
		8.1.2.2	Sample Period. . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
		8.1.2.3	Duplex Mode . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
		8.1.2.4	Linefeed. . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
	8.1.3	Serial Operation. . .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.2	Interface Commands			. . . . . . . . . . . . . . . . . . . . . . . . 35

9 Test Probe Calibration . . . . . . . . . . . . . . . . . . . . . . 39

9.1Comparison Methods . . . . . . . . . . . . . . . . . . . . . . . . 39

9.1.1 Calibrating a Single Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

9.1.2 Comparison Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

9.1.3 Calibration of Multiple Probes . . . . . . . . . . . . . . . . . . . . . . . . . 40

9.2Dry-well Characteristics. . . . . . . . . . . . . . . . . . . . . . . 40

9.2.1 Vertical Gradient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

9.2.2 Heating and Cooling Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

9.2.3 Stabilization and Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

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10 Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . 43

10.1Calibration Points . . . . . . . . . . . . . . . . . . . . . . . . . . 43

10.2Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . 43

10.2.1 Compute DELTA: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

10.2.2 Compute R & ALPHA: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

10.2.3 Accuracy & Repeatability. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

11	Maintenance . . . . .	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	47
12	Troubleshooting. . . .	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	49

12.1Troubleshooting Problems, Possible Causes, and Solutions . . . . 49

12.2CE Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

12.2.1 EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

12.2.2 Low Voltage Directive (Safety) . . . . . . . . . . . . . . . . . . . . . . . . . 50

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Figures

Figure 1 9140 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 2 9140 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 3 Inserts available for the 9140 block assembly . . . . . . . . . . . . . . 15 Figure 4 Controller Operation Flowchart . . . . . . . . . . . . . . . . . . . . . 22 Figure 5 Well temperature fluctuation at various proportional band settings . . . 27 Figure 6 Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 7 Typical Heating Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Figure 8 Typical Cooling Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . 41

iv

Tables

Table 1	International Electrical Symbols . . . . . . . . . . . . . . . . . . . . .	1
Table 2	9140 controller communications commands. . . . . . . . . . . . . . .	36
Table 3	9140 controller communications commands continued . . . . . . . . .	37

v

1 Before You Start

Symbols Used

1 Before You Start

1.1Symbols Used

Table 1 lists the symbols used on the instrument or in this manual and the meaning of each symbol.

Table 1 International Electrical Symbols

			Symbol				Description
							AC (Alternating Current)
							AC-DC
							Battery
							Complies with European Union directives
							DC
							Double Insulated
							Electric Shock
							Fuse
							PE Ground
							Hot Surface (Burn Hazard)
							Read the User’s Manual (Important Information)
							Off
							On

1

9140 Dry-well Calibrator

User’s Guide

Symbol Description

Canadian Standards Association

OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from the fixed installation. Examples include household, office, and laboratory appliances.

C-TIC Australian EMC

The European Waste Electrical and Electronic Equipment (WEEE) Directive (2002/96/EC) mark.

1.2Safety Information

Use the instrument only as specified in this manual. Otherwise, the protection provided by the instrument may be impaired. Refer to the safety information below and throughout the manual.

The following definitions apply to the terms “Warning” and “Caution”.

•“Warning” identifies conditions and actions that may pose hazards to the user.

•“Caution” identifies conditions and actions that may damage the instrument being used.

1.2.1 WARNINGS

To avoid personal injury, follow these guidelines.

GENERAL

•DO NOT use this instrument in environments other than those listed in the User’s Guide.

•Inspect the instrument for damage before each use. DO NOT use the instrument if it appears damaged or operates abnormally.

•Follow all safety guidelines listed in the user’s manual.

•Calibration Equipment should only be used by Trained Personnel.

•If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

•Before initial use, or after transport, or after storage in humid or semi-hu- mid environments, or anytime the dry-well has not been energized for more than 10 days, the instrument needs to be energized for a "dry-out" period of 2 hours before it can be assumed to meet all of the safety requirements of the IEC 1010-1. If the product is wet or has been in a wet environment, take necessary measures to remove moisture prior to apply-

2

1 Before You Start

Safety Information

ing power such as storage in a low humidity temperature chamber operating at 50°C for 4 hours or more.

•DO NOT use this instrument for any application other than calibration work. The instrument was designed for temperature calibration. Any other use of the instrument may cause unknown hazards to the user.

•Completely unattended operation is not recommended.

•Overhead clearance is required. DO NOT place the instrument under a cabinet or other structure. Always leave enough clearance to allow for safe and easy insertion and removal of probes.

•If the instrument is used in a manner not in accordance with the equipment design, the operation of the dry-well may be impaired or safety hazards may arise.

•This instrument is intended for indoor use only.

BURN HAZARDS

•DO NOT turn the instrument upside down with the inserts in place; the inserts will fall out.

•DO NOT operate near flammable materials.

•Use of this instrument at HIGH TEMPERATURES for extended periods of time requires caution.

•DO NOT touch the well access surface of the instrument.

•The block vent may be very hot due to the fan blowing across the heater block of the dry-well.

•The temperature of the well access is the same as the actual display temperature, e.g. if the instrument is set to 700°C and the display reads 700°C, the well is at 700°C.

•For top loading dry-wells, the top sheet metal of the dry-well may exhibit extreme temperatures for areas close to the well access.

•The air over the well can reach temperatures greater that 200°C for high temperature (400°C and higher) dry-wells. Note: Probes and inserts may be hot and should only be inserted and removed from the instrument when the instrument is set at temperatures less than 50°C. Use extreme care when removing hot inserts.

•DO NOT turn off the instrument at temperatures higher than 100°C. This could create a hazardous situation. Select a set-point less than 100°C and allow the instrument to cool before turning it off.

•The high temperatures present in dry-wells designed for operation at 300°C and higher may result in fires and severe burns if safety precautions are not observed.

•For compliance with IEC 1010-1, it is recommended that the cutout mode always be set to the manual mode requiring user intervention to reset the instrument.

3

9140 Dry-well Calibrator

User’s Guide

ELECTRICAL SHOCK

•These guidelines must be followed to ensure that the safety mechanisms in this instrument will operate properly. This instrument must be plugged into a 115 VAC, 60Hz (230 VAC, 50Hz optional), AC only electric outlet. The power cord of the instrument is equipped with a three-pronged grounding plug for your protection against electrical shock hazards. It must be plugged directly into a properly grounded three-prong receptacle. The receptacle must be installed in accordance with local codes and ordinances. Consult a qualified electrician. DO NOT use an extension cord or adapter plug.

•If supplied with user accessible fuses, always replace the fuse with one of the same rating, voltage, and type.

•Always replace the power cord with an approved cord of the correct rating and type.

•HIGH VOLTAGE is used in the operation of this equipment. SEVERE INJURY or DEATH may result if personnel fail to observe safety precautions. Before working inside the equipment, turn power off and disconnect power cord.

1.2.2 CAUTIONS

•Always operate this instrument at room temperature between 41°F and 122°F (5°C to 50°C). Allow sufficient air circulation by leaving at least 6 inches (15 cm) of clearance around the instrument. Overhead clearance is required. DO NOT place unit under any structure.

•Component lifetime can be shortened by continuous high temperature operation.

•DO NOT leave the sleeve(s) in the instrument for prolonged periods. Due to the high operating temperatures of the instrument, the sleeves should be removed after each use and buffed with a Scotch-Brite® pad or emery cloth. (See Maintenance, Section .)

•DO NOT apply any type of voltage to the display hold terminals. Applying a voltage to the terminals may cause damage to the controller.

•DO NOT use fluids to clean out the well. Fluids could leak into electronics and damage the instrument.

•Never introduce any foreign material into the probe hole of the insert. Fluids, etc. can leak into the instrument causing damage.

•DO NOT change the values of the calibration constants from the factory set values. The correct setting of these parameters is important to the safety and proper operation of the calibrator.

•DO NOT slam the probe sheath in to the well. This type of action can cause a shock to the sensor and affect the calibration.

4

1 Before You Start

Authorized Service Centers

•The instrument and any thermometer probes used with it are sensitive instruments that can be easily damaged. Always handle these devices with care. DO NOT allow them to be dropped, struck, stressed, or overheated.

•The Factory Reset Sequence (see Section 12.1, Troubleshooting) should be performed only by authorized personnel if no other action is successful in correcting a malfunction. You must have a copy of the most recent Report of Calibration to restore the calibration parameters.

•DO NOT operate this instrument in an excessively wet, oily, dusty, or dirty environment. Always keep the well and inserts clean and clear of foreign material.

•The dry-well is a precision instrument. Although it has been designed for optimum durability and trouble free operation, it must be handled with care. Always carry the instrument in an upright position to prevent the probe sleeves from dropping out. The convenient handle allows for hand carrying the instrument.

•If a mains supply power fluctuation occurs, immediately turn off the instrument. Power bumps from brown-outs could damage the instrument. Wait until the power has stabilized before re-energizing the instrument.

•The probe and the block may expand at different rates. Allow for probe expansion inside the well as the block heats. Otherwise, the probe may become stuck in the well.

•Most probes have handle temperature limits. Be sure that the probe handle temperature limit is not exceeded in the air above the instrument. If the probe handle limits are exceeded, the probe may be permanently damaged.

1.3Authorized Service Centers

Please contact one of the following authorized Service Centers to coordinate service on your Hart product:

Fluke Corporation, Hart Scientific Division

799 E. Utah Valley Drive

American Fork, UT 84003-9775

USA

Phone: [phone]

Telefax: +1.801.763.1010

E-mail: [e-mail]

Fluke Nederland B.V.

Customer Support Services

5

9140 Dry-well Calibrator

User’s Guide

Science Park Eindhoven 5108

5692 EC Son

NETHERLANDS

Phone: [phone]

Telefax: [phone]

E-mail: [e-mail]

Fluke Int'l Corporation

Service Center - Instrimpex

Room 2301 Sciteck Tower

22 Jianguomenwai Dajie

Chao Yang District

Beijing 100004, PRC

CHINA

Phone: [phone]

Telefax: [phone]

E-mail: [e-mail]

Fluke South East Asia Pte Ltd.

Fluke ASEAN Regional Office

Service Center

60 Alexandra Terrace #03-16

The Comtech (Lobby D)

118502

SINGAPORE

Phone: [phone]

Telefax: [phone]

E-mail: [e-mail]

When contacting these Service Centers for support, please have the following information available:

•Model Number

•Serial Number

•Voltage

•Complete description of the problem

6

2 Introduction

2 Introduction

The Hart Scientific 9140 Mid-Range Field Calibrator may be used as a portable instrument or bench top temperature calibrator for calibrating thermocouple and RTD temperature probes. The 9140 is small enough to use in the field, and accurate enough to use in the lab.

The instrument features:

•Rapid heating and cooling

•Interchangeable multiple hole aluminum probe sleeves

•Convenient hand strap

•RS-232 interface capability

Built in programmable features include:

•Temperature scan rate control

•Temperature switch hold

•Eight Setpoint memory

•Adjustable readout in °C or °F

The temperature is accurately controlled by Hart’s hybrid analog/digital controller. The controller uses a precision platinum RTD as a sensor and controls the well temperature with a solid state relay (triac) driven heater.

The LED front panel continuously shows the current well temperature. The temperature may be easily set with the control buttons to any desired temperature within the specified range. The instrument’s multiple fault protection devices insure user and instrument safety and protection.

The 9140 dry-well calibrator was designed for portability, low cost, and ease of operation. Through proper use the instrument will provide continued accurate calibration of temperature sensors and devices. The user should be familiar with the safety guidelines and operating procedures of the calibrator as described in the instruction manual.

7

3 Specifications and Environmental Conditions

Specifications

3Specifications and Environmental Conditions

3.1Specifications

The following table lists the specifications for this instrument. Accuracy specifications are applicable for a one-year calibration interval. In line with normal prudent metrology practices, Hart Scientific recommends a short-cycle interval of six months for new units during the first year.

Power	115 VAC (±10%), 4.4 A or 230 VAC (±10%), 2.2 A, switchable 500 W
Ambient Temperature	5–50°C (41–122°F)
Operating Range	35–350°C (95–662°F)
Resolution	0.1°C or °F resolution
Readout	Switchable°C or °F
Accuracy	±0.5°C (±0.9°F), in holes greater than 1/4" (6.35 mm) accuracy is ±1°C
	(±1.8°F)
Stability	±0.03°C at 50°C, ±0.05°C at 350°C
Uniformity	±0.4°C typical, ±0.1°C with similarly sized wells
Controller	Digital controller with data retention
Heater	500W
Heating Time	12 minutes from ambient to 350°C
Cooling Time	15 minutes from 350°C to 100°C
Cooling	2 speed internal fan
Stabilization Time	7 minutes
Immersion Depth	124 mm (4.88 inches)
Fault Protection	Sensor burnout and short protection, over temperature thermal cut-out, elec-
	trical fuses
Test Wells	31.8 mm dia. x 123.7 mm deep (1.25" x 4.87"). Multi-hole inserts are
	available.
Exterior Dimension	152.4 mm H x 85.7 mm W x 196.9 mm D (6" x 3.375" x 7.75")
Weight	2.7 kg (6 lbs.)
Fuse Rating	115 V: 6 A (fast acting), 250 V
	230 V: 3.15 A (fast acting), 250 V
Safety	OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per
	IEC1010-1

3.2Environmental 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

9

9140 Dry-well Calibrator

User’s Guide

operated in an excessively dusty or dirty environment. Maintenance and cleaning recommendations can be found in the Maintenance Section of this manual.

The instrument operates safely under the following conditions:

•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

3.3Warranty

Fluke Corporation, Hart Scientific Division (Hart) warrants this product to be free from defects in material 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 instructions 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 conditions or operation or handling, Hart will repair the product and bill the purchaser for the reasonable cost of repair.

To exercise this warranty, contact an Authorized Service Center (see Section 1.3). Service Centers assume NO risk for in-transit damage.

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, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSS WHETHER IN CONTRACT, TORT, OR OTHERWISE.

10