How to use, Diagnostic tests, Maintenance – Fieldpiece ARH5 - Psychrometer Accessory Head User Manual

Page 2: Limited warranty, For service, General instructions, Protecting the sensor, Rcone1 probe lock, Wireless return wet bulb for target superheat, Target evaporator exit temp with the hvac guide

How to Use

General Instructions

1. Remove vinyl slip cover from the

telescopic probe tip.

2. Connect directly onto any Fieldpiece

HS multimeter. For most Fieldpiece

SC and LT meters, use Fieldpiece

ADLS2 test leads plugged into the

COM and VΩ jacks.

3. Select mVDC range on multimeter.

4. Set switch position of ARH5 to TEMP,

WET BULB, DEW POINT, or %RH.

5. Read the measurement directly on

the multimeter display.

Protecting the Sensor

The ARH5 uses a precision

thermistor sensor. When not in use

it is best to protect this sensor with

the vinyl slip cover included with the

ARH5.

RCONE1 Probe Lock

For hands-free use, RCONE1 locks

your sensor probe in place inside the

duct. See Figure 1 on other side.

Diagnostic Tests

Wireless Return Wet Bulb

for Target Superheat

The ARH5 with a wireless transmitter

(ET2W, EH4W, or LT17AW) allows you

to monitor the return wet bulb while

you are at the condensor. Send this

real-time WB measurement wirelessly

to the INPUT FORM of the HG3 HVAC

Guide® System Analyzer to calculate a

real-time target superheat.

1. Sync your transmitter with ARH5 to

the Return WB INPUT line in Super-

heat Test of the HG3 HVAC Guide.

2. Punch or drill a small 3/8" hole in the

return plenum to insert ARH5 probe.

Press ENTER to lock in reading.

3. Input an outdoor dry bulb tempera-

ture manually with the ATH4 at the

condensor into the OD Dry Bulb

INPUT line in the Superheat Test of

the HVAC Guide.

4. Press OUTPUT on HVAC Guide to see

your target superheat calculations.

Target Evaporator Exit

Temp with the HVAC Guide

The ARH5 with Fieldpiece HVAC

Guide allows you to easily perform a

Target Evaporator Exit Temperature

(TEET ) test to determine if the

evaporator is getting the optimum

airflow.

1. Slide ARH5 onto the top of the HVAC

Guide. Select TEET switch position.

2. In the INPUT FORM, highlight Return

DB. Press ENTER to measure air tem-

perature going into the evaporator.

Drill a small 3/8" hole in the return

plenum and insert the ARH5 probe.

Set ARH5 switch position to TEMP.

Press ENTER to lock in reading. Take

measurements as close to the air

handler as possible. Seal any holes

before leaving the jobsite.

3. In the INPUT FORM, highlight Return

WB. Press ENTER to measure wet

bulb temperature going into the

evaporator by inserting ARH5 probe

through the same hole at the return.

Set ARH5 switch position to WET

BULB. Press ENTER to lock reading.

4. In the INPUT FORM, highlight Sup-

ply DB. Press ENTER to measure

air temperature coming out of the

evaporator. Punch or drill a small

3/8" hole in the supply plenum and

insert ARH5 probe in the center of

the plenum to take measurement.

Press ENTER to lock reading.

5. Press OUTPUT to view results.

Maintenance

Clean the exterior with a dry cloth.

Do not use liquid.

Battery Replacement

The batteries on the ARH5 must be

replaced when the LO BATT LED turns

red. Replace with one 9V battery.

Auto Power Off

Your ARH5 powers off automatically

after approximately 15 minutes to

lengthen battery life. To disable "Auto

Off," remove the grey rubber cover on

the front of ARH5 and slide the Auto

Off switch to the left.

Limited Warranty

In the USA, this meter is warranted

against defects in material or

workmanship for one year from date

of purchase. Fieldpiece will replace or

repair the defective unit, at its option,

subject to verification of the defect.

This warranty does not apply to

defects resulting from abuse, neglect,

accident, unauthorized repair,

alteration, or unreasonable use of

the instrument.

Any implied warranties arising

from the sale of a Fieldpiece product,

including but not limited to implied

warranties of merchantability and

fitness for a particular purpose, are

limited to the above. Fieldpiece shall

not be liable for loss of use of the

instrument or other incidental or

consequential damages, expenses, or

economic loss, or for any claim of such

damage, expenses, or economic loss.

State laws vary. The above limitations

or exclusions may not apply to you.

For Service

In the USA, call Fieldpiece

Instruments for one-price-fix-all out of

warranty service pricing. Send check or

money order for the amount quoted.

Send the meter freight prepaid to

Fieldpiece Instruments. Send proof

of date and location of purchase for

in-warranty service. The meter will be

repaired or replaced, at the option of

Fieldpiece, and returned via least cost

transportation. Outside of the USA,

please visit www.fieldpiece.com for

service contact information.

www.fieldpiece.com