Fieldpiece ARH5 User Manual
Fieldpiece
2
2000
00
2
2000
00
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Exit TExEx
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In-Duct
Psychrometer
Head
OPERATOR'S
MANUAL
Model ARH5
1%RH/mVDC
1°F/mVDC
1°C/mVDC
TEMP
%RH
ARH5
AUTO OFF
ON
LO BATT
°F
°CONOFF
In-Duct
Psychrometer
Head
WET BULB
DEW POINT
Quick Start
1. Connect ARH5 to Fieldpiece meter.
2. Select mVDC range on meter.
3. Remove vinyl slip cover from the
probe tip.
4. Select desired switch position on
ARH5 for temperature, wet bulb,
dew point, or %RH.
5. Read your measurement directly on
the display of the Fieldpiece meter.
Certications
80
C-Tick (N22675)
CE
RoHS compliant
WARNING
Do not retract the sensor probe by pulling on the cord.
Doing so may sever the cord from the sensors.
Description
With your purchase of the ARH5 you
now have the ability to take supply/
return temperature, %RH, wet bulb
and dew point measurements from
inside the duct or plenum.
Use the telescopic probe to take
measurements in hard to reach places.
Your ARH5 measures both
relative humidity and ambient
air temperature. It also calculates
dew point and wet bulb temperatures
automatically.
The ARH5 snaps directly onto
Fieldpiece HS series DMMs, Fieldpiece
Datalogger or HVAC Guide® System
Analyzer. For other meters, use
Fieldpiece ADLS2 test leads or the
AHDL1 handle adapter.
Use your ARH5 in combination with
the HVAC Guide and easily perform
Target Evaporator Exit Temperature
tests and get more reliable and
convenient Target Superheat
calculations.
Go wireless with your ARH5 by
using Fieldpiece wireless transmitters
(ET2W/EH4W) to send measurements
over-the-air to Fieldpiece wireless
receivers (HG3, LT17AW, EH4W)
anywhere on the jobsite.
Use the RCONE1 for hands-free
in-duct measurements.
In-Duct
ON
Psychrometer
Head
LO BATT
ON
°F
1%RH/mVDC
1°F/mVDC
1°C/mVDC
OFF
°C
TEMP
WET BULB
DEW POINT
%RH
INPUT FORM
SH Table: Standard
Refrigerant: R-22
OD Dry Bulb: 85.4°F
Return WB: 63.0°F
SL Pressure: 52.4psig
SL Temp: 45.4°F
CustomerID: __JONES123
Output
Sync
Input
Enter
SETUP
CFM
Target
CheckMe!
Evaporator
Exit Temp
Display
Data
Logger
Superheat
Service
Light
SubcoolingCombustion
Clear
Save
Recall
HVAC Guide
HG3
Fieldpiece
ARH5 w/ ET2W
transmitting wirelessly to HG3
AUTO OFF
ARH5
ET2W
AC
DC
SEND
ON
Wireless
SYNC
Transmitter
RECEIVE
LO BATT
Specications
Telescoping Probe Length: Up to 38 inches (97cm)
Probe Tip Diameter: 0.35 inch (9mm)
Storage temperature: -4°F to 140°F (-20°C to 60°C), 0
to 80% RH (with battery removed)
Temperature Coecient: 0.1 x (specied accuracy)/°C
(<18°C or >28°C)
Power: Single standard 9-volt battery, NEDA 1604, JIS
006P, IEC 6F22
Auto Power O: Approx. 15 minutes
Battery life: 150 hours typical (alkaline)
Low Battery Indication: Red LO BATT LED will light to
indicate low battery.
Output Impedance: 500Ω approx.
Dimensions: 144mm(H) x 67mm(W) x 32mm(D)
Weight: Approx. 240g, including battery
Temperature:
Sensor type: Precision thermistor
Operating environment: -4°F to 140°F (-20°C to 60°C)
Range: -4°F to 140°F (-20°C to 60°C)
Resolution: 0.1°F / 0.1°C
Accuracy: ±(1°F) 32°F to 113°F
±(2°F) -4°F to 32°F, 113°F to 140°F
±(0.5°C) 0°C to 45°C
±(1°C) -20°C to 0°C, 45°C to 60°C
Output: 1mV to 1°F/°C
Relative Humidity:
Sensor Type: Capacitance polymer lm
Operating environment: 32°F to 131°F (0°C to 55°C)
Range: 0% to 100%RH
Accuracy: ±(2.5%) 10% to 90%RH
±(5%) <10%RH and >90%RH
Note: Above accuracies stated at 73.4°F (23°C).
Output: 1mV to %RH
Sensor Response Time: 60 seconds typical for 90% of
total range.
Sensor Hystersis: ±1%RH typical (Excursion of 10% to
90% to 10%RH)
ON
In-Duct
Psychrometer
ON
In-Duct
Psychrometer
Head
WET BULB
DEW POINT
In-Duct
Psychrometer
Head
1%RH/mVDC
1°F/mVDC
ON
In-Duct
ON
Psychrometer
Head
LO BATT
LO BATT
1%RH/mVDC
1°F/mVDC
1°C/mVDC
TEMP
%RH
AUTO OFF
ARH5
°F
1%RH/mVDC
°F
1°F/mVDC
1°C/mVDC
°CONOFF
°CONOFF
TEMP
WET BULB
DEW POINT
%RH
AUTO OFF
ARH5
MAX 30VDC
24VAC
CONNECT ONLY TO
ACCESSORY HEAD!
AUTO-OFF
MAX/MIN
SYNCHOLD
ET2W
500
50
5000m
AC
500m
DC
RECV
500µ
50m
200m
2
K
200
20
SEND
ON
20
Wireless
SYNC
Transmitter
LO BATT
RECEIVE
FUSED
1°C/mVDC
TEMP
WET BULB
DEW POINT
%RH
WIRELESS
ENABLED
600600
500
50
5000m
500m
500µ
50m
200m
500
750
500
1400
M
2
K
200
200
K
500mV
15 SEC FOR
RANGE
CAT.III
MAX
600V
FUSED
200mA
MAX
30V
MAX
Head
LO BATT
°F
°CONOFF
AUTO OFF
ARH5
OFF
2000
LO BATT
°F
1%RH/mVDC
1°F/mVDC
1°C/mVDC
°CONOFF
TEMP
WET BULB
DEW POINT
%RH
AUTO OFF
ARH5
Figure 1
01
Fieldpiece
In-Duct
Psychrometer
Head
OPERATOR'S
MANUAL
Model ARH5
1%RH/mVDC
1°F/mVDC
1°C/mVDC
TEMP
%RH
ARH5
AUTO OFF
ON
LO BATT
°F
°CONOFF
In-Duct
Psychrometer
Head
WET BULB
DEW POINT
02
Quick Start
1. Connect ARH5 to Fieldpiece meter.
2. Select mVDC range on meter.
3. Remove vinyl slip cover from the
probe tip.
4. Select desired switch position on
ARH5 for temperature, wet bulb,
dew point, or %RH.
5. Read your measurement directly on
the display of the Fieldpiece meter.
Certications
80
C-Tick (N22675)
CE
RoHS compliant
WARNING
Do not retract the sensor probe by pulling on the cord.
Doing so may sever the cord from the sensors.
03
Description
With your purchase of the ARH5 you
now have the ability to take supply/
return temperature, %RH, wet bulb
and dew point measurements from
inside the duct or plenum.
Use the telescopic probe to take
measurements in hard to reach places.
Your ARH5 measures both
relative humidity and ambient
air temperature. It also calculates
dew point and wet bulb temperatures
automatically.
The ARH5 snaps directly onto
Fieldpiece HS series DMMs, Fieldpiece
Datalogger or HVAC Guide® System
Analyzer. For other meters, use
Fieldpiece ADLS2 test leads or the
AHDL1 handle adapter.
Use your ARH5 in combination with
the HVAC Guide and easily perform
Target Evaporator Exit Temperature
tests and get more reliable and
convenient Target Superheat
calculations.
04
Go wireless with your ARH5 by
using Fieldpiece wireless transmitters
(ET2W/EH4W) to send measurements
over-the-air to Fieldpiece wireless
receivers (HG3, LT17AW, EH4W)
anywhere on the jobsite.
Use the RCONE1 for hands-free
in-duct measurements.
In-Duct
ON
Psychrometer
Head
LO BATT
ON
°F
1%RH/mVDC
1°F/mVDC
1°C/mVDC
OFF
°C
TEMP
WET BULB
DEW POINT
%RH
INPUT FORM
SH Table: Standard
Refrigerant: R-22
OD Dry Bulb: 85.4°F
Return WB: 63.0°F
SL Pressure: 52.4psig
SL Temp: 45.4°F
CustomerID: __JONES123
Output
Sync
Input
Enter
SETUP
CFM
Target
CheckMe!
Evaporator
Exit Temp
Display
Data
Logger
Superheat
Service
Light
SubcoolingCombustion
Clear
Save
Recall
HVAC Guide
HG3
Fieldpiece
ARH5 w/ ET2W
transmitting wirelessly to HG3
AUTO OFF
ARH5
ET2W
AC
DC
SEND
ON
Wireless
SYNC
Transmitter
RECEIVE
LO BATT
05
Specications
Telescoping Probe Length: Up to 38 inches (97cm)
Probe Tip Diameter: 0.35 inch (9mm)
Storage temperature: -4°F to 140°F (-20°C to 60°C), 0
to 80% RH (with battery removed)
Temperature Coecient: 0.1 x (specied accuracy)/°C
(<18°C or >28°C)
Power: Single standard 9-volt battery, NEDA 1604, JIS
006P, IEC 6F22
Auto Power O: Approx. 15 minutes
Battery life: 150 hours typical (alkaline)
Low Battery Indication: Red LO BATT LED will light to
indicate low battery.
Output Impedance: 500Ω approx.
Dimensions: 144mm(H) x 67mm(W) x 32mm(D)
Weight: Approx. 240g, including battery
Temperature:
Sensor type: Precision thermistor
Operating environment: -4°F to 140°F (-20°C to 60°C)
Range: -4°F to 140°F (-20°C to 60°C)
Resolution: 0.1°F / 0.1°C
Accuracy: ±(1°F) 32°F to 113°F
±(2°F) -4°F to 32°F, 113°F to 140°F
±(0.5°C) 0°C to 45°C
±(1°C) -20°C to 0°C, 45°C to 60°C
Output: 1mV to 1°F/°C
06
Relative Humidity:
Sensor Type: Capacitance polymer lm
Operating environment: 32°F to 131°F (0°C to 55°C)
Range: 0% to 100%RH
Accuracy: ±(2.5%) 10% to 90%RH
±(5%) <10%RH and >90%RH
Note: Above accuracies stated at 73.4°F (23°C).
Output: 1mV to %RH
Sensor Response Time: 60 seconds typical for 90% of
total range.
Sensor Hystersis: ±1%RH typical (Excursion of 10% to
90% to 10%RH)
In-Duct
Psychrometer
ON
In-Duct
Psychrometer
Head
WET BULB
DEW POINT
In-Duct
Psychrometer
Head
1%RH/mVDC
1°F/mVDC
ON
In-Duct
ON
Psychrometer
Head
LO BATT
LO BATT
1%RH/mVDC
1°F/mVDC
1°C/mVDC
TEMP
%RH
AUTO OFF
ARH5
°F
1%RH/mVDC
°F
1°F/mVDC
1°C/mVDC
°CONOFF
°CONOFF
TEMP
WET BULB
DEW POINT
%RH
AUTO OFF
ARH5
MAX 30VDC
24VAC
CONNECT ONLY TO
ACCESSORY HEAD!
AUTO-OFF
MAX/MIN
SYNCHOLD
ET2W
500
50
5000m
AC
500m
DC
RECV
500µ
50m
200m
2
K
200
20
SEND
ON
20
Wireless
SYNC
Transmitter
LO BATT
RECEIVE
FUSED
1°C/mVDC
TEMP
WET BULB
DEW POINT
%RH
WIRELESS
ENABLED
600600
500
50
5000m
500m
500µ
50m
200m
500
750
500
1400
M
2
K
200
200
K
15 SEC FOR
500mV
RANGE
CAT.III
MAX
600V
FUSED
200mA
MAX
30V
MAX
Head
LO BATT
1%RH/mVDC
°F
1°F/mVDC
1°C/mVDC
°CONOFF
TEMP
WET BULB
DEW POINT
AUTO OFF
ARH5
OFF
2000
ON
LO BATT
°F
°CONOFF
%RH
AUTO OFF
ARH5
Figure 1
01
02
03
04
05
06
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.
07
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.
08
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
airow.
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
09
BULB. Press ENTER to lock reading.
4. In the INPUT FORM, highlight Supply 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 O
Your ARH5 powers o automatically
after approximately 15 minutes to
lengthen battery life. To disable "Auto
O," remove the grey rubber cover on
the front of ARH5 and slide the Auto
O switch to the left.
10
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 verication 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
tness 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.
11
For Service
In the USA, call Fieldpiece
Instruments for one-price-x-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.eldpiece.com for
service contact information.
www.fieldpiece.com
© Fieldpiece Instruments, Inc 2011; v07
12
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.
07
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.
08
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
airow.
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
09
BULB. Press ENTER to lock reading.
4. In the INPUT FORM, highlight Supply 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 O
Your ARH5 powers o automatically
after approximately 15 minutes to
lengthen battery life. To disable "Auto
O," remove the grey rubber cover on
the front of ARH5 and slide the Auto
O switch to the left.
10
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 verication 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
tness 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.
11
For Service
In the USA, call Fieldpiece
Instruments for one-price-x-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.eldpiece.com for
service contact information.
www.fieldpiece.com
© Fieldpiece Instruments, Inc 2011; v07
12
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