INSTRUCTION MANUALHYGROTHERMO TRANSMITTER

THD-700-P
No.THD71E6 2018.07

PrefaceThank you for purchasing our Hygrothermo Transmitter THD-700-P. This manual contains instructions for themounting, functions, operations and notes when operating the THD-700-P. To ensure safe and correct use,thoroughly read and understand this manual before using this instrument. To prevent accidents arising fromthe misuse of this instrument, please ensure the operator receives this manual.

Notes• This instrument should be used in accordance with the specifications described in the manual. If it is not usedaccording to the specifications, it may malfunction or cause a fire.
• Be sure to follow the warnings, cautions and notices. If they are not observed, serious injury or malfunction mayoccur.
• The contents of this instruction manual are subject to change without notice.
• Care has been taken to ensure that the contents of this instruction manual are correct, but if there are any doubts,
mistakes or questions, please inform our sales department.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
• Shinko Technos Co., Ltd. is not liable for any damage or secondary damage(s) incurred as a result of using thisproduct, including any indirect damage.

Safety Precautions (Be sure to read these precautions before using our products.)
The safety precautions are classified into categories: “Warning” and “Caution”. Depending on circumstances,
procedures indicated byCaution may result in serious consequences, so be sure to follow the directions forusage.
which may lead to dangerous conditions and cause death or serious
Warning Procedures
injury, if not carried out properly.

CautionProcedures which may lead to dangerous conditions and cause superficial tomedium injury or physical damage or may degrade or damage the product, if not
carried out properly.

Warning
Turn the power supply to the instrument off before wiring or checking.
Working on or touching the terminal with the power switched on may result in severe injury or death
due to electrical shock.

Caution• Never disassemble, modify or repair THD-700-P (hereafter,THD). Any tampering of the THD will void thewarranty.
• Do not drop, shock or apply heavy load. Doing so may lead to malfunction or jam.
• Avoid setting this instrument directly on or near flammable material.
[Ensure the mounting location corresponds to the following conditions.]• A minimum of dust, and an absence of corrosive gases• No acid, alkali, organic solvent, flammable and explosive gases• No mechanical vibrations or shocks• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 ) that does not change
rapidly• An ambient non-condensing humidity of 90 %RH or less
• No large capacity electromagnetic switches or cables through which large current is flowing• No water, oil, chemicals or the vapors of these substances can come into direct contact with the unit.

Caution with Respect to Export Trade Control Ordinance
To avoid this instrument from being used as a component in, or as being utilized in the manufacture ofweapons of mass destruction (i.e. military applications, military equipment, etc.), please investigate theend users and the final use of this instrument. In the case of resale, ensure that this instrument is notillegally exported.
11. Model
1.1 Model
THD-700-P (Hygrothermo Transmitter): Probe for exclusive use with DFT-700-M
1.2 Model Label
Model and lot number are indicated on the model indication tube. (Fig. 1.2-1)

THD-700-P XX

ModelLot number(Fig. 1.2-1)

2. Name of Sections, External Dimensions (Scale: mm)
Sensor cap
Heat resistant cord (Black)Protection tube

Model indication tube
Plug

19

Temperature sensor

THD-700-P XX

20

Humidity sensor

150
361841000(Fig. 2-1)

3. Measurement
3.1 Measurement Environment
Select a site where air stream is profluent, free of corrosive gases, and where average humidity canbe measured.
(Contact our sales office if you have questions.)• In the presence of corrosive gas, deterioration of the humidity sensor may be hastened, leading
measurement error.
Select a site where there is an absence of chloric, hydrochloric, sulfur dioxide, carbon dioxide,
nitric acid, ammonia, ethanol, methanol gases, and free of cigarette smoke.
• Select a site where water, oil, chemical or their vapors are not in direct contact.
• Select a site with a minimum of dust.
• Select a site away from direct sunlight, and no rapid temperature change with an ambienttemperature 0 to 50 (32 to 122 ).
• Select a site absent of mechanical vibrations or shocks when THD is fixed.
• Select a site where humidity is in a range of 5 to 90 %RH. [Set the waterproof filter (THF-500)
in a condensing environment, otherwise sensors may deteriorate.]2

3.2 When Measuring with the THD-700-P Fixed
When measuring temperature and humidity with the THD-700-P fixed, conduct measurements within arange of 90 degrees (between horizontal and upright). Otherwise, water may immerse from the slit
between the sensor cap and the protection tube, which may cause a malfunction of the sensor.
(Fig. 3.2-1)
When THD-700-P is used horizontally, fix it in a way as in the drawing below (when viewing fromthe slit of the sensor cap)
Mount the waterproof filter (THF-500) at the sensor part under the condensation environment.

?
Good×

Humidity sensor

Bad[A drawing with the sensor cap removed](Fig. 3.2-1)

4. Connection
To connect this transmitter to the DFT-700-M, refer to the Instruction Manual for the DFT-700-M.

5. Exchanging Temperature and Humidity Sensors
Caution• Do not use sensors other than temperature sensor TD-S and humidity sensor HD-S2.
• Keep the socket and sensor terminal clean.
If the socket and sensor terminals are stained, it is unable to measure correctly due to imperfect contact.
• Do not add extra force to the sensor or touch it with wet hands.
• Do not clean the sensor.

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How to change temperature and humidity sensors
Hygrothermo transmitter (THD-700-P) is described as THD in the following explanation.
(1) Rotate the THD sensor cap in the direction shown by the arrow (counterclockwise), then withdraw itvertically.

Sensor cap(Fig. 5-1)

(2) Pull out the deteriorated temperature sensor (TD-S) or humidity sensor (HD-S2) in the direction
shown by the arrow.

Sensor terminal

Humidity sensor (HD-S2)(Fig. 5-2)(3) Mount the new temperature sensor (TD-S) vertically into the temperature sensor socket.
There is no polarity for the temperature sensor (TD-S).
Touching the temperature sensor part may cause errors.
Socket for temperaturesensor (TD-S)
Sensor terminal(Fig. 5-3)

Temperature sensor (TD-S)(4) Insert the new humidity sensor (HD-S2) vertically into the socket for the humidity sensor.
As humidity sensor (HD-S2) is polarity sensitive, so be sure to match the Position matching markon the sensor with the Contra-insertion protection pin on the socket.
Socket for humiditysensor (HD-S2)

Contra-insertion protection pin

Position matchingmark

Humidity sensor (HD-S2)(Fig. 5-4)
(5) Insert the THD sensor cap vertically, and rotate it in the direction shown by the arrow (clockwise).

(Fig. 5-5)
4Sensor cap

6. Specifications
6.1 Standard Specification
Name:
Hygrothermo transmitter
Model:
THD-700-P
Measuring range:
Temperature: 0.0 to 50.0
Humidity:
5 to 90 %RH
Type of elements:
Temperature: Platinum thin film RTD (JIS Pt100 B class)
Humidity:
Electrostatic capacity change type
Accuracy:
Temperature:(0.3 + 0.005[T]) (JIS C1604-1989 B class)(T: Measured temperature)
Humidity:
5 %RH (Within a range of 5 to 45 )Max. 8 %RH (Outside the range of 5 to 45 )Response characteristics:
Temperature: 35 seconds (63.2% response)
Humidity: Approx. 20 seconds (Time to reach 90% of the humidity value when
the humidity shifts between 30
85 %RH.)
However, airflow 5 l/min (0.16 m/s) (Waterproof filter attached tothe sensor chip)
Hysteresis:
Humidity: Approx. 0 %RH (Stabilization time: 20 minutes)
Output:Temperature: 3-wire type 100
at 0 (JIS C1604-1989 B class)
Humidity: 0 to 1 V DC (Corresponds to 0 to 100 %RH.)
Material:
Protection tube: Coated aluminum, Color: BlackSensor cap: Polyacetal, Color: Black
Lead wire: Heat resistant cord, 1 m
External dimensions: See Section “2. Name of Sections, External Dimensions”.
Operating range:
Temperature: 0 to 50
Humidity: 5 to 90 %RH (Non-condensing, no icing)
Storage environment: Temperature: -20 to 60
Humidity: 5 to 90 %RH (Non-condensing, no icing)
Supply voltage:
Within 5 V DC 5% (Supplied from DFT-700-M)
Weight:Approx.130 g
Accessories:
Instruction manual: 1 copy

25

35.5

6.2 Supplementary
Waterproof filter
Model:
THF-500 (Common to THD-500 series)
Material: Fluorine resin (Impermeability of water or dust, and designed not to clog)
External dimensions:24

905,5(Fig. 6.2-1)

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6.3 Replacement Parts
Temperature sensor: TD-S (Common to THD-500 series), Compatible
Can be used immediately without calibration after replacing.
Humidity sensor:
HD-S2 (Common to THD-500 series), Compatible
Can be used immediately without calibration after replacing.

7. Troubleshooting
In order to maintain accuracy, inspect or exchange the sensor part once a year depending on the degreeof pollution (the atmosphere in which THD is used).
Also make sure that the temperature sensor (TD-S) and humidity sensor (HD-S2) are securely connectedto the socket before checking the items in the following table.
In the case of temperature measurement
Problem[] is flashing on
the DFT-700-M DataDisplay.

Possible Cause and Solution• Is THD-700-P plug securely connected to the DFT-700-M receptacle?
Connect the THD-700-P plug securely.
• Is temperature sensor broken?
Replace the sensor with a new one.
• Is there imperfect contact to the temperature sensor?
When temperature sensor terminal is unusable, replace thetemperature sensor with a new one.
Ask our sales office to repair when the contact at the socket side isunusable.
An irregular or unstable • Please refer to the Instruction Manual (Troubleshooting) for thevalue is indicated on the DFT-700-M.
DFT-700-M Data Display.
In the case of humidity measurement
Problem
The value on the PV
Display of DFT-700-M
does not change.

An abnormal value (highhumidity) is indicated on
the DFT-700-M PV
Display.
An abnormal value (lowhumidity) is indicated on
the DFT-700-M PV
Display.
The response of theDFT-700-M PV Display
is very slow.

Possible Cause and Solution• Is THD-700-P plug securely connected to the DFT-700-M receptacle?
Connect the THD-700-P plug securely.
• Is humidity sensor broken?
Replace the humidity sensor with a new one.
• Is there imperfect contact to the humidity sensor?
When humidity sensor terminal becomes unusable, replace thehumidity sensor with a new one.
Ask our sales office to repair when the contact at socket side isunusable.
• Is humidity sensor wet? (Condensation)
Dehydrate the humidity sensor.
• Are inorganic salt and the like adhered to the humidity sensor?
Replace the humidity sensor with a new one.
• Is dust attached to the humidity sensor?
Replace the humidity sensor with a new one.
• Is humidity sensor deteriorated after repetitions of condensation?
Replace the humidity sensor with a new one.
• Is the measuring site of THD-700-P or wind speed at the measuringsite proper?
Change the measuring site of the THD-700-P to the proper one.

When condensation occurs, 90 %RH or higher output is kept until the condensation stops.
[This is responsible for the deterioration of the humidity sensor (HD-S2).]
If problems occur other than those mentioned above, please inform our sales office or branch office.
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SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION
Head Office : 2-5-1, Senbahigashi, Minoo, Osaka, Japan
http://www.shinko-technos.co.jp/e/
URL:
Tel : +81-72-727-6100
E-mail:overseas@shinko-technos.co.jp
Fax: +81-72-727-7006