Yamatake HTY78 3 Series User manual

AB-5961
1
Insertion Temperature/Humidity Sensor
HTY78X3/ TY78X3/ HY78X3
General
Insertion temperature/humidity sensor HTY78X3 series
uses a Pt100 platinum film temperature sensing element
and a polymer capacitive film humidity sensing element
(FP3 specially developed by Yamatake) which ensures
highly accurate and reliable temperature/humidity sens-
ing. It is designed to be installed in return air ducts of
commercial buildings, in return air chambers of air han-
dling units or in ventilated shield for meteorological in-
struments. TY78X3 series for sensing temperature only
and HY78X3 series for sensing humidity only are also
available.
Features
1) Wide sensing range
2) Excellent long term stability
3) Highly resistant to environment.
4) Quick response and high repeatability.
5) Easy to install in a duct (bracket prepared)
6) Splash-proof housing (IP54)
7) No need of maintenance for the head of TY series
(splash-proof without filter)
Models
Model No. Shape Type Power
supply
Humidity
output
Temperature
output Fixed Fixed Description
HTY78 Insertion temperature/humidity sensor
TY78 Insertion temperature sensor
HY78 Insertion humidity sensor
0 Insertion length: Long
1 Insertion length: Short
3
―
T 24 V DC or 24 V AC
Z No power supply needed
0 W/o humidity sensor
1 Humidity output 1-5 V
4 Humidity output 4-20 mA
6 Humidity output 0-10 V
0 W/o temperature sensor
P Temperature Pt 100
0 0
―
Specifications/Instructions
▲HTY7803
▲TY7813

2AB-5961
Select a model No. from below
HTY7803T1P00 Humidity (1-5 V) + temperature (Pt 100) Insertion length: Long
HTY7803T4P00 Humidity (4-20 mA) + temperature (Pt 100) Insertion length: Long
HTY7803T6P00 Humidity (0-10 V) + temperature (Pt 100) Insertion length: Long
HTY7813T1P00 Humidity (1-5 V) + temperature (Pt 100) Insertion length: Short
HTY7813T4P00 Humidity (4-20 mA) + temperature (Pt 100) Insertion length: Short
HTY7813T6P00 Humidity (0-10 V) + temperature (Pt 100) Insertion length: Short
TY7803Z0P00 Temperature (Pt 100) Insertion length: Long
TY7813Z0P00 Temperature (Pt 100) Insertion length: Short
HY7803T1000 Humidity (1-5 V) Insertion length: Long
HY7803T4000 Humidity (4-20 mA) Insertion length: Long
HY7803T6000 Humidity (0-10 V) Insertion length: Long
HY7813T1000 Humidity (1-5 V) Insertion length: Short
HY7813T4000 Humidity (4-20 mA) Insertion length: Short
HY7813T6000 Humidity (0-10 V) Insertion length: Short
Safety Instructions
Please read instructions carefully and use the product properly. Please keep this instruction on hand for reference at
any time.
Usage Restrictions
This product is targeted for general air conditioning. Do not use this product in a situation where human life may be
affected. If this product is used in clean rooms or places where reliability or control accuracy is particularly required,
please contact Yamatake’s sales representatives. Yamatake Building Systems Co., Ltd. bears no responsibility for
any benefit, or lack of benefit, derived from the operation by the customer.
CAUTION
●Installer must be a trained, experienced service technician.
●Check the ratings given in this instructions to prevent equipment damage.
●Check the environment given in this instructions to prevent equipment damage.
●Disconnect power supply before wiring to prevent electric shock or equipment damage.
●All wiring must comply with local codes and ordinances.
●Use crimp contacts with insulation jackets for wire terminals.
●Do not remove or disassemble casing except for wiring. May result in equipment damage.
●When the product is faulty, the reduced output may result in excessively humid status. Take safety
measures at controller.

3AB-5961
Specifications
Item Specifications
Temp. -20 to 60 °CMeasurement range
Humid. 0 to 100 % RH (-5 to 55 °C)
Temp. 100
Ω/ 0 °COuput signal
Humid. 1-5 V DC (linear to 0 to 100 % RH) (output impedance: min. 10 kΩ)
0-10 V DC (linear to 0 to 100 % RH) (output impedance: min. 10 kΩ)
4-20 mA DC (linear to 0 to 100 % RH) (maximum permissible load 300 Ω)
Temp. +/- 0.3 °C (at conditions of -20 to 60 °C)Sensing accuracy
Humid. +/- 3 % RH (at conditions of 30 to 70 % RH 25 °C)
+/- 5 % RH (at conditions of 20 to 80 % RH 15 to 35 °C)
Temp. TY series max. 1 min.
HTY, HY series max. 4 min.
Time constant
(at air velocity 2 m/s)
Humid. Max. 1 min
Temp. Rated operating conditions: -20 to 60 °C 0 to 100 % RH (non-condensing)
Extreme operating conditions: -20 to 60 °C 0 to 100 % RH (non-condensing)
Storage conditions: -30 to 70 °C 5 to 95 % RH (non-condensing)
Humid. Rated operating condtions: -5 to 55 °C 10 to 100 % RH (non-condensing)
Extreme operating condtions: -20 to 60 °C 0 to 100 % RH (non-condensing)
Storage conditions: -30 to 70 °C 5 to 95 % RH (non-condensing)
Environmental
conditions
Air velocity Extreme operating conditions: 0 to 15 m/s
Power supply 24 V AC +10/-15 % (50/60 Hz), 24 V DC +/- 10 % (only for HTY、HYseries)
Power consumption 0.2 VA (at conditions of 24 V AC、HTY, HY series 1-5 V, 0-10 V output model)
150 mW (at conditions of 24 V DC、HTY, HY series 1-5 V, 0-10 V output model)
1.0 VA (at conditions of 24 V AC、HTY, HY series 4-20 mA output model)
800 mW (at conditions of 24 V DC、HTY, HY series 4-20 mA output model)
Dielectric strength 500 V AC less than 1 mA of leak for 1 minute
Insulation resistance 500 V DC min. 20 MΩ
Vibration resistance 9.8 m/s² (10 to 150 Hz)
Protection Housing IP54 (when splash-proof connectors and designated multi-core cables are used or when a
designated conduit is used)
The head of TY series is IP24
Installation Duct, air chamber, ventilated case for meteological instruments (with special bracket)
Wiring Terminal block connection
Material Housing: GF20 % Polycarbonate mixed resin, gray (equivalent to DIC-651)
Filter cap: Denatured PPE resin, gray (equivalent to DIC-651)
Weight Approx. 240 g (7803 series) Approx. 210 g (7813 series)
Accessories None
Order separatly 83157235-001 Mounting bracket
83157240-004 Conduit mounting set (for HTY, HY series、applicable cable outer diameter 11 to 14 φ)
83157240-009 Conduit mounting set (for TY series、applicable cable outer diameter 9.4 to 11 φ)
83104098-004 Seal connector (for HTY, HY series、applicable cable outer diameter 10.5 to 14.5 φ)
83104098-003 Seal connector (for TY series、applicable cable outer diameter 8.5 to 12.5 φ)
DY8000A1001 Sensor shield for outdoor
DY3002A1005 Ventilated case mounting bracket (L shape metal)
Order separately for
maintenance
83162945-003 Filter set
HTY78*3/HY78*3 series have passed the following tests:
EN50081-1/1992 (EN55011/1998 group 1, class B)
EN50082-1/1997 (EN61000-4-2, EN61000-4-3, ENV50204, EN61000-4-4, EN61000-4-5, EN61000-4-6,
EN61000-4-11)

4AB-5961
Dimensions (mm)
(1)7803 series
(2)7813 series
(3)Mounting bracket
62.5
25 50 60
40
6072.3
φ30
3.3
108.6 51.3
45.6 67.3
70
φ20
110
1135
247.6 51.3
45.6 67.3
A
70
φ20
110
1135
A

5AB-5961
Installation
Important


1) Select a location where the typical temperature and
humidity of the measured fluid can be sensed and
where the wind speed requirements are met.
2) Make sure that the temperature and humidity elements
are entirely immersed in the measured fluid. Also,
make sure that air can pass over the side of the
sensor.
3) Allow adequate service clearance at the front of the
cover.
4) When installing in steam heating air handling unit,
make sure the steam does not directly expose. (It
may exceed the extreme operating condition.)
5) When inserting the insertion part facing upward,
prevent dew condesation. (The condensated dew will
remain in the fileter cap and measurement difference
will occur until it becomes dried.)
CAUTION
Do not step on the unit.
Mounting 7803 series (duct mounted)
1) Prepare the mounting bracket in advance.
Attach the mounting label at the sensor mounting
position and make a hole in the duct at the point
indicated on the label. Fix the mounting bracket onto
the duct with M4 screws, inserting packing between
the duct and the bracket.
Cover the duct with an insulating material. (If you cover
the duct with an insulating material first, fill the
clearance between the bracket and the duct with the
insulating material after fixing the bracket.)
2) Turn the stopper of the main unit to the left and insert
the main unit into the bracket, aligning the claw to the
bracket groove. Fix it by turning the stopper 45 ° in
the clockwise direction.
Mounting 7813 series (air handling unit
mounted)
1) Prepare the mounting bracket in advance. Attach a
mounting label at the desired mounting position and
make a hole in the air handling unit return air chamber.
Fix the mounting bracket onto the duct with M4 screws
(included) between the duct and the bracket.
2) Turn the stopper of the main unit to the left and insert
the main unit into the bracket, aligning the claw to the
bracket groove. Fix it by turning the stopper 45 °
clockwise.
Duct
Air flow

Duct
Packing
A
ir flow

Insulating material

Panel

Panel

Air flow

Claw

Stopper
45°(2)

(1)

45°(2)

(1)

Claw

Stopper

6AB-5961
Wiring (common instructions for 7803 series
and 7813 series)
1) Dismount the cover.
(i) Cable connection
Prepare the proper seal connector (order separately)
in advance, if required.
Screw the threaded seal connector into the main and
lead the cable through it.
(ii) Conduit connection
According to the number of cable cores, prepare a
conduit set (order separately) in advance. Fix the
conduit connector and the attachment tentatively with
a screw. Select an O-ring ideal for the cable.
Lead the calbe, as shown in the following diagram.
Pull up the cable and fix the attachment to the main
unit with a screw.
Tighten the nut on the conduit at a point where the
conduit lock screw can be tightened easily.
2)Connect the wires to the terminals and close the cover.
Tighten the seal connector. (only when cable
connected)
Terminal Nos. and cable cores
Nut attached to conduit
Attachment

Conduit connector
(nominal size: 25 mm)

Tighten
Allow sufficient
service clearance
〜(+)
Pt 100
1
2
3
4
5
6
7
A
B
B
24 V AC
(24 V DC)
1-5 V DC
0-10 V DC
4-20 mA
HTY7803T1P00
HTY7803T4P00
HTY7803T6P00
HTY7813T1P00
HTY7813T4P00
HTY7813T6P00
(Cable cores:7)
⊥(–)
+
–
TY7803Z0P00
TY7813Z0P00
(Cable cores:3)
HY7803T1000
HY7803T4000
HY7803T6000
HY7813T1000
HY7813T4000
HY7813T6000
(Cable cores:4)
Power
supply
Humidity
Temp-
erature
Pull the cable
Tightening direction

Nut attached to conduit

Conduit connector
(nominal size: 25 mm)
Conduit lock
screw
Attachment

O-ring

Straight box connector
(nominal size: 24-25 mm)
Seal connector
(order separately)

7AB-5961
Wiring Instructions
Shielded multi-core cables (CVV-S) of 1.25 mm² or 2
mm² must be used. Be sure to ground the shielded
cable on the controller side.
If you don't need splash-proof, a 1.25 mm² or 2 mm² IV
cable may be used for power and a 1.25 mm² shielded
cable for humidity and temperature signals.
The maximum cable length is 100 m.
Never connect power supply to temperature output.
Always check wiring before supplying power.
Never share 24 V AC transformer to other products.
Use of individual AC transformer of humidity
transimitter
CAUTION
Use insulated transformer to supply 24 V AC
power supply voltage
Never share 24 V AC power supply with other
equipment.
If a transformer is shared with other equipment,
loop will be formed at common and the sen-
sor/transmitter may be damaged.
• Transformer (24 V AC power supply) shared
• Transformer (24 V AC) separated
• 24 V DC power shared
Follow the next instructions to prevent an induction cur-
rent flowing from the humidity sensor to the controller
input circuit, or to prevent an influence on the generating
noise due to inadequate time constant of the controller
input.
• Use a controller with a low pass filter with a removal
ratio of 40dB or higher (normal mode).
• Connect an isolator to the controller input circuit if a
removal ratio is unknown.
• If you use a Yamatake controller, no problem will
occur.
Maintenance
Since the temperature / humidity sensor have been in-
spected and adjusted accurately before shipment, they
need no adjustment at the site. However, follow the
maintenance instructions below:
1) Periodical inspection
Determine the periodical inspection intervals according
to the amount of suspended dust and other
contaminants in the environment. Regulary check the
sensor’s accuracy and the condition of its cover.
2) Troubleshooting
If any problem occurs during operation, refer to the
following table for appropriate solutions.
No common loop formed
Common loop formed, however, not
so affected by common mode noise.
Good
24 V DC
＋
＋＋
＋
⊥
⊥⊥
⊥
＋
＋＋
＋
−
−−
−
＋
＋＋
＋
−
−−
−
＋
＋＋
＋
−
−−
−
〜
〜〜
〜
⊥
⊥⊥
⊥
〜
〜〜
〜
＋
＋＋
＋
−
−−
−
−
−−
−
Temperature / humidity sensor
Common loop formed
Not Good
24 V AC
Multi-loop
controller
Common
share
＋
＋＋
＋
⊥
⊥⊥
⊥
＋
＋＋
＋
−
−−
−
＋
＋＋
＋
−
−−
−
−
−−
−
〜
〜〜
〜
⊥
⊥⊥
⊥
Temperature / humidity sensor
〜
〜〜
〜
−
−−
−
＋
＋＋
＋
Good
24 V AC
＋
＋＋
＋
＋
＋＋
＋
−
−−
−
＋
＋＋
＋
−
−−
−
＋
＋＋
＋
−
−−
−
〜
〜〜
〜
⊥
⊥⊥
⊥
24 V AC 〜
〜〜
〜
⊥
⊥⊥
⊥−
−−
−
Multi-loop
controller
Temperature / humidity sensor
Temperature / humidity sensor
Multi-loop
controller
Temperature / humidity sensor
Temperature / humidity sensor

8AB-5961
Troubleshooting
Problem… Check… Action…
- No output
generated
- Unstable output
- Check loose
connection
- Check Incorrect
wiring
- Check supply
voltage
- Check sensor
damage
- Tighten the terminal
brock
- Re-wire
- Replace sensor
- Slow response
- Error in output
- Check the sensor
for water leakage or
condensation
- Check the installed
location
- Check the dust,
soil.
- Remove the unit
from bracket.
Dry the unit with no
power.
- Refer to the
Installation
instructions
- Clean filter
- Replace filter
- Humidity one point
adjustment
- Replace sensor
3) Replacing the filter:
(1) Prepare filter set (order separately) in advance.
Remove the filter cap and filter by hand.
(2) Cover the sensor with the new filter and then put
the new filter cap over.
(3) Tighten the filter cap.
4) Humidity one point adjustment
When you find a calibration error in the humidity sen-
sor, re-calibrate the sensor using the adjustment vol-
ume (VR1, VR2) located on the circuit board. The
output value is increased by turning this volume in
clockwise direction and decreased by turning it coun-
terclockwise. Use referenced humidity meter of ade-
quate accuracy. A digital multimeter is recom-
mended to check the output voltage.
Parts Identification of adjustment volume
Cautions
1. After unpacking, age the transmitter in the ambient
atmosphere for at last 24 hours.
2. To calibrate and adjust, take care the heat from
human body or appliances.
Building Systems Company
International Business Headquarters
Totate International Building
1-12-19, Shibuya
Shibuya-Ku,Tokyo, 150-8316
URL:http//www.yamatake.com
Rev.2.1 Jun. 2002 Printed in Japan. AB-5961 3H-H (W)
①

②

Filter cap (The cap will
remove with the filter inside.)

Loosen

Filter cap

Filter
Ti
g
hten

Rough adjustment knob (VR2)

Fine adjustment knob (VR1)
Filter cap

Specifications are subject to change without notice.
8