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Fieldpiece ATH4 Dual Temperature Accessory Head

Fieldpiece ATH4
         
5 of 5
Dual temperature head

Features

  • Dual Temperature
  • Displays T1, T2, or T1-T2
  • Accepts any K-type thermocouple
  • Resolution of 0.1° F
  • External calibration pots make field calibration a breeze
  • Two K-type thermocouples included
  • Superior temperature compensation in rapidly changing environments
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List Price: $82.00
Sale: $65.60
  + Free shipping over $99

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Product Information

Fieldpiece ATH4 Dual Temperature Accessory Head

 
Fieldpiece_ATIR3_tn

Dual Temperature Accessory Head

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  • Measures Temp and RH%
  • Calculates wet bulb and dew point temperatures
  • Log relative humidity over time and troubleshoot systems
  • English and Metric units
  • Auto Power-Off (APO) to extend battery life, with override switch for data logging and extended test times
The Fieldpiece ATH4 Dual-Temperature Accessory, measures two temperatures simultaneously using the included k-type, wrap tab beaded thermocouples. The technology inside the ATH4 provides superior temperature compensation in rapidly changing environments commonly found while performing field service. Use the ATH4 to find Delta T and just about any temperature split you want to measure. Displays T1, T2 and T1-T2 on your Fieldpiece meter, handle or data logger. It is included with the HVAC Guide® System Analyzer to get target superheat and for the Target Evaporator Exit Temperature test. Fieldpiece offers a wide variety of k-type thermocouples for various HVAC specific applications. Use pipe clamp T/Cs with the ATH4 to check for blocked filters. Use wet and dry bulb thermocouples to find target superheat.

Designed for HVAC/R, the Dual-Temperature Accessory, model ATH4, measures two temperatures and calculatesthe difference in English or metric units.

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.

What's In The Box

  • Dual-Temperature Accessory - ATH4
  • (2) K-type Wrap Tab Bead Thermocouples - ATB1
  • (2) Velcro Tie- wraps (not pictured)
  • Mini-calibration Screwdriver
  • 9V Battery (installed)
  • Operator’s Manual

Specifications

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 converter 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 components, 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 accuracy 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).
Field calibration To calibrate the system (ATH4 converter, thermocouple, meter), adjust the calibration pods on the face of the converter while measuring a known temperature. 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 component separately. Accuracies of one degree or better 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 stabilize.
  4. Slide the switch to "T1" and adjust the "T1" calibration pot on the face of the converter to display 31.3 on the DMM for optimum accuracy at room temperature.
  5. Repeat steps 3 and 4 for "T2".

 


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Q & A

Q:  Which Fieldpiece products are accessory heads compatible with?
A:  Fieldpiece accessory heads can be connected to any of the following items:
  • HS26 stick meter
  • HS33 stick meter
  • HS35 stick meter
  • HS36 stick meter
  • EH4W wireless electronic handle
  • EHDL1 electronic handle
  • DL3 data logger
  • HG3 HVAC Guide System Analyzer
  • Any Fieldpiece multimeter that reads DC millivolts

Q:  What is the function of each accessory head?
A:  There are 15 different accessory heads - links to each item can be found below:
  • AAT3 - Hot wire anemometer and psychrometer accessory head
  • AAV3 - Air velocity and temperature accessory head
  • ACH4 - 400A amp clamp accessory head
  • ACM4 - Carbon monoxide detector accessory
  • ADMN2 - Dual port manometer accessory head
  • AMN2 - Manometer accessory head
  • AOX2 - Oxygen and carbon dioxide accessory head
  • ARH4 - Digital psychrometer accessory head
  • ARH5 - Psychrometer accessory head
  • ASX14 - Superheat and subcooling accessory head
  • ATH4 - Dual temperature accessory head
  • ATIR3 - Infrared temperature accessory head
  • AUA2 - Milliamps and microamps accessory head
  • AVG2 - Digital Vacuum micron gauge accessory head
  • AVH1 - Voltage accessory head

Fieldpiece Price List

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