Dwyer Instruments RHP-W series Installation and operating instructions

DWYER INSTRUMENTS, INC. Phone: [phone] www.dwyer-inst.com
P. . Box 373 • Michigan City, IN 46360-0373, U.S.A. Fax: [phone] e-mail: [email protected]
The Series RHP-W Wall Mount Humidity/Temperature/Dew Point Transmitter
is the most versatile room transmitter on the market. The stylish housing is well
vented to provide air flow across the sensor to improve measurement accuracy. An
optional LCD display can be integral to the transmitter or a remote display can be
ordered for building balancing or LEED validation. The LCD display indicates the
ambient temperature along with the humidity or dew point. The transmitter has
internal dip switches to select the temperature engineering units and whether the
transmitter outputs humidity or dew point.
The humidity and temperature sensors are field replaceable to reduce service cost
and inventory. The humidity and the dew point are measured using a capacitive
polymer sensor that completely recovers from 100% saturation. The humidity and
dew point can have either a current or voltage output, while the optional tempera-
ture output can be a current, voltage, RTD or thermistor. For models with current
or voltage for the temperature output, the temperature range is field selectable.
INSTALLATI N
Series RHP-W Wall Mount Humidity/Temperature/Dew Point Transmitter
Specifications - Installation and perating Instructions
Bulletin H-RHP-W
SPECIFICATI NS
Relative Humidity Range: 0 to 100% R .
Temperature Range: -40 to 140°F (-40 to 60°C) for thermistor and RTD sensors.
-20 to 140°F (-28.9 to 60°C) for solid state temperature sensors.
Dew Point Temperature Range: -20 to 140°F (-28.9 to 60°C); 0 to 100°F
(-17.8 to 37.8°C); 40 to 90°F (4.4 to 32.3°C); -4 to 140°F (-20 to 60°C) field selec-
table ranges.
Accuracy:
RH: Model R P2 ±2% 10-90% R @ 25°C; Model R P3 ±3% 20-80% R @
25°C.
Thermistor Temperature Sensor: ±0.4°F @ 77°F (±0.22°C @ 25°C).
RTD Temperature Sensor: DIN Class B; ±0.54°F @ 32°F (±0.3°C @ 0°C).
Solid State Temperature Sensor: ±0.9°F @ 72°F (±0.3°C @ 25°C).
Hysteresis: ±1%.
Repeatability: ±0.1% typical.
Temperature Limits: -40 to 140°F (-40 to 60°C).
Storage Temperature: -40 to 176°F (-40 to 80°C).
Compensated Temperature Range: -4 to 140°F (-20 to 60°C).
4-20 mA Loop Powered Models:
Power Requirements: 10-35 VDC.
utput Signal: 4-20 mA, 2 channels for humidity/solid state temperature sensor
models (loop powered on R ). Switch selectable R /dew point. Switch
selectable normal or reverse output.
0-5/10V utput Models:
Power Requirements: 15-35 VDC or 15-29 VAC.
utput Load: 5 mA max., 2 channels for humidity/solid state temperature
sensor models. Switch selectable 0-10V/2-10V or 0-5V/1-5V output. Switch
selectable R /dew point. Switch selectable normal or reverse output.
Solid State Temperature Sensor utput Ranges: Switch selectable,
-20 to 140°F (-28.9 to 60°C); 0 to 100°F (-17.8 to 37.8°C); 40 to 90°F
(4.4 to 32.3°C); -4 to 140°F (-20 to 60°C).
Response Time: 15 seconds.
Electrical Connections: Screw terminal block.
Drift: <1% R /year.
RH Sensor: Capacitance polymer.
Enclosure Material: White polycarbonate.
Display: Optional LCD, backlit on 0-5/10V models. Switch selectable %R or dew
point, °F/°C.
Display Resolution: R : 1%; Temperature: 0.1°F (0.1°C); Dew Point: 1°F (1°C).
Weight: 0.3 lb (0.14 kg).
Agency Approvals: CE.
1-3/16
[30.16]
1-3/16
[30.16]
.921
3x 3/8
[9.53]
35/64
[13.89]
1-13/32
[35.72]
1-53/64
[46.43]
4x 3/16
[4.76]
1-13/32
[50.01]
4-31/64
[113.9]
3-13/32
[86.52]
Shown with optional LCD display
Do not exceed ratings of this device, permanent damage not
covered by warranty may result. The 4-20 mA models are not
designed for AC voltage operation.
CAUTI N
Avoid locations where severe shock or vibration, excessive
moisture or corrosive fumes are present.
CAUTI N
Use electrostatic discharge precautions (e.g., use of wrist
straps) during installation and wiring to prevent equipment dam-
age.
CAUTI N
Disconnect power supply before installation to prevent electrical
shock and equipment damage.
Make sure all connections are in accordance with the job wiring diagram and in
accordance with national and local electrical codes. Use copper conductors only.
WARNING
www. .com [e-mail]1.800.561.8187

1. Push tab on bottom of cover and lift cover from back plate. (See Figure 1).
2. Select the mounting location, away from diffusers, lights, or any external
influences.
3. Mount transmitter on a vertical surface to a standard electrical box using the two
#6 M2C type screws provided.
4. Pull wires through sub base hole and make necessary connections.
5. Reattach cover to base plate.
Wiring
Use maximum 18 AWG wire for wiring to terminals. Refer to figures 2 through 5 for
wiring information.
Current utput Models (RHP-XW1X)
Current output models must be powered with 10-35 VDC supply voltage. Wire the
R current output as shown in Figure 2. If the unit has a 4-20 mA temperature out-
put, wire the temperature receiver between terminal 3 and the negative terminal of
the power supply. If the unit has a passive temperature sensor, wire to terminals 4
and 5. If the R output is not required, wire the negative terminal of the power sup-
ply to terminal 1 of the transmitter. If the temperature output is not used, it may be
left disconnected.
Voltage utput Models (RHP-XW2X)
Wire as shown in Figure 3. Voltage outputs may be powered with 15-35 VDC or 15-
29 VAC. Note polarity when using DC power. If the unit has a voltage temperature
output, wire the temperature receiver between terminal 4 and negative terminal of
power supply. If the unit has a passive temperature sensor, wire to terminals 5 and
6. For units with R and temperature voltage outputs, the R or Temperature out-
put may be used by itself.
Models with Selectable Current or Voltage utputs (RHP-XW44)
These models may be wired for current or voltage output. Note that both outputs
must be wired either for current or voltage. It is not possible to wire one output for
current, and the other for voltage.
Prior to wiring, verify that the Current/Voltage select switch is set to current or volt-
age as desired. Refer to “Setting the Current/Voltage Select Switch”.
Current utput Selected: Wire as shown in Figure 4. Current outputs must be
powered with 10-35 VDC. If the R output is not required, wire the negative termi-
nal of the power supply to terminal 1 of the transmitter. All units come with 4-20 mA
R and Temperature outputs. If the 4-20 mA temperature output is not used it
maybe left disconnected. If the unit has a passive temperature sensor, wire to ter-
minals 7 and 8.
Voltage utput Selected: Voltage outputs may be powered with 15-35 VDC or 15-
29 VAC. Note polarity when using DC power. Wire the R voltage output as shown
in Figure 5. If the unit has a voltage temperature output, wire the temperature
receiver between terminal 6 and the negative terminal of the power supply. All units
come with R and Temperature voltage outputs. If the temperature or R voltage
output is not used it may be left disconnected. If the unit has a passive temperature
sensor, wire to terminals 7 and 8.
Setting the Current/Voltage Select Switch
Remove the cover of the unit as shown in Figure 1. The Current/Voltage select
switch is located on the back of the circuit board. Set the switch “IOUT” for current,
“VOUT” for voltage.
1 2 3 4 5 6 7 812345678
POWER
SUPPLY
POWER
SUPPLY
+ -+ -
RH RECEIVERRH RECEIVER
++
--
TEMP RECEIVERTEMP RECEIVER
PASSIVE TEMP.
SENSOR
PASSIVE TEMP.
SENSOR
(IF PRESENT)(IF PRESENT)
(IF PRESENT)(IF PRESENT)
++
--
4-20MA4-20MA 4-20MA4-20MA
BOTTOM TAB
HINGE
TO REMOVE COVER
APPLY PRESSURE TO
BOTTOM TAB WHERE
INDICATED AND THE
TWO PARTS
WILL BECOME
UNHINGED AT TOP
REVERSE PROCESS
TO APPLY COVER
MOUNTING
BACK PLATE
SELF-LATCHING
COVER
MOUNTING
SCREWS
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
www. .com [e-mail]1.800.561.8187

DIP SWITCH SETTINGS
To access the DIP SWITC , remove the cover of the unit as shown in Figure 1. The
DIP SWITC is located on the back of the circuit board.
ALL DIP SWITCHES are factory set to “ N”
5V/10V utput Select (Applies only to Voltage utput units)
DIP SWITC #1 OFF: Output = 0-5V
DIP SWITC #1 ON: Output = 0-10V
Zero Suppression (Applies only to Voltage utput Units)
DIP SWITC #2 OFF : Output range = 1-5V or 2-10V, depending on output range
DIP SWITC #2 ON : Output range = 0-5V or 0-10V, depending on output range
Upper Display reads RH or DEW P INT
DIP SWITC #3 OFF: Upper Display reads Dew Point
DIP SWITC #3 ON: Upper Display reads R
RH UTPUT, Normal or Invert
DIP SWITC #4 OFF: Output is inverted
DIP SWITC #4 ON: Output is Normal
When set to normal output, the output increases as the R increases. When set to
inverted output, the output decreases as the R increases.
Example: Normal 4-20 mA output, 0%R = 4 mA, 100% R = 20 mA
Inverted 4-20 mA output, 0%R = 20 mA, 100% R = 4 mA
TEMP UTPUT, Normal or Invert
DIP SWITC #5 OFF: Output is inverted
DIP SWITC #5 ON: Output is Normal
When set to normal output, the output increases as the temperature increases.
When set to inverted output, the output decreases as the temperature increases.
Example: Normal 4-20 mA output, -20°F = 4 mA, +140°F = 20 mA
Inverted 4-20 mA output, -20°F = 20 mA, +140°F = 4 mA
°F/°C Select
DIP SWITC #6 OFF: °C
DIP SWITC #6 ON: °F
Temperature utput Range Select
The temperature range applies only to the current or voltage output. If the unit has
a display, it will display temperature from -40 to +140°F (-40 to +60°C). If the unit is
set to read DEW POINT, the output range of the DEW POINT will be the same as
the Temperature Output Range.
Note: The display will indicate temperature even if the unit does not have a tem-
perature output.
TR UBLESH TING
1. Verify that the unit is mounted in the correct position.
2. 4-20 mA Models:
Verify appropriate supply voltage. The transmitter requires a minimum of 10 and a
maximum of 35 VDC at its connection for proper operation. Choose a power sup-
ply with a voltage and current rating which meets this requirement under all oper-
ating conditions. If the power supply is unregulated, make sure voltage remains
within these limits under all power line conditions. Ripple on the supply should not
exceed 100 mV.
Loop Resistance – The maximum allowable loop resistance depends on the
power supply voltage. Maximum loop voltage drop must not reduce the transmitter
voltage below the 10 VDC minimum. Maximum loop resistance can be calculated
with the following equation. Vps is the power supply voltage.
Rmax =
Some receivers, particularly loop powered indicators, may maintain a fixed loop
voltage to power the device. This voltage drop must also be subtracted from the
power supply voltage when calculating the voltage margin for the transmitter. The
following equation takes this into account. Vrec is the receiver fixed voltage.
Rmax =
0-10 V utput Models:
Verify appropriate supply voltage. The 0-10V output models require a DC supply of
15 to 35 V or an AC supply of 15-29 V for proper operation maximum. Maximum
output load is 5 mA.
FIELD SENS R REPLACEMENT
Replacement sensors are available. Replacement sensors are factory calibrated
and do not require any further calibration.
1. Remove cover as shown in Figure 1.
2. Remove existing sensor as shown in Figure 8.
3. Replace the sensor with appropriate replacement sensor.
4. Reattach cover to base plate.
Remote Display
For models that are ordered without an integral LCD display, remote display Model
A-449 can be used to display the temperature and humidity or dew point. The mini
USB plug of the remote display plugs into the receptor on the side of the housing.
After a short warm up time, the display will begin to show the current temperature
and humidity or dew point measurements. umidity or dew point can be selected
via the internal dip switches as described earlier in this manual.
Sensor is sensitive to Electro-Static Discharge (ESD). Follow
industry standard practice for control and protection against
ESD. Failure to exercise good ESD practices may cause damage to the sensor.
Range
-4 to +140°F (-20 to +60°C)
+40 to +90°F (+4.4 to +32.2°C)
0 to +100°F (-17.8 to +37.8°C)
-20 to +140°F (-28.9 to +60°C)
Dip Switch 7
OFF
OFF
ON
ON
Dip Switch 8
OFF
ON
OFF
ON
Figure 7
Vps-10.0
20 mA
Vps-10.0-Vrec
20 mA
Figure 8
N TICE
www. .com [e-mail]1.800.561.8187

©Copyright 2012 Dwyer Instruments, Inc. Printed in U.S.A. 12/12 FR# 03-443752-00 Rev. 3
DWYER INSTRUMENTS, INC. Phone: [phone] www.dwyer-inst.com
P. . Box 373 • Michigan City, IN 46360-0373, U.S.A. Fax: [phone] e-mail: [email protected]
0MAINTENANCE
Upon final installation of the Series R P-W Temperature/ umidity/Dew Point
Transmitter and the companion receiver, no routine maintenance is required. A peri-
odic check of the system calibration is recommended. Except for sensor replace-
ment, t he Series R P-W is not field serviceable and should be returned if repair is
needed (field repair should not be attempted and may void warranty). Be sure to
include a brief description of the problem plus any relevant application notes.
Contact customer service to receive a return goods authorization number before
shipping.
RHP Model #
R P-2(W)XA
R P-2(W)XB
R P-2(W)XC
R P-2(W)XD
R P-2(W)XE
R P-2(W)XF
R P-2(W)X(0,1, 2, 4)
R P-3(W)XA
R P-3(W)XB
R P-3(W)XC
R P-3(W)XD
R P-3(W)XE
R P-3(W)XF
R P-3(W)X(0, 1, 2, 4)
Replacement Sensor Part #
R PS-D2A
R PS-D2B
R PS-D2C
R PS-D2D
R PS-D2E
R PS-D2F
R PS-D20
R PS-D3A
R PS-D3B
R PS-D3C
R PS-D3D
R PS-D3E
R PS-D3F
R PS-D30
Example
Series
Accuracy
ousing Type
R Output
Temperature
Sensor/Output
Option
R P
RP
2
2
3
D
W
1
1
2
4
A
A
B
C
D
E
F
0
1
2
4
LCD
LCD
Blank
RP-2D1A-LCD
R/Passive Temperature Sensor Transmitter
2% Accuracy
3% Accuracy
Wall Mount
4-20 mA
0-10V/0-5V
0-10V/0-5V/4-20 mA
10K @ 25°C Thermistor Dwyer Curve A
10K @ 25°C Thermistor Dwyer Curve B
3K @ 25°C Thermistor Dwyer Curve C
100Ω RTD DIN 385
1KΩ RTD DIN 385
20KC 25°C Thermistor Curve F
NONE
4-20 mA Solid State Sensor
0-10V/0-5V mA Solid State Sensor
0-10V/0-5V/4-20 mA Sensor
LCD Display
No Options
Model Chart
ACCESS RIES
Replacement sensor part number table:
RESISTANCE VS TEMPERATURE TABLE
°C
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
°F
-67.0
-58.0
-49.0
-40.0
-31.0
-22.0
-13.0
-4.0
5.0
14.0
23.0
32.0
41.0
50.0
59.0
68.0
77.0
86.0
95.0
104.0
113.0
122.0
131.0
140.0
149.0
158.0
167.0
176.0
185.0
194.0
203.0
212.0
221.0
230.0
239.0
248.0
257.0
266.0
275.0
284.0
293.0
302.0
Temperature
A
607800.00
441200.00
323600.00
239700.00
179200.00
135200.00
102900.00
78910.00
61020.00
47540.00
37310.00
29490.00
23460.00
18780.00
15130.00
12260.00
10000.00
8194.00
6752.00
5592.00
4655.00
3893.00
3271.00
2760.00
2339.00
1990.00
1700.00
1458.00
1255.00
1084.00
939.30
816.80
712.60
623.60
547.30
481.80
425.30
376.40
334.00
297.20
265.10
237.00
B
963849.00
670166.00
471985.00
336479.00
242681.00
176974.00
130421.00
97081.00
72957.00
55329.00
42327.00
32650.00
25392.00
19901.00
15712.00
12493.00
10000.00
8057.00
6531.00
5326.00
4368.00
3602.00
2986.00
2488.00
2083.00
1752.00
1480.00
1255.00
1070.00
915.50
786.60
678.60
587.60
510.60
445.30
389.60
341.90
301.00
265.80
235.30
208.90
186.10
C
289154.70
201049.80
141595.50
100943.70
72804.30
53092.20
39126.30
29.124.30
21887.10
16598.70
12698.10
9795.00
7617.60
5970.30
4713.60
3747.90
3000.00
2417.10
1959.30
1597.80
1310.40
1080.60
895.80
746.40
624.90
525.60
444.00
376.50
321.00
274.65
235.98
203.58
176.28
153.18
133.59
116.88
102.57
90.30
79.74
70.59
62.67
55.83
D
78.32
80.31
82.29
84.27
86.25
88.22
90.19
92.16
94.12
96.09
98.04
100.00
101.95
103.90
105.85
107.79
109.74
111.67
113.61
115.54
117.47
119.40
121.32
123.24
125.16
127.08
128.99
130.90
132.80
134.71
136.61
138.51
140.40
142.29
144.18
146.07
147.95
149.83
151.71
153.58
155.46
157.33
E
783.2
803.1
822.9
842.7
862.5
882.2
901.9
921.6
941.2
960.9
980.4
1000.0
1019.5
1039.0
1058.5
1077.9
1097.4
1116.7
1136.1
1155.4
1174.7
1194.0
1213.2
1232.4
1251.6
1270.8
1289.9
1309.0
1328.0
1347.1
1366.1
1385.1
1404.0
1422.9
1441.8
1460.7
1479.5
1498.3
1517.1
1535.8
1554.6
1573.3
F
2394000.00
1646200.00
1145800.00
806800.00
574400.00
413400.00
300400.00
220600.00
163.500.00
122280.00
92240.00
70160.00
53780.00
41560.00
32340.00
25360.00
20000.00
15892.00
12704.00
10216.00
8264.00
6722.00
5498.00
4520.00
3734.00
3100.00
2586.00
2166.00
1822.60
1540.00
1306.40
1112.60
951.00
815.80
702.20
606.40
525.60
N/A
N/A
N/A
N/A
N/A
Resistance Curves (in hms)
www. .com [e-mail]1.800.561.8187