Each product from Fluke Corporation, Hart Scientific Division ("Hart") is warranted to be free from de
fects in material and workmanship under normal use and service. The warranty period is 2 years for the
Thermometer Readout. The warranty period begins on the date of the shipment. Parts, product repairs,
and services are warranted for 90 days. The warranty extends only to the original buyer or end-user cus
tomer of a Hart authorized reseller, and does not apply to fuses, disposable batteries or to any other prod
uct, which in Hart's opinion, has been misused, altered, neglected, or damaged by accident or abnormal
conditions of operation or handling. Hart warrants that software will operate substantially in accordance
with its functional specifications for 90 days and that it has been properly recorded on non-defective me
dia. Hart does not warrant that software will be error free or operate without interruption. Hart does not
warrant calibrations on the Thermometer Readout.
Hart authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Hart. Warranty support is
available if product is purchased through a Hart authorized sales outlet or Buyer has paid the applicable
international price. Hart reserves the right to invoice Buyer for importation costs of repairs/replacement
parts when product purchased in one country is submitted for repair in another country.
Hart's warranty obligation is limited, at Hart's option, to refund of the purchase price, free of charge re
pair, or replacement of a defective product which is returned to a Hart authorized service center within
the warranty period.
To obtain warranty service, contact your nearest Hart authorized service center or send the product, with
a description of the difficulty, postage, and insurance prepaid (FOB Destination), to the nearest Hart authorized service center. Hart assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Hart determines that the
failure was caused by misuse, alteration, accident or abnormal condition or operation or handling, Hart
will provide an estimate or repair costs and obtain authorization before commencing the work. Following
repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for
the repair and return transportation charges (FOB Shipping Point).
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Rev. 692801
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IM
PLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
HART SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL. OR CONSE
QUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM
BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY OTHER
THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court of com
petent jurisdiction, such holding will not affect the validity or enforceability of any other provision.
Fluke Corporation, Hart Scientific Division
799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USA
Phone: +1.801.763.1600 • Telefax: +1.801.763.1010
E-mail: support@hartscientific.com
Table 1 lists the symbols that may be used on the instrument or in this manual
Tabl e1 International Electrical Symbols
and the meaning of each symbol.
SymbolDescription
AC (Alternating Current)
AC-DC
Battery
1 Before You Start
Symbols Used
Complies with European Union Directives
DC (Direct Current)
Double Insulated
Electric Shock
Fuse
PE Ground
Hot Surface (Burn Hazard)
Read the User’s Manual (Important Information)
Off
1
1529 Chub-E4 Thermometer Readout
User’s Guide
SymbolDescription
On
Canadian Standards Association
OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 re
fers 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 mark
The European Waste Electrical and Electronic Equipment (WEEE) Directive
(2002/96/EC) mark.
1.2Safety Information
Use this instrument only as specified in this manual. Otherwise, the protection
provided by the instrument may be impaired. Refer to the safety information in
Sections 1.2.1 and 1.2.2.
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 instru-
ment being used.
1.2.1Warnings
•
DO NOT use this unit in environments other than those listed in the
User’s Guide.
•
Follow all safety guidelines listed in the User’s Guide.
•
Calibration equipment should only be used by trained personnel.
•
This instrument can measure extreme temperatures. Precautions must be
taken to prevent personal injury or damage to objects. Probes may be ex
tremely hot or cold. Cautiously handle probes to prevent personal injury.
Carefully place probes on a heat/cold resistant surface or rack until they
reach room temperature.
•
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 instrument 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 re
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2
1 Before You Start
Safety Information
quirements 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
ing power such as storage in a low humidity temperature chamber
operating at 50°C for 4 hours or more.
The AC adapter can present safety concerns if misused or damaged. To
•
avoid the risk of electric shock or fire, do not use the AC adapter outdoors
or in a dusty, dirty, or wet environment. If the cord, case, or plug of the
adapter is damaged in any way, discontinue its use immediately and have
it replaced. Never disassemble the AC adapter. Use only the AC adapter
provided with the instrument or equivalent adapter recommended by the
manufacturer of this instrument.
The AC adapter has circuits with high voltage inside that could present
•
danger of electrical shock or fire if exposed. If the AC adapter is damaged
in any way or becomes hot, discontinue its use immediately, disconnect it
from any AC supply, and have it replaced. Do not attempt to open, repair,
or continue using a damaged or defective AC adapter.
• The instrument batteries can present danger if not handled properly. To
avoid the risk of exposure to dangerous substances or explosion, immediately remove the batteries and discontinue use if they leak or become
damaged. Never allow the batteries to be shorted, heated, punctured, or
dropped. If the instrument is physically damaged, immediately remove
the batteries to insure that they do not become shorted. While removed
from the instrument, store the batteries in a location so that they do not
come into contact with metal or fluids that might short circuit the batteries
and where they are safe from excessive temperatures. Used batteries must
be disposed of properly. Check your local regulations for additional information. Never dispose of batteries in fire which may result in explosion
with the possibility of personal injury or property damage.
•
DO NOT use this instrument in combination with any probe ( PRT,
thermistor, or thermocouple) to measure the temperature or resistance of
any device where the probe might come in contact with a conductor that
is electrically energized. Severe electric shock, personal injury, or death
may occur.
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1.2.2
Cautions
•
If the instrument is dropped, struck, or handled in a way that causes inter
nal or external physical damage, immediately unplug the AC adapter, re
move the batteries, discontinue use, and contact the factory for repair. Do
not attempt to disassemble or repair the instrument, batteries, or AC
adapter. Refer repairs or replacement components to the manufacturer.
•
The instrument and thermometer probes are sensitive and can be easily
damaged. Always handle these devices with care. DO NOT allow them to
be dropped, struck, stressed, or overheated.
•
Probes are fragile devices which can be damaged by mechanical shock,
overheating, and absorption of moisture or fluids in the wires or hub.
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3
1529 Chub-E4 Thermometer Readout
User’s Guide
Damage may not be visibly apparent but nevertheless can cause drift, in
stability, and loss of accuracy. Observe the following precautions:
DO NOT allow probes to be dropped, struck, bent, or stressed.
•
DO NOT overheat probes beyond their recommended temperature range.
•
DO NOT allow any part of the probe other than the sheath to be im
•
mersed in fluid.
DO NOT allow the probe hub or wires to be exposed to excessive temper
•
atures.
Keep the probe wires clean and away from fluids.
•
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: +1.801.763.1600
Telefax: +1.801.763.1010
E-mail: support@hartscientific.com
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Fluke Nederland B.V.
Customer Support Services
Science Park Eindhoven 5108
5692 EC Son
NETHERLANDS
Phone: +31-402-675300
Telefax: +31-402-675321
E-mail: ServiceDesk@fluke.nl
Fluke Int'l Corporation
Service Center - Instrimpex
Room 2301 Sciteck Tower
22 Jianguomenwai Dajie
Chao Yang District
4
1 Before You Start
Authorized Service Centers
Beijing 100004, PRC
CHINA
Phone: +86-10-6-512-3436
Telefax: +86-10-6-512-3437
E-mail: xingye.han@fluke.com.cn
Fluke South East Asia Pte Ltd.
Fluke ASEAN Regional Office
Service Center
60 Alexandra Terrace #03-16
The Comtech (Lobby D)
118502
SINGAPORE
Phone: +65 6799-5588
Telefax: +65 6799-5588
E-mail: antng@singa.fluke.com
When contacting these Service Centers for support, please have the following
information available:
• Model Number
• Serial Number
•
Voltage
•
Complete description of the problem
5
2Introduction
2 Introduction
The Hart 1529 is a low-cost, high-accuracy, digital thermometer readout de
signed to be used with 25 and 100Ω PRTs, thermistors, and thermocouples. Its
unique combination of features makes it suitable for a wide variety of applica
tions from laboratory measurement to industrial processes. Features of the 1529
include:
Measures 25Ω and 100Ω PRTs, thermistors, and thermocouples
•
Four inputs: two PRT/thermistor and two thermocouple (standard config
•
uration)
Four-wire connection eliminates lead resistance effects in PRTs
• Measures four sensors simultaneously with a fast one-second measure-
ment cycle
• Measures one sensor at 10 readings per second (limited accuracy)
• Adjustable moving average for extra precision
• Stores over 8,000 measurements internally
•
Accepts ITS-90, PT-100 (ASTM E1137, DIN 43760, or IEC-751), and
Callendar-Van Dusen PRT characterizations
•
Accepts Steinhart-Hart R(T) or T(R) and YSI-400 type thermistor charac
terizations
•
Accepts thermocouple types B, E, J, K, N, R, S, T, Au-Pt, and polynomial
specified
•
Temperature offsets for improved thermocouple accuracy
•
Stores 10 additional sets of probe parameters
•
Eight programmable display sets for display probe information, measure
ment statistical data, or difference between measurements
•
Password protection of settings
•
Large, LCD, user-configurable, display viewable in bright or dim lighting
•
Serial RS-232 interface standard; IEEE-488 GPIB interface optional
•
Powered by external AC supply, 12-15V DC source, or internal recharge
able battery
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7
3 Specifications and Environmental Conditions
Specifications
3Specifications and Environmental
Conditions
3.1Specifications
PRTThermistorThermocouple
Inputs2 channels PRT/thermistor and 2 channels thermocouple
Temperature Range
Measurement Range
Resistance / Voltage
Accuracy
CharacterizationsITS-90,
Temperature Accuracy (meter
only)
Temperature Resolution,
typical
Operating Range
Measurement Interval0.1 second to 1 hour; inputs may be read sequentially or simultaneously at 1 second or greater interval
Excitation Current1mA
Display1.3” x 5" backlit LCD graphical display
Display Units
Data LoggingUp to 8,000 time- and date-stamped measurements can be logged
Logging Intervals0.1, 0.2, 0.5, 1, 2, 5, 10, 30, or 60 seconds; 2, 5, 10, 30, or 60 minutes
AveragingMoving average of most recent 2 to 10 readings, user selectable
Statistical DataAverage, standard deviation, minimum, maximum, spread, N, difference (delta)
2
1
3
1
1
or 4 channels PRT/thermistor
or 4 channels thermocouple
PRT/thermistor channels accept 2,3, or 4 wires
Thermocouple channels accept B, E, J, K, N, R, S, T, and Au-Pt thermocouple types
–189 to 960°C–50 to 150°C–270 to 1800°C
Ω
0to400
0to20Ω: ±0.0005
20 to 400Ω: ±25 ppm of reading
PT-100 (ASTM E1137, DIN 43760,
IEC-751),
Callendar-Van Dusen
±0.004°C at –100°C
±0.006°C at 0°C
±0.009°C at 100°C
±0.012°C at 200°C
±0.018°C at 400°C
±0.024°C at 600°C
±0.0025°C at 0°C
±0.0025°C at 25°C
±0.004°C at 50°C
±0.010°C at 75°C
±0.025°C at 100°C
μ
2 and 10
selected
Ω
Ω
: ±300 ppm of
A, automatically
–10 to 100 mV
–10 to 50 mV: ±0.005 mV
50 to 100 mV: ±100 ppm of
reading
(Internal RJC: ±0.25°C)
deviation function applied to
NIST 175, 6th-order polynomial
Type Ext./Int.RJC
B±0.6°C/±0.6°C
E±0.07°C/±0.25°C
J±0.1°C/±0.35°C
K±0.15°C/±0.4°C
N±0.15°C/±0.3°C
R±0.4°C/±0.5°C
S±0.5°C/±0.6°C
T±0.1°C/±0.3°C
N/A
9
1529 Chub-E4 Thermometer Readout
User’s Guide
PRTThermistorThermocouple
Probe ConnectionPatented DWF connectors accepts spade lug, bare-wire, or banana
CommunicationsRS-232 port included, IEEE-488 (GPIB) optional
AC Power100 to 240 VAC, 50-60 Hz, 0.4A
DC Power12 to 16 VDC, 0.5 A (battery charges during operation from 14.5 to 16 VDC, 1.0A)
BatteryNiMH, 8 hours operation typical without backlight, 3 hours to charge, 500 cycles
Size4.0” H x 7.5” W x 8.2” D (102 x 191 x 208 mm)
Weight4.5 lbs. (2 kg)
1
The sensor generally limits the actual temperature range. Temperature accuracy specifications do not include sensor accuracy. Thermis
tor temperature accuracy assumes a 10k
improved with external reference junction compensation. Thermocouple temperature accuracies are given for external reference junction
compensation and internal reference junction compensation, respectively.
2
Measurement accuracy specifications apply within the operating temperature range and assume 4-sample averaging and 4 lead wires for
PRTs. With 3-wire RTDs add 0.05
lead wires.
3
Actual resolution can be set greater than typical resolution, but the added digits (0.0001 max.) may not be meaningful to the measurement.
plug terminations
Ω
sensor. Thermocouple accuracy is with internal reference junction compensation; accuracy is
Ω
to the measurement accuracy plus the maximum possible difference between the resistances of the
Universal receptacle accepts
miniature and standard
connectors
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10
3.2Environmental Conditions
Although the instrument has been designed for optimum durability and trouble-free operation, it must be handled with care. The instrument should not be
operated in an excessively dusty, dirty, or wet environment. Maintenance and
cleaning recommendations can be found in the Maintenance section of this
manual.
For full accuracy, operate the instrument in ambient temperatures between
16–30°C (61–86°F). The battery may not charge properly at temperatures
above 30°C. Do not operate the instrument in an environment colder than 5°C
(41°F) or warmer than 40°C (104°F).
The instrument operates safely under the following conditions:
•
Ambient temperature range: absolute 5–40°C (41–104°F) [full accuracy
16–30°C (61–86°F)]
•
Ambient relative humidity: maximum 80% for temperature <31°C, de
creasing linearly to 50% at 40°C
•
Pressure: 75 kPa–106 kPa
•
Vibration should be minimized
•
Altitude less than 2,000 meters
•
Indoor use only
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4Quick Start
This section briefly explains the basics of setting up and operating your 1529
Thermometer Readout.
4.1Unpacking
Carefully unpack the 1529 thermometer readout. Verify that the following
items are present:
1529 Thermometer Readout (The battery inside the 1529 is completely
•
charged when shipped. Initial charging is not required.)
AC Adapter/Charger and power cord
•
Serial Cable
•
User’s Guide
•
• Report of Calibration with calibration label
• Probe (optional-must be purchased separately)
• Two ferrites (for use with probes as described in Section 4.4.1, Using the
Clamp-on Ferites)
If all items are not present, contact an Authorized Service Center (see Section
1.3)
4 Quick Start
Unpacking
4.2Use Proper Care
You must understand the safety issues related to the 1529. Be aware that potential hazards exist due to high temperatures and battery chemicals. Carefully
read the Warnings in Section 1.2.1 and Cautions in Section 1.2.2.
The 1529 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 over-heated.
4.3Learn About the Features and Components
Familiarize yourself with the features and accessories of the 1529 by reading
Section 5, Parts and Controls.
4.4Connect the Probe
The PRT/thermistor or thermocouple probe connects on the back panel of the
1529 using patented mini-DWF connectors (PRT/thermistor) or the universal
receptacles (thermocouples).
11
1529 Chub-E4 Thermometer Readout
User’s Guide
4.4.1Using the Clamp-on Ferrites
Clamp-on ferrites are provided with this product for the use of improving its
electromagnetic (EM) immunity in environments of excessive EM interference.
During EMC testing we found that ferrites clamped around the probe cables
and power cord reduced the risk that EM interference affects measurements.
Therefore, we recommend that the clamp-on ferrites provided (Steward P/N
28A2025-0A2) be used on the cables of probes attached to this product, espe
cially if it the product is used near sources of EM interference such as heavy in
dustrial equipment.
To attach a ferrite to a probe cable, make a loop in the cable near the connector
and clamp the ferrite around half of the loop as shown in Figure 1. The ferrite
can be easily snapped open and moved to a new probe when needed.
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probe cable
12
clamp-on ferrite
Figure 1 Using the Clamp-on Ferrites
4.5Connect the Power Source
The 1529 draws power from either a 15-volt DC power supply (the included
AC adapter) connected to the DC input or the internal re-chargeable battery
pack. To use the AC adapter, plug it into a wall outlet of the appropriate voltage
and insert the DC plug into the DC power input of the 1529 (see Figure 3 on
page 16.)
4.6Switch the Power On
Power is turned on and off with the power switch located on the top right cor
ner of the back panel. To switch the power on, toggle the power switch to the
‘ON’ position. To switch power off, toggle the power switch to the ‘OFF’ posi
tion. The instrument takes a few seconds to power up, initialize, and begin nor
mal operation. A self-test is performed displaying the channel configuration
and status of the system, calibration, GPIB, memory, and buttons. If the ther
mometer readout calibration has expired, the user is notified and must press the
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Enter button to continue initialization. If an error message is displayed on
power up see Section 11.1, Troubleshooting.
4.7Measure Temperature
After initialization, the temperature measurements for the configured channels
are displayed. The appropriate sensor type must be selected and coefficients en
tered for the measurements to be accurate (see Section 7.2.1, Edit Probe). Place
the sensors of the probe into the object(s) you want to measure. DO NOT force
the probe(s) or otherwise allow them to be bent, stressed, or overheated. Probes
can be easily damaged if misused. For further suggestions on handling the
probe and using the 1529 and probe to measure temperature accurately, see
Section 6, General Operation. For information on the various modes of opera
tion of the 1529 see Section 7, Display Functions.
4 Quick Start
Measure Temperature
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13
5Parts and Controls
The functions of the various features of the 1529 are described below.
5.1Front Panel Buttons
5 Parts and Controls
Front Panel Buttons
The front panel buttons Enter/Menu, Unit, Contrast,andExit areusedtose
lect and alter the functions of the thermometer readout (see Figure 2).
1
3
1 TYP: CVD
1 SER: 145-560
1 –T1: 0.0000 C
Figure 2 Front Panel
24.159C
24.142C
ALOG: OFF 0%
CHUB E-4 THERMOMETER READOUT
1529
ENTER / MENUUNITCONTRAST
2
24.634C
4
24.015C
1 AVE: 24.1530 C
1 STD: 0.0038 C
1 SPR: 0.0219 C
TIME: 14:58:43
EXIT
The function of each button is as follows:
Enter/Menu - This button displays and scrolls through the menu options. Use
this button to select the menu to enter and to save changes made to menu
choices.
-
Unit - LR Use these buttons to select the units C, F, or K when not in the
menu structure. In conjunction with the Menu button, use these buttons to
scroll left and right through menu options and choices.
Contrast -UD Use these buttons to lighten or darken the display when not in
the menu structure. In conjunction with the Menu button, use these buttons to
scroll up and down through menu options and choices.
Exit - Use this button to exit any menu. When editing a parameter, if the Exit
button is pressed, the immediate operation is canceled and control skips to the
next parameter. Holding the button down for several seconds, exits to the main
display.
15
1529 Chub-E4 Thermometer Readout
User’s Guide
16
Figure 3 Back Panel
5.2Back Panel
The back panel consists of the power switch, AC adapter connector, charging
indicator, RS-232 port connector, IEEE-488 port connector (optional), serial la
bel, and probe connectors. The 1529 thermometer readout can be configured in
three different ways. The configuration affects the probe connectors on the
back panel. The Model 1529 is configured with one PRT/thermistor input mod
ule of two channels and one thermocouple input module of two channels. The
Model 1529-R is configured with two PRT/thermistor input modules of four
channels. The Model 1529-T is configured with two thermocouple input mod
ules of four channels. Figure 3 shows the back panel and the three different
configurations.
Power Switch - The power switch turns the thermometer readout on and off.
5 Parts and Controls
Back Panel
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AC Adapter Connecor - The AC adapter plugs into the DC power input to re
charge the battery and to power the instrument while the battery is being
charged (see Section 6.3, Battery).
Charging Indicator - The charging indicator lights when the AC adapter is
connected. It glows green when the battery is at full charge and amber when the
battery is being charged.
RS-232 Port Connector - The DB-9 connector is for interfacing the thermometer readout to a computer or terminal with serial RS-232 communications.
IEEE-488 Port (optional) - The GPIB connector is for interfacing the thermometer readout to a computer or terminal with IEEE-488 communications.
Serial Label - The serial label shows the instrument model and serial number.
Probe Connectors - Probe(s) must be connected either to the patented
mini-DWF connectors (PRT/thermistor probes) or to the universal receptacle
(thermocouples) for operation.
5.3Accessories
The 1529 thermometer readout comes standard with a hand strap on the side
for easy carrying of the instrument. The following accessories are also
available:
•
2513-1529 Rack Mount Kit
•
9323 Soft Carrying Case
•
9322 Hard Carrying Case
•
2380 Small Thermocouple Connector Kit
•
2381 Large Thermocouple Connector Kit
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17
6General Operation
6 General Operation
Display
This section explains basic operation of the 1529 thermometer readout. De
tailed operation of the 1529 is explained in Sections 7 and 8. Section 7 explains
the menu structure and the functions available in the menu structure and Sec
tion 8 explains the communications interface for operating the 1529 remotely.
6.1Display
The 1529 display consists of two parts. The top portion of the display is used
for displaying the measurements from one to four inputs. The bottom portion of
the display is reserved for the programmable fields and field display sets. Infor
mation about the channels and measurements can be displayed in greater detail
such as min, max, spread, standard deviation, and many other functions. When
the measure period is 0.1 or 0.2 seconds (fast measurement mode), the pro
grammable fields and field display set information are not displayed.
6.2Changing Units
The 1529 thermometer readout is capable of displaying temperature in Celsius
(C), Fahrenheit (F), or Kelvin (K). (Displaying in units of Ω,KΩ,ormVisalso
available through the PROBE menu and is channel specific.) Temperature units
are changed on all channels (not individually) by pressing the buttons on the
front panel when not in the menu structure. Press the Unit, LR, buttons to
scroll forward and backward through C, F, or K. All channels or fields that are
displaying temperature on the upper or lower display are updated to the new
units.
-
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-
-
Channels that are set to Ω,KΩ, or mV in the PROBE menu are left unchanged
when temperature units are modified. Changing the units resets the statistical
calculations (displayed in the bottom portion of the display).
6.3Battery
The 1529 thermometer readout has a built-in nickel-metal-hydride battery pack
that can power the instrument for about eight hours before needing to be re
charged. The battery discharges more quickly when the display backlight is
used. The percent of battery charge remaining is displayed on the bottom por
tion of the display when the battery power is being used. The battery percent
age is approximate and should only be used as a general guideline when
determining the length of charge remaining. The battery is recharged in situ
(while in place) using the AC adapter that is provided.
Plug the AC adapter into the wall outlet and connect the DC plug of the adapter
into the 1529. The battery is charged as necessary whether or not the instru
ment is switched on. The power control circuit inside the instrument manages
battery charging and stops charging the battery automatically when the battery
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19
1529 Chub-E4 Thermometer Readout
User’s Guide
is fully charged. Only charge the battery when ambient temperature is between
16°C and 30°C (61°F and 86°F) It normally takes about three hours to fully
charge the battery. The instrument can be operated while the battery is being
charged. The charging indicator on the back panel is green when the battery is
fully charged and amber when being charged using the AC adapter.
The battery may self-discharge over several months, especially if the tempera
ture is warm. The battery pack can be used for a minimum of 500 charge-dis
charge cycles before needing to be replaced. Replacement battery packs are
available from the manufacturer. The battery pack can be easily removed and
replaced in the field by following this procedure:
1.Power the 1529 off and unplug the AC adapter from the unit.
2.Turn the 1529 over to expose the battery compartment. Remove the bat
tery cover hex screw. Place the screw in a safe place so it won’t get lost.
Flip open the battery cover to reach the battery pack.
3.Remove the battery pack. Gently disconnect the battery plug connector.
4.Attach the polarized plug of the new battery pack onto the connector.
Note: The battery plug is polarized and can only be plugged in one direction. DO NOT force it. Place the battery pack in the battery
compartment.
5.Close the battery cover and replace the screw. Avoid pinching the battery
wires.
6.Plug in the AC adapter and charge for a minimum of four hours for the
initial charge. Used batteries must be disposed of properly. Check your
local regulations for additional information. You may return used batteries to the manufacturer. Never dispose of batteries in fire as this may result in an explosion with the possibility of personal injury or property
damage.
When the battery charge is not at 100%, the measurement accuracy is not af
fected. If the power is interrupted while the instrument is logging measure
ments (on demand or automatically), the logged data is preserved and logging
resumes when the power is restored.
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20
6.4Probe Input Modules
The 1529 can be configured in three ways:
•
Two RTD/thermistor input modules.
•
Two thermocouple input modules.
•
One RTD/thermistor and one thermocouple input module.
Each input module supports two channels. Your 1529 thermometer readout is
configured at the factory and is not field changeable. Input modules should
never be removed for any reason.
All possible configurations are shown in Figure 3 on page 16.
6.4.1Connecting a PRT or Thermistor Probe
PRT and thermistor probes are attached to the resistance input module via Hart
Scientific mini-DWF connectors. These patented connectors accept bare wire,
spade, or mini banana plug terminations. The connectors are color coded for
ease in connecting lead-wires.
When using 2- and 3-wire sensors, the accuracy of the 1529 is reduced as
stated in the specifications. Compensation is made for 3-wire PRTs, but the dif
ference in lead resistance affects the measurement accuracy. The 1529 ther
mometer readout is unable to compensate for 2-wire lead resistance.
Attach the lead-wires of the probes as shown in Figure 5 on page 22. The top
termainals sense current and the bottom terminals sense potential.
6.4.2Connecting a Thermocouple
The 1529 thermocouple input module accepts both standard and sub-miniature
size thermocouple connectors. The connection is made with the positive terminal on the right and the negative terminal on the left. You must use a connector
that matches the thermocouple type for the internal RJC to be accurate. For example, if you are using a type K thermocouple you must also use a type K connector, which is made from the same type of metal. For best results, wait two
minutes before measuring after inserting the thermocouple connector into the
input module.
6 General Operation
Probe Input Modules
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Figure 4 Thermocouple Connections
21
1529 Chub-E4 Thermometer Readout
User’s Guide
Channel 1Channel 2
Connecting 4-wire probes
Channel 1Channel 2
Shield
22
Connecting 3-wire probes
Channel 1Channel 2
Connecting 2-wire probes
Figure 5 Probe Connection Wiring Diagram
6.5DC Power Source
Caution: For CE compliance and for performance, use only the AC
adapter shipped with the instrument by Hart Scientific. If the AC adapter
needs to be replaced, contact an Authorized Service Center (see Section
1.3).
The DC power source provides power to charge the battery. It can also be used
to power the 1529 while the battery is being charged. The AC adapter provided
with the 1529 is intended for these purposes. The DC power source plugs into
the DC power input on the back panel of the instrument. The AC adapter has
circuits with high voltages inside that could present danger of electric shock or
fire if exposed. If the AC adapter is damaged in any way or becomes hot, dis
continue use immediately, disconnect the adapter from any AC supply, and re
place the adapter. Do not attempt to open, repair, or continue using a damaged
or defective AC adapter.
6.6Power On Self-Test
When power is turned on, the 1529 performs a self-test checking the system, all
channels, calibration, GPIB, memory, and buttons. If an error occurs, an error
message is displayed. See Section 11.1, Troubleshooting for additional information on error messages.
6 General Operation
DC Power Source
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6.7Display Backlight and Contrast
The display backlight is adjustable for use in varying lighting conditions. The
four backlight modes are accessible in the CHANNEL menu DISPLAY OP
TIONS function. If the display appears faded, dark, or blank, adjust the con
trast (off, low, medium, high) using the front panel contrast buttons.
6.8Taking Measurements
The procedure for configuring the 1529 thermometer readout to take measure
ments on a particular input channel requires the following: (1) connecting the
sensor to the appropriate input channel , (2) enabling the channel, and (3) se
lecting the conversion type and probe characterization values.
6.8.1Connecting the Sensor
Connect the sensor to the RTD/Thermistor channel(s) or thermocouple chan
nel(s) that you want to measure. Refer to Section 7.4, Probe Input Modules, for
additional information.
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