Series EV Humidity Transmitter
Specifications - Installation and Operating Instructions
Bulletin H-WHT-S
The Compact Series EV Humidity Transmitter is designed to
withstand the elements. A removable sintered filter protects the
polymer capacitance sensor from solid objects that may come in
contact with the transmitter. The transmitter is available with 0 to
10 VDC output signal for humidity.
INSTALLATION
Warning: 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.
Caution: Use electrostatic discharge precautions (e.g., use of
wrist straps) during installation and wiring to prevent equipment
damage.
Avoid locations where severe shock or vibration, excessive
moisture or corrosive fumes are present.
Do not exceed ratings of this device, permanent damage not
covered by warranty may result.
SPECIFICATIONS
Relative Humidity Range: 0 to 100% RH.
Accuracy: ±3% 20-80% RH, ±4% @ 10-20%, 80-90%.
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).
0-10V Output Models:
Power Requirements: 13-35 VDC.
Output Signal: 0-10V @ 2 mA max.
Response Time: 15 seconds.
Electrical Connections: Screw terminal block.
Drift: <1% RH/year.
RH Sensor: Capacitance polymer.
Housing Material: ABS.
Weight: 0.3 oz (8.5 g).
Agency Approvals: CE.
2X 5/16 [7.94]
4
[101.6]
3-31/64
[88.5]
3
[76.2]
4-9/16
[115.89]
2-3/4
[69.85]
1-31/64
[37.70]
1-27/64
[36.12]
HIRED HAND, INC.
Phone: 256/287-1000
P.O. BOX 99 • BREMEN, ALABAMA 35033, U.S.A. Fax: 256/287-2000
www.hired-hand.com
H-WHT-S 10/17/07 8:44 AM Page 1
4802-5119 rev 4-08
MOUNTING
The transmitter should be mounted with the sensor pointing
downward to prevent water collection in the housing. The integral
mounting tab has two sets of mounting holes. The larger holes are
for the suspension mounting and the smaller holes are for surface
mounting the transmitter to a wall. Please see figure 1 and 2 for
more information on both mounting methods.
WIRING
Use maximum 18 AWG wire for wiring terminals. Refer to figure 3
and 4 for wiring information.
0-10V Output Models
The 0-10V output models may
be powered with 13-35 VDC.
Note polarity. The maximum
load is 2 mA (5 k ohms). Wire
as shown in Figure 3.
Figure 3
HIRED HAND, INC.
Phone: 256/287-1000
P.O. BOX 99 • BREMEN, ALABAMA 35033, U.S.A. Fax: 256/287-2000
www.hired-hand.com
©Copyright 2007 Hired Hand Printed in U.S.A. 10/07 FR# 03-195967-10 Rev.2
+
-
RH RECEIVER
TEMP. RECEIVER
TEMP. RECEIVER
OBSERVE CORRECT POLARITY FOR DC POWER
+-
+-
POWER
SUPPLY
TERMINAL
BLOCK
SCREWS
FINAL INSPECTION
0-10 V Output Models:
Verify appropriate supply voltage. The 0-10V output models
require a DC supply of 13 to 35 V for proper operation maximum.
Maximum load is 2 mA.
MAINTENANCE
Upon final installation of the Series EV Humidity Transmitter and
the companion receiver, no routine maintenance is required. A
periodic check of the system calibration is recommended. The
Series EV 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.
Figure 1
Suspension Mounting Figure 2
Surface Mounting
H-WHT-S 10/17/07 8:44 AM Page 2
4802-5119 rev 4-08
HIRED HAND, INC. Phone: 256-287-1000
P.O. BOX 99 ●BREMEN, ALABAMA 35033, U.S.A. Fax: 256-287-2000
www.hired-hand.com
Inset A
Example of
Evolution
3000/3001
PCB 169
NOTE: Wire Colors will
depend on Customer
Supplied Cable.
WARNING!
LOW VOLTAGE!
Keep Separate From
High Voltage Wires!
Inset A
4802-5119 rev 4-08
HIRED HAND, INC. Phone: 256-287-1000
P.O. BOX 99 ●BREMEN, ALABAMA 35033, U.S.A. Fax: 256-287-2000
www.hired-hand.com
/