Fieldpiece ATH4 - Dual Temperature Accessory Head User Manual download pdf

Dual Temperature

Accessory Head

Model: ATH4

Description

Converts the voltages from two K-type thermo-

couples to display temperature on any digital multi-

meter with industry standard jacks and input imped-

ance of 9 or 10 MOhms. For 0.1º resolution, use a

DMM that displays 0.1mVDC.

The ATH4 converts the Fieldpiece "Stick" series

meter, DL3 data logger and EHDL1 electronic han-

dle to a one-piece dual-input temperature meter.

Use the optional Fieldpiece ADLS2 deluxe silicone

test leads or the AHDL1 adapter handle with the

ATH4 for use with DMMs with industry standard

jacks.

EHDL1 AHDL1w/DMM DL3 “Stick”

Operation

Insure the temperature being measured is stable.

Maintain good contact between the thermocouple

and what's being measured. Set the meter on

200mV or 2000mV range for 0.1º or 1º resolution

respectively. Slide the switch to "T1" to measure

display T1, to "T2" to display T2, and to "T1-T2" to

measure the difference between T1 and T2.

Velcro Tie-wrap Instructions

Two Velcro straps have

been included with the

ATH4 to make it easier to

measure pipe tempera-

tures. Use the Velcro strap

to hold the bead of the

model ATB1 thermocouple

against the pipe.

Optional K-type thermocouples

Fieldpiece offers many k-type thermocouples that

can be used with the ATH4. ATB1 is the included

thermocouple, ATA1 is the ATB1 with an alligator

clip, ATAF1 is a high temperature ATA1, ATWB1 is

for wet bulb, ATF1 is 6” (15cm) for fluids, ATP1 is for

piercing semi solids, ATEXT10 is a 10’ (3m) exten-

sion, and the ATC3 is a premium pipe clamp.

ATWB1 ATF1

ATAF1 ATP1

ATA1 ATEXT10

ATC3

Field calibration

To calibrate the system (ATH4 converter, thermo-

couple, meter), adjust the calibration pods on the

face of the converter while measuring a known tem-

perature. Ice water is very close to 32°F (0°C) and

is readily available. This eliminates the accuracy

stack-up which results from calibrating each com-

ponent separately. Accuracies of one degree or bet-

ter are easily obtained.

1. Stabilize a large cup of ice water. Stir or shake

while it is stabilizing. Pure distilled water will be

the most accurate, but tap water is nearly as

good. A stabilized mixture of ice and water is

very close to 32ºF (0°C), even after considering

altitude and contaminant variations.

2. Select mVDC range.

3. Immerse one probe in ice water and let it stabi-

lize.

4. Slide the switch to "T1" and adjust the "T1" cali-

bration pot on the face of the converter to dis-

play 31.3 on the DMM for optimum accuracy at

room temperature.

5. Repeat steps 3 and 4 for "T2".

Warranty

The product is warranted to the original purchas-

er against defects in material or workmanship for a

period of one (1) year from the date of purchase.

During the warranty period, Fieldpiece Instruments

will, at its option, replace or repair the defective unit.

This warranty does not apply to defects resulting

from abuse, neglect, accident, unauthorized repair,

alteration, or unreasonable use of the instrument.

Any implied warranty arising out of the sale of

Fieldpiece's products including but not limited to

implied warranties of merchantability, and fitness for

purpose, are limited to the above. Fieldpiece shall

not be liable for incidental or consequential dam-

ages.

Service

Return any defective ATH4 to Fieldpiece for war-

ranty service along with proof of purchase. Contact

Fieldpiece for out of warranty repair charges.

Specifications

Inputs: Two K-type thermocouples

Outputs: Switchable: T1, T2, T1-T2, standard

male banana plugs

Calibration: Two externally adjustable pots

Conversion rate: 1mVDC per 1º

Range: -50 to 1800ºF (-46 to 982°C)

Resolution: 0.1º for meters with 0.1mVDC

Battery: Standard 9V

Battery life: 200 hours continuous

Auto-off: After 15 minutes

LED indication: green for "On", red for low battery

Max input voltage: 60 VDC, 24 VAC

Strong RF fields can adversely affect the con-

verter performance.

Operating temp: -30 to 120ºF (-34 to 49°C)

Storage temp: -4 to 140ºF (-20 to 60°C)

Probe insulation: Teflon, to 500ºF (260°C)

System accuracy* at 75ºF ± 5ºF (24°C ±3°C)

ambient, after ice bucket calibration:

±1ºF, -50 to 165ºF (±0.5°C, -46 to 73°C)

±2ºF, 165 to 350ºF (±1°C, 74 to 176°C)

±3ºF, 350 to 1700ºF (±2°C, 176 to 926°C)

Converter accuracy: ±0.5%+3.6ºF (2°C), -50 to

1800ºF (-46 to 982°C)

Thermocouple accuracy: ±4ºF (±2°C) or ±0.75%,

whichever is greater, -30 to 1500ºF (-34 to

815°C)

* To calculate system accuracy from compo-

nents, add up the accuracy specifications for the

meter, the thermocouples, and the converter. For

example, at 100ºF(38°C), add the accuracies for a

DMM(±1ºF/ ±0.5°C), a thermocouple (±4ºF/ ±2°C),

and the converter (±4ºF/±2°C). The system accura-

cy for these individually calibrated components is

±9ºF(±4.5°C). If the actual temperature was

100ºF(38°C), the meter could read as high as 109

(42.5) and as low as 91 (33.5). By contrast, after a

simple "ice bucket" system calibration, the meter

would read between 101.0 (38.5) and 99.0 (37.5).

OPERATOR’S MANUAL

v05

Summary of Contents

Page 1

Dual TemperatureAccessory HeadModel: ATH4DescriptionConverts the voltages from two K-type thermo-couples to display temperature on any digital multi-m

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